Locking method of electric handcart for middle-position switch cabinet and locking and sealing device for operation hole

Abstract

The application discloses a locking method of an electric handcart of a centrally-arranged switch cabinet, an electric / manual switch SK is arranged on a middle door panel, and electric / manual operation function switching of the handcart is realized through the electric / manual switch SK; the electric / manual switch SK is connected with a locking device, and the locking device comprises a miniature circuit breaker power supply circuit, a locking electromagnet and a rotating mechanism; the miniature circuit breaker power supply circuit is connected with the locking electromagnet and an electric operation module of the handcart, and the miniature circuit breaker power supply circuit controls power-on and power-off of the locking electromagnet and the electric operation module of the handcart. The application further discloses an operation hole locking and sealing device of the electric handcart of the centrally-arranged switch cabinet, and the device comprises a shaking-in and shaking-out operation hole sealing plate, a locking electromagnet and the electric / manual switch SK. The application controls the locking electromagnet through the electric / manual switch SK, realizes switching between electric operation and manual operation of the handcart, and plays a dustproof sealing and locking role.

Description

Technical Field

[0001] This invention belongs to the field of operation and maintenance technology of central switchgear, specifically relating to a locking method and a locking and sealing device for the operation port of a central switchgear electric trolley, used for locking in manual / electric operation mode and sealing the operation port for rocking in and out. Background Technology

[0002] In conventional high-voltage medium-voltage switchgear, if the trolley is an electric chassis trolley (i.e., equipped with electric operation function), the manual and electric operation modes of the trolley cannot be effectively interlocked, which can easily lead to misoperation of the trolley's electric and manual modes, posing a hidden danger to the safe operation of the power grid. At the same time, the trolley's cranking in and out operating ports are generally not protected. In situations with poor working conditions, if effective protection is not provided and maintenance is not timely, dust will accumulate at the trolley's cranking in and out operating ports over time, causing the trolley's operating handle to be unable to be smoothly inserted into the operating port or to become stuck after insertion, affecting operation.

[0003] Therefore, it is necessary to design a process to effectively lock the manual / electric operation mode of the electric handcart of the central switch cabinet, and to provide dust protection for the handcart's rocking-in and rocking-out operation holes. Summary of the Invention

[0004] To address the aforementioned technical problems in existing structures, this invention discloses a locking method and an operating hole locking and sealing device for a centrally located switchgear electric trolley. The technical solution adopted is as follows:

[0005] The locking method for the electric trolley of the central switchgear is to install an electric / manual switching switch SK on the central door panel of the central switchgear, and to switch the electric / manual operation function of the trolley through the electric / manual switching switch SK;

[0006] The electric / manual switch SK is connected to a locking device, which includes: a miniature circuit breaker power circuit, a locking electromagnet, and a rotating mechanism. The miniature circuit breaker power circuit connects the locking electromagnet and the electric operating module of the handcart, and controls the energization and de-energization of the locking electromagnet and the electric operating module of the handcart. The rotating mechanism is installed on one side of the handcart's rocking-in / rocking-out operating hole. A sealing plate is provided at one end of the rotating mechanism located on the outer side of the central switch cabinet door panel. The sealing plate blocks or exposes the handcart's rocking-in / rocking-out operating hole by rotating the rotating mechanism. The locking electromagnet has a locking electromagnet moving shaft, and the surface of the rotating mechanism is provided with an annular groove that mates with the locking electromagnet moving shaft.

[0007] When the electric / manual switch SK of the handcart is switched to the manual operation mode of the handcart, the locking electromagnet is energized and activated by the power circuit of the miniature circuit breaker, and the electric operation module of the handcart is de-energized. The locking electromagnet shaft that is inserted into the annular groove of the rotating mechanism is pulled out. At this time, the rotating mechanism can be manually operated to expose the handcart's rocking-in and rocking-out operation hole for manual operation.

[0008] When the electric / manual switch SK of the handcart is switched to the electric operation mode, the locking electromagnet is de-energized and the electric operation module of the handcart is energized by the power circuit of the miniature circuit breaker. The moving shaft of the locking electromagnet extends into the annular groove of the rotating mechanism. At this time, the rotating mechanism is in a locked state and cannot be manually operated. The handcart's rocking-in and rocking-out operation hole cannot be exposed, thus realizing manual operation locking in electric mode.

[0009] A locking and sealing device for the operating hole of a central switchgear electric handcart, employing the aforementioned locking method for central switchgear electric handcarts, includes: a rocking-in / rocking-out operating hole sealing plate, a locking electromagnet, and an electric / manual switching switch SK. The rocking-in / rocking-out operating hole sealing plate is integrally formed with a boss-type cylindrical structure on the outer side adjacent to the outer side of the central switchgear door panel. A first through hole and a first internal threaded hole are symmetrically arranged along the edge of the rocking-in / rocking-out operating hole sealing plate. A second through hole and a third through hole are symmetrically arranged along the outer side of the central switchgear door panel near the rocking-in / rocking-out operating hole, with the second through hole mates with the first through hole and the third through hole mates with the first internal threaded hole. A first boss nut is welded to the second through hole on the inner side of the central switchgear door panel, with the first boss nut aligned with the center of the first through hole. The rotating screw passes through the first through hole and is threadedly connected to the first boss nut. A second boss nut is welded to the third through hole on the inner side of the central switch cabinet door panel. The second boss nut mates with the center of the first internal threaded hole. The fastening screw is screwed into the first internal threaded hole and threadedly connected to the second boss nut. A locking electromagnet is installed on the inner side of the central switch cabinet door panel near the top of the first boss nut. The locking electromagnet has a locking electromagnet moving shaft. An annular groove that mates with the locking electromagnet moving shaft is provided on the outer side of the rotating screw. An anti-disengagement pin is provided at the end of the rotating screw away from the sealing plate of the rocker-in / rocker-out operating hole. The locking electromagnet is connected to the electric / manual switch SK on the switch cabinet panel via electrical wiring. The locking electromagnet is fixedly installed on the inner side of the central switch cabinet door panel by a mounting plate to achieve electrical interlock control.

[0010] The beneficial effects of this invention are:

[0011] This invention controls the locking electromagnet via an electric / manual switching switch SK, enabling switching between electric and manual operation of the handcart and preventing accidental operation. Simultaneously, the sealing plate of the rocking-in / rocking-out operating hole adopts a boss-type structure, effectively sealing the operating hole and providing dustproof sealing, making it particularly suitable for environments with harsh working conditions. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are some specific embodiments of the present invention. For those skilled in the art, other drawings falling within the scope of protection of this application can be obtained based on these drawings without any creative effort.

[0013] Figure 1 This is a schematic diagram of the contacts of the electric / manual switching switch SK according to an embodiment of the present invention;

[0014] Figure 2 This is an electrical control schematic diagram of the interlocking method for the electric handcart of the central switchgear according to an embodiment of the present invention;

[0015] Figure 3 This is a schematic diagram of the sealing state of the rocking-in and rocking-out operation hole according to an embodiment of the present invention;

[0016] Figure 4 This is a schematic diagram showing the exposed state of the rocking-in and rocking-out operation hole according to an embodiment of the present invention;

[0017] Figure 5 This is a side sectional view of the sealing plate of the rocking-in and rocking-out operation hole according to an embodiment of the present invention;

[0018] Figure 6 This is a side sectional view of the locking and sealing device according to an embodiment of the present invention;

[0019] In the diagram, 1-center door panel of the central switch cabinet, 2-seal plate for the rocker-in / rocker-out operating hole, 3-rotating screw, 4-fastening screw, 5-rocker-in / rocker-out operating hole, 6-boss-type cylindrical structure, 7-first through hole, 8-first internal threaded hole, 9-first boss nut, 10-second boss nut, 11-anti-detachment pin, 12-locking electromagnet, 13-locking electromagnet moving shaft, 14-electric / manual switch SK. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] The locking method for the electric trolley of the central switchgear involves installing an electric / manual switching switch SK on the central door panel of the central switchgear. This switch allows for switching between electric and manual operation of the trolley. The electric / manual switching switch SK is connected to a locking device, which includes a miniature circuit breaker power circuit, a locking electromagnet, and a rotating mechanism. The miniature circuit breaker power circuit connects the locking electromagnet and the trolley's electric operation module, controlling the energization and de-energization of both. The rotating mechanism is installed on one side of the trolley's rocking-in / rocking-out operation hole. A sealing plate is located at one end of the rotating mechanism on the outer side of the central door panel. The sealing plate either blocks or exposes the rocking-in / rocking-out operation hole by rotating the mechanism. The locking electromagnet has a moving shaft, and the surface of the rotating mechanism has an annular groove that mates with the moving shaft. When the electric / manual switch SK is switched to the manual operation mode of the handcart, the locking electromagnet is energized by the miniature circuit breaker power circuit, and the electric operation module of the handcart is de-energized. The locking electromagnet's moving shaft, which is inserted into the annular groove of the rotating mechanism, is pulled out. At this time, the rotating mechanism can be manually operated to expose the handcart's rocking-in / rocking-out operation hole for manual operation. When the electric / manual switch SK is switched to the electric operation mode of the handcart, the locking electromagnet is de-energized by the miniature circuit breaker power circuit, and the electric operation module of the handcart is energized. The locking electromagnet's moving shaft is inserted into the annular groove of the rotating mechanism. At this time, the rotating mechanism is in a locked state, and it cannot be manually operated to expose the handcart's rocking-in / rocking-out operation hole, thus realizing manual operation locking in electric mode. The locking method of the electric handcart of the central switchgear of this invention can realize both manual / electric operation of the handcart chassis and prevent accidental manual operation of the handcart chassis in electric mode.

[0022] like Figure 1 The diagram shown is a schematic representation of the contacts of the electric / manual switching switch SK according to an embodiment of the present invention; as shown... Figure 2The diagram shown illustrates the electrical control principle of the electric trolley interlocking method for a centrally located switchgear according to an embodiment of the present invention. When the electric / manual switch SK is switched to manual mode, contact 1-2 is closed and contact 3-4 is open. Contact 1-2 connects the manual operation activation circuit DCT, at which point the interlocking electromagnet is energized and the trolley electric operation module is de-energized. When the electric / manual switch SK is switched to electric mode, contact 1-2 is open and contact 3-4 is closed, at which point the electric activation circuit DD is connected. At this point, the interlocking electromagnet is de-energized and the trolley electric operation module is energized. The control principle of this interlocking method is as follows: a miniature circuit breaker DK controls the power supply connection, and the interlocking circuit is connected and disconnected by switching the electric / manual switch SK. First, the main power supply is switched on. When the main power supply is on, switching the electric / manual switch SK to manual operation activates the manual operation circuit DCT via the miniature circuit breaker control contacts 1-2. This energizes the locking electromagnet, causing its shaft to be pulled out of the annular slot of the rotating mechanism. The rotating mechanism then rotates outward, exposing the handcart's rocking-in / rocking-out operation hole. The centrally located handcart operating handle can then be inserted into the rocking-in / rocking-out operation hole for manual operation. At this time, contacts 3-4 of the electric / manual switch SK are off, and the electric operation module is not energized. Therefore, the electric operation function of the handcart is locked, preventing electric operation during manual operation. Switching the electric / manual switch SK to electric operation activates the electric operation circuit DD via contacts 3-4, allowing for electric operation. At this time, contacts 1-2 of the electric / manual switching switch SK of the handcart are in the open state, the locking electromagnet is de-energized, and the moving shaft of the locking electromagnet is locked into the annular groove of the rotating mechanism to prevent the rotating mechanism from rotating out. At the same time, the sealing plate is locked, so the manual operation function of the handcart is locked, realizing the function that manual operation cannot be performed when the electric operation is performed.

[0023] like Figure 3 The diagram shown illustrates the sealing state of the rocking-in / rocking-out operation hole according to an embodiment of the present invention. To prevent dust accumulation at the rocking-in / rocking-out operation hole 5 of the handcart, under normal operating conditions, the sealing plate 2 of the rocking-in / rocking-out operation hole is movably installed onto the outer side of the middle door panel 1 of the middle switchgear using rotating screws 3 and fastening screws 4. The sealing plate 2 is a circular plate structure with a certain thickness, and its diameter is larger than that of the rocking-in / rocking-out operation hole 5. The sealing plate 2 blocks the rocking-in / rocking-out operation hole 5 to achieve a dustproof effect. Figure 4The diagram shown illustrates the exposed state of the rocking-in / rocking-out operating hole according to an embodiment of the present invention. When it is necessary to insert the operating handle into the rocking-in / rocking-out operating hole 5, after loosening the fastening screw 4, the sealing plate 2 of the rocking-in / rocking-out operating hole is rotated away from the rocking-in / rocking-out operating hole 5 around the rotating screw 3. This structure effectively prevents dust and allows the rocking-in / rocking-out operating hole 5 to be quickly exposed when the operating handle needs to be inserted.

[0024] The sealing plate 2 of the rocking-in / rocking-out operating hole is integrally formed with a boss-type cylindrical structure 6 on the outer side adjacent to the outer side of the central switch cabinet door panel 1. The diameter of the boss-type cylindrical structure 6 is slightly smaller than the inner diameter of the rocking-in / rocking-out operating hole 5. The boss-type cylindrical structure 6 is in close sealing contact with the rocking-in / rocking-out operating hole 5, meeting the protection level requirements, effectively preventing dust, and ensuring the sealing and dustproof performance of the locking and sealing device. Figure 5 The image shown is a side sectional view of the rocking-in / rocking-out operation hole sealing plate 2 according to an embodiment of the present invention. A first through hole 7 and a first internal threaded hole 8 are symmetrically arranged along the edge of the rocking-in / rocking-out operation hole sealing plate 2. The distance between the first through hole 7 and the first internal threaded hole 8 is greater than the diameter of the boss-type cylindrical structure 6.

[0025] like Figure 6The figure shows a side sectional view of the locking and sealing device according to an embodiment of the present invention. The structure of the locking and sealing device is as follows: A second through hole and a third through hole are symmetrically arranged on the outer side of the door panel 1 of the central switchgear, near the edge of the rocking-in / rocking-out operation hole 5. The position of the second through hole mates with the first through hole 7 of the rocking-in / rocking-out operation hole sealing plate 2, and the position of the third through hole mates with the first internal threaded hole 8 of the rocking-in / rocking-out operation hole sealing plate 2. A first boss nut 9 is welded to the position of the second through hole on the inner side of the door panel 1 of the central switchgear. The first boss nut 9 mates with the center position of the first through hole 7 and the second through hole. A rotating screw 3 passes through the first through hole 7 and the second through hole and mates with the first boss nut 9 to achieve a threaded connection. A second boss nut 10 is welded to the position of the third through hole on the inner side of the door panel 1 of the central switchgear. The second boss nut 10 mates with the center position of the first internal threaded hole 8 and the third through hole. A fastening screw 4 is screwed into the first internal threaded hole 8, passes through the third through hole, and mates with the second boss nut 10 to achieve a threaded connection. A locking electromagnet 12 is installed on the inner side of the central switchgear door panel 1, near the top of the first boss nut 9. The locking electromagnet 12 is fixedly installed on the inner side of the central switchgear door panel 1 by a mounting plate. The locking electromagnet 12 has a locking electromagnet rotating shaft 13. When the locking electromagnet 12 is energized, the locking electromagnet rotating shaft 13 automatically retracts; when the locking electromagnet 12 is de-energized, the locking electromagnet rotating shaft 13 automatically extends. An annular groove is provided on the outer surface of the rotating screw 3 to cooperate with the locking electromagnet rotating shaft 13. The annular groove of the rotating screw 3 and the locking electromagnet rotating shaft 13 cooperate to form an interlocking mechanism to prevent accidental operation. When the locking electromagnet shaft 13 is extended, it can be inserted into the annular groove of the rotating screw 3 to restrict its rotation. At this time, the handcart operates in electric mode to prevent manual operation. When the locking electromagnet shaft 13 is retracted, it moves away from the annular groove of the rotating screw 3, allowing it to rotate freely. At this time, the handcart operates in manual mode to prevent electric operation. An anti-disengagement pin 11 is provided at the end of the rotating screw 3 away from the sealing plate 2 of the rocking-in / rocking-out operating hole. The length of the anti-disengagement pin 11 is greater than the inner diameter of the first boss nut 9 to prevent the rotating screw 3 from disengaging during rotation. The locking electromagnet 12 is connected to the electric / manual switch SK14 via a wire. The electric / manual switch SK14 controls the energization and de-energization of the locking electromagnet 12.

[0026] The rotating screw 3 is the center of rotation of the rocking-in / rocking-out operation hole sealing plate 2. The rotating screw 3 passes through the first through hole 7 of the rocking-in / rocking-out operation hole sealing plate 2 and the second through hole of the middle door panel 1 of the central switch cabinet in sequence, and is screwed into the inner diameter threaded hole of the first boss nut 9. An anti-disengagement pin 11 is provided at the end of the screw. The fastening screw 4 is the fixing point between the rocking-in / rocking-out operation hole sealing plate 2 and the middle door panel 1 of the central switch cabinet. The fastening screw 4 is first screwed into the first internal threaded hole 8 of the rocking-in / rocking-out operation hole sealing plate 2, then passes through the third through hole of the middle door panel 1 of the central switch cabinet, and finally is screwed into the inner diameter threaded hole of the second boss nut 10, thereby fixing the rocking-in / rocking-out operation hole sealing plate 2 on the middle door panel 1 of the central switch cabinet. After the rocking-in / rocking-out operation hole sealing plate 2 is fixed, it seals the rocking-in / rocking-out operation hole 5 to achieve the effect of dust prevention. At the same time, when it is necessary to rotate the rocking-in / rocking-out operation hole sealing plate 2 to expose the rocking-in / rocking-out operation hole 5, the rotating screw 3 and the fastening screw 4 are turned outwards to disengage the boss-type cylindrical structure 6 from the rocking-in / rocking-out operation hole 5. The fastening screw 4 is turned outwards so that its end leaves the middle door panel 1 of the central switch cabinet. The fastening screw 4 can also serve as a handle for rotating the rocking-in / rocking-out operation hole sealing plate 2. With the rotating screw 3 as the rotation center, the rocking-in / rocking-out operation hole sealing plate 2 is rotated away from the rocking-in / rocking-out operation hole 5 using the fastening screw 4.

[0027] The electric / manual switching switch SK14 is equipped with a locking device. The locking device uses a miniature circuit breaker DK to control the power supply, enabling both manual and electric operation of the handcart chassis while preventing accidental operation. The locking sealing device works as follows: the locking circuit is connected and disconnected by switching the electric / manual switching switch SK14. First, the miniature circuit breaker DK controls the power supply. When the power is on, switching the electric / manual switching switch SK14 to manual operation activates the manual operation circuit DCT at contacts 1-2. The locking electromagnet 12 is energized, and the locking electromagnet shaft 13, which is inserted into the annular groove of the rotating screw 3, is pulled out. The rotating screw 3 can then rotate outward. With the rotating screw 3 as the center, the fastening screw 4 drives the handcart's rocking-in hole sealing plate 2 to rotate on the central switch cabinet's door panel 1. Consequently, the central handcart operating handle can be manually operated through the rocking-in / rocking-out operating hole 5 on the central switch cabinet's door panel 1. At this time, contacts 3-4 of the electric / manual switch SK14 are in the open state, and the electric operation module of the handcart is not energized. Therefore, the electric operation function of the handcart is locked, preventing electric operation during manual operation. When the electric / manual switch SK14 is switched to electric operation, contacts 3-4 connect the electric activation circuit DD, allowing electric operation. At this time, contacts 1-2 of the electric / manual switch SK14 are in the open state, the locking electromagnet 12 is de-energized, and the locking electromagnet shaft 13 is engaged in the annular groove of the rotating screw 3, preventing the rotating screw 3 from unscrewing. The rocking-in / rocking-out operation hole sealing plate 2 is locked, thus locking the manual operation function of the handcart and preventing manual operation during electric operation.

[0028] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit them. The scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention.

Claims

1. A locking method for an electric handcart in a centrally located switchgear, characterized in that, A boss-type cylindrical structure (6) is integrally formed on the outer side of the sealing plate (2) for the rocking-in and rocking-out operation hole and the outer side of the middle door panel (1) of the central switch cabinet. A first through hole (7) and a first internal thread hole (8) are symmetrically arranged on the edge of the sealing plate (2). A second through hole and a third through hole are symmetrically arranged on the outer side of the middle door panel (1) near the rocking-in and rocking-out operation hole (5). The position of the second through hole matches the position of the first through hole (7), and the position of the third through hole matches the position of the first internal thread hole (8). A first boss nut (9) is welded to the position of the second through hole on the inner side of the middle door panel (1). The first boss nut (9) matches the center position of the first through hole (7). A rotating screw (3) passes through the first through hole (7) and is threaded to the first boss nut (9). A second boss nut (6) is welded to the position of the third through hole on the inner side of the middle door panel (1). 0), the second boss nut (10) is matched with the center position of the first internal thread hole (8), and the fastening screw (4) is screwed into the first internal thread hole (8) and threadedly connected to the second boss nut (10); a locking electromagnet (12) is set on the inner side of the middle door panel (1) of the central switch cabinet near the top of the first boss nut (9). The locking electromagnet (12) has a locking electromagnet moving shaft (13). An annular groove matching the locking electromagnet moving shaft (13) is set on the outer side of the rotating screw (3). An anti-detachment pin buckle (11) is set at the end of the rotating screw (3) away from the sealing plate (2) of the rocking in and rocking out operation hole. The rocking in and rocking out operation hole (5) is blocked or exposed by the rotation of the rotating screw (3); the locking electromagnet (12) is connected to the electric / manual switching switch SK (14) through the power circuit of the miniature circuit breaker. The locking electromagnet (12) is fixedly installed on the inner side of the middle door panel (1) of the central switch cabinet by the mounting plate; The electric / manual operation function of the handcart is switched by the electric / manual switch SK (14). When the electric / manual switch SK (14) is switched to the manual operation mode, contacts ①-② are connected and contacts ③-④ are disconnected. Contacts ①-② are connected to the manual operation activation circuit DCT. At this time, the locking electromagnet (12) is energized and the electric operation module of the handcart is de-energized. The locking electromagnet shaft (13) of the locking electromagnet (12) is pulled out from the annular groove. At this time, the manual operation rotates the screw (3) to expose the rocking-in and rocking-out operation hole (5). Manual operation is performed; when the electric / manual switching switch SK (14) of the handcart is switched to the electric operation mode of the handcart, the contacts ①-② are disconnected and the contacts ③-④ are connected. The electric start circuit DD is connected by the contacts ③-④. At this time, the locking electromagnet (12) is de-energized and the electric operation module of the handcart is energized. The locking electromagnet shaft (13) of the locking electromagnet (12) extends into the annular groove. At this time, the rotating screw (3) is in the locked state and cannot be manually operated. The rotating screw (3) cannot expose the rocking-in and rocking-out operation hole (5), thus realizing the manual operation locking in the electric mode.

2. The locking method for the electric handcart of the centrally located switchgear according to claim 1, characterized in that, The sealing plate (2) of the rocking in and rocking out operation hole is a circular plate structure, and the diameter of the sealing plate (2) of the rocking in and rocking out operation hole is larger than the diameter of the rocking in and rocking out operation hole (5).

3. The locking method for the electric handcart of the centrally located switchgear according to claim 2, characterized in that, The diameter of the boss-type cylindrical structure (6) is smaller than the inner diameter of the rocking in and rocking out operation hole (5), and the boss-type cylindrical structure (6) is in close and sealed contact with the rocking in and rocking out operation hole (5).

4. The locking method for the electric handcart of the centrally located switchgear according to claim 1, characterized in that, With the rotating screw (3) as the rotation center, the fastening screw (4) serves as the handle for rotating the rocking in and out operation hole sealing plate (2).

5. The locking method for the electric handcart of the centrally located switchgear according to claim 1, characterized in that, The annular groove of the rotating screw (3) cooperates with the moving shaft (13) of the locking electromagnet to form an interlocking mechanism.

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