CN212435186U - Interlocking mechanism for switching device and switching device with interlocking mechanism - Google Patents

Abstract

The utility model relates to a switching device that is used for switching device's interlocking device and has it, interlocking device includes: and the support is connected to the inner side of the cabinet body and is positioned between the secondary socket and the cabinet door in the horizontal direction. An interlocking plate movably connected at its middle to the support and having first and second ends located on either side of the support in a horizontal direction, the first end of the interlocking plate being adjacent the cabinet door and the second end thereof being adjacent the secondary receptacle, the interlocking plate being configured such that its bottom end is urged by a hand truck moving into the cabinet to move it from a resting orientation to a first orientation in which the first end of the interlocking plate abuts the cabinet door and does not allow the cabinet door to close, and its second end is urged by a secondary plug moving relative to the secondary receptacle to connect to the secondary receptacle to move it from the first orientation to a second orientation in which the first end of the interlocking plate is spaced from the cabinet door to allow the cabinet door to close.

Description

Interlocking mechanism for switching device and switching device with interlocking mechanism

Technical Field

The utility model relates to an electrical equipment technical field especially relates to a switching device who is used for switching device's interlocking device and has it.

Background

Switching devices, such as handcart-type switching devices, are widely used due to the advantages of easy maintenance and reliable power supply, and generally include a stationary cabinet and a handcart movable relative to the cabinet. The secondary element in the handcart is electrically connected with the electrical element in the cabinet body to conduct the secondary control loop, and the secondary control loop is usually realized by electrically connecting a secondary plug, such as an aviation plug, on the handcart with a secondary socket, such as an aviation socket, on the cabinet body when the handcart moves to be in place relative to the cabinet body, so that a relay protection function is provided and the safe operation of the switch device is ensured. Therefore, the switch device needs to be provided with a corresponding anti-misoperation mechanism to prevent the aviation plug from being unplugged or unplugged from the aviation socket by mistake to enter a working position. However, the prior art anti-misoperation mechanisms, such as the rocker-type anti-misoperation mechanisms, generally only provide a function of locking the connected aviation plug and aviation socket in the working position, and obviously fail when an operator may inadvertently disconnect the aviation plug and the aviation plug, so that the switching device runs at risk.

There is a need in the art for a highly reliable interlock mechanism.

SUMMERY OF THE UTILITY MODEL

The present invention aims to provide an interlocking mechanism for a switching device that can solve at least the above-mentioned partial problems.

The utility model discloses still aim at providing an use above-mentioned modified interlocking device's switching device.

According to an aspect of the utility model, a interlocking device for switching device is provided, this switching device includes the cabinet body, can follow the horizontal direction shift out or the handcart of immigration this cabinet body and can remove in order to open or close the cabinet door of this cabinet body for this cabinet body, this cabinet internal side is equipped with the secondary socket, this handcart outside is equipped with can dismantle the secondary plug that is connected to this secondary socket, interlocking device includes: a support connected to an inside of the cabinet body and located between the secondary socket and the cabinet door in a horizontal direction; an interlocking plate movably connected at its middle to the support and having first and second ends horizontally on either side of the support, the interlocking plate having a first end adjacent the cabinet door and a second end adjacent the secondary receptacle, the interlocking plate being configured such that its bottom end is urged by the hand truck moving into the cabinet to move it from a resting orientation to a first orientation in which the first end of the interlocking plate abuts the cabinet door and does not allow the cabinet door to close, and its second end is urged by the secondary plug moving relative to the secondary receptacle to connect to the secondary receptacle to move from the first orientation to a second orientation in which the first end of the interlocking plate is spaced from the cabinet door to allow the cabinet door to close.

Compared with the prior art, the utility model provides an interlocking device only needs to use two components, and cooperation between support and the interlocking plate makes secondary plug and secondary socket among the switching device can't close the cabinet door under the condition of not connecting promptly to operating personnel has been reminded directly perceivedly, has avoided operating personnel to further continue to impel the handcart under the condition of secondary plug and secondary socket not connecting, has improved security and reliability. Furthermore, the utility model provides an interlocking device structure is very simple and occupation space is very little to greatly the cost is reduced and be applicable to the very little switching device in available space, further enlarged the range of application.

Preferably, in the resting orientation, the first end of the interlock mechanism is spaced relative to the cabinet door to allow the cabinet door to close.

Preferably, the support is provided with a locating member abutting the interlocking plate to cooperate with gravity to maintain the interlocking plate in a resting orientation.

Preferably, the bottom end of the interlocking plate is provided with a rolling member configured to move up under the urging of the hand truck moving into the cabinet to move the interlocking plate from a resting orientation to a first orientation.

Preferably, the second ends of the interlock plates are configured to extend to protrude from the interlock plates, the second ends of the interlock plates being pushed up from below by a secondary plug that is moved relative to the secondary socket to connect to the secondary socket to bring the interlock plates to move from a first orientation to a second orientation.

Preferably, in the first orientation, the spacing between the second end of the interlock plate and the horizontal outer side of the secondary socket is less than the length of the secondary plug in the horizontal direction.

Preferably, the interlocking plate is designed to be rotationally or slidably connected to the support.

According to the utility model discloses a switch device is provided in another aspect, including the cabinet body, can follow the horizontal direction and shift out or immigration the handcart of the cabinet body and can for the cabinet body removes in order to open or close the cabinet door of the cabinet body, the internal side of cabinet is equipped with the secondary socket the handcart outside be equipped with can dismantle be connected to the secondary plug of secondary socket, switch device still includes aforementioned an interlocking device who is used for switch device.

Preferably, the horizontal inner side of the cabinet door is provided with a stopper plate extending toward the support for stopping the first end of the interlocking plate.

Additional features and advantages of the invention will be set forth in part in the description which follows, and in part will be apparent to those having ordinary skill in the art upon examination of the following, or may be learned from the practice of the invention.

Drawings

Embodiments of the present invention are described in detail below with reference to the attached drawing figures, wherein:

fig. 1 is a schematic perspective view of a handcart of a switching device according to the present invention;

fig. 2 is a schematic perspective view of an interlock mechanism according to the present invention;

fig. 3(a) is a schematic cross-sectional view of a switching apparatus according to the present invention, with the interlock mechanism in a resting orientation and the hand truck in a service position;

FIG. 3(b) is an enlarged schematic view of region A in FIG. 3 (a);

fig. 4(a) is a schematic cross-sectional view of a switching apparatus according to the present invention, wherein the hand truck contacts the interlock mechanism during movement from the service position to the testing position;

FIG. 4(B) is an enlarged schematic view of region B in FIG. 4 (a);

fig. 5(a) is a schematic cross-sectional view of a switching apparatus according to the present invention, with the interlock mechanism in a first orientation and the hand truck in a testing position;

FIG. 5(b) is an enlarged schematic view of region C in FIG. 5 (a);

fig. 6(a) is a schematic cross-sectional view of a switching apparatus according to the present invention, with the interlock mechanism in a second orientation and the hand truck in a testing position;

FIG. 6(b) is an enlarged schematic view of region D in FIG. 6 (a);

fig. 7(a) is a schematic cross-sectional view of a switching apparatus according to the present invention, wherein the interlock mechanism is in a second orientation and the hand truck is in the operating position;

FIG. 7(b) is an enlarged schematic view of region E in FIG. 7 (a);

description of reference numerals:

1-a switching device; 10-an interlock mechanism; 11-a support; 12-an interlock plate; 13-a first end; 14-a second end; 15-a positioning element; 16-rolling elements; 21-a cabinet body; 22-cabinet door; 23-a secondary socket; 24-a stopper plate; 30-a handcart; 31-a secondary plug; 32-soft connection.

Detailed Description

Referring now to the drawings, illustrative aspects of the disclosed interlock mechanism and switchgear used therewith will be described in detail. Although the drawings are provided to present some embodiments of the invention, the drawings are not necessarily to scale of particular embodiments, and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the disclosure of the present invention. The position of some components in the drawings can be adjusted according to actual requirements on the premise of not influencing the technical effect. The appearances of the phrase "in the drawings" or similar language in the specification are not necessarily referring to all drawings or examples.

Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "above", "below", and other directional terms, will be understood to have their normal meaning and refer to those directions as they normally relate to when viewing the drawings. Unless otherwise indicated, the directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art.

The terms "first," "second," and the like as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

The terms "joined," "connected," and the like as used herein, include both two components that are indirectly connected together through an intermediate layer (e.g., an adhesive, a solder, etc.) or an intermediate member (e.g., a connector, a transition member, etc.), and two components that are directly connected together without any intermediate layer (e.g., an adhesive, a solder, etc.) or intermediate member (e.g., a connector, a transition member, etc.).

Fig. 1 to 7 show, by way of example, an interlocking mechanism 10 according to the invention and a switching device 1 to which it is applied. The interlocking mechanism 10 in this example may be adapted to a withdrawable switching device 1, and the switching device 1 may include a cabinet 21 and a cabinet door 22 movably connected, for example, rotatably connected to the cabinet 21, and the cabinet door 22 may be rotated toward the cabinet door 22 to close the cabinet 21 to cooperate with the cabinet 21 to form a closed handcart room or rotated away from the cabinet door 22 to cooperate with the cabinet 21 to form an open handcart room, so as to facilitate the handcart 30 to enter and exit the handcart room. The hand truck 30 is movable relative to the cabinet 21 in a horizontal direction, i.e., left and right in the page shown in fig. 3-7, controlled by an external transfer mechanism, so that the hand truck 30 is moved sequentially between a service position, a testing position, and a working position. When the hand truck 30 is in the service position, the hand truck 30 is moved out of the hand truck compartment, and there is no electrical connection with the electrical components inside the cabinet 21. When the handcart 30 is in the test position, the handcart 30 is pushed into the handcart room, and the secondary plug 31 on the outer side of the handcart is electrically connected with the secondary socket 23 on the inner side of the cabinet body 21 to conduct the secondary circuit. When the handcart 30 is in the working position, compared with the test position, the handcart 30 is pushed further into the handcart room to be connected with the primary electric element inside the cabinet body 21 so as to conduct the primary loop, and meanwhile, the conduction of the secondary loop between the handcart 30 and the cabinet body 21 is kept. The primary and secondary circuits function in the same way as the primary and secondary circuits of the high-voltage switchgear of the prior art and are not described in detail here. As shown in fig. 1, the secondary plug 31 may be connected to the outside of the hand truck 30 via a flexible connection 32, so that the secondary plug 31 has a certain moving stroke relative to the hand truck 30. In the illustrated embodiment, the interlocking mechanism 10 may include a support 11, an interlocking plate 12, a positioning member 15, and a rolling member 16.

Specifically, the support 11 may be fixedly connected to the inside of the top plate of the handcart room of the cabinet 21, for example, by a bolt connection or a welding connection which makes the two immovable relative to each other. The middle portion of interlocking plate 12 is movably connected to support 11 so as to be movable relative to support 11, and is not limited to the exact center of interlocking plate 12 in size, but rather is in a non-end middle region. The interlocking plate 12 has a first end 13 adjacent to the cabinet door 22 and a second end 14 adjacent to the secondary socket 23 on both sides of the support 11 in the horizontal direction to interact with the secondary plug 31 and the cabinet door 22, respectively. Wherein second end 14 extends from interlock plate 12, as shown in figure 2, to project away from support 11, i.e., outwardly in a direction perpendicular to the plane of the paper in figures 3-7. In the practical application process, the plate-shaped sheet metal component among the prior art can be selected for use to support 11 and interlocking plate 12 to greatly reduce the utility model discloses well interlocking device 10's the degree of difficulty and cost.

When the hand truck 30 is in the service position, the interlock plate 12 abuts the locating member 15 on the support 11 under the force of gravity to maintain the resting orientation. In the resting orientation, the first end 13 of the interlock plate 12 may be spaced from the cabinet door 22 to allow the cabinet 21 to be closed, thereby ensuring the closing of the hand truck compartment and thus the safe operation of other compartments within the switchgear 1 when the hand truck 30 is removed from the cabinet 21 for servicing.

The operator may place the hand truck 30 into the cabinet 21 and push the hand truck 30 to a testing location via the transfer mechanism. Immediately prior to reaching the testing position, the top end of the hand truck 30 contacts the rollers 16 at the bottom end of the interlock plate 12 and lifts the rollers 16 so that the rollers 16 are on the top side of the hand truck 30, causing the interlock plate 12 to move relative to the support base 11 from the resting orientation to the first orientation, at which time the first end 13 of the interlock plate 12 moves to be blocked from closing by the first end 13 of the interlock plate 12 when the cabinet door 22 attempts to close. Subsequently, until the hand truck 30 moves to the testing position, the rolling members 16 at the bottom end of the interlocking plate 12 roll on the top side of the hand truck 30, so that friction between the bottom end of the interlocking plate 12 and the top side of the hand truck 30 may be reduced and the interlocking plate 12 may be maintained in the first orientation, i.e., a state in which the first end 13 of the interlocking plate 12 abuts against the cabinet door 22. As can be appreciated, in the resting orientation, the rollers 16 are located at the lowest point of the interlocking plate 12, such that the rollers 16 first contact and move to the top side of the hand truck 30 as the hand truck 30 pushes into the cabinet 21. In practical application, the rolling members 16 can be selected from rollers, so that the manufacturing difficulty and cost are further reduced.

When the handcart 30 is at the test position, if the operation of connecting the secondary plug 31 and the secondary socket 23 is not performed, the interlocking plate 12 is continuously kept at the first orientation, and the cabinet door 22 cannot be closed, so that an operator can be directly reminded, the handcart 30 is prevented from being continuously moved by the operator under the condition that the secondary plug 31 and the secondary socket 23 are not connected, and the safety and the reliability of the switching device 1 are improved.

With the hand truck 30 in the testing position, the secondary plug 31 on the hand truck 30 is removed and the secondary plug 31 is positioned below the second end 14 of the interlock plate 12, and in moving the secondary plug 31 toward the secondary receptacle 23 for connection to the secondary receptacle 23, the interlock plate 12 is pushed from below the second end 14 of the interlock plate 12, moving the interlock plate 12 to a second orientation relative to the support 11. Wherein the horizontal spacing between the second end 14 of interlock plate 12 and the horizontal outside of secondary receptacle 23 may be less than the length of secondary plug 31 in the horizontal direction, that is, the space left between the second end 14 of interlock plate 12 and secondary receptacle 23 does not allow secondary plug 31 to be directly connected to secondary receptacle 23 without pushing interlock plate 12, thereby ensuring that an operator must push interlock plate 12 from below the second end 14 of interlock plate 12 to make a connection with secondary receptacle 23. When the secondary plug 31 is connected to the secondary receptacle 23, the second end 14 of the interlocking plate 12 overlaps the top side of the secondary plug 31 and the secondary plug 31 is spaced from the interlocking plate 12 except for the second end 14 in the direction of extension of the second end 14 of the interlocking plate 12, while moving the first end 13 of the interlocking plate 12 into a spaced arrangement from the cabinet door 22 to allow the cabinet door 22 to close. Such a design ensures that the secondary plug 31 must be connected to the secondary socket 23 to close the cabinet door 22 of the switch device 1, and thus intuitively prompts the operator to connect the secondary plug 31 and the secondary socket 23.

When the interlock plate 12 is in the second orientation, the interlock plate 12 is disengaged from the hand truck 30 except for the secondary plug 31 so that the hand truck 30 is moved further to the operating position to complete the conduction of the primary circuit.

When the hand truck 30 is moved from the service position to the test position, if it is desired to remove the secondary plug 31 from the secondary socket 23, the interlock plate 12 may be pushed further to move to the third orientation such that the second end 14 of the interlock plate 12 is slightly raised on the top side of the secondary plug 31, the interlock plate 12 completely disengages from the secondary plug 31, and removal of the secondary plug 31 may be facilitated.

Alternatively, the coupling between interlock plate 12 and support 11 may be configured as a rotational or sliding coupling, or the like, such that interlock plate 12 is movable relative to support 11 to change between a rest orientation, a first orientation, a second orientation, and a third orientation.

In one example, as shown in fig. 2 to 7, the interlock plate 12 is configured to be rotatably coupled to the support 11, and the configuration of the interlock mechanism 10 may be exemplarily described as follows:

the middle portion of the interlock plate 12 may be connected to the support 11 via a rotation pin, and at this time, the rotation pin may serve as a rotation center of the interlock plate 12 with respect to the support 11. A positioning member 15 is provided on the support 11 at the upper right of the rotation pin to abut against the upper right side of the interlocking plate 12, so that the interlocking plate 12 is restricted by the positioning member 15 when rotated counterclockwise by gravity, so that the interlocking plate 12 has a first end 13 adjacent to the cabinet door 22 and a second end 14 adjacent to the secondary socket 23 at both sides of the support 11 in the horizontal direction to interact with the secondary plug 31 and the cabinet door 22, respectively. In the resting orientation, the first end 13 of the interlock plate 12 is above a stop plate 24 extending toward the support 11 on the door 22, but not at the same level as the stop plate 24, allowing the door 22 to close.

The operator may place the hand truck 30 into the cabinet 21 and push the hand truck 30 to a testing location via the transfer mechanism. Just before the test site is reached, the top end of the hand truck 30 contacts the rolling members 16 at the bottom end of the interlocking plate 12, and the rolling members 16 are lifted to position the rolling members 16 at the top side of the hand truck 30, and simultaneously the interlocking plate 12 is driven to rotate clockwise relative to the support base 11, the first end 13 of the interlocking plate 12 moves down to be positioned at the same horizontal line with the stop plate 24 on the cabinet door 22, so that the first end 13 of the interlocking plate 12 stops the stop plate 24 from moving further when the cabinet door 22 tries to close, and the cabinet door 22 cannot be closed. While second end 14 of interlock plate 12 moves up to move from the rest orientation to the first orientation. When the handcart 30 is in the test position, the secondary plug 31 on the handcart 30 is removed, the secondary plug 31 is located below the second end 14 of the interlocking plate 12, in the process of moving the secondary plug 31 towards the secondary socket 23 to be connected to the secondary socket 23, the interlocking plate 12 is pushed from below the second end 14 of the interlocking plate 12, the interlocking plate 12 continues to rotate clockwise relative to the support 11, the first end 13 of the interlocking plate 12 continues to move downwards and is located below the stop plate 24 of the cabinet door 22, and is not located at the same horizontal line with the stop plate 24 of the cabinet door 22, so that the cabinet door 22 can be allowed to be closed. Simultaneously, second end 14 of interlock plate 12 moves up, rotating interlock plate 12 from the first orientation to the second orientation. When the hand truck 30 is moved from the service position to the test position, if it is desired to remove the secondary plug 31 from the secondary receptacle 23, the interlock plate 12 can be further rotated clockwise to a third orientation such that the second end 14 of the interlock plate 12 is slightly raised on the top side of the secondary plug 31, thereby facilitating removal of the secondary plug 31.

Alternatively, when no stop plate 24 is provided on the cabinet door 22, the projection of the first end 13 of the interlocking plate 12 in the horizontal direction in the first orientation may be made closer to the cabinet door 22 and extend beyond the cabinet body 21 than in the rest orientation and the second orientation, such that the interlocking plate 12 in the first orientation may block the cabinet door 22 from closing. Accordingly, the first end 13 of interlocking plate 12 does not project in a horizontal direction beyond cabinet 21 in the resting orientation and the second orientation, allowing cabinet door 22 to be closed.

In yet another example (not shown), the interlock plate is configured to be slidably coupled to the support, and the configuration of the interlock mechanism may be exemplarily described as follows:

the middle portion of the interlocking plate may be cooperatively coupled with the holder via a slider and a vertically arranged sliding slot or hole, such as an oblong hole, so that the interlocking plate may move vertically up and down relative to the holder, and the stroke of the interlocking plate relative to the holder may be determined by the length of the interlocking plate and the oblong hole in the holder. Under the action of gravity, the slide pieces in the interlocking plate and the support abut against the end of the oblong hole, so that the positioning of the interlocking plate relative to the support is realized, and the interlocking plate is in a standing orientation and has a first end adjacent to the cabinet door and a second end adjacent to the secondary socket, which are positioned on both sides of the support in the horizontal direction, so as to respectively interact with the secondary plug and the cabinet door. In the resting orientation, the first end of the interlock plate is below a stop plate extending toward the support on the door and is not level with the stop plate, thereby allowing the door to close.

An operator can put the handcart into the cabinet body and push the handcart to a test position through the transfer mechanism. Just before reaching the test position, the top end of the handcart is contacted with the rolling piece at the bottom end of the interlocking plate, the rolling piece is lifted to enable the rolling piece to be located on the top side of the handcart, meanwhile, the interlocking plate is driven to move upwards relative to the support integrally, the first end of the interlocking plate moves upwards to be located on the same horizontal line with the stop plate on the cabinet door, and therefore the first end of the interlocking plate resists further movement of the stop plate when the cabinet door tries to be closed, and the cabinet door cannot be closed. While the second end of the interlocking plate moves up to be oriented from the rest orientation to the first orientation. When the handcart is in the test position, the secondary plug on the handcart is taken down and is positioned below the second end of the interlocking plate, in the process of moving the secondary plug towards the secondary socket to be connected to the secondary socket, the interlocking plate is pushed from the lower side of the second end of the interlocking plate, the interlocking plate is enabled to move upwards relative to the support, the first end of the interlocking plate continues to move upwards and is positioned above the stop plate of the cabinet door, and the first end of the interlocking plate and the stop plate of the cabinet door are not positioned on the same horizontal line, so that the cabinet door can be allowed to be closed. Simultaneously the second end of the interlock plate moves up to rotate the interlock plate from the first orientation to the second orientation. When the handcart is moved from the working position to the test position, if the secondary plug needs to be detached from the secondary socket, the interlocking plate can be further pushed upwards to move upwards to the third orientation, so that the second end of the interlocking plate is slightly lifted at the top side of the secondary plug, and the secondary plug can be conveniently detached.

It should be understood that although the description is in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.

Claims (9)

1. An interlocking mechanism (10) for a switching device (1), the switching device (1) comprising a cabinet body (21), a hand truck (30) movable in and out of the cabinet body (21) in a horizontal direction, and a cabinet door (22) movable relative to the cabinet body (21) to open or close the cabinet body (21), a secondary socket (23) being provided inside the cabinet body (21), a secondary plug (31) detachably connected to the secondary socket (23) being provided outside the hand truck (30), characterized in that the interlocking mechanism (10) comprises:

a support (11) connected to the inside of the cabinet (21) and located between the secondary socket (23) and the cabinet door (22) in the horizontal direction;

an interlocking plate (12) which is pivotally connected at its middle to the support (11) and has a first end (13) and a second end (14) which are located on either side of the support (11) in a horizontal direction, the first end (13) of the interlocking plate (12) being adjacent to the cabinet door (22) and the second end (14) thereof being adjacent to the secondary socket (23), the interlocking plate (12) being configured such that its bottom end is urged by the hand truck (30) moving into the cabinet (21) to move it from a rest orientation to a first orientation in which the first end (13) of the interlocking plate (12) abuts against the cabinet door (22) without allowing the cabinet door (22) to close, and the second end (14) thereof is urged by the secondary plug (31) moving relative to the secondary socket (23) to connect to the secondary socket (23) to move it from the first orientation to a second orientation, in a second orientation, the first end (13) of the interlock plate (12) is spaced from the cabinet door (22) to allow the cabinet door (22) to be closed.

2. Interlocking mechanism (10) for a switching device (1), according to claim 1, characterized in that in resting orientation the first end (13) of the interlocking mechanism (10) is arranged spaced with respect to the cabinet door (22) to allow the cabinet door (22) to close.

3. Interlocking mechanism (10) for a switching device (1), according to claim 1, characterised in that the support (11) is provided with a positioning element (15) abutting the interlocking plate (12) to keep the interlocking plate (12) in a rest orientation in cooperation with the action of gravity.

4. The interlock mechanism (10) for a switching device (1) according to claim 1, wherein a bottom end of the interlock plate (12) is provided with a roller (16), the roller (16) being configured to move up under the urging of the hand truck (30) moving into the cabinet (21) to move the interlock plate (12) from a resting orientation to a first orientation.

5. The interlock mechanism (10) for a switching device (1) according to claim 1, wherein the second end (14) of the interlock plate (12) is configured to extend to protrude from the interlock plate (12), the second end (14) of the interlock plate (12) being pushed up from below by a secondary plug (31) that is moved relative to the secondary receptacle (23) to connect to the secondary receptacle (23) to move the interlock plate (12) from the first orientation to the second orientation.

6. The interlock mechanism (10) for a switching device (1) according to claim 1 wherein in the first orientation, a spacing between the second end (14) of the interlock plate (12) and a horizontal outer side of the secondary receptacle (23) is less than a length of the secondary plug (31) in a horizontal direction.

7. Interlocking mechanism (10) for a switching device (1) according to any one of claims 1 to 6, characterized in that the interlocking plate (12) is designed to be rotationally or slidingly connected to the support (11).

8. A switching device (1), comprising a cabinet body (21), a handcart (30) which can move out or in the cabinet body (21) along a horizontal direction, and a cabinet door (22) which can move relative to the cabinet body (21) to open or close the cabinet body (21), wherein a secondary socket (23) is arranged inside the cabinet body (21), a secondary plug (31) which can be detachably connected to the secondary socket (23) is arranged outside the handcart (30), and the switching device (1) further comprises an interlocking mechanism (10) for the switching device (1) according to any one of claims 1 to 7.

9. The switching device (1) according to claim 8, wherein the horizontal inner side of the cabinet door (22) is provided with a stop plate (24) extending towards the support (11) for abutting against the first end (13) of the interlocking plate (12).

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