Interlocking mechanism in switch cabinet

Abstract

The invention discloses an internal interlocking mechanism of a switch cabinet, which belongs to the technical field of interlocking switches and comprises an electromagnetic multi-lock-cylinder interlocking assembly and an integrated lock box. The electromagnetic type multi-lock-cylinder interlocking assembly comprises a multi-lock-cylinder integrated plate, at least two electromagnetic type self-locking lock cylinder mechanisms which are arranged side by side up and down are detachably and fixedly installed on the multi-lock-cylinder integrated plate, and each electromagnetic type self-locking lock cylinder mechanism is electrically connected to a circuit breaker of a cabinet door of the switch cabinet in a one-to-one mode. Each circuit breaker is controlled to be opened or closed through a switch button installed on a cabinet door of the switch cabinet. The electromagnetic self-locking lock cylinder mechanism is connected with all the circuit breakers of the switch cabinet at the same time, only when the circuit breakers are in a closed condition, the electromagnetic self-locking lock cylinder mechanism can be unlocked, the cabinet door of the switch cabinet can be opened, the safety when the cabinet door of the switch cabinet is opened is effectively guaranteed, and the safety of the switch cabinet is improved. The electromagnetic self-locking lock cylinder mechanism can be matched with any number of circuit breakers for use, and has better application flexibility.

Description

Technical Field

[0001] The invention relates to the technical field of interlocking switches, in particular to an internal interlocking mechanism of a switch cabinet. Background Art

[0002] Switchgear is an electrical device used to control, protect and distribute electrical energy in power systems. They usually contain circuit breakers, disconnectors, contactors, relays, measuring instruments and other control and protection components. The interlock mechanism is a safety device used in switchgear to ensure that the operating sequence and conditions in high-voltage switchgear meet safety requirements, thereby preventing misoperation or accidents.

[0003] In the existing patent literature, there is a patent with publication number CN 219034344 U and the name of "A switch cabinet interlocking mechanism". This patent mainly realizes the interlocking function of the circuit breaker and the locking module through a toggle component, wherein the toggle component cannot jointly link multiple circuit breakers, and multiple circuit breakers are usually installed in a switch cabinet. At this time, all circuit breakers cannot be linked at the same time through a toggle component, and its application flexibility is not high. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an internal interlocking mechanism of a switch cabinet, which connects the electromagnetic self-locking lock core mechanism to all circuit breakers of the switch cabinet at the same time. Only when the circuit breaker is in the closed condition, the electromagnetic self-locking lock core mechanism will be unlocked and the switch cabinet door can be opened, which effectively ensures the safety when opening the switch cabinet door. The electromagnetic self-locking lock core mechanism can be used in combination with any number of circuit breakers, and has better application flexibility.

[0005] To solve the above technical problems, the technical solution of the present invention is achieved as follows:

[0006] A switch cabinet internal interlocking mechanism comprises an electromagnetic multi-lock cylinder interlocking assembly and an integrated lock box used in conjunction with the electromagnetic multi-lock cylinder interlocking assembly; the electromagnetic multi-lock cylinder interlocking assembly is fixedly installed on the inner side surface of the switch cabinet door, and the integrated lock box is fixedly installed on the inner edge of the switch cabinet body, and the electromagnetic multi-lock cylinder interlocking assembly and the integrated lock box cooperate with each other to realize the opening or closing of the switch cabinet door; the electromagnetic multi-lock cylinder interlocking assembly comprises a multi-lock cylinder integrated board, and the multi-lock cylinder integrated board is detachably fixedly installed with at least two electromagnetic self-locking lock cylinder mechanisms arranged in parallel up and down, and the disassembly method is bolt and nut matching installation; each electromagnetic self-locking lock cylinder mechanism is electrically connected to the circuit breaker of the switch cabinet door one by one, and each circuit breaker is controlled to be opened or closed by a switch button installed on the switch cabinet door.

[0007] By adopting the above scheme, the internal interlocking mechanism of the switch cabinet connects the electromagnetic self-locking lock core mechanism to all the circuit breakers of the switch cabinet at the same time. Only when the circuit breaker is in the closed condition, the electromagnetic self-locking lock core mechanism will be unlocked and the switch cabinet door can be opened, which effectively ensures the safety when opening the switch cabinet door. The electromagnetic self-locking lock core mechanism can be used with any number of circuit breakers, and it has better application flexibility.

[0008] As a preferred implementation scheme for the internal interlocking mechanism of a switch cabinet, the electromagnetic self-locking lock core mechanism includes an L-shaped lock support on which a lock core is installed; one end of the lock core is fixedly connected to an I-shaped lock pusher, and both ends of the I-shaped lock pusher are slidably connected to a guide rod fixed on the L-shaped lock support, and the guide rod is sleeved with a spring for pushing the lock core to slide; the side of the integrated lock box is provided with lock holes corresponding to the position and number of the lock core, and the lock core can be assembled in the lock holes.

[0009] By adopting the above scheme, in order to achieve the locking or unlocking of the switch cabinet, when the lock core is inserted into the lock hole, the switch cabinet can be locked; when the lock core is extended out of the lock hole, the switch cabinet can be unlocked.

[0010] As a preferred implementation scheme of the internal interlocking mechanism of a switch cabinet, two brackets are fixed on the L-shaped lock support, an iron core is fixedly connected between the two brackets, a coil connected to the circuit breaker is wound on the iron core, and the iron core and the coil together constitute an electromagnet; a permanent magnet is clamped on the side of the I-shaped lock that is pushed away from the lock core, and the permanent magnet and the iron core are located on the same straight line.

[0011] The above scheme is adopted to realize electromagnetic controlled locking or unlocking; when the coil contains current flowing through the circuit breaker, the electromagnet has magnetism, and the magnetism of the electromagnet and the magnetism of the permanent magnet repel each other. Under the action of magnetic force, the iron core continuously compresses the spring and slides toward the location of the integrated lock box. At this time, the switch cabinet door is in a locked state; when there is no current flowing through the circuit breaker in the coil, the electromagnet loses its magnetism, and the elastic action of the spring pushes the iron core to slide toward the location of the electromagnet. At this time, the switch cabinet door is in an unlocked state.

[0012] As a preferred implementation of the internal interlocking mechanism of a switch cabinet, the side of the I-shaped lock that pushes away from the permanent magnet is also fixedly connected to abutment ribs distributed on both sides of the iron core.

[0013] By adopting the above solution, in order to prevent the spring from being over-compressed, when the lock core is pushed by magnetic force, an L-shaped lock support with abutting ribs is provided, which can effectively prevent the spring from being over-compressed, thereby better protecting the spring.

[0014] As a preferred implementation of the internal interlocking mechanism of a switch cabinet, a limit block is also fixed to the bottom of the L-shaped lock tray, and a limit groove cooperating with the limit block is provided on the surface of the multi-lock cylinder integrated board.

[0015] By adopting the above scheme, in order to facilitate the installation of the electromagnetic self-locking lock core mechanism on the multi-lock core integrated board, the installation position of the electromagnetic self-locking lock core mechanism can be quickly located according to the limiting cooperation between the limiting block and the limiting groove, thereby facilitating the rapid installation of the electromagnetic self-locking lock core mechanism.

[0016] As a preferred implementation scheme for the internal interlocking mechanism of a switch cabinet, an indicator shielding plate located outside the switch cabinet door is fixedly connected to the side wall of the iron core by connecting ribs, and the connecting ribs sequentially pass through the L-shaped lock support, the multi-lock core integrated board and the switch cabinet door; an indicator slot 1 and an indicator slot 2 located in the same horizontal plane are provided on the outer side of the switch cabinet door, and the indicator slot 1 and the indicator slot 2 are distributed at the location of the lock core; the indicator slot 1 and the indicator slot 2 are respectively printed with the words "ON" indicating opening and the words "OFF" indicating closing, and the indicator shielding plate can block the indicator slot 1 or the indicator slot 2 separately.

[0017] The above scheme is adopted to facilitate the staff to understand the status of the electromagnetic self-locking lock core mechanism at this time; when the switch cabinet door is in the locked state, all the "ON" words in the indicator slot one are displayed, and all the "OFF" words are blocked by the indicator shielding plate; when the switch cabinet door is in the unlocked state, all the "OFF" words in the indicator slot two are displayed, and all the "ON" words are blocked by the indicator shielding plate.

[0018] After adopting the above technical solution, the beneficial effects of the present invention are:

[0019] 1. The internal interlocking mechanism of the switch cabinet connects the electromagnetic self-locking lock core mechanism with all the circuit breakers of the switch cabinet at the same time. Only when the circuit breaker is in the closed condition, the electromagnetic self-locking lock core mechanism will be unlocked and the switch cabinet door can be opened, which effectively ensures the safety when opening the switch cabinet door. The electromagnetic self-locking lock core mechanism can be used with any number of circuit breakers, which has better application flexibility;

[0020] 2. In order to lock or unlock the switch cabinet, when the lock core is inserted into the lock hole, the switch cabinet can be locked; when the lock core is extended out of the lock hole, the switch cabinet can be unlocked;

[0021] 3. In order to realize electromagnetic control locking or unlocking; when the coil contains current flowing through the circuit breaker, the electromagnet has magnetism, and the magnetism of the electromagnet and the magnetism of the permanent magnet repel each other. Under the action of magnetic force, the iron core continuously compresses the spring and slides toward the location of the integrated lock box. At this time, the switch cabinet door is in a locked state; when there is no current flowing through the circuit breaker in the coil, the electromagnet loses its magnetism, and the elastic action of the spring pushes the iron core to slide toward the location of the electromagnet. At this time, the switch cabinet door is in an unlocked state;

[0022] 4. In order to prevent the spring from being over-compressed, when the lock core is pushed by magnetic force, an L-shaped lock support with abutting ribs is provided to effectively prevent the spring from being over-compressed, thereby better protecting the spring;

[0023] 5. In order to facilitate the installation of the electromagnetic self-locking lock core mechanism on the multi-lock core integrated board, the installation position of the electromagnetic self-locking lock core mechanism can be quickly located according to the limit matching of the limit block and the limit groove, thereby facilitating the rapid installation of the electromagnetic self-locking lock core mechanism;

[0024] 6. In order to facilitate the staff to understand the status of the electromagnetic self-locking lock core mechanism at this time; when the switch cabinet door is in the locked state, all the "ON" words in the indicator slot 1 are displayed, and all the "OFF" words are blocked by the indicator shielding plate; when the switch cabinet door is in the unlocked state, all the "OFF" words in the indicator slot 2 are displayed, and all the "ON" words are blocked by the indicator shielding plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is a three-dimensional structural diagram of the switch cabinet door of the present invention when it is in an unlocked state;

[0027] Figure 2 for Figure 1 The three-dimensional structure diagram after the switch cabinet door is opened;

[0028] Figure 3 To hide Figure 1 The three-dimensional structure diagram of the switch cabinet when viewed from the inside to the outside;

[0029] Figure 4 The three-dimensional structure of the electromagnetic multi-cylinder interlocking assembly and the integrated lock box in the unlocked state Figure 1 ;

[0030] Figure 5 The three-dimensional structure of the electromagnetic multi-cylinder interlocking assembly and the integrated lock box in the unlocked state Figure 2 ;

[0031] Figure 6 for Figure 4 The three-dimensional structure diagram of the Zhongduo lock cylinder integrated board;

[0032] Figure 7 for Figure 4 The three-dimensional structure of the electromagnetic self-locking lock cylinder mechanism Figure 1 ;

[0033] Figure 8 for Figure 4 The three-dimensional structure of the electromagnetic self-locking lock cylinder mechanism Figure 2 ;

[0034] Fig. 9 for Figure 4 A three-dimensional structural diagram of the integrated lock box;

[0035] Fig.10 for Figure 1 A partial enlarged view of the middle A;

[0036] Fig.11 It is a three-dimensional structural diagram of the switch cabinet door in the present invention when it is in a locked state;

[0037] Fig.12 It is a three-dimensional structure when the electromagnetic multi-cylinder interlocking component and the integrated lock box are in a locked state. Figure 1 ;

[0038] Fig.13 It is a three-dimensional structure when the electromagnetic multi-cylinder interlocking component and the integrated lock box are in a locked state. Figure 2 ;

[0039] Fig.14 for Fig.12 The three-dimensional structure of the electromagnetic self-locking lock cylinder mechanism Figure 1 ;

[0040] Fig.15 for Fig.12 The three-dimensional structure of the electromagnetic self-locking lock cylinder mechanism Figure 2 ;

[0041] Fig.16 for Fig.11 A partial enlarged view of point B in the middle.

[0042] Markings in the figure: 1-electromagnetic multi-lock cylinder interlocking assembly; 2-integrated lock box; 201-lock hole; 3-switch cabinet door; 4-switch cabinet body; 5-multi-lock cylinder integrated board; 6-electromagnetic self-locking lock cylinder mechanism; 601-L-shaped lock support; 602-lock cylinder; 603-I-shaped lock push; 604-guide rod; 605-spring; 606-bracket; 607-iron core; 608-coil; 609-permanent magnet; 610-abutment rib; 611-connecting rib; 612-indicator shielding plate; 613-limiting block; 614-limiting slot; 7-circuit breaker; 8-switch button; 9-indicator slot one; 10-indicator slot two. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] like Figures 1 to 5 , Figures 11 to 13 As shown, an internal interlocking mechanism of a switch cabinet is used in the switch cabinet as a safety device, which includes an electromagnetic multi-lock cylinder interlocking assembly 1 and an integrated lock box 2 used in conjunction with the electromagnetic multi-lock cylinder interlocking assembly 1; the electromagnetic multi-lock cylinder interlocking assembly 1 is fixedly installed on the inner side surface of the switch cabinet door 3, and the integrated lock box 2 is fixedly installed on the inner edge of the switch cabinet body 4, and the electromagnetic multi-lock cylinder interlocking assembly 1 and the integrated lock box 2 cooperate with each other to realize the opening or closing of the switch cabinet door 3; the electromagnetic multi-lock cylinder interlocking assembly 1 includes a multi-lock cylinder integrated board 5, and the multi-lock cylinder integrated board 5 is detachably fixedly installed with at least two electromagnetic self-locking lock cylinder mechanisms 6 arranged in parallel up and down, and the disassembly method is bolt and nut matching installation; each electromagnetic self-locking lock cylinder mechanism 6 is electrically connected to the circuit breaker 7 of the switch cabinet door 3 one by one, and each circuit breaker 7 is controlled to be opened or closed by a switch button 8 installed on the switch cabinet door 3.

[0045] The internal interlocking mechanism of the switch cabinet connects the electromagnetic self-locking lock core mechanism 6 to all the circuit breakers 7 of the switch cabinet at the same time. Only when the circuit breaker 7 is in the closed condition, the electromagnetic self-locking lock core mechanism 6 will be unlocked and the switch cabinet door 3 can be opened, which effectively ensures the safety when opening the switch cabinet door 3. The electromagnetic self-locking lock core mechanism 6 can be used in combination with any number of circuit breakers 7, and it has better application flexibility.

[0046] like Figures 6 to 9 As shown, the electromagnetic self-locking lock core mechanism 6 includes an L-shaped lock support 601, on which a lock core 602 is installed; one end of the lock core 602 is fixedly connected to an I-shaped lock push 603, and both ends of the I-shaped lock push 603 are slidably connected to a guide rod 604 fixed on the L-shaped lock support 601, and a spring 605 for pushing the lock core 602 to slide is mounted on the guide rod 604; the side of the integrated lock box 2 is provided with a lock hole 201 corresponding to the position and number of the lock core 602, and the lock core 602 can be assembled in the lock hole 201. In order to achieve the locking or unlocking of the switch cabinet, when the lock core 602 is inserted into the lock hole 201, the switch cabinet can be locked at this time; when the lock core 602 is extended out of the lock hole 201, the switch cabinet can be unlocked at this time.

[0047] like Figures 4 to 8 , Figure 14 to Figure 15As shown, two brackets 606 are fixed on the L-shaped lock support 601, and an iron core 607 is fixedly connected between the two brackets 606. A coil 608 connected to the circuit breaker 7 is wound on the iron core 607, and the iron core 607 and the coil 608 together constitute an electromagnet; a permanent magnet 609 is clamped on the side of the I-shaped lock push 603 facing away from the lock core 602, and the permanent magnet 609 and the iron core 607 are located on the same straight line. In order to realize electromagnetic controlled locking or unlocking; when the coil 608 contains current flowing through the circuit breaker 7, the electromagnet has magnetism, and the magnetism of the electromagnet repels each other with the magnetism of the permanent magnet 609, and the iron core 607 continuously compresses the spring 605 under the action of magnetic force and slides toward the location of the integrated lock box 2, and the switch cabinet door 3 is in a locked state; when there is no current flowing through the circuit breaker 7 in the coil 608, the electromagnet loses its magnetism, and the elastic action of the spring 605 pushes the iron core 607 to slide toward the location of the electromagnet, and the switch cabinet door 3 is in an unlocked state.

[0048] like Figure 7 As shown, the side of the I-shaped lock push 603 facing away from the permanent magnet 609 is also fixedly connected to the abutment ribs 610 distributed on both sides of the iron core 607. In order to prevent the spring 605 from being over-compressed, when the lock core 602 is pushed by the magnetic force, the abutment ribs 610 and the L-shaped lock support 601 are provided, which can effectively prevent the spring 605 from being over-compressed, thereby better protecting the spring 605.

[0049] like Figure 6 , Figure 8 As shown, a limit block 613 is also fixed to the bottom of the L-shaped lock support 601, and a limit groove 614 is provided on the surface of the multi-lock core integrated board 5 to cooperate with the limit block 613. In order to facilitate the installation of the electromagnetic self-locking lock core mechanism 6 on the multi-lock core integrated board 5, the installation position of the electromagnetic self-locking lock core mechanism 6 can be quickly located according to the limit cooperation between the limit block 613 and the limit groove 614, thereby facilitating the rapid installation of the electromagnetic self-locking lock core mechanism 6.

[0050] like Fig.10 , Fig.16As shown, an indicator shielding plate 612 located outside the switch cabinet door 3 is fixedly connected to the side wall of the iron core 607 through a connecting rib 611, and the connecting rib 611 passes through the L-shaped lock support 601, the multi-lock core integrated board 5 and the switch cabinet door 3 in sequence; an indicator slot 1 9 and an indicator slot 2 10 located in the same horizontal plane are opened on the outer side of the switch cabinet door 3, and the indicator slot 1 9 and the indicator slot 2 10 are distributed at the location of the lock core 602; the indicator slot 1 9 and the indicator slot 2 10 are respectively printed with the words "ON" indicating opening and the words "OFF" indicating closing, and the indicator shielding plate 612 can block the indicator slot 1 9 or the indicator slot 2 10 separately. In order to facilitate the staff to understand the status of the electromagnetic self-locking lock core mechanism 6 at this time; when the switch cabinet door 3 is in the locked state, the "ON" word in all indicator slots 9 is displayed, and all "OFF" words are blocked by the indicator shielding plate 612; when the switch cabinet door 3 is in the unlocked state, the "OFF" word in all indicator slots 2 10 is displayed, and all "ON" words are blocked by the indicator shielding plate 612.

[0051] Working principle of the present invention:

[0052] When the switch cabinet is in normal use, the circuit breaker 7 is in the closed state. At this time, there is current in the circuit breaker 7, and the current will flow into the coil 608 of the electromagnetic self-locking lock core mechanism 6. At this time, the electromagnet has magnetism, and the magnetism of the electromagnet and the magnetism of the permanent magnet 609 repel each other. Under the action of the magnetic force, the iron core 607 continuously compresses the spring 605 and slides toward the location of the integrated lock box 2. At this time, the switch cabinet door 3 is in the locked state.

[0053] Since there is high voltage current in the switch cabinet, it is dangerous. Therefore, when inspecting, it is necessary to turn off the circuit breaker 7 by the switch button 8 first, so that there will be no current in the coil 608 of the electromagnetic self-locking lock core mechanism 6. When there is no current flowing through the circuit breaker 7 in the coil 608, the electromagnet loses its magnetism, and the elastic action of the spring 605 pushes the iron core 607 to slide toward the location of the electromagnet, and the switch cabinet door 3 is in an unlocked state.

[0054] In order to facilitate the staff to understand the status of the electromagnetic self-locking lock core mechanism 6 at this time; when the word "ON" in all indicator slots 1 9 is displayed, the switch cabinet door 3 is in a locked state, so the maintenance personnel can open the switch cabinet door 3; when the word "OFF" in all indicator slots 2 10 is displayed, the switch cabinet door 3 is in an unlocked state, so the maintenance personnel cannot open the switch cabinet door 3.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A switch cabinet internal interlocking mechanism, comprising an electromagnetic multi-lock cylinder interlocking assembly (1) and an integrated lock box (2) used in conjunction with the electromagnetic multi-lock cylinder interlocking assembly (1); the electromagnetic multi-lock cylinder interlocking assembly (1) is fixedly mounted on the inner side of a switch cabinet door (3), the integrated lock box (2) is fixedly mounted on the inner edge of a switch cabinet body (4), and the electromagnetic multi-lock cylinder interlocking assembly (1) and the integrated lock box (2) cooperate with each other to realize the opening or closing of the switch cabinet door (3); Features: The electromagnetic multi-lock cylinder interlocking assembly (1) comprises a multi-lock cylinder integrated board (5), and the multi-lock cylinder integrated board (5) is detachably fixedly installed with at least two electromagnetic self-locking lock cylinder mechanisms (6) arranged in parallel up and down, and each of the electromagnetic self-locking lock cylinder mechanisms (6) is electrically connected to a circuit breaker (7) of a switch cabinet door (3), and each of the circuit breakers (7) is controlled to be opened or closed by a switch button (8) installed on the switch cabinet door (3).

2. The internal interlocking mechanism of the switch cabinet according to claim 1 is characterized in that: The electromagnetic self-locking lock core mechanism (6) comprises an L-shaped lock support (601), on which a lock core (602) is mounted; one end of the lock core (602) is fixedly connected to an I-shaped lock pusher (603), and both ends of the I-shaped lock pusher (603) are slidably connected to a guide rod (604) fixed to the L-shaped lock support (601); and a spring (605) for pushing the lock core (602) to slide is mounted on the guide rod (604).

3. The internal interlocking mechanism of the switch cabinet according to claim 2 is characterized in that: Two brackets (606) are fixed on the L-shaped lock support (601), an iron core (607) is fixedly connected between the two brackets (606), a coil (608) connected to the circuit breaker (7) is wound on the iron core (607), and the iron core (607) and the coil (608) together constitute an electromagnet; a permanent magnet (609) is clamped on the side of the I-shaped lock push (603) facing away from the lock core (602), and the permanent magnet (609) and the iron core (607) are located on the same straight line.

4. The internal interlocking mechanism of the switch cabinet according to claim 3 is characterized in that: When the coil (608) contains current flowing through the circuit breaker (7), the electromagnet has magnetism, and the magnetism of the electromagnet and the magnetism of the permanent magnet (609) repel each other. Under the action of the magnetic force, the iron core (607) continuously compresses the spring (605) and slides toward the location of the integrated lock box (2). At this time, the switch cabinet door (3) is in a locked state; When there is no current flowing through the circuit breaker (7) in the coil (608), the electromagnet loses its magnetism, and the iron core (607) is pushed to slide toward the location of the electromagnet under the elastic action of the spring (605), and the switch cabinet door (3) is now in an unlocked state.

5. The internal interlocking mechanism of the switch cabinet according to claim 4 is characterized in that: The side of the I-shaped lock push (603) facing away from the permanent magnet (609) is also fixedly connected to abutment ribs (610) distributed on both sides of the iron core (607).

6. The internal interlocking mechanism of the switch cabinet according to claim 5 is characterized in that: An indication shielding plate (612) located outside the switch cabinet door (3) is fixedly connected to the side wall of the iron core (607) via a connecting rib (611), and the connecting rib (611) sequentially passes through the L-shaped lock support (601), the multi-lock core integrated board (5) and the switch cabinet door (3).

7. The internal interlocking mechanism of the switch cabinet according to claim 6 is characterized in that: A limiting block (613) is also fixed to the bottom of the L-shaped lock support (601), and a limiting groove (614) that cooperates with the limiting block (613) is provided on the surface of the multi-lock core integrated plate (5).

8. The internal interlocking mechanism of the switch cabinet according to claim 7 is characterized in that: The outer side of the switch cabinet door (3) is provided with an indication slot 1 (9) and an indication slot 2 (10) located in the same horizontal plane, and the indication slot 1 (9) and the indication slot 2 (10) are distributed at the location of the lock core (602); the indication slot 1 (9) and the indication slot 2 (10) are respectively printed with the word "ON" indicating opening and the word "OFF" indicating closing, and the indication shielding plate (612) can shield the indication slot 1 (9) or the indication slot 2 (10) separately.

9. The internal interlocking mechanism of the switch cabinet according to claim 8 is characterized in that: When the switch cabinet door (3) is in a locked state, the "ON" characters in all indicator slots 1 (9) are displayed, and all "OFF" characters are blocked by the indicator shielding plate (612); when the switch cabinet door (3) is in an unlocked state, the "OFF" characters in all indicator slots 2 (10) are displayed, and all "ON" characters are blocked by the indicator shielding plate (612).

10. The internal interlocking mechanism of the switch cabinet according to any one of claims 2 to 9, characterized in that: The side surface of the integrated lock box (2) is provided with lock holes (201) corresponding to the positions and numbers of the lock cores (602), and the lock cores (602) can be assembled in the lock holes (201).

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