Interlocking device based on sealing mechanism

Abstract

The utility model discloses an interlocking device based on a sealing mechanism, which comprises an interlocking box and a plurality of interlocking mechanisms, the plurality of interlocking mechanisms are integrated and installed in the interlocking box, the interlocking box comprises an interlocking plate, and a switching-on and switching-off operation shaft and a grounding operation shaft are distributed on the interlocking plate. And the plurality of interlocking mechanisms are respectively linked with the interlocking plate or / and the opening and closing operation shaft or / and the grounding operation shaft. According to the utility model, the opening and closing and grounding operation of the isolation mechanism controls the stroke of the interlocking plate; the switch-on interlocking mechanism, the switch-on prohibition interlocking mechanism, the door interlocking mechanism, the electromagnetic lock interlocking mechanism and the anti-switch-on grounding interlocking mechanism achieve various interlocking requirements of the circuit breaker by means of the stroke of the interlocking plate and the stroke of the switch-on, switch-off and switch-on operation shaft respectively, the structure is simple, and the reliability is high.

Description

Technical Field

[0001] The utility model belongs to the field of electrical technology and relates to an interlocking device based on a sealing mechanism. Background Art

[0002] In actual applications, there will be various interlocking configuration requirements for the mechanism to achieve different interlocking functions. The existing ring network cabinet operating mechanism needs to adjust more structures when encountering different needs. Different interlocks are not related and need to be avoided in space, which is not easy to design interlocks. Summary of the invention

[0003] In order to overcome at least one deficiency of the prior art, the utility model provides an interlocking device based on a sealing mechanism.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an interlocking device based on a sealing mechanism, comprising an interlocking box and a plurality of interlocking mechanisms, wherein the plurality of interlocking mechanisms are integrated and installed in the interlocking box, wherein the interlocking box comprises an interlocking plate, and is provided with a switching operation shaft and a grounding operation shaft, wherein the plurality of interlocking mechanisms are respectively linked with the interlocking plate and / or the switching operation shaft and / or the grounding operation shaft.

[0005] Furthermore, some of the interlocking mechanisms include at least a closing interlocking mechanism, a closing prohibition interlocking mechanism, a door interlocking mechanism, an electromagnetic lock interlocking mechanism and an anti-closing grounding interlocking mechanism, and the interlocking box includes an interlocking plate, and the closing interlocking mechanism, the closing prohibition interlocking mechanism, the door interlocking mechanism and the electromagnetic lock interlocking mechanism are respectively linked with the interlocking plate and / or the opening and closing operating shaft and / or the grounding operating shaft.

[0006] Furthermore, the interlock box is fixedly mounted on the outside of the housing of the isolation unit of the circuit breaker, an isolation mechanism is arranged inside the isolation unit, the circuit breaker comprises a circuit breaker mechanism, and the isolation mechanism is connected to the circuit breaker mechanism via a closing interlock mechanism.

[0007] Furthermore, the closing interlock mechanism includes an interlocking rod, a reverse interlocking plate and a baffle. The interlocking rod is connected to the circuit breaker mechanism, the interlocking rod moves synchronously with the circuit breaker mechanism, the reverse interlocking plate is fixed on the interlocking rod, the baffle is fixed on the opening and closing operating shaft, and the baffle is locked or unlocked with the reverse interlocking plate.

[0008] Furthermore, the anti-closing grounding interlocking mechanism is respectively connected to the opening and closing operating shaft and the interlocking plate, and the interlocking plate is locked or unlocked by the anti-closing grounding interlocking mechanism.

[0009] Furthermore, the anti-closing grounding interlocking mechanism includes a baffle and a baffle plate, the baffle plate is fixed on the opening and closing operating shaft, the baffle plate is fixed on the interlocking plate, the closing baffle plate of the isolation mechanism is locked with the baffle plate, and the opening baffle plate of the isolation mechanism is unlocked with the baffle plate.

[0010] Furthermore, the closing interlocking mechanism inhibiting the closing interlocking mechanism is linked with the closing interlocking mechanism and the interlocking plate, and the closing interlocking mechanism and the interlocking plate are locked or unlocked by the closing interlocking mechanism inhibiting the closing interlocking mechanism.

[0011] Furthermore, the closing prohibiting interlocking mechanism includes a moving plate and a limiting plate, the moving plate is fixed on the interlocking plate, the limiting plate is fixed on the interlocking connecting rod of the closing interlocking mechanism, the moving plate is located above the limiting plate, and the moving plate is locked or unlocked with the limiting plate.

[0012] Furthermore, the circuit breaker also includes a door interlock device, and the door interlock mechanism is linked with the door interlock device and the interlock plate. The door interlock device and the cable room door are locked or unlocked through the door interlock mechanism. The door interlock mechanism includes an interlock reinforcement plate and a chain lever plate. The interlock reinforcement plate is connected to the interlock plate, the interlock reinforcement plate and the interlock plate move synchronously, and the chain lever plate is connected to the door interlock device. The door interlock device and the door are locked or unlocked through the linkage of the interlock reinforcement plate and the chain lever plate.

[0013] Furthermore, the electromagnetic lock interlocking mechanism includes an electromagnetic lock, a contact and a baffle, the electromagnetic lock is fixed to the housing, the contact is arranged on the electromagnetic lock, the baffle is fixed to the interlocking plate, and the contact and the baffle are linked to cut off the electric operation of the electromagnetic lock.

[0014] In summary, the utility model is beneficial in that:

[0015] 1) The travel of the opening and closing and grounding operation control interlock plate of the isolation mechanism of the utility model, the closing interlock mechanism, the prohibition closing interlock mechanism, the door interlock mechanism, the electromagnetic lock interlock mechanism and the anti-closing grounding interlock mechanism respectively use the interlock plate and the travel of the closing, opening and closing operating shaft to achieve various interlocking requirements of the circuit breaker, and the structure is simple and the reliability is high.

[0016] 2) The utility model extends the function of the existing interlock box. The interlock box, as a basic component, integrates the closing interlock mechanism, the prohibiting closing interlock mechanism, the door interlock mechanism, the electromagnetic lock interlock mechanism and the anti-closing grounding interlock mechanism in the interlock box, greatly expanding the interlock box's capacity to accommodate interlock structures for achieving different interlocking purposes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an axonometric diagram of the interlocking device and housing assembly of the utility model.

[0018] Figure 2 This is a front view of the assembly of the interlocking device and the housing of the utility model.

[0019] Figure 3 It is a schematic diagram of the internal structure of the interlocking plate of the utility model.

[0020] Figure 4 It is a schematic diagram of the interlocking plate of the utility model.

[0021] Figure 5 It is a schematic diagram of the interlocking lever plate of the present utility model.

[0022] Symbols in the figure: interlock box 1, closing interlock mechanism 2, prohibiting closing interlock mechanism 3, door interlock mechanism 4, door interlock device 5, electromagnetic lock interlock mechanism 6, anti-closing grounding interlock mechanism 7, interlock plate 11, opening and closing operating shaft 12, grounding operating shaft 13, interlock block 21, interlock connecting rod 22, reverse interlocking plate 23, baffle 24, moving plate 31, limiting plate 32, interlock reinforcement plate 41, interlocking lever plate 42, interlocking rod group 51, locking assembly 52, reverse assembly 53, electromagnetic lock 61, contact 62, baffle 63, baffle 71, housing 100, opening and closing operating hole 111, grounding operating hole 112, slide groove 221, fastener 222, input end 421, output end 422, etc. DETAILED DESCRIPTION

[0023] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations. The details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0024] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0025] All directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present invention may actually be an approximately parallel relationship, and the vertical relationship may actually be an approximately vertical relationship.

[0027] Embodiment 1:

[0028] like Figure 1-Figure 5As shown, an interlocking device based on a sealing mechanism includes an interlocking box 1 and a plurality of interlocking mechanisms, wherein the plurality of interlocking mechanisms are integrated and installed in the interlocking box 1, the interlocking box 1 includes an interlocking plate 11, and is provided with a switching operation shaft 12 and a grounding operation shaft 13, and the plurality of interlocking mechanisms are respectively linked with the interlocking plate 11 and / or the switching operation shaft 12 and / or the grounding operation shaft 13.

[0029] Several interlocking mechanisms include but are not limited to a closing interlocking mechanism 2, a closing prohibition interlocking mechanism 3, a door interlocking mechanism 4, an electromagnetic lock interlocking mechanism 6 and an anti-closing grounding interlocking mechanism 7. The interlocking box 1 includes an interlocking plate 11. The closing interlocking mechanism 2, the closing prohibition interlocking mechanism 3, the door interlocking mechanism 4 and the electromagnetic lock interlocking mechanism 6 are respectively linked to the interlocking plate 11 and / or the opening and closing operating shaft 12 and / or the grounding operating shaft 13.

[0030] The interlock box 1 is fixedly arranged outside the housing 100 of the isolation unit of the circuit breaker. The upper and lower sides of the interlock box 1 are provided with a switch-on and switch-off operation shaft 12 and a grounding operation shaft 13. The switch-on and switch-off operation shaft 12 and the grounding operation shaft 13 are components of the isolation mechanism. The interlock plate 11 is provided with a switch-on and switch-off operation hole 111 and a grounding operation hole 112. The switch-on and switch-off operation hole 111 and the grounding operation hole 112 are distributed up and down on the interlock plate 11. When the interlock plate 11 is moved upward, the grounding operation hole 112 and the grounding operation shaft 13 are connected. Relatively speaking, the opening and closing operation hole 111 is hidden in the interlocking plate 11, and the handle operates the grounding operation shaft 13 to realize the grounding operation of the isolation mechanism; the interlocking plate 11 is moved downward, the opening and closing operation hole 111 is opposite to the opening and closing operation shaft 12, the grounding operation shaft 13 is hidden in the interlocking plate 11, and the handle operates the opening and closing operation shaft 12 to realize the opening and closing operation of the isolation mechanism. The structure of the isolation mechanism, the opening and closing operation shaft 12, the grounding operation shaft 13 and the interlocking plate 11 is a conventional structure, which will not be elaborated here.

[0031] The circuit breaker also includes a circuit breaker mechanism (not shown in the figure). The isolation mechanism is connected to the circuit breaker mechanism through a closing interlock mechanism 2. The closing interlock mechanism 2 allows the circuit breaker mechanism to be closed only when the isolation mechanism is in a closed state, thereby improving safety and mechanism reliability.

[0032] The circuit breaker further comprises a door interlocking device 5 (not shown in the figure), the isolation mechanism is connected to the door interlocking device 5 via the door interlocking device 4, and the door is locked or unlocked by the door interlocking device 5 via the door interlocking device 4.

[0033] The closing interlocking mechanism 2 includes an interlocking link 22, a reverse interlocking plate 23 and a baffle 24. The interlocking link 22 is connected to the circuit breaker mechanism, and the interlocking link 22 moves synchronously with the circuit breaker mechanism. The reverse interlocking plate 23 is fixed on the interlocking link 22, and the baffle 24 is fixed on the closing and opening operating shaft 12. The baffle 24 is locked or unlocked with the reverse interlocking plate 23.

[0034] The closing interlocking mechanism 2 comprises an interlocking block 21, and the interlocking block 21 is respectively connected to an interlocking link 22 and a circuit breaker mechanism.

[0035] according to Figure 2 From a visual perspective, when the opening and closing operating shaft 12 is manually operated to open the circuit, the baffle 24 rotates counterclockwise to the top of the reverse interlocking plate 23, locking the interlocking plate 23 and restricting the interlocking link 22 from moving upward, thereby locking the interlocking block 21 and prohibiting the circuit breaker mechanism from closing. When the opening and closing operating shaft 12 is closed, the baffle 24 rotates clockwise to unlock the interlocking plate 23, the interlocking link 22 moves upward, and the circuit breaker mechanism performs a closing operation.

[0036] The interlocking link 22 is slidably connected to the housing 100. Specifically, the interlocking link 22 is provided with a plurality of slide grooves 221. The housing 100 is fixed with a plurality of fasteners 222. The fasteners 222 are located in the slide grooves 221. When the interlocking link 22 moves up and down, the fasteners 222 slide in the slide grooves 221.

[0037] A plurality of slide grooves 221 and a plurality of fasteners 222 are distributed at different positions of the interlocking link 22 to ensure the sliding stability of the interlocking link 22 .

[0038] The anti-closing grounding interlocking mechanism 7 is linked with the opening and closing operating shaft 12 and the interlocking plate 11 to realize the function of prohibiting grounding when the isolation mechanism is closed.

[0039] The anti-closing grounding interlocking mechanism 7 includes a baffle 24 and a baffle plate 71. The baffle plate 71 is fixed on the interlocking plate 11. The closing baffle 24 and the baffle plate 71 of the isolation mechanism are in the same direction, and the baffle 24 locks the baffle plate 71. The opening baffle 24 and the baffle plate 71 of the isolation mechanism are in different directions, and the baffle 24 unlocks the baffle plate 71.

[0040] according to Figure 2 From a visual angle, when the isolation mechanism is closed, the closing and opening operating shaft 12 rotates clockwise, the baffle 24 is in the same direction as the baffle 71, the baffle 24 is located above the baffle 71, the interlock plate 11 is locked, and the interlock plate 11 is restricted from moving upward, thereby prohibiting the operation of the grounding operating shaft 13; when the isolation mechanism is opened, the closing and opening operating shaft 12 rotates counterclockwise, the baffle 24 and the baffle 71 are in different directions, the baffle 24 unlocks the baffle 71, the interlock plate 11 moves downward, and the grounding operating shaft 13 is operated for grounding, thereby preventing the grounding switch from being operated when the circuit is closed, thereby improving safety.

[0041] The closing interlock mechanism 3 is prohibited from being linked with the closing interlock mechanism 2 and the interlock plate 11. By prohibiting the closing interlock mechanism 3, the closing interlock mechanism 2 and the interlock plate 11 are locked or unlocked, thereby realizing the function of prohibiting the circuit breaker mechanism from closing during the operation of the opening and closing operating shaft 12.

[0042] The prohibiting closing interlocking mechanism 3 includes a moving plate 31 and a limiting plate 32. The moving plate 31 is fixed on the interlocking plate 11, and the limiting plate 32 is fixed on the interlocking link 22 of the closing interlocking mechanism 2. The moving plate 31 is located above the limiting plate 32. The moving plate 31 and the limiting plate 32 are locked or unlocked. The locking or unlocking operation between the moving plate 31 and the limiting plate 32 is used to realize the locking or unlocking of the interlocking plate 11 and the closing interlocking mechanism 2 during the operation of the opening and closing operating shaft 12.

[0043] When it is necessary to operate the opening and closing operating shaft 12, the interlocking plate 11 is moved downward so that the opening and closing operating hole 111 is opposite to the opening and closing operating shaft 12. At this time, the movable plate 31 moves downward synchronously with the interlocking plate 11 until it abuts against the limiting plate 32, locks the limiting plate 32, and limits the upward movement of the interlocking link 22, thereby locking the interlocking block 21, and prohibiting the circuit breaker mechanism from closing when the opening and closing operating shaft 12 is operated.

[0044] In this embodiment, the closing interlock mechanism 3 is prohibited from utilizing the stroke of the interlock plate 11 to lock the closing interlock mechanism 2, so as to prohibit the circuit breaker mechanism from closing when the opening and closing operating shaft 12 is operated. The blocking piece 24 utilizes the stroke of the opening and closing operating shaft 12 to lock the interlock link 22 to realize the function that the circuit breaker mechanism is allowed to close only when the isolation mechanism is in the closed state, so as to improve the safety and reliability of the mechanism, or the interlock plate 11 is locked to realize the function of prohibiting grounding when the isolation mechanism is closed.

[0045] The door interlock mechanism 4 is linked with the door interlock device 5 and the interlock plate 11 , and the door interlock device 5 and the door are locked or unlocked through the door interlock mechanism 4 .

[0046] The door interlock mechanism 4 includes an interlock reinforcement plate 41 and a chain lever plate 42. The interlock reinforcement plate 41 is connected to the interlock plate 11. The interlock reinforcement plate 41 and the interlock plate 11 move synchronously. The chain lever plate 42 is connected to the door interlock device 5. The interlock reinforcement plate 41 and the chain lever plate 42 work in conjunction to achieve locking or unlocking of the door interlock device 5 and the door.

[0047] The interlocking lever plate 42 is rotatably connected to the outer shell 100, and the interlocking lever plate 42 includes an input end 421 and an output end 422. The rotation center of the interlocking lever plate 42 and the outer shell 100 is located between the input end 421 and the output end 422. The input end 421 is located above the interlocking reinforcement plate 41, the input end 421 is linked to the interlocking reinforcement plate 41, and the output end 422 is connected to the door interlocking device 5.

[0048] The door interlocking device 5 includes an interlocking rod group 51, a locking component 52 and a reverse component 53. The interlocking rod group 51 is connected to the output end 422, the interlocking rod group 51 and the locking component 52 are connected, the reverse component 53 is linked to the cable room door, and the reverse component 53 and the interlocking rod group 51 are locked or unlocked.

[0049] The output end 422 moves upward, driving the interlocking rod group 51 to move upward synchronously, driving the locking component 52 to move backward, and unlocking the cable room door. After the cable room door is opened, the reverse component 53 moves outward under the action of elastic force and is snap-connected with the interlocking rod group 51 to lock the interlocking rod group 51. When the cable room door is not closed, the interlocking rod group 51 always remains locked under the action of the reverse component 53. When the grounding and opening operation is performed, the interlocking plate moves up to operate the grounding operating shaft 13. The input end 421 cannot drive the interlocking lever plate 42 during the upward movement, and thus the grounding and opening operation cannot be realized, thereby realizing the function of prohibiting the grounding switch operation from opening when the cable room door is not closed.

[0050] Preferably, the interlocking reinforcement plate 41 is fixed to the limiting plate 32 .

[0051] The electromagnetic lock interlocking mechanism 6 includes an electromagnetic lock 61 , a contact 62 and a baffle 63 . The electromagnetic lock 61 is fixed to the housing 100 , the contact 62 is provided on the electromagnetic lock 61 , and the baffle 63 is fixed to the interlocking plate 11 . The contact 62 and the baffle 63 cooperate to cut off the electric operation of the electromagnetic lock 61 .

[0052] The closing and opening operating shaft 12 or the grounding operating shaft 13 is manually operated to perform the closing and opening and grounding operations of the isolation mechanism. The electromagnetic lock 61 is connected to the isolation mechanism, and the closing and opening and grounding operations of the isolation mechanism are performed electrically through the electromagnetic lock 61. The electromagnetic lock interlocking mechanism 6 prevents safety hazards caused by electric operation during manual operation, thereby effectively improving safety.

[0053] The contact 62 is located on the center plane of the closing / opening operating shaft 12 and the grounding operating shaft 13. When operating the closing / opening operating shaft 12 or the grounding operating shaft 13 at will, the interlocking plate 11 needs to be moved up or down. During the movement of the interlocking plate 11, the baffle 63 collides with the contact 62, the contact 62 retracts, and the electromagnetic lock 61 is closed, thereby realizing the electric operation of closing the electromagnetic lock 61 when the closing / opening operating shaft 12 or the grounding operating shaft 13 is manually operated, thereby improving safety.

[0054] The connection between the electromagnetic lock 61 and the contact 62 is a conventional connection mode. The contact 62 retracts when subjected to the force 3 and generates a force signal. The electromagnetic lock 61 receives the force signal from the contact 62 and closes the electromagnetic lock 61 .

[0055] In this embodiment, the travel of the closing and opening of the isolation mechanism and the grounding operation control interlock plate 11, the closing interlock mechanism 2, the prohibiting closing interlock mechanism 3, the door interlock mechanism 4, the electromagnetic lock interlock mechanism 6 and the anti-closing grounding interlock mechanism 7 respectively use the interlock plate 11 and the travel of the closing, opening and closing operation shaft 12 to achieve various interlocking requirements of the circuit breaker, and the structure is simple and the reliability is high; the present application extends the function of the existing interlock box 1, and the interlock box 1 is used as a basic component to integrate the closing interlock mechanism 2, the prohibiting closing interlock mechanism 3, the door interlock mechanism 4, the electromagnetic lock interlock mechanism 6 and the anti-closing grounding interlock mechanism 7 in the interlock box 1, which greatly expands the accommodation of the interlock box 1 for interlocking structures that achieve different interlocking purposes.

[0056] The interlocking device in this embodiment can be used alone in existing equipment, and the circuit breaker, isolation mechanism, circuit breaker mechanism, electromagnetic lock 61, door interlocking device and other unexplained structures use existing components and are not described here.

[0057] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. An interlocking device based on a sealing mechanism, characterized in that: It includes an interlock box and several interlock mechanisms, which are integrated and installed in the interlock box. The interlock box includes an interlock plate, and is distributed with a switch-on and switch-off operating shaft and a grounding operating shaft. The several interlock mechanisms are respectively linked with the interlock plate and / or the switch-on and switch-off operating shaft and / or the grounding operating shaft.

2. An interlocking device based on a sealing mechanism according to claim 1, characterized in that: Several of the interlocking mechanisms include at least a closing interlocking mechanism, a closing prohibition interlocking mechanism, a door interlocking mechanism, an electromagnetic lock interlocking mechanism and an anti-closing grounding interlocking mechanism. The interlocking box includes an interlocking plate. The closing interlocking mechanism, the closing prohibition interlocking mechanism, the door interlocking mechanism and the electromagnetic lock interlocking mechanism are respectively linked with the interlocking plate and / or the opening and closing operating shaft and / or the grounding operating shaft.

3. An interlocking device based on a sealing mechanism according to claim 2, characterized in that: The interlock box is fixedly arranged outside the shell of the isolation unit of the circuit breaker. An isolation mechanism is arranged inside the isolation unit. The circuit breaker comprises a circuit breaker mechanism. The isolation mechanism is connected with the circuit breaker mechanism through a closing interlock mechanism.

4. An interlocking device based on a sealing mechanism according to claim 3, characterized in that: The closing interlocking mechanism comprises an interlocking rod, a reverse interlocking plate and a baffle. The interlocking rod is connected to the circuit breaker mechanism, the interlocking rod and the circuit breaker mechanism move synchronously, the reverse interlocking plate is fixed on the interlocking rod, the baffle is fixed on the opening and closing operating shaft, and the baffle is locked or unlocked with the reverse interlocking plate.

5. An interlocking device based on a sealing mechanism according to claim 2, characterized in that: The anti-closing grounding interlocking mechanism is connected to the opening and closing operating shaft and the interlocking plate respectively, and the interlocking plate is locked or unlocked by the anti-closing grounding interlocking mechanism.

6. An interlocking device based on a sealing mechanism according to claim 2, characterized in that: The anti-closing grounding interlocking mechanism comprises a baffle and a baffle plate, wherein the baffle plate is fixedly arranged on the opening and closing operating shaft, and the baffle plate is fixedly arranged on the interlocking plate, the closing baffle plate of the isolation mechanism is locked with the baffle plate, and the opening baffle plate of the isolation mechanism is unlocked with the baffle plate.

7. An interlocking device based on a sealing mechanism according to claim 2, characterized in that: The closing prohibiting interlock mechanism is linked with the closing interlock mechanism and the interlock plate, and the closing interlock mechanism and the interlock plate are locked or unlocked by the closing prohibiting interlock mechanism.

8. An interlocking device based on a sealing mechanism according to claim 2, characterized in that: The interlocking mechanism for prohibiting closing includes a moving plate and a limiting plate. The moving plate is fixed on the interlocking plate, and the limiting plate is fixed on the interlocking connecting rod of the closing interlocking mechanism. The moving plate is located above the limiting plate, and the moving plate is locked or unlocked with the limiting plate.

9. An interlocking device based on a sealing mechanism according to claim 3, characterized in that: The circuit breaker also includes a door interlocking device, a door interlocking mechanism is linked with the door interlocking device and the interlocking plate, and the door interlocking device and the cable room door are locked or unlocked through the door interlocking mechanism. The door interlocking mechanism includes an interlocking reinforcement plate and a chain lever plate, the interlocking reinforcement plate is connected to the interlocking plate, the interlocking reinforcement plate and the interlocking plate move synchronously, the chain lever plate is connected to the door interlocking device, and the door interlocking device and the door are locked or unlocked through the linkage of the interlocking reinforcement plate and the chain lever plate.

10. An interlocking device based on a sealing mechanism according to claim 3, characterized in that: The electromagnetic lock interlocking mechanism comprises an electromagnetic lock, a contact and a baffle, wherein the electromagnetic lock is fixedly arranged on the housing, the contact is arranged on the electromagnetic lock, the baffle is fixedly arranged on the interlocking plate, and the contact and the baffle are linked to cut off the electric operation of the electromagnetic lock.

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