An intelligent switch cabinet based on maintenance power-off protection and its maintenance method

Abstract

The present invention relates to a power distribution equipment, specifically an intelligent switch cabinet based on maintenance power-off protection and a maintenance method thereof, wherein one of the intelligent switch cabinets based on maintenance power-off protection comprises: a shell installed in the switch cabinet, the shell being connected in series with a power supply and components in the switch cabinet; a power-off mechanism is arranged in the shell, the power-off mechanism comprises a magnetic attraction component and a locking component, the magnetic attraction component comprises a moving part slidingly arranged in the shell, the moving part is connected to a push rod rotatably arranged on the shell through a deflection structure, when the current flowing through the shell is too large, the moving part cooperates with the locking component to disconnect the circuit in the shell, and when the moving part moves, the deflection structure is triggered, which drives the push rod to rotate relative to the shell; a prediction component is arranged in the shell, comprising a barrier member slidingly arranged in the shell, when the input current is too large, the barrier member cooperates with the deflection structure to lock the push rod, thereby prompting the maintenance personnel that a fault occurs in the shell.

Description

Technical Field

[0001] The present invention relates to power distribution equipment, in particular to an intelligent switch cabinet based on maintenance power-off protection and a maintenance method thereof. Background Art

[0002] Power switchgear is a type of switchgear that plays a vital role in power systems. It's a power distribution device that assembles related electrical equipment into a closed metal enclosure according to a specific circuit scheme. When a power or line fault occurs, the switchgear can quickly disconnect the faulty component from the grid, ensuring the safe operation of other healthy parts of the power system while also protecting equipment and maintenance personnel.

[0003] However, there are many factors that may cause switch cabinet failures, such as excessive current, power tripping, and excessive internal temperature. After eliminating the temperature factor, if the switch cabinet still cannot work normally, it is necessary to check the protection devices in the switch cabinet. The protection devices in the switch cabinet include but are not limited to air switches, disconnectors, load switches, circuit breakers, and relays. At this time, the troubleshooting process for circuit breakers is relatively complicated, and usually instruments need to be used to inspect and test the circuit breakers. If the internal components of the circuit breaker are found to be damaged, they need to be disassembled and replaced, which is an extremely time-consuming and labor-intensive process. Summary of the Invention

[0004] The object of the present invention is to provide an intelligent switch cabinet based on maintenance power-off protection and a maintenance method thereof, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An intelligent switch cabinet based on maintenance power-off protection, comprising: a housing installed in the switch cabinet, the housing being connected in series with a power supply and components in the switch cabinet;

[0007] A power-off mechanism is provided in the housing, and the power-off mechanism includes a magnetic attraction component and a locking component. The magnetic attraction component includes a moving part slidably provided in the housing, and the moving part is connected to a push rod rotatably mounted on the housing via a deflection structure. When the current flowing through the housing is too large, the moving part cooperates with the locking component to disconnect the circuit in the housing, and when the moving part moves, the deflection structure is triggered, which drives the push rod to rotate relative to the housing.

[0008] The prediction component is arranged in the shell and includes a barrier member slidably arranged in the shell. When the current is too large, the barrier member cooperates with the deflection structure to lock the push rod.

[0009] As described above, the intelligent switch cabinet based on maintenance power-off protection: the magnetic structure includes an iron core arranged in the shell, a wire is wound on the iron core, one end of the wire passes through the shell and is connected to the power supply, and the other end is connected to a socket slidingly arranged in the shell, and the socket is electrically connected to the prediction component.

[0010] As described above, in the intelligent switch cabinet based on maintenance power-off protection, the movable part includes an armature, which is slidably connected to a guide rod provided in the housing, and the armature is fixedly connected to the sleeve.

[0011] As described above, in the intelligent switch cabinet based on maintenance power-off protection, the deflection structure includes a toothed plate fixedly connected to the sleeve, and the toothed plate is engaged with a gear coaxially arranged with the rotation axis of the push rod.

[0012] As described above, the intelligent switch cabinet based on maintenance power-off protection: the locking assembly includes a telescopic structure and a locking member, the telescopic structure includes a plug-in cylinder fixedly connected to the armature, a plug-in rod is elastically and slidingly provided in the plug-in cylinder, and the plug-in rod, the plug-in rod, is rotatably installed with a pulley at one end away from the plug-in cylinder.

[0013] As described above, the intelligent switch cabinet based on maintenance power-off protection: the locking member includes a positioning member arranged in the housing, the positioning member is provided with an engaging groove, and the engaging groove cooperates with the pulley to fix the position of the armature.

[0014] As described above, the intelligent switch cabinet based on maintenance power-off protection: the prediction component includes a disassembly abutment and a trigger member, the disassembly abutment includes a disassembly tube, and an elastic pressing member is provided on the disassembly tube. The elastic pressing member cooperates with the installation groove provided on the outer shell, so that the disassembly tube and the outer shell can be detachably connected, and an abutment rod is installed in the disassembly tube.

[0015] As described above, the intelligent switch cabinet based on maintenance power-off protection: the trigger member includes a trigger block slidably arranged in the shell, the trigger block is provided with a longitudinal member, the longitudinal member is provided with a protrusion, and the protrusion is slidably arranged in the shell and connected to the movable plate.

[0016] As described above, the intelligent switch cabinet based on maintenance power-off protection: the barrier member includes a mounting member arranged on the movable plate, a deflection plate is rotatably mounted on one end of the mounting member away from the movable plate, and the deflection plate is connected to the mounting member through a spring.

[0017] A maintenance method for an intelligent switch cabinet based on maintenance power-off protection is also proposed, which adopts the above-mentioned intelligent switch cabinet based on maintenance power-off protection and is characterized by comprising the following steps:

[0018] Step 1: When the current passing through the housing is large, the moving part rises along the length direction of the housing, separating the sleeve cylinder from the disassembly cylinder, and at the same time drives the deflection structure to move, causing the push rod to swing toward the lower end of the housing, disconnecting the circuit in the housing and de-energizing the switch cabinet. At the same time, the locking assembly locks the position of the moving part so that the position of the push rod after the swing remains unchanged;

[0019] Step 2: After the switch cabinet is powered off, push the push rod upwards. Two situations will occur:

[0020] S: The push rod is pushed, and under the action of the deflection structure, the push rod drives the moving part to descend, so that the sleeve cylinder is reconnected with the disassembly cylinder. When the power is turned on, the switch cabinet will resume normal operation;

[0021] S: The push rod cannot be pushed, that is, the fuse in the disassembly tube is blown, and the blocking piece is triggered to block the rising tooth plate, making the push rod unable to be pushed. At this time, replace the disassembly tube. The replaced disassembly tube cooperates with the trigger piece to force the blocking piece to recover. Then the push rod can be pushed and reset normally, and the switch cabinet will resume normal operation.

[0022] Step 3: After the above operations are completed, if the switch cabinet is not restored to normal operation, further maintenance is required to ensure that the switch cabinet can work normally.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] By setting up a power-off mechanism and a prediction component, when the current flowing into the housing is too large, the sleeve fixedly connected to the armature will separate from the prediction component, thereby disconnecting the circuit in the housing and powering off the switch cabinet, preventing excessive current from damaging the internal components of the switch cabinet;

[0025] When the sleeve is separated from the prediction assembly, the deflection structure is triggered, causing the push rod to deflect relative to the housing. At the same time, with the cooperation of the locking assembly, the position of the push rod is stabilized in the downward swing state, which is used to intuitively prompt maintenance personnel that there is a problem inside the housing, without the need for instrument detection, thereby facilitating personnel to perform maintenance inside the housing:

[0026] When the maintenance personnel are performing maintenance, they push the push rod upwards. If the push rod can be reset, the fault in the shell is eliminated; if it cannot be reset, it indicates that the disassembly abutment trigger of the predicted component in the shell is faulty. At this time, by replacing the disassembly tube, the push rod can be pushed back to its original position, thereby eliminating the fault in the shell and bringing convenience to the overall maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of an intelligent switch cabinet based on maintenance power-off protection.

[0028] Figure 2 This is a schematic diagram of the structure inside the shell of an intelligent switch cabinet based on maintenance power-off protection.

[0029] Figure 3 This is a structural diagram of the power-off mechanism in the intelligent switch cabinet based on maintenance power-off protection.

[0030] Figure 4 This is a structural diagram of the locking component in the intelligent switch cabinet based on maintenance power-off protection.

[0031] Figure 5 This is a structural diagram of the deflection structure in the intelligent switch cabinet based on maintenance power-off protection.

[0032] Figure 6 This is a schematic diagram of the structure of the prediction component in the intelligent switch cabinet based on maintenance power-off protection.

[0033] Figure 7 This is a structural diagram of the disassembly of the abutment parts in the intelligent switch cabinet based on maintenance power-off protection.

[0034] Figure 8 This is a schematic diagram of the structure of the partition in the intelligent switch cabinet based on maintenance power-off protection.

[0035] Figure 9 This is a schematic diagram of the structure of the trigger component in the intelligent switch cabinet based on maintenance power-off protection.

[0036] In the figure: 1. housing; 101. T-shaped rod; 102. fixing member; 2. push rod; 201. rotating shaft; 3. pressing member; 4. iron core; 5. wire; 6. armature; 7. disassembly tube; 701. fuse; 8. trigger block; 801. arc surface; 9. moving plate; 901. inclined groove; 902. T-shaped groove; 10. socket cylinder; 11. tooth plate; 12. guide rod; 13. spring; 14. positioning member; 1401. first locking groove; 1402. second locking groove; 1403. first inclined surface; 1404. second inclined surface; 15. plug-in rod; 1501. blocking piece; 16. spring; 17. plug-in cylinder; 18. gear; 19. abutting rod; 20. longitudinal member; 2001. protruding column; 21. deflection plate; 22. mounting member; 2201. abutting surface. DETAILED DESCRIPTION

[0037] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0038] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0039] In addition, numerous specific details are provided in the following specific examples to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, and components well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0040] See also Figures 1 to 9 In an embodiment of the present invention, an intelligent switch cabinet based on maintenance power-off protection includes: a housing 1 installed in the switch cabinet, the housing 1 being connected in series with a power supply and components in the switch cabinet;

[0041] In detail, the above-mentioned shell 1 is arranged in the switch cabinet 1 and is connected in series between the power supply of the switch cabinet and the components. The power supply is connected to the components in the switch cabinet through the power-off mechanism and the prediction component arranged in the shell 1. The power-off mechanism will cut off the power of the switch cabinet when the current input into the switch cabinet 1 is too large, thereby protecting the components in the switch cabinet, preventing the internal components from being damaged, and thus reducing losses.

[0042] A power-off mechanism is provided in the housing 1, and the power-off mechanism includes a magnetic attraction component and a locking component. The magnetic attraction component includes a moving part slidably provided in the housing 1, and the moving part is connected to a push rod 2 rotatably mounted on the housing 1 through a deflection structure. When the current flowing through the housing 1 is too large, the moving part cooperates with the locking component to disconnect the circuit in the housing 1, and when the moving part moves, the deflection structure is triggered, which drives the push rod 2 to rotate relative to the housing 1;

[0043] The magnetic attraction structure includes an iron core 4 disposed in the housing 1, with a wire 5 wound around the iron core 4. One end of the wire 5 passes through the housing 1 and is connected to a power source, and the other end is connected to a sleeve 10 slidably disposed in the housing 1. The sleeve 10 is electrically connected to a prediction component disposed in the housing 1.

[0044] The movable member includes an armature 6, which is slidably connected to a guide rod 12 provided in the housing 1, and the armature 6 is fixedly connected to the sleeve 10;

[0045] For details, please refer to Figure 2 、 Figure 3In the initial state, the armature 6 is away from the iron core 4. When the wire 5 is energized, the iron core 4 will be instantly magnetized. As the current changes, the magnetism of the iron core 4 becomes stronger, thereby attracting the armature 6 to approach the iron core 4 along the axial direction of the guide rod 12. At this time, the sleeve 10 fixedly connected to the armature 6 will be separated from the prediction component to disconnect the circuit in the shell 1, thereby cutting off the power to the switch cabinet and preventing excessive current from damaging the internal components of the switch cabinet. When the sleeve 10 rises with the armature 6, the deflection structure is triggered, causing the push rod 2 to deflect relative to the shell 1, thereby visually reminding personnel that there is an abnormality in the circuit in the shell 1, so that subsequent personnel can perform maintenance in the shell 1.

[0046] For details, please refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 , the deflection structure includes a tooth plate 11 fixedly connected to the sleeve 10, and the tooth plate 11 is engaged with a gear 18 coaxially arranged with the rotating shaft 201 of the push rod 2;

[0047] In the initial state, the push rod 2 is deflected toward the upper side of the housing 1 (eg Figure 1 、 Figure 2 As shown), the circuit connection in the housing 1 is normal. Combined with the above, when the current flowing into the housing 1 is too large, the magnetized iron core 4 will attract the armature 7 to move toward the iron core 4. At this time, the sleeve 10 fixed to the armature 7 will drive the tooth plate 11 to rise along the axial direction of the guide rod 12 following the armature 7. During the rising process, the tooth plate 11 will drive the gear 18 to rotate clockwise with the rotating shaft 201 as the rotation center (combined with Figure 5 ), so that the push rod 2 is swung toward the bottom of the shell 1, and the downward swinging push rod 2 will remind the maintenance personnel in appearance that the shell 1 is abnormal, thereby facilitating the maintenance personnel to troubleshoot the shell 1.

[0048] Furthermore, the locking assembly includes a telescopic structure and a locking member. The telescopic structure includes an inserting cylinder 17 fixedly connected to the armature 6. A plugging rod 15 is elastically slidably provided in the inserting cylinder 17. The plugging rod 15 is rotatably mounted on one end away from the plugging cylinder 17.

[0049] The locking member includes a positioning member 14 disposed in the housing 1 , and a fitting groove is formed on the positioning member 14 , and the fitting groove cooperates with the pulley to fix the position of the armature 6 ;

[0050] For details, please refer to Figure 4, a spring 16 is also slidably provided on the above-mentioned plug-in rod 15, one end of the spring 16 abuts against the disassembly cylinder 17, and the other end abuts against the blocking piece 1501 formed on the plug-in rod 15. In particular, the above-mentioned engaging groove body includes a first locking groove 1401, a first inclined surface 1403, a second locking groove 1402 and a second inclined surface 1404, and the first locking groove 1401 and the first inclined surface 1403 are symmetrically arranged with the second locking groove 1402 and the second inclined surface 1404. In the initial state, the spring 16 is in a compressed state. The compressed spring 16 will push the plug-in rod 15 away from the plug-in cylinder 17, so that the pulley is combined with the first locking groove 1401. When the current passed into the housing 1 is too large, the iron core 4 with a stronger magnetic force will attract the armature 6 along the axial direction of the guide rod 12 When the first locking groove 1402 is combined with the second locking groove 1402, the armature 6 will not slide back to the initial position due to the influence of its own gravity, thereby stabilizing the position of the push rod 2 in the downward swing state, so as to remind the maintenance personnel that there is a problem in the housing 1.

[0051] See also Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 , an intelligent switch cabinet based on maintenance power-off protection, further comprising a prediction component, disposed in the housing 1, comprising a barrier member slidably disposed in the housing 1, wherein when an input current is too large, the barrier member cooperates with the deflection structure to lock the push rod 2;

[0052] The prediction assembly includes a disassembly abutment member and a trigger member. The disassembly abutment member includes a disassembly tube 7. An elastic pressing member 3 is provided on the disassembly tube 7. The elastic pressing member 3 cooperates with the mounting groove provided on the housing 1 to enable the disassembly tube 7 to be detachably connected to the housing 1. An abutment rod 19 is installed in the disassembly tube 7.

[0053] For details, please refer to Figure 6 、 Figure 7The elastic pressing member 3 includes two sets of symmetrically arranged pressing elastic sheets, which are fixedly connected to the disassembly tube 7 and can be engaged in the opening and closing mounting grooves on the shell 1 in a state of being away from each other, so that the disassembly tube 7 can be fixed in the shell 1; and when the disassembly tube 7 needs to be replaced, the two sets of pressing elastic sheets are squeezed inward by hand, and then pulled outward from the shell 1 to separate the disassembly tube 7 from the shell 1;

[0054] In particular, a fuse 701 is installed in the disassembly tube 7, and the fuse 701 is connected to the abutment rod 19 slidably set in the disassembly tube 7. When the current flowing through the wire 5 is too large, the fuse 701 is blown. At this time, the broken fuse 701 cancels the supporting force of the abutment rod 19, and the trigger part will drop under the action of its own gravity, thereby driving the barrier part to move and block the rising tooth plate 11, so that when the push rod 2 is pushed upward subsequently, the gear 18 cannot rotate, thereby reminding the maintenance personnel that the fuse 701 of the disassembly tube 7 in the housing 1 is blown.

[0055] The trigger member includes a trigger block 8 slidably disposed within the housing 1 , the trigger block 8 being provided with a longitudinal member 20 , the longitudinal member 20 being provided with a protruding post 2001 , the protruding post 2001 being connected to a movable plate 9 slidably disposed within the housing 1 , specifically, the protruding post 2001 being slidably disposed within an inclined slot 901 provided on the movable plate 9;

[0056] Preferably, see Figure 6 、 Figure 9 The longitudinal member 20 is slidably connected to a fixing member 102 provided inside the housing 1. Under the constraint of the fixing member 102, the trigger block 8 can only follow the longitudinal member 20 to move up and down along the length direction of the housing 1. A T-slot 902 is provided on the side of the movable plate 9 away from the pressing member 3. A T-bar 101 fixedly connected to the housing 1 is slidably provided in the T-slot 902. Under the cooperation of the T-slot 902 and the T-bar 101, the movable plate 9 can only slide along the width direction of the housing 1.

[0057] In particular, the trigger block 8 is provided in a rectangular structure, with a large arc surface 801 provided on one side facing the push rod 2 and close to the bottom of the housing 1. In the initial state, the contact rod 19 contacts the trigger block 8. Figure 5 、 Figure 6As shown, at this time, the protruding post 2001 is located at the end of the stroke of the inclined slot 901. When the current flowing into the housing 1 is too large, causing the fuse 701 in the disassembly tube 7 to be melted, the supporting force of the abutting rod 19 connected to the fuse 701 on the trigger block 8 is cancelled. Subsequently, the trigger block 8 will move toward the bottom of the housing 1 under the influence of gravity. At this time, the contact and compression generated between the protruding post 2001 fixed on the longitudinal member 20 and the inclined slot 901 will drive the movable plate 9 to move toward the tooth plate 11. After the push rod 2 is deflected to the downward swing state, the barrier member connected to the movable plate 9 is just below the tooth plate 11, so that the maintenance personnel cannot push the push rod 2 upward when troubleshooting the housing 1, thereby notifying the maintenance personnel that the fuse 701 in the housing 1 is melted and needs to be replaced:

[0058] At this time, hold the pressing piece 3 and force the two sets of pressing elastic sheets to approach each other, and then pull the pressing piece 3 out of the shell 1 to separate the disassembly tube 7 with the broken fuse 701 from the shell 1; when using a new disassembly tube 7 for replacement, the disassembly tube 7 pushed into the shell 1 will make the abutment rod 19 contact with the curved surface 801, and as the disassembly tube 7 continues to be pushed in, the extrusion and squeezing generated between the abutment rod 19 and the curved surface 801 will force the trigger block 8 to rise along the length direction of the shell 1, and in the process of the trigger block 8 rising, the cooperation between the protrusion 2001 and the inclined groove 901 will force the movable plate 9 to pull the partition back to the initial position, and then the inspection personnel can push the push rod 2 normally, and then complete the fault troubleshooting in the shell 1. If the switch cabinet still cannot work normally at this time, the maintenance personnel need to further check the circuit in the switch cabinet.

[0059] For further information, see Figure 4 、 Figure 5 、 Figure 8 The barrier member includes a mounting member 22 provided on the movable plate 9, and a deflection plate 21 is rotatably mounted on one end of the mounting member 22 away from the movable plate 9, and the deflection plate 21 is connected to the mounting member 22 via a spring 13;

[0060] For details, please combine Figure 6 、 Figure 8 The mounting member 22 is formed with an abutting surface 2201 on the side facing the trigger block 8. The abutting surface 2201 enables the deflection plate 21 to deflect only in the direction away from the trigger block 8. In combination with the above, when the current flowing through the housing 1 is too large, the power-off mechanism will force the armature 6 to rise, and during the rising process of the armature 6, the toothed plate 11 fixed to the armature 6 will drive the gear 18 to rotate clockwise (in combination with the above). Figure 5), causing the push rod 2 to swing down. During this process, due to the excessive current, the fuse 701 in the disassembly tube 7 will be melted. Subsequently, with the cooperation of the trigger component, the deflection plate 21 will simultaneously move one end distance toward the tooth plate 11, so that part of the deflection plate 21 is blocked above the tooth plate 11. At this time, the rising tooth plate 11 will force the deflection plate 21 to deflect in the direction away from the trigger block 8. After the push rod 2 is stably placed in the swing position, the tooth plate 11 is separated from the deflection plate 21. Subsequently, the deflection plate 21 will be restored to a state parallel to the mounting part 22 under the action of the spring piece 13, and be placed below the tooth plate 11, so that the maintenance personnel cannot push the push rod 2 upward when repairing the shell 1, thereby informing the maintenance personnel that the fuse 701 in the shell 1 is damaged, so that the maintenance personnel can quickly repair it.

[0061] A maintenance method for an intelligent switch cabinet based on maintenance power-off protection is also proposed, which adopts the above-mentioned intelligent switch cabinet based on maintenance power-off protection and is characterized by comprising the following steps:

[0062] Step 1: When the current passing through the housing 1 is large, the moving part rises along the length direction of the housing 1, separating the sleeve tube 10 from the disassembly tube 7. At the same time, the deflection structure is driven to swing the push rod 2 toward the lower end of the housing 1, disconnecting the circuit in the housing 1 and de-energizing the switch cabinet. At the same time, the locking assembly locks the position of the moving part so that the position of the push rod 2 remains unchanged after the swing.

[0063] Step 2: After the switch cabinet is powered off, push the push rod 2 upwards. Two situations will occur:

[0064] S1: The push rod 2 is pushed. Under the action of the deflection structure, the push rod 2 drives the moving part to descend, so that the sleeve cylinder 10 is reconnected with the disassembly cylinder 7. The power is turned on and the switch cabinet resumes normal operation.

[0065] S2: The push rod 2 cannot be pushed, that is, the fuse 701 in the disassembly tube 7 is blown, and the blocking member is triggered to block the rising tooth plate 11, making the push rod 2 unable to be pushed. At this time, the disassembly tube 7 is replaced. The replaced disassembly tube 7 cooperates with the trigger member to force the blocking member to recover. Then the push rod 2 can be pushed and reset normally, and the switch cabinet will resume normal operation.

[0066] Step 3: After the above operations are completed, if the switch cabinet is not restored to normal operation, further maintenance is required to ensure that the switch cabinet can work normally.

[0067] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0068] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An intelligent switch cabinet based on maintenance power-off protection, comprising: A housing (1) installed in a switch cabinet, wherein the housing (1) is connected in series with a power supply and components in the switch cabinet; and the characteristics include: A power-off mechanism is provided in the housing (1), and the power-off mechanism includes a magnetic attraction component and a locking component. The magnetic attraction component includes a moving part slidably provided in the housing (1), and the moving part is connected to a push rod (2) rotatably mounted on the housing (1) through a deflection structure. When the current flowing through the housing (1) is too large, the moving part cooperates with the locking component to disconnect the circuit in the housing (1), and when the moving part moves, the deflection structure is triggered, which drives the push rod (2) to rotate relative to the housing (1); A prediction component is arranged in the housing (1), comprising a barrier member slidably arranged in the housing (1); when an excessively large current is passed through, the barrier member cooperates with the deflection structure to lock the push rod (2); The magnetic attraction component comprises an iron core (4) disposed in the housing (1), a wire (5) wound around the iron core (4), one end of the wire (5) passing through the housing (1) to be connected to a power source, and the other end of the wire (5) being connected to a sleeve (10) slidably disposed in the housing (1), the sleeve (10) being electrically connected to the prediction component; The prediction component includes a disassembly abutment member and a trigger member, the disassembly abutment member includes a disassembly tube (7), an elastic pressing member (3) is provided on the disassembly tube (7), the elastic pressing member (3) cooperates with a mounting groove provided on the housing (1), and can enable the disassembly tube (7) and the housing (1) to be detachably connected, and an abutment rod (19) is installed in the disassembly tube (7); The trigger member comprises a trigger block (8) slidably arranged in the housing (1), the trigger block (8) being provided with a longitudinal member (20), and the longitudinal member (20) being provided with a protruding column (2001); and further comprises a moving plate (9) slidably arranged in the housing (1), the protruding column (2001) being slidably arranged in an inclined groove (901) provided on the moving plate (9); The barrier member comprises a mounting member (22) arranged on the movable plate (9); a deflection plate (21) is rotatably mounted on one end of the mounting member (22) away from the movable plate (9); the deflection plate (21) is connected to the mounting member (22) via a spring sheet (13); a fuse (701) is installed in the disassembly tube (7); the fuse (701) is connected to an abutment rod (19) slidably arranged in the disassembly tube (7); the abutment rod (19) contacts the trigger block (8) to provide a supporting force for the trigger block (8).

2. The intelligent switch cabinet based on maintenance power-off protection according to claim 1 is characterized in that: The movable member comprises an armature (6), the armature (6) being slidably connected to a guide rod (12) arranged in the housing (1), and the armature (6) being fixedly connected to the sleeve (10).

3. The intelligent switch cabinet based on maintenance power-off protection according to claim 1, characterized in that: The deflection structure comprises a toothed plate (11) fixedly connected to the sleeve (10), and the toothed plate (11) is meshed with a gear (18) coaxially arranged with the rotation axis (201) of the push rod (2).

4. The intelligent switch cabinet based on maintenance power-off protection according to claim 2, characterized in that: The locking assembly includes a telescopic structure and a locking member, wherein the telescopic structure includes a plug-in cylinder (17) fixedly connected to the armature (6), a plug-in rod (15) is elastically slidably provided in the plug-in cylinder (17), and a pulley is rotatably installed at one end of the plug-in rod (15) away from the plug-in cylinder (17).

5. The intelligent switch cabinet based on maintenance power-off protection according to claim 4 is characterized in that: The locking member comprises a positioning member (14) arranged in the housing (1), and a fitting groove is provided on the positioning member (14). The fitting groove cooperates with the pulley to fix the position of the armature (6).

6. A maintenance method for an intelligent switch cabinet based on maintenance power-off protection, using the intelligent switch cabinet based on maintenance power-off protection according to claim 1, characterized in that: The steps include: Step 1: When the current passing through the housing (1) is large, the moving part rises along the length direction of the housing (1), so that the sleeve (10) is separated from the disassembly tube (7), and at the same time drives the deflection structure to move, so that the push rod (2) swings toward the lower end of the housing (1), disconnecting the internal circuit of the housing (1), so that the switch cabinet is powered off, and at the same time the locking component locks the position of the moving part so that the position of the push rod (2) remains unchanged after the swing; Step 2: After the switch cabinet is powered off, push the push rod (2) upwards. Two situations will occur: S (1): The push rod (2) is pushed, and the pushed push rod (2) drives the moving part to descend under the action of the deflection structure, so that the sleeve (10) is reconnected with the disassembly tube (7), and the power is turned on, and the switch cabinet will resume normal operation; S (2): The push rod (2) cannot be pushed, that is, the fuse (701) in the disassembly tube (7) is blown, and the blocking member is triggered to block the tooth plate (11) after it rises, so that the push rod (2) cannot be pushed. At this time, the disassembly tube (7) is replaced. The replaced disassembly tube (7) cooperates with the trigger member to force the blocking member to recover. Then the push rod (2) can be pushed and reset normally, and the switch cabinet will resume normal operation. Step 3: After the above operations are completed, if the switch cabinet is not restored to normal operation, further maintenance is required to ensure that the switch cabinet can work normally.

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