An electrical cabinet

Abstract

The application relates to an electrical cabinet, and relates to the technical field of electrical cabinets, which comprises a cabinet body, the cabinet body is provided with a front cabinet door and a rear cabinet door, an operating mechanism and a triggering mechanism are arranged in the cabinet body, the operating mechanism comprises guide rails arranged in the cabinet body, a circuit breaker chassis vehicle in sliding connection with the guide rails, and a contact box arranged in the cabinet body, the triggering mechanism comprises a plurality of grounding switches, an insulating cover is arranged between adjacent grounding switches, insulating sleeves are arranged on the outer walls of the grounding switches and the contact box, the triggering mechanism further comprises a driving assembly and a valve interlocking assembly connected with the circuit breaker chassis vehicle, the driving assembly drives a guide rail interlocking assembly and a grounding interlocking assembly. The application can realize the effect that the cabinet body volume of the electrical cabinet is reduced, the components arranged in the cabinet body do not interfere with each other, and the electrical gap still meets the national standard.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electrical cabinets, in particular to an electrical cabinet. BACKGROUND

[0002] The electrical cabinet is a cabinet for installing electrical equipment, has the function of protecting the electrical equipment installed in the interior thereof, and is widely applied to various industries.

[0003] In the related art, the electrical cabinet comprises a cabinet body, a cabinet door arranged on the side wall of the cabinet body and components arranged in the cabinet body, in order to ensure the use safety of the electrical cabinet, China has strict requirements on electrical clearance, if the electrical clearance is less than the required electrical clearance, electric arc will be generated between adjacent components and discharge, the components will have the danger of short circuit, and the operator will have the danger of electric shock if operating at close range.

[0004] At present, the electrical clearance of the electrical cabinet with a rated voltage of 12kV is at least 125mm, the existing electrical cabinet model is 650, the cabinet body width of the electrical cabinet of the 650 model is 650mm, in some specific scenarios, a small-size cabinet body needs to be used, and therefore the volume of the electrical cabinet needs to be reduced, that is, the width of the cabinet body of the electrical cabinet needs to be reduced from 650mm to 550mm, if the width of the cabinet body is reduced, the components originally arranged close to the inner side wall of the cabinet body need to be moved towards the inner side of the cabinet body, and therefore the electrical clearance between adjacent components does not meet the national standard, and the adjacent components will interfere with each other, and there is room for improvement. SUMMARY

[0005] In order to solve the problem that when the volume of the electrical cabinet is reduced, the components arranged in the electrical cabinet will interfere with each other and the electrical clearance does not meet the national standard, the purpose of the application is to provide an electrical cabinet.

[0006] The electrical cabinet provided by the application adopts the following technical scheme: an electrical cabinet comprises a cabinet body, a front cabinet door and a rear cabinet door are arranged on the cabinet body, an operating mechanism, a triggering mechanism and a grounding switch are arranged in the cabinet body, the operating mechanism comprises a circuit breaker chassis trolley and a plurality of contact boxes, a composite insulation structure is arranged between adjacent grounding switches and between adjacent contact boxes, the triggering mechanism further comprises a driving assembly for cooperating with the grounding switch to open and close and structurally avoiding the cabinet body, a guide rail interlocking assembly for cooperating with the driving assembly and structurally avoiding the cabinet body, a grounding interlocking assembly for cooperating with the driving assembly and structurally avoiding the cabinet body, and a shutter interlocking assembly for cooperating with the circuit breaker chassis trolley and structurally avoiding the cabinet body.

[0007] By adopting the above technical scheme, if the distance between the adjacent contact boxes and the adjacent grounding switches is too close, electric arc will be generated and discharge will be performed between the adjacent contact boxes and the adjacent grounding switches, and the contact box and the grounding switch will be in danger of short circuit, and if the worker works in close proximity, the danger of electric shock will occur, so it is necessary to control the gap between the adjacent grounding switches and the adjacent contact boxes, and a composite insulation structure is additionally arranged between the adjacent grounding switches and the adjacent contact boxes, so that the electrical gap between the adjacent grounding switches can be smaller, the electrical gap between the adjacent contact boxes can be smaller, and the distance between the adjacent grounding switches and the adjacent contact boxes can be reduced, thereby providing space for the reduction of the cabinet volume. The driving assembly can drive the guide rail interlocking assembly and the grounding interlocking assembly, the guide rail interlocking assembly can limit the circuit breaker chassis car, that is, when the grounding switch is closed, the driving assembly drives the guide rail interlocking assembly, so that the circuit breaker chassis car cannot be shaken into the cabinet, and when the circuit breaker chassis car is shaken into the cabinet, the grounding switch cannot be closed, thereby ensuring the safety of the worker. The grounding interlocking assembly can control the opening and closing of the rear cabinet door, when the grounding switch is opened, the driving assembly drives the grounding interlocking assembly, so that the rear cabinet door cannot be opened, when the grounding switch is closed, the driving assembly drives the grounding interlocking assembly, and at this time the rear cabinet door can be opened, thereby ensuring the safety of the worker. The setting of the shutter interlocking assembly, when the circuit breaker chassis car is shaken into the cabinet, the circuit breaker chassis car drives the shutter interlocking assembly, so that the components on the circuit breaker chassis car can be connected with the contact box, when the circuit breaker chassis car is shaken out of the cabinet, the circuit breaker chassis car drives the shutter interlocking assembly, so that the contact box is shielded by the shutter interlocking assembly, thereby ensuring the safety of the worker and preventing electric shock. Moreover, the structures of the driving assembly, the guide rail interlocking assembly, the grounding interlocking assembly and the shutter interlocking assembly are adapted to the reduction of the cabinet volume, so that the components in the cabinet do not interfere with each other and the electrical gap still meets the national standard.

[0008] Optionally, the guide rail interlocking assembly comprises a guide rail in sliding connection with the circuit breaker chassis vehicle, the guide rail being provided with a locking hole, the guide rail interlocking assembly further comprising a linkage column in linkage connection with the driving assembly, the linkage column being provided with a let-in slot, the linkage column being provided with a rotating rod in synchronous rotation with the linkage column, the rotating rod being connected with a push disc at an end away from the linkage column, the push disc being provided with a recess, the push disc being fitted with a push plate, the push plate being provided with a push block in cooperation with the recess, the push plate being rotatably connected with a flap horizontally arranged on the side wall of the guide rail, the push plate being provided with a reset spring at an end away from the flap, the flap being rotatably connected with the side wall of the cabinet at an end away from the push plate, the flap being connected with a connecting piece, the connecting piece being rotatably connected with a locking ring at an end away from the flap, the locking ring being provided with a locking rod rotatably connected with the cabinet, the locking rod being connected with a first locking plate in synchronous rotation with the locking rod at one end, the first locking plate being provided with a plug rod, the plug rod being rotatably connected with a locking tongue capable of extending into the locking hole, the locking rod being rotatably connected with a second locking plate for limiting the rotation of the locking tongue, the second locking plate being provided with a waist-shaped hole for the plug rod to extend out.

[0009] By adopting the above technical solution, when the grounding switch is closed, the closing action of the grounding switch drives the drive component to move, the drive component drives the linkage column to rotate, the rotation of the linkage column drives the rotating rod to rotate synchronously, the rotation of the rotating rod drives the push plate to rotate synchronously, the rotation of the push plate will push the push block, and thus drive the push plate to move away from the locking rod. At this time, the return spring is pushed. Because one end of the rocker plate is rotatably connected to the push plate, and the end of the rocker plate away from the push plate is rotatably connected to the side wall of the cabinet, when the push plate moves away from the locking rod, it will drive the connecting piece connected to the rocker plate to move away from the locking rod. Because the locking ring is rotatably connected to the connecting piece and the locking ring is connected to the locking rod, the movement of the connecting piece will drive the locking rod to rotate, thereby allowing the locking tongue to extend into the locking hole to achieve the limit of the circuit breaker chassis. That is, when the grounding switch is closed, the circuit breaker chassis cannot be rocked into the cabinet to ensure the safety of the staff. Similarly, when the grounding switch is opened, the action of opening the grounding switch causes the rotating rod to rotate in the opposite direction. The rotation of the rotating rod causes the push plate to rotate synchronously, so that the push block is placed in the groove. At this time, the return spring is no longer pushed, and the return spring returns to its original position, which allows the push plate to move towards the side closer to the locking rod. This causes the locking rod to rotate in the opposite direction, so that the locking tongue no longer extends into the locking hole. The locking tongue no longer limits the circuit breaker chassis. That is, when the grounding switch is opened, the circuit breaker chassis can be swayed into the cabinet. And when the circuit breaker chassis is swayed into the cabinet, the locking tongue cannot extend into the locking hole due to the obstruction of the circuit breaker chassis. At this time, the grounding switch cannot be closed, so as to ensure the safety of the staff. In addition, the second locking plate has a waist-shaped hole for the insertion rod to extend, so that the locking tongue still has a certain amount of room for movement while being limited by the second locking plate, making the locking tongue more flexible. Furthermore, since the rocker is set parallel to the guide rail, after the rocker rotates, it remains parallel to the side wall of the guide rail. Therefore, the rocker moves zero distance in the horizontal direction of the guide rail, which makes the distance between the guide rail interlocking assembly and the side wall of the guide rail smaller, providing room for reducing the width of the cabinet and thus reducing the volume of the cabinet.

[0010] Optionally, the side wall of the cabinet is provided with a first limiting plate for restricting the rotation of the first locking plate and the second locking plate, and the side of the second locking plate away from the first locking plate is provided with a second limiting plate for restricting the rotation of the first locking plate and the second locking plate.

[0011] By adopting the above technical solution, the setting of the first limiting plate and the second limiting plate can restrict the rotation of the first locking plate and the second locking plate, prevent the first locking plate and the second locking plate from affecting the locking effect of the lock tongue on the circuit breaker chassis vehicle due to arbitrary rotation of the locking rod, and ensure the realization of the locking function of the lock tongue.

[0012] Optionally, the first locking plate has a first fixing hole, and the locking rod has a plurality of second fixing holes that cooperate with the first fixing hole.

[0013] By adopting the above technical solution, a first fixing hole is provided on the first locking plate, and a number of second fixing holes that cooperate with the first fixing hole are provided on the locking rod, so that the first locking plate and the locking rod can be fixed by a pin, so that the first locking plate has different installation positions, thereby allowing the locking tongue to be in different positions to adapt to different installation requirements.

[0014] Optionally, the grounding interlock assembly includes a fixing block mounted on a rotating rod, an L-shaped first connecting plate passing through the fixing block, the first connecting plate extending into a clearance groove, and an insulating plate connected to the first connecting plate, a second connecting plate connected to the end of the insulating plate away from the first connecting plate, a first fixing plate fixed to the cabinet and through which the second connecting plate passes, a second fixing plate for limiting the second connecting plate on the first fixing plate, a plug rotatably connected to the end of the second connecting plate away from the insulating plate, a fixing rod mounted on the side wall of the cabinet, and a tension spring connected to the second connecting plate and the first fixing plate, wherein the fixing rod has a fixing groove that mates with the plug.

[0015] By adopting the above technical solution, when using the electrical cabinet, the operator first needs to lock the rear cabinet door to the cabinet body with bolts. The fixing block supports the first connecting plate, making its movement more stable. When the rear cabinet door is closed, the fixing rod will push the second connecting plate closer to the first connecting plate. The insert block moves synchronously with the second connecting plate. Due to the obstruction of the first fixing plate, the insert block is limited by the first fixing plate. Since the insert block is rotatably connected to the second connecting plate, it will rotate relative to the second connecting plate. At this time, the insert block will insert into the fixing groove. Simultaneously, the movement of the second connecting plate will drive the first connecting plate to move, and the tension spring will be pulled. The first connecting plate extends into the fixing block through the clearance groove. When the grounding switch is tripped, the action of the grounding switch tripping will drive the drive component to move. The drive component will drive the linkage column to rotate, making the clearance groove and the first connecting plate misaligned. This will limit the first connecting plate to be confined within the fixing block, thus preventing the rear cabinet door from opening and locking the rear cabinet door to ensure the operator's safety. Similarly, when the rear cabinet door needs to be opened, the operator first needs to unscrew the bolts locking the door. When the grounding switch is closed, the action of closing the switch drives the drive assembly to move, which in turn drives the linkage column to rotate in the opposite direction. This prevents the first connecting plate from being misaligned with the fixing groove, allowing the first connecting plate to extend from the fixing block. Simultaneously, the tension spring resets, pulling the second connecting plate away from the first connecting plate. At this point, the first fixing plate can no longer limit the insertion block, and the insertion block can separate from the fixing groove under gravity, allowing the rear cabinet door to open. Furthermore, compared to existing technologies, where the first fixing plate is block-shaped and occupies a larger space, the improved first fixing plate is plate-shaped, occupying less space. This provides room for reducing the cabinet width, thus reducing the cabinet's overall size.

[0016] Optionally, the drive assembly includes a control rod mounted on the grounding switch, a connecting rod connected to the control rod, a first pull rod connected to the connecting rod, an adjusting rod connected to the first pull rod, a second pull rod connected to the adjusting rod, and a linkage rod connected to the second pull rod.

[0017] By adopting the above technical solution, when the grounding switch is closed, the closing action of the grounding switch will drive the control rod to rotate. The rotation of the control rod will drive the connecting rod to rotate synchronously. The rotation of the connecting rod will push the first pull rod away from the control rod. The first pull rod pushes the adjusting rod, causing the adjusting rod to move away from the control rod. The adjusting rod pushes the second pull rod, causing the second pull rod to move away from the control rod. The linkage rod is rotatably connected to the second pull rod. The second pull rod will push the linkage rod to move away from the control rod. The movement of the linkage rod will drive the linkage column to rotate, thereby driving the guide rail interlock assembly and the grounding interlock assembly to move. This will cause the lock tongue to extend into the locking hole to limit the circuit breaker chassis, ensuring the safety of the personnel. At the same time, it will also prevent the plug rod from extending into the fixing slot. At this time, the rear cabinet door can be opened. Similarly, when the grounding switch is tripped, the tripping action will cause the control rod to rotate in the opposite direction, which in turn will cause the linkage column to rotate in the opposite direction, which in turn will cause the guide rail interlocking assembly and the grounding interlocking assembly to move, so that the locking tongue no longer extends into the locking hole. At this time, the circuit breaker chassis can be swayed into the cabinet, and the plug rod can also be inserted into the fixing slot. At this time, the rear cabinet door cannot be opened to ensure the safety of the staff.

[0018] Optionally, the valve interlocking assembly includes a scissor mechanism and a first and second valve plate connected to the scissor mechanism. The first and second valve plates are located on one side of the contact box. A guide rod is connected to the side wall of the cabinet and slidably connected to the first and second valve plates. The scissor mechanism includes a mounting frame, a first and second scissor foot rotatably mounted on the mounting frame, and a reset torsion spring mounted on the mounting frame for resetting the first and second scissor feet. The first scissor foot is connected to a first connecting rod, and the second scissor foot is connected to a second connecting rod. The first connecting rod is connected to the first valve plate, and the second connecting rod is connected to the second valve plate. The first scissor foot is provided with a first push rod, and the second scissor foot is provided with a second push rod. The first and second scissor feet are arranged to converge inward.

[0019] By adopting the above technical solution, when the circuit breaker chassis is swayed into the cabinet, the circuit breaker chassis and the components placed on the circuit breaker base plate will push the first push rod and the second push rod, so that the first scissor legs and the second scissor legs can move closer to each other while rotating on the mounting frame. That is, the first scissor legs will move towards the side closer to the second scissor legs. The first scissor legs will pull the first connecting rod, and the first connecting rod will pull the first valve plate, so that the first valve plate will slide on the guide rod, thereby exposing the contact box that was covered by the first valve plate. The second scissor legs will move towards the side closer to the first scissor legs, and the second scissor legs will push the second connecting rod, and the second connecting rod will push the second valve plate, so that the second valve plate will slide on the guide rod, thereby exposing the contact box that was covered by the second valve plate. The components on the circuit breaker chassis can then be inserted into the contact box. Similarly, when the circuit breaker chassis is swayed out of the cabinet, the first and second push rods are no longer pushed by the circuit breaker chassis and the components placed on the circuit breaker chassis. The reset torsion spring resets, causing the first scissor leg to move away from the second scissor leg. The first scissor leg will push the first connecting rod, and the first connecting rod will push the first valve plate, causing the first valve plate to slide on the guide rod, thus causing the contact box to be blocked by the first valve plate again. The second scissor leg moves away from the first scissor leg, and the second scissor leg will pull the second connecting rod, and the second connecting rod will pull the second valve plate, causing the second valve plate to slide on the guide rod, thus causing the contact box to be blocked by the second valve plate again. The first and second hinged door panels prevent accidental electric shock to staff, ensuring their safety. Furthermore, the inward-sloping design of the first and second scissor legs ensures sufficient movement even when the cabinet width is reduced, guaranteeing their functionality and providing room for further reduction in cabinet size.

[0020] Optionally, the inner wall of the cabinet is provided with a plurality of mounting plates, and the mounting plates are provided with mounting brackets, which are located on the side of the mounting plates near the side wall of the cabinet.

[0021] By adopting the above technical solution, the cabinet volume is reduced due to the reduced width of the cabinet. Several mounting plates are provided on the inner wall of the cabinet, and mounting racks are provided on the mounting plates. The mounting racks are set on the side of the mounting plates near the side wall of the cabinet, which can improve the utilization rate of the internal space of the cabinet. The mounting plates can be installed on the inner wall of the cabinet through the mounting racks, and the components can be installed on the side of the mounting racks near the side wall of the cabinet.

[0022] Optionally, one end of the adjusting rod is threaded into the first pull rod, and the other end of the adjusting rod is threaded into the second pull rod.

[0023] By adopting the above technical solution, the setting of one end of the adjusting rod being threaded with the first pull rod and the other end being threaded with the second pull rod allows the distance between the first pull rod and the second pull rod to be adjusted through the threaded engagement with the adjusting rod. When the drive assembly deviates from the drive of the guide rail interlock assembly and the grounding interlock assembly, it is convenient for the staff to adjust the drive assembly, making the drive of the drive assembly to the guide rail interlock assembly and the grounding interlock assembly more precise.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. By adding a composite insulation structure between adjacent grounding switches and adjacent contact boxes, the electrical clearance between adjacent grounding switches and adjacent contact boxes can be reduced, thereby reducing the distance between adjacent grounding switches and adjacent contact boxes and providing room for reducing the size of the cabinet.

[0026] 2. The first and second scissor legs are designed to taper inwards, so that when the width of the cabinet is reduced, the first and second scissor legs still have enough room to move, ensuring that the functions of the first and second scissor legs are realized and providing room for the reduction in cabinet volume.

[0027] 3. The connecting piece of the rocker is closer to the pivot point than the push plate. Therefore, the actual movement distance of the push plate is greater than that of the connecting piece, which is equivalent to compressing the amount of movement distance. The amount of movement distance compressed is transmitted to the linkage rod, which just makes the lock tongue lock. Therefore, reducing the movement distance is equivalent to reducing the space it occupies, providing room for the cabinet width to be reduced, and thus reducing the volume of the cabinet. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0029] Figure 2 This is a schematic diagram illustrating the structure of the grounding switch in an embodiment of this application;

[0030] Figure 3 This is a schematic diagram illustrating the structure of the insulating cover in an embodiment of this application;

[0031] Figure 4 This is a schematic diagram illustrating the structure of the driving component in an embodiment of this application;

[0032] Figure 5 yes Figure 4 The enlarged diagram at point A in the image is used to illustrate the structure of the adjusting rod.

[0033] Figure 6 This is a schematic diagram illustrating the structure of the guide rail interlocking assembly in an embodiment of this application;

[0034] Figure 7 yes Figure 6 The enlarged schematic diagram at point B in the diagram is used to show the structure of the first locking plate;

[0035] Figure 8 This is a schematic diagram illustrating the structure of the grounding interlocking assembly in an embodiment of this application;

[0036] Figure 9 This is an enlarged schematic diagram of embodiment C of this application, used to show the structure of the fixing groove;

[0037] Figure 10 This is a schematic diagram illustrating the structure of the valve interlocking assembly in an embodiment of this application;

[0038] Figure 11 This is a schematic diagram illustrating the structure of the reset torsion spring in an embodiment of this application;

[0039] Figure 12 This is a schematic diagram of the structure when the first and second scissor legs of the embodiment of this application intersect;

[0040] Figure 13 This is a schematic diagram illustrating the structure of the mounting plate in an embodiment of this application.

[0041] In the diagram, 1. Cabinet; 11. Front cabinet door; 12. Rear cabinet door; 13. Mounting plate; 14. Mounting bracket; 2. Operating mechanism; 21. Circuit breaker chassis; 22. Contact box; 3. Triggering mechanism; 31. Insulating cover; 32. Insulating sleeve; 4. Drive assembly; 41. Control rod; 42. Connecting rod; 43. First pull rod; 44. Adjusting rod; 45. Second pull rod; 46. Linkage rod; 5. Guide rail interlocking assembly; 51. Guide rail; 511. Locking hole; 52. Linkage column; 521. Clearance groove; 522. Rotating rod; 523. Push plate; 524. Groove; 53. Push plate; 531. Push block; 54. Rocker; 541. Return spring; 55. Connecting piece; 551. Locking ring; 56. Locking rod; 561. Second fixing hole; 57. First locking plate; 571. 572. First fixing hole; 573. Insert rod; 574. Locking tongue; 58. Second locking plate; 585. Waist-shaped hole; 586. First limiting plate; 59. Second limiting plate; 6. Grounding interlock assembly; 61. Fixing block; 62. First connecting plate; 63. Insulating plate; 64. Second connecting plate; 65. First fixing plate; 66. Second fixing plate; 67. Insert block; 68. Fixing rod; 681. Fixing groove; 69. Tension spring; 7. Valve interlock assembly; 71. Scissor piece; 711. Mounting frame; 712. First scissor foot; 713. First push rod; 714. Second scissor foot; 715. Second push rod; 72. Return torsion spring; 73. First connecting rod; 74. Second connecting rod; 75. First valve plate; 76. Second valve plate; 77. Guide rod; 8. Column; 9. Grounding switch. Detailed Implementation

[0042] The present application will be further described in detail below with reference to all the accompanying drawings.

[0043] This embodiment discloses an electrical cabinet. (Refer to...) Figure 1 An electrical cabinet includes a cabinet body 1, with a front door 11 and a rear door 12. The cabinet body 1 houses an operating mechanism 2, a triggering mechanism 3, and a grounding switch 9. The operating mechanism 2 includes several contact boxes 22, a guide rail 51, and a circuit breaker chassis 21 slidably connected to the guide rail 51. The triggering mechanism 3 includes a drive assembly 4 connected to the grounding switch 9, a guide rail interlocking assembly 5 connected to the drive assembly 4, and a grounding interlocking assembly 6. The triggering mechanism 3 also includes a door interlocking assembly 7 connected to the circuit breaker chassis 21. The drive assembly 4 is used to cooperate with the grounding switch 9 in opening and closing and to provide structural clearance to the cabinet body 1. The guide rail interlocking assembly 5 is used to cooperate with the drive assembly 4 and to provide structural clearance to the cabinet body 1. The grounding interlocking assembly 6 is used to cooperate with the drive assembly 4 and to provide structural clearance to the cabinet body 1. The door interlocking assembly 7 is used to cooperate with the circuit breaker chassis 21 and to provide structural clearance to the cabinet body 1.

[0044] Reference Figure 2 and Figure 3 Several grounding switches 9 and contact boxes 22 are covered with insulating sleeves 32, and insulating covers 31 are provided between adjacent grounding switches 9. If the distance between adjacent contact boxes 22 and adjacent grounding switches 9 is too close, an electric arc will be generated and discharged between adjacent contact boxes 22 and adjacent grounding switches 9, which will cause a short circuit hazard between contact boxes 22 and grounding switches 9. If workers work at close range, there will be a risk of electric shock. Therefore, it is necessary to control the gap between adjacent grounding switches 9 and adjacent contact boxes 22. For an electrical cabinet with a rated voltage of 12kV, the minimum electrical clearance is 125mm. If air and insulating covers 31 are used as composite insulation, the minimum electrical clearance between adjacent insulating covers 31 can be reduced to 30mm. The setting of insulating sleeves 32 and insulating covers 31 makes the electrical clearance between adjacent grounding switches 9 and adjacent contact boxes 22 smaller, which can reduce the distance between adjacent grounding switches 9 and adjacent contact boxes 22, providing room for reducing the size of the cabinet 1. Furthermore, the structures of the drive assembly 4, guide rail interlock assembly 5, grounding interlock assembly 6, and door interlock assembly 7 have all been adapted to fit the reduction in the volume of the cabinet 1, so that the components inside the cabinet 1 will not interfere with each other and the electrical clearances still meet national standards.

[0045] Reference Figure 4 and Figure 5The drive assembly 4 includes a control rod 41 and a connecting rod 42. The connecting rod 42 is connected to the control rod 41. A first pull rod 43 is connected to the connecting rod 42. An adjusting rod 44 is connected to the first pull rod 43. A second pull rod 45 is connected to the adjusting rod 44. A linkage rod 46 is connected to the second pull rod 45. The movement of the linkage rod 46 will drive the guide rail interlock assembly 5 to move. One end of the adjusting rod 44 is threaded with the first pull rod 43, and the other end of the adjusting rod 44 is threaded with the second pull rod 45. This allows the distance between the first pull rod 43 and the second pull rod 45 to be adjusted through the threaded engagement with the adjusting rod 44. When there is a deviation in the drive of the drive assembly 4 for the guide rail interlock assembly 5 and the grounding interlock assembly 6, it is convenient for the operator to adjust the drive assembly 4, making the drive of the drive assembly 4 for the guide rail interlock assembly 5 and the grounding interlock assembly 6 more precise.

[0046] Reference Figure 6 and Figure 7 The guide rail interlock assembly 5 includes a linkage column 52 connected to the linkage rod 46. A rotating rod 522 passes through the linkage column 52 and rotates synchronously with the linkage column 52. A push plate 523 is fixedly connected to the end of the rotating rod 522 away from the linkage column 52. A groove 524 is provided on the push plate 523. The guide rail interlock assembly 5 also includes a push plate 53. A push block 531 that cooperates with the groove 524 is provided on the push plate 53. A rocker plate 54 is rotatably connected to the push plate 53. The rocker plate 54 is arranged parallel to the guide rail 51. The end of the rocker plate 54 away from the push plate 53 is rotatably connected to the inner wall of the cabinet 1. A connecting piece 55 is rotatably connected to the middle of the rocker plate 54. A locking ring 551 is rotatably connected to the connecting piece 55. A locking rod 56 passes through the locking ring 551 and rotates synchronously with the locking ring 551 and the locking rod 56. A first locking plate 57, which rotates synchronously with the locking rod 56, passes through the locking rod 56. A second locking plate 58 also passes through the locking rod 56, and the locking rod 56 and the second locking plate 58 are rotatably connected. A plug rod 572 passes through the first locking plate 57, and a locking tongue 573 is rotatably connected to the plug rod 572. The second locking plate 58 has an oblong hole 581 for the plug rod 572 to extend out, and the guide rail 51 has a locking hole 511 for the locking tongue 573 to extend into. The first locking plate 57 has a first fixing hole 571, and the locking rod 56 has several second fixing holes 561 that mate with the first fixing hole 571. A pin can be inserted between the first fixing hole 571 and the second fixing hole 561 to fix the first locking plate 57 and the locking rod 56. The presence of several second fixing holes 561 allows the first locking plate 57 to have different installation positions, thereby allowing the locking tongue 573 to be in different positions to adapt to different installation requirements.

[0047] Reference Figure 4 and Figure 6When the grounding switch 9 is closed, the closing action of the grounding switch 9 will drive the control rod 41 to rotate. The rotation of the control rod 41 will drive the connecting rod 42 to rotate synchronously. The rotation of the connecting rod 42 will push the first pull rod 43 away from the control rod 41. The first pull rod 43 will push the adjusting rod 44, causing the adjusting rod 44 to move away from the control rod 41. The adjusting rod 44 will push the second pull rod 45, causing the second pull rod 45 to move away from the control rod 41. The linkage rod 46 is rotatably connected to the second pull rod 45. The second pull rod 45 will push the linkage rod 46 to rotate away from the control rod 41. The rotation of the linkage rod 46 will drive the linkage column 52 to rotate synchronously. The rotation of the linkage column 52 will drive the rotating rod 522 to rotate synchronously. The rotation of the rotating rod 522 will drive the push plate 523 to rotate synchronously. The rotation of the push plate 523 will push the push block 531, thereby causing the push plate 53 to move away from the locking rod 56.

[0048] Reference Figure 4 and Figure 6 A return spring 541 is provided at the end of the push plate 53 away from the locking rod 56. At this time, the return spring 541 is pushed. Since one end of the rocker plate 54 is rotatably connected to the push plate 53, and the end of the rocker plate 54 away from the push plate 53 is rotatably connected to the side wall of the cabinet 1, when the push plate 53 moves away from the locking rod 56, it will drive the connecting piece 55 connected to the rocker plate 54 to move away from the locking rod 56. Since the locking ring 551 is rotatably connected to the connecting piece 55 and the locking ring 551 is connected to the locking rod 56, the movement of the connecting piece 55 will drive the locking rod 56 to rotate, so that the locking tongue 573 extends into the locking hole 511 to achieve the limit of the circuit breaker chassis 21. That is, when the grounding switch 9 is closed, the circuit breaker chassis 21 cannot be rocked into the cabinet 1 to ensure the safety of the staff.

[0049] Reference Figure 4 and Figure 6 When the grounding switch 9 is opened, the action of opening the grounding switch 9 will drive the control rod 41 to rotate in the opposite direction. The rotation of the control rod 41 will drive the linkage column 52 to rotate in the opposite direction, which in turn will drive the rotating rod 522 to rotate synchronously. The rotation of the rotating rod 522 will drive the push plate 523 to rotate synchronously, so that the push block 531 is placed in the groove 524. At this time, the return spring 541 is no longer pushed and the return spring 541 is reset, which will allow the push plate 53 to move towards the side closer to the locking rod 56, thereby causing the locking rod 56 to rotate in the opposite direction. As a result, the locking tongue 573 will no longer extend into the locking hole 511, and the locking tongue 573 will no longer limit the circuit breaker chassis 21. That is, when the grounding switch 9 is opened, the circuit breaker chassis 21 can be swayed into the cabinet 1. When the circuit breaker chassis 21 is swayed into the cabinet 1, the locking tongue 573 cannot extend into the locking hole 511 due to the obstruction of the circuit breaker chassis 21. At this time, the grounding switch 9 cannot be closed to ensure the safety of the staff.

[0050] Reference Figure 4 and Figure 6 The second locking plate 58 has an oblong hole 581 for the insertion rod 572 to extend out. The oblong hole 581 allows the latch 573 to have some room to move while being limited by the second locking plate 58, making the latch 573 more flexible. Since the rocker 54 is parallel to the guide rail 51, after the rocker 54 rotates, it remains parallel to the side wall of the guide rail 51. Therefore, the rocker 54 moves zero distance in the horizontal direction of the guide rail 51. Since the connecting piece 55 on the rocker 54 is closer to the pivot point than the push plate 53, the actual movement distance of the push plate 53 is greater than that of the connecting piece 55. This is equivalent to compressing the movement distance of the connecting piece 55. The compressed movement distance of the connecting piece 55 is transmitted to the linkage rod 46, which just makes the latch 573 lock. Therefore, reducing the movement distance of the connecting piece 55 is equivalent to reducing the space occupied by the connecting piece 55, providing room for the reduction of the width of the cabinet 1, and thus reducing the volume of the cabinet 1.

[0051] Reference Figure 6 and Figure 7 The cabinet 1 has a first limiting plate 582 on its side wall and a second limiting plate 59 on the side of the second locking plate 58 away from the first locking plate 57. The setting of the first limiting plate 582 and the second limiting plate 59 can restrict the rotation of the first locking plate 57 and the second locking plate 58, prevent the first locking plate 57 and the second locking plate 58 from affecting the locking effect of the locking tongue 573 on the circuit breaker chassis 21 as the locking rod 56 rotates arbitrarily, and ensure the realization of the locking function of the locking tongue 573.

[0052] Reference Figure 5 and Figure 8 The grounding interlock assembly 6 includes a fixing block 61, which is fixed to the cabinet 1. A rotating rod 522 passes through the fixing block 61. An L-shaped first connecting plate 62 is slidably connected inside the fixing block 61. An insulating plate 63 is connected to the first connecting plate 62. A second connecting plate 64 is connected to the end of the insulating plate 63 away from the first connecting plate 62. The fixing block 61 supports the first connecting plate 62, making its movement more stable. A first fixing plate 65 is fixed to the inner wall of the cabinet 1. The second connecting plate 64 passes through the first fixing plate 65. A second fixing plate 66 is connected to the first fixing plate 65. The second connecting plate 64 is positioned between the first fixing plate 65 and the second fixing plate 66. An insert block 67 is rotatably connected to the end of the second connecting plate 64 away from the first connecting plate 62. A clearance groove 521 is provided on the linkage column 52, allowing the first connecting plate 62 to pass through.

[0053] Reference Figure 8 and Figure 9The rear cabinet door 12 is provided with a fixing rod 68 that moves synchronously with the opening and closing movement of the rear cabinet door 12. The fixing rod 68 is provided with a fixing groove 681, and the insert block 67 can be inserted into the fixing groove 681 to lock the rear cabinet door 12.

[0054] Reference Figure 5 and Figure 8 When the rear cabinet door 12 is closed, when using the electrical cabinet, the operator first needs to lock the rear cabinet door 12 to the cabinet body 1 using bolts. The fixing rod 68 will push the second connecting plate 64 towards the first connecting plate 62. The insert block 67 moves synchronously with the second connecting plate 64. Due to the obstruction of the first fixing plate 65, the insert block 67 is limited by the first fixing plate 65. Since the insert block 67 is rotatably connected to the second connecting plate 64, the insert block 67 will rotate relative to the second connecting plate 64. At this time, the insert block 67 will insert into the fixing slot 681. The movement of the second connecting plate 64 will cause the first connecting plate 62 to move, and the tension spring 69 will be pulled. The first connecting plate 62 extends into the fixed block 61 through the relief groove 521. When the grounding switch 9 is tripped, the tripping action of the grounding switch 9 will drive the drive component 4 to move. The drive component 4 will drive the linkage column 52 to rotate, so that the relief groove 521 and the first connecting plate 62 are misaligned, thereby limiting the first connecting plate 62 to the fixed block 61. At this time, the rear cabinet door 12 cannot be opened, thus locking the rear cabinet door 12 to ensure the safety of the staff.

[0055] Reference Figure 5 and Figure 8When the rear cabinet door 12 needs to be opened, the operator first needs to unscrew the bolts locking the rear cabinet door 12. When the grounding switch 9 is closed, the action of the grounding switch 9 drives the drive component 4 to move. The drive component 4 drives the linkage column 52 to rotate in the opposite direction, so that the first connecting plate 62 and the fixing groove 681 are no longer misaligned. The first connecting plate 62 can extend out from the fixing block 61. At the same time, the tension spring 69 returns to its original position, pulling the second connecting plate 64 to move away from the first connecting plate 62. At this time, the first fixing plate 65 will no longer be able to limit the insertion block 67. The insertion block 67 can then separate from the fixing groove 681 under the action of gravity, and the rear cabinet door 12 can be opened. Compared with the prior art, the first fixing plate 65 in the prior art is block-shaped and occupies a large space, while the improved first fixing plate 65 is plate-shaped and occupies a small space. Furthermore, the existing first fixing plate 65 is separated from the side wall of the cabinet 1 and placed inside the cabinet 1. The slot on the first fixing plate 65 for the second connecting plate 64 to pass through is also located relatively close to the center. In contrast, the improved first fixing plate 65 is positioned closer to the side wall of the cabinet 1. At the same time, the slot on the first fixing plate 65 for the second connecting plate 64 to pass through is also located close to the side wall of the cabinet 1. The connection point of the first fixing plate 65 is also connected to the side wall of the cabinet 1, providing room for the reduction in the width of the cabinet 1, thereby reducing the volume of the cabinet 1.

[0056] Reference Figure 10 and Figure 11 The valve interlocking assembly 7 includes a scissor piece 71, a first valve plate 75 connected to the scissor piece 71, and a second valve plate 76 connected to the scissor piece 71. The first valve plate 75 and the second valve plate 76 can cover the contact box 22. The inner wall of the cabinet 1 is provided with a guide rod 77 that is slidably connected to the first valve plate 75 and the second valve plate 76. The scissor assembly 71 includes a mounting frame 711, a first scissor leg 712 and a second scissor leg 714 rotatably connected to the mounting frame 711. The mounting frame 711 is provided with a reset torsion spring 72, which is used to reset the first scissor leg 712 and the second scissor leg 714. The first scissor leg 712 is connected to a first connecting rod 73, and the end of the first connecting rod 73 away from the first scissor leg 712 is connected to a first valve plate 75. The first scissor leg 712 is also provided with a first push rod 713. The second scissor leg 714 is connected to a second connecting rod 74, and the end of the second connecting rod 74 away from the second scissor leg 714 is connected to a second valve plate 76. The second scissor leg 714 is also provided with a second push rod 715.

[0057] Reference Figure 11 and Figure 12When the circuit breaker chassis 21 is swayed into the cabinet 1, the circuit breaker chassis 21 and the components placed on the circuit breaker base plate will push the first push rod 713 and the second push rod 715. Since the first scissor leg 712 and the second scissor leg 714 are rotatably connected to the mounting frame 711, the first scissor leg 712 will move towards the side closer to the second scissor leg 714. The movement of the first scissor leg 712 will pull the first connecting rod 73. The first connecting rod 73 will pull the first valve plate 75, causing the first valve plate 75 to slide on the guide rod 77, thereby exposing the contact box 22 that was covered by the first valve plate 75. Similarly, the second scissor leg 714 will move towards the side closer to the first scissor leg 712. The movement of the second scissor leg 714 will push the second connecting rod 74, and the second connecting rod 74 will push the second valve plate 76, causing the second valve plate 76 to slide on the guide rod 77, thereby exposing the contact box 22 that was covered by the second valve plate 76, so that the components on the circuit breaker chassis 21 can be inserted into the contact box 22.

[0058] Reference Figure 10 and Figure 11 When the circuit breaker chassis 21 is swung out of the cabinet 1, the first push rod 713 and the second push rod 715 are no longer pushed by the circuit breaker chassis 21 and the components placed on the circuit breaker chassis 21. The reset torsion spring 72 resets, causing the first scissor leg 712 to move away from the second scissor leg 714. The first scissor leg 712 will push the first connecting rod 73, which will push the first valve plate 75, causing the first valve plate 75 to slide on the guide rod 77, thus causing the contact box 22 to be blocked by the first valve plate 75 again. Similarly, the second scissor leg 714 will move away from the first scissor leg 712, pulling the second connecting rod 74, which will pull the second valve plate 76, causing the second valve plate 76 to slide on the guide rod 77, thus causing the contact box 22 to be blocked by the second valve plate 76 again. The first and second flaps 75 and 76 prevent accidental electric shock to staff, ensuring their safety. Furthermore, the inward-sloping feet 712 and 714 allow for sufficient movement even when the cabinet 1's width is reduced, ensuring their functionality and providing room for the cabinet 1's size to be reduced.

[0059] Reference Figure 13 The cabinet 1 has a column 8 on its edge. In order to reduce the width of the cabinet 1 and reduce its volume, the width of the column 8 has also been reduced. The width of the improved column 8 is smaller than that of the existing column 8, thereby reducing the overall width of the cabinet 1. The reduced width of the column 8 meets the requirement of reducing the width of the cabinet 1 from 650mm to 550mm, thus reducing the volume of the cabinet 1.

[0060] Reference Figure 13 The addition of insulating cover 31 and insulating sleeve 32, the inward convergence of first scissor legs 712 and second scissor legs 714, the parallel arrangement of rocker arm 54 and guide rail 51, the transformation of first fixing plate 65 from its original block shape to a smaller plate shape, and the reduction in the width of column 8 all provide space for the reduction in the width of cabinet 1, thus reducing the volume of cabinet 1. When the volume of cabinet 1 is reduced, the components placed inside cabinet 1 will not interfere with each other, and the electrical clearances meet national standards.

[0061] Reference Figure 13 The inner wall of the cabinet 1 is provided with several mounting plates 13, and mounting brackets 14 are provided on the mounting plates 13. The mounting brackets 14 are located on the side of the mounting plate 13 near the side wall of the cabinet 1. Due to the reduced width of the cabinet 1, the installation of the mounting plates 13 can improve the utilization rate of the internal space of the cabinet 1. The mounting plates 13 can be installed on the inner wall of the cabinet 1 through the mounting brackets 14, and the components can be installed on the side of the mounting brackets 14 near the side wall of the cabinet 1.

[0062] The implementation principle of this application embodiment is as follows: An insulating cover 31 is added between adjacent grounding switches 9, and an insulating sleeve 32 is provided on both the contact box 22 and the grounding switch 9, so that the electrical gap between adjacent grounding switches 9 and the electrical gap between adjacent contact boxes 22 can be reduced, thereby reducing the distance between adjacent grounding switches 9 and adjacent contact boxes 22; the first scissor legs 712 and the second scissor legs 714 are arranged to converge inward, so that when the width of the cabinet 1 is reduced, the first scissor legs 712 and the second scissor legs 714 still have sufficient range of motion to ensure the function of the first scissor legs 712 and the second scissor legs 714; the rocker arm 54 is arranged parallel to the guide rail 51. After the rocker arm 54 rotates, the rocker arm 54 is still arranged parallel to the side wall of the guide rail 51, so the horizontal movement distance of the rocker arm 54 in the guide rail 51 is zero. Since the connecting piece 55 provided on the rocker arm 54 is closer to the rotation fulcrum than the push plate 53, the movement distance of the push plate 53 is actually The distance of the connecting piece 55 is greater than the distance of the connecting piece 55, which is equivalent to compressing the distance of the connecting piece 55. The compressed distance of the connecting piece 55 is transmitted to the linkage rod 46 and just makes the locking tongue 573 lock. Therefore, reducing the distance of the connecting piece 55 is equivalent to reducing the space occupied by the connecting piece 55. The fixing block 61 is changed from a block shape to a plate shape, which reduces the space occupied by the fixing block 61. The width of the column 8 is also reduced, which reduces the width of the cabinet 1. The addition of the insulating cover 31 and the insulating sleeve 32, the inward setting of the first scissor foot 712 and the second scissor foot 714, the parallel setting of the rocker 54 and the guide rail 51, the change of the fixing block 61 from a block shape to a smaller plate shape, and the reduction of the width of the column 8 all provide room for the reduction of the width of the cabinet 1, which reduces the volume of the cabinet 1. When the volume of the cabinet 1 is reduced, the components placed in the cabinet 1 will not interfere with each other and the electrical clearance meets the national standards.

[0063] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electrical cabinet comprising a cabinet body (1), a front cabinet door (11) and a rear cabinet door (12) being provided on the cabinet body (1), an operating mechanism (2), a triggering mechanism (3) and a grounding switch (9) being provided in the cabinet body (1), the operating mechanism (2) comprising a circuit breaker chassis vehicle (21) and a plurality of contact boxes (22), characterized in that: Composite insulation structure is arranged between adjacent ground switches (9) and between adjacent contact boxes (22), the trigger mechanism (3) further comprises a driving assembly (4) for cooperating with the ground switch (9) to open and close and structurally avoiding the cabinet (1), a guide rail interlocking assembly (5) for cooperating with the driving assembly (4) and structurally avoiding the cabinet (1), a grounding interlocking assembly (6) for cooperating with the driving assembly (4) and structurally avoiding the cabinet (1), and a shutter interlocking assembly (7) for cooperating with the circuit breaker chassis car (21) and structurally avoiding the cabinet (1); The guide rail interlocking assembly (5) comprises a guide rail (51) in sliding connection with the circuit breaker chassis car (21), the guide rail (51) is provided with a locking hole (511), the guide rail interlocking assembly (5) further comprises a linkage column (52) connected with the driving assembly (4), the linkage column (52) is provided with a displacement slot (521), the linkage column (52) is provided with a rotating rod (522) rotating synchronously with the linkage column (52), one end of the rotating rod (522) away from the linkage column (52) is connected with a push disc (523), the push disc (523) is provided with a groove (524), the push disc (523) is matched with a push plate (53), the push plate (53) is provided with a push block (531) matched with the groove (524), the push plate (53) is rotatably connected with a flap (54) horizontally arranged on the side wall of the guide rail (51), one end of the push plate (53) away from the flap (54) is provided with a return spring (541), one end of the flap (54) away from the push plate (53) is rotatably connected with the side wall of the cabinet (1), the flap (54) is connected with a connecting piece (55), one end of the connecting piece (55) away from the flap (54) is rotatably connected with a locking ring (551), the locking ring (551) is provided with a locking rod (56) rotatably connected with the cabinet (1), one end of the locking rod (56) is connected with a first locking plate (57) rotating synchronously with the locking rod (56), the first locking plate (57) is provided with an insertion rod (572), the insertion rod (572) is rotatably connected with a locking tongue (573) capable of extending into the locking hole (511), the locking rod (56) is rotatably connected with a second locking plate (58) for limiting the rotation of the locking tongue (573), the second locking plate (58) is provided with a waist-shaped hole (581) for the insertion rod (572) to extend out. The ground interlocking assembly (6) comprises a fixed block (61) arranged on the rotating rod (522), a first connecting plate (62) in L shape arranged in the fixed block (61), the first connecting plate (62) can extend into the accommodating slot (521), the ground interlocking assembly (6) further comprises an insulating plate (63) connected with the first connecting plate (62), a second connecting plate (64) connected with one end of the insulating plate (63) away from the first connecting plate (62), a first fixed plate (65) fixed on the cabinet (1) and arranged for the second connecting plate (64), a second fixed plate (66) for limiting the second connecting plate (64) on the first fixed plate (65), a plug block (67) rotatably connected with one end of the second connecting plate (64) away from the insulating plate (63), a fixed rod (68) arranged on the side wall of the cabinet (1), and a tension spring (69) connected with the second connecting plate (64) and the first fixed plate (65), the fixed rod (68) is provided with a fixed slot (681) matched with the plug block (67). The driving assembly (4) comprises a control rod (41) arranged on the grounding switch (9), a connecting rod (42) connected with the control rod (41), a first pull rod (43) connected with the connecting rod (42), an adjusting rod (44) connected with the first pull rod (43), a second pull rod (45) connected with the adjusting rod (44), and a linkage rod (46) connected with the second pull rod (45).

2. An electrical cabinet according to claim 1, characterised in that: The side wall of the cabinet (1) is provided with a first limiting plate (582) for limiting the rotation of the first locking plate (57) and the second locking plate (58), one side of the second locking plate (58) away from the first locking plate (57) is provided with a second limiting plate (59) for limiting the rotation of the first locking plate (57) and the second locking plate (58).

3. An electrical cabinet according to claim 2, characterised in that: The first locking plate (57) is provided with a first fixed hole (571), and the locking rod (56) is provided with a plurality of second fixed holes (561) matched with the first fixed hole (571).

4. An electrical cabinet according to claim 1, characterized in that: The valve interlocking assembly (7) comprises a scissors piece (71), a first valve plate (75) and a second valve plate (76) connected with the scissors piece (71), the first valve plate (75) and the second valve plate (76) are arranged on one side of the contact box (22), a guide rod (77) slidably connected with the first valve plate (75) and the second valve plate (76) is arranged on the side wall of the cabinet body (1), the scissors piece (71) comprises a mounting frame (711), a first scissors leg (712) and a second scissors leg (714) rotatably arranged on the mounting frame (711), and a reset torsional spring (72) arranged on the mounting frame (711) is used for resetting the first scissors leg (712) and the second scissors leg (714), the first scissors leg (712) is connected with a first connecting rod (73), the second scissors leg (714) is connected with a second connecting rod (74), the first connecting rod (73) is connected with the first valve plate (75), and the second connecting rod (74) is connected with the second valve plate (76), the first scissors leg (712) is provided with a first push rod (713), the second scissors leg (714) is provided with a second push rod (715), and the first scissors leg (712) and the second scissors leg (714) are arranged inwards.

5. An electrical cabinet according to claim 1, characterized in that: A plurality of mounting plates (13) are arranged on the inner wall of the cabinet body (1), mounting frames (14) are arranged on the mounting plates (13), and the mounting frames (14) are arranged on the side of the mounting plates (13) close to the side wall of the cabinet body (1).

6. An electrical cabinet according to claim 1, characterized in that: One end of the adjusting rod (44) is threadedly connected with the first pull rod (43), and the other end of the adjusting rod (44) is threadedly connected with the second pull rod (45).

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