Interlocking mechanism of switch cabinet and switch cabinet

Abstract

The interlocking mechanism of the switchgear includes a closing locking element, an interlocking unit, and a locking spring element. The closing locking element can move between a closed locked position and a closed unlocked position. When in the closed locked position, the closing locking element locks the circuit breaker of the switchgear in the closed state. The interlocking unit can operate to switch between a locked state and an unlocked state. The interlocking unit in the locked state can abut against the closing locking element in the closed locked position to prevent the closing locking element from moving to the closed unlocked position. The cabinet door in the closed state can abut against the interlocking unit in the unlocked state to prevent the interlocking unit from switching to the locked state. The locking spring element can drive the interlocking unit to switch from the unlocked state to the locked state. This interlocking mechanism constrains the operation logic of the cabinet door and the circuit breaker through a mechanical structure, so that when the cabinet door is in the detached state, the closed circuit breaker is locked in the closed state. A switchgear is also provided.

Description

Technical Field

[0001] This invention relates to the field of power equipment, and more particularly to the interlocking mechanism of switchgear and switchgear itself. Background Technology

[0002] During switchgear maintenance, to ensure the safety of maintenance personnel, the circuit breaker must be kept closed even when the switchgear door is open to maintain grounding at the feeder end. However, existing switchgear designs do not establish a mechanical interlock between the switchgear door and the circuit breaker's state, making it impossible to enforce the operational logic of both through mechanical structures. Summary of the Invention

[0003] The purpose of this invention is to provide an interlocking mechanism for a switchgear, which can constrain the operation logic of the cabinet door and the circuit breaker through a mechanical structure.

[0004] Another object of the present invention is to provide a switch cabinet that can constrain the operation logic of the cabinet door and the circuit breaker through a mechanical structure.

[0005] This invention provides an interlocking mechanism for a switchgear. The switchgear includes a support body and a cabinet door. The cabinet door can close to the support body to reach a closed state. The interlocking mechanism includes a closing locking member, an interlocking unit, and a locking elastic member. The closing locking member is movable relative to the support body between a closed locked position and a closed unlocked position. When in the closed locked position, the closing locking member is used to lock the circuit breaker of the switchgear in the closed state. The interlocking unit is mounted on the support body and can operate to switch between a locked state and an unlocked state. The interlocking unit in the locked state can abut against the closing locking member in the closed locked position to prevent the closing locking member from moving to the closed unlocked position. The cabinet door in the closed state can abut against the interlocking unit in the unlocked state to prevent the interlocking unit from switching to the locked state. The locking elastic member can apply an elastic restoring force to the interlocking unit to drive the interlocking unit to switch from the unlocked state to the locked state.

[0006] The interlocking mechanism of this switchgear constrains the operation logic of the cabinet door and the circuit breaker through a mechanical structure, so that when the cabinet door is in the detached state, the closed circuit breaker is locked in the closed state, which helps to ensure the personal safety of operation and maintenance personnel.

[0007] In another illustrative embodiment of the interlocking mechanism of the switchgear, the interlocking unit includes a door linkage and a stop member. The door linkage can move between a first position and a second position in a straight line relative to the support body. The cabinet door in the closed state can stop the door linkage located in the first position to prevent the door linkage from moving to the second position. The stop member can rotate between a stop position and a release position relative to the support body, and the rotation axis of the stop member is perpendicular to the movement direction of the door linkage. The stop member in the stop position can stop the closing locking member located in the closing locking position to prevent the closing locking member from moving to the closing unlock position. The stop member has a first sliding hole, and the door linkage has a first sliding shaft, which is inserted into the first sliding hole and can slide in the first sliding hole. During the process of the door linkage moving from the first position to the second position, the first sliding shaft and the first sliding hole cooperate to drive the stop member from the release position to the stop position, thereby realizing the switching of the interlocking unit from the unlocked state to the locked state. This structure is simple, saves space, and has good stability.

[0008] In another illustrative embodiment of the interlocking mechanism of the switchgear, the closing locking member is rotatably mounted on the support body, and the rotation axis of the closing locking member is parallel to the rotation axis of the abutment member. The abutment member in the released position avoids the movement path of the closing locking member. The rotatably mounted closing locking member facilitates operation.

[0009] In another illustrative embodiment of the interlocking mechanism of the switchgear, the interlocking mechanism further includes a transmission member, a door locking member, and a connecting rod. The transmission member can move relative to the support body in a straight line between the third and fourth positions, and the direction of movement is perpendicular to the rotation axis of the closing locking member. The transmission member has a transmission hole, through which the closing locking member passes. During the process of the closing locking member moving from the closing unlock position to the closing locked position, the closing locking member can push against the wall of the transmission hole, thereby driving the transmission member to move from the third position to the fourth position. The door locking member can rotate relative to the support body between the door locking position and the door unlock position. The door locking member located in the door locking position can abut against the cabinet door in the closed state to prevent the cabinet door from being detached from the support body. One end of the connecting rod is rotatably connected to the door locking member. The other end of the connecting rod has a second sliding hole, and the transmission member has a second sliding shaft, which is inserted into the second sliding hole and can slide in the second sliding hole. During the process of the transmission member moving from the third position to the fourth position, the transmission member can drive the door locking member to move from the door locking position to the door unlock position via the connecting rod. Therefore, the cabinet door can only be removed after the closing locking component is rotated from the closing unlock position to the closing locking position, allowing the abutment component to rotate to the abutment position. This helps ensure the reliability of the closing lock.

[0010] In another illustrative embodiment of the interlocking mechanism of the switchgear, the interlocking mechanism further includes a first bracket. The first bracket is fixedly disposed relative to the support body. A closing locking member is rotatably connected to the first bracket and has a first limiting portion. The first bracket has a first limiting hole. The first limiting portion passes through the first limiting hole to limit the rotation range of the closing locking member. This helps to improve the stability of the mechanism.

[0011] In another illustrative embodiment of the interlocking mechanism of the switchgear, the interlocking mechanism further includes a second bracket. The second bracket is fixedly disposed relative to the support body. A door locking element is rotatably connected to the second bracket. A connecting rod is rotatably connected to the door locking element via a shaft. The second bracket has a second limiting hole. The shaft passes through the second limiting hole to limit the rotation range of the door locking element. This helps to improve the stability of the mechanism.

[0012] In another illustrative embodiment of the interlocking mechanism of the switchgear, the second bracket has an opening. A door lock is inserted into the opening. When the door lock is rotated from the unlocked position to the locked position in the locking direction, it engages with the edge of the opening. The door lock has a contact end for abutting against the cabinet door. The contact end is configured such that when the door lock is in the locked position, the cabinet door, which is about to be disengaged, can abut against the contact end and apply torque in the locking direction to the door lock. This avoids forcibly disengaging the cabinet door before locking the circuit breaker in the closed state, thus improving safety.

[0013] In another illustrative embodiment of the interlocking mechanism of the switchgear, a groove is recessed on the edge of the door locking member. During the rotation of the door locking member from the unlocked position to the locked position along the locking direction, the groove and the edge of the opening interlock, and they lock together when the door locking member reaches the locked position. The groove facilitates positioning during assembly.

[0014] In another illustrative embodiment of the interlocking mechanism of the switchgear, the interlocking mechanism further includes a reset elastic element. The reset elastic element can apply an elastic restoring force to the closing locking element to drive the closing locking element from the closing locked position to the closing unlocked position. This facilitates the automatic reset of the closing locking element.

[0015] In another illustrative embodiment of the interlocking mechanism of the switchgear, the supporting body has a latching edge. The cabinet door can latch onto the latching edge in the latching direction to reach a closed state. The movement direction of the door linkage is parallel to the latching direction. The door linkage has a trigger cantilever extending in the opposite direction of the latching direction. The latching edge forms a through hole extending in the latching direction. The trigger cantilever is inserted into the through hole. This structure is simple and helps to improve stability.

[0016] The present invention also provides a switch cabinet including the interlocking mechanism of the aforementioned switch cabinet. This interlocking mechanism, through a mechanical structure, constrains the operation logic of the cabinet door and the circuit breaker, ensuring that when the cabinet door is in the detached state, the closed circuit breaker is locked in the closed state, thus protecting the personal safety of maintenance personnel. Attached Figure Description

[0017] The following figures are for illustrative purposes only and do not limit the scope of the invention.

[0018] Figure 1 This is a schematic diagram illustrating one embodiment of the interlocking mechanism of a switchgear.

[0019] Figure 2 for Figure 1 The diagram shows the changing states of the interlocking mechanism of the switchgear.

[0020] Figure 3 This is a schematic diagram illustrating the mechanism by which the closing locking element locks the circuit breaker in the closed state.

[0021] Figure 4 This is a schematic diagram illustrating another embodiment of the interlocking mechanism of the switchgear.

[0022] Figure 5 for Figure 4 A partial structural diagram of the interlocking mechanism of the switchgear shown.

[0023] Figure 6 for Figure 4 The diagram shows the state of the interlocking mechanism of the switchgear when the closing locking element is in the closing unlocking position.

[0024] Figure 7 for Figure 4 The diagram shows the state of the interlocking mechanism of the switchgear when the closing locking element is in the closing locking position.

[0025] Figure 8 for Figure 4 The diagram shows a partial view of the interlocking mechanism of the switchgear when the door locking element is in the locked position.

[0026] Figure 9 for Figure 4 The diagram shows a partial view of the interlocking mechanism of the switchgear when the door locking element is in the unlocked position.

[0027] Label Explanation

[0028] 10 Closing Locking Components

[0029] 11 First limiting part

[0030] 20 interlocking units

[0031] 30-door linkage components

[0032] 31 First sliding shaft

[0033] 32 Trigger cantilever

[0034] 40 supporting items

[0035] 41 First sliding hole

[0036] 51 Locking elastic element

[0037] 52 Reset elastic element

[0038] 60 Transmission components

[0039] 61 Transmission Hole

[0040] 62 Second sliding shaft

[0041] 70 Door Locking Components

[0042] 71 Card Slot

[0043] 72 Contact end

[0044] 80-link

[0045] 82 Second sliding hole

[0046] 91 First stent

[0047] 911 First limiting hole

[0048] 912 Support Body

[0049] 913 Support component

[0050] 92 Second stent

[0051] 921 Second limiting hole

[0052] 922 Opening

[0053] d shaft

[0054] 100 Supporting Entities

[0055] 101 Fastening Edge

[0056] 102 Through Hole

[0057] 200 cabinet doors

[0058] 300 trip button

[0059] 400 tripping push rod

[0060] K Fastening direction

[0061] S Lock direction

[0062] L1 closing locking element rotation axis

[0063] L2 abutment rotation axis

[0064] L3 door lock axis of rotation

[0065] D1 First Direction

[0066] D2 First Direction Detailed Implementation

[0067] To provide a clearer understanding of the technical features, objectives, and effects of the invention, specific embodiments of the invention are now described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate components with the same or similar structures but the same function.

[0068] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.

[0069] In this document, terms such as "first," "second," etc., do not indicate degree of importance or order, but are used only to distinguish them from each other for the purpose of document description. Nouns and pronouns relating to persons in this patent application are not limited to specific genders.

[0070] To keep the drawings simple, each drawing only schematically shows the parts related to the present invention, and they do not represent the actual structure of the product.

[0071] Figure 1 This is a schematic diagram illustrating one embodiment of the interlocking mechanism of a switchgear. Figure 2 for Figure 1 The diagram shows the changing states of the interlocking mechanism of the switchgear. Figure 1 As shown, the switch cabinet includes a support body 100 and a cabinet door 200. The cabinet door 200 can close onto the support body 100 to reach a closed state. Figure 1 The cabinet door 200 is in the closed state. Specifically, in this illustrative embodiment, the cabinet door 200 can, for example, be fastened to the fastening edge 101 of the support body 100 along the fastening direction K to reach the closed state. It can be understood that this fastening action is, for example, only the final step of covering the cabinet door 200 with the support body 100. During the closing process, the movement of the cabinet door 200 is, for example, first to the left and then downward along the fastening direction K, but it is not limited to this. When it is necessary to remove the cabinet door 200 from the support body 100, it is necessary to first move the cabinet door 200 upward in the opposite direction of the fastening direction K, and then move the cabinet door 200 to the right to remove the cabinet door 200.

[0072] like Figure 1 As shown, the interlocking mechanism of this illustrative embodiment includes a closing locking member 10, an interlocking unit 20, and a locking elastic member 51. The closing locking member 10 is movable relative to the support body 100. Specifically, in this illustrative embodiment, the closing locking member 10 is rotatable relative to the support body 100 about the rotation axis L1, and switches between a closing locked position and a closing unlocked position. Figure 1 The closing locking component 10 is in the closing unlocking position. Figure 2 The closing locking member 10 is located in the closing locked position. The rotating closing locking member 10 facilitates operation. However, it is not limited to this; in other illustrative embodiments, the movement of the closing locking member 10 can also be linear.

[0073] The closing locking element 10 is located at Figure 2 When the closing lock position is shown, the closing lock member 10 is used to lock the circuit breaker of the switchgear in the closed state, such as a vacuum circuit breaker of the switchgear. Figure 3 This is a schematic diagram illustrating the mechanism by which the closing locking element locks the circuit breaker in the closed state. Its viewing direction is... Figure 1 and Figure 2 On the contrary. Specifically, such as Figure 3 As shown, the switchgear also includes, for example, a trip button 300 and a trip lever 400. When the operator presses the trip button 300, the trip button 300 drives the trip lever 400 to move in the second direction D2, thereby triggering the manual tripping operation of the circuit breaker. Based on this, as... Figure 3 As shown in Figure A, when the closing locking element 10 is in the closing unlocking position, the closing locking element 10 avoids the movement path of the opening / closing push rod 400, thus not hindering the manual opening of the circuit breaker. Figure 3 As shown in Figure B, when the closing locking member 10 is in the closing locked position, the closing locking member 10 abuts against the right end of the opening push rod 400, thereby preventing the opening push rod 400 from moving along the second direction D2, blocking the manual opening of the circuit breaker, and realizing the function of locking the circuit breaker of the switchgear in the closed state. However, it is not limited to this. In other illustrative embodiments, the closing locking member 10 in the closing locked position can also lock the circuit breaker of the switchgear in the closed state in other ways.

[0074] like Figure 1 and Figure 2 As shown in this illustrative embodiment, the interlocking unit 20 includes a door linkage member 30 and a stop member 40 that are connected by a transmission. The interlocking unit 20 is mounted on the support body 100 and is operable to switch between a locked state and an unlocked state. Figure 1 Interlocking unit 20 is in the unlocked state. Figure 2 The central interlocking unit 20 is in the locked state. For example... Figure 2As shown, the interlocking unit 20 in the locked state can abut against the closing locking member 10 located in the closing locked position to prevent the closing locking member 10 from moving to the closing unlock position. Figure 1 As shown, the cabinet door 200 in the closed state can abut against the door linkage 30 of the interlocking unit 20 in the unlocked state to prevent the interlocking unit 20 from switching to the locked state.

[0075] Specifically, in this illustrative embodiment, the door linkage 30 can be positioned relative to the support body 100 along the first direction D1. Figure 1 The first movement shown is to Figure 2 The second position shown, the first direction D1, is, for example, parallel to the fastening direction K, but is not limited to this. Figure 1 As shown, the cabinet door 200 in the closed state can abut against the first door linkage 30 in the opposite direction of the first direction D1 to prevent the door linkage 30 from moving to the second position.

[0076] like Figure 1 As shown in this illustrative embodiment, the door linkage 30 has, for example, a trigger cantilever 32 extending in the opposite direction to the fastening direction K. The fastening edge 101 has a through hole 102 extending in the fastening direction K. The trigger cantilever 32 is inserted into the through hole 102. This structure is simple and has good stability.

[0077] like Figure 1 and Figure 2 As shown, the abutment 40 can rotate relative to the support body 100 around the rotation axis L2. Figure 1 The release bit shown and Figure 2 The abutment 40 rotates between the shown abutment positions. The rotation axis L2 of the abutment 40 is, for example, perpendicular to the direction of movement of the door linkage 30 and parallel to the rotation axis L1 of the closing locking member 10, but is not limited thereto. Figure 1 As shown, the abutment 40 in the release position avoids the movement path of the closing locking member 10. Figure 2 As shown, the abutting member 40 located in the abutting position can abut against the closing locking member 10 located in the closing locking position to prevent the closing locking member 10 from moving to the closing unlocking position.

[0078] like Figure 1 and Figure 2As shown, the abutment 40 has a first sliding hole 41, which extends gradually away from the rotation axis L2. The door linkage 30 has a first sliding shaft 31. The first sliding shaft 31 is inserted into the first sliding hole 41 and can slide within it. During sliding, the first sliding shaft 31 can also rotate around its own axis within the first sliding hole 41. As the door linkage 30 moves from the first position to the second position, the cooperation between the first sliding shaft 31 and the first sliding hole 41 drives the abutment 40 from the released position to the abutment position, thereby realizing the switching of the interlocking unit 20 from the unlocked state to the locked state.

[0079] The locking elastic element 51 can apply an elastic restoring force to the interlocking unit 20 to drive the interlocking unit 20 to switch from an unlocked state to a locked state. Specifically, in this illustrative embodiment, the locking elastic element 51 can apply an elastic restoring force to the door linkage 30 in the interlocking unit 20 to drive the door linkage 30 to move from the first position to the second position. Figure 1 As shown, when the cabinet door 200 is in the closed state, the door linkage 30 is held in the first position by the cabinet door 200, while the abutment member 40, which is connected to the door linkage 30, is held in the released position. The locking elastic member 51 is, for example, a tension spring, one end of which is connected to the support body 100 and the other end of which is connected to the door linkage 30, but is not limited to this.

[0080] When it is necessary to detach the cabinet door 200 from the supporting body 100, first switch the circuit breaker to the closed state to ground the feeder end, and then manually remove the closing locking piece 10 from the... Figure 1 The indicated closing / unlocking position is rotated counterclockwise to... Figure 2 The switch is locked in the position shown. Then, the cabinet door 200 is removed. The door linkage 30 is then engaged by the locking elastic element 51. Figure 1 The first movement shown is to Figure 2 The second position shown simultaneously drives the abutment component 40 from... Figure 1 The release position shown is rotated to Figure 2 The shown is the abutment position. At this time, the closing locking element 10 is locked in the closing locking position by the abutment element 40 and cannot return. Figure 1 The circuit breaker is locked in the closed state by the shown closing unlocking position. In the prior art, a manual padlock is typically used to lock the closing locking element 10 in the closed locked position. However, manual padlocking relies on the operator's subjective awareness, which may result in omissions, causing the circuit breaker to not actually be locked in the closed state as planned, posing a safety hazard. The interlocking mechanism of this illustrative embodiment can automatically lock the closing locking element 10 in the closed locked position after the cabinet door 200 is removed, without relying on the operator's subjective awareness, thus avoiding the safety hazard caused by omissions in manual padlocking.

[0081] When the cabinet door 200 is re-closed to the supporting body 100, the door linkage 30 is engaged by the cabinet door 200. Figure 2 The second position shown moves to Figure 1 The first one shown simultaneously drives the abutment component 40 from... Figure 2 The abutment position shown is rotated to Figure 1 The release position is shown. At this time, the closing locking element 10 can return to its original position. Figure 1 The indicated closing unlock position releases the lock on the circuit breaker closing.

[0082] The interlocking mechanism of this switchgear constrains the operation logic of the cabinet door and the circuit breaker through a mechanical structure, so that when the cabinet door is in the detached state, the closed circuit breaker is locked in the closed state, which helps to ensure the personal safety of operation and maintenance personnel.

[0083] Furthermore, the interlocking mechanism of this switchgear does not alter the original interlocking logic and structural integrity of the switchgear, allowing for immediate use and high compatibility. Simultaneously, it employs a purely mechanical interlocking system, eliminating the need for electrical components such as electromagnets, simplifying the structure and reducing overall cost and maintenance complexity.

[0084] The interlocking unit of this illustrative embodiment has a simple structure, saves space, and has good stability, but it is not limited to this. In other illustrative embodiments, the interlocking unit 20 may also have other structures, and is not limited to those described above.

[0085] In other illustrative embodiments, the door linkage 30 is also mechanically interlocked with the disconnecting switch of the switchgear via a transmission structure.

[0086] like Figure 1 and Figure 2 As shown in this illustrative embodiment, the interlocking mechanism further includes a reset elastic element 52. The reset elastic element 52 can apply an elastic restoring force to the closing locking element 10 to drive the closing locking element 10 from the closing locked position to the closing unlocked position. This facilitates the automatic reset of the closing locking element 10. The reset elastic element 52 is, for example, a tension spring, with one end connected to the support body 100 and the other end connected to the closing locking element 10, but is not limited to this.

[0087] Figure 4 This is a schematic diagram illustrating another embodiment of the interlocking mechanism of the switchgear. Figure 5 for Figure 4 A partial structural diagram of the interlocking mechanism of the switchgear shown. Figures 6 to 9 For illustrative purposes Figure 4 The schematic diagram shown illustrates the working mechanism of the interlocking mechanism in the switchgear, only showing a portion of the mechanism's structure. The interlocking mechanism of this illustrative embodiment... Figure 1The similarities and differences between the interlocking mechanisms shown will not be repeated here; the differences are described below. The interlocking mechanism of this illustrative embodiment also includes a locking elastic element 51 and a reset elastic element 52. Figure 4 and Figure 5 It is not shown in the drawing.

[0088] like Figure 4 and Figure 5 As shown in this illustrative embodiment, the interlocking mechanism further includes a first bracket 91 and a second bracket 92. For ease of structural identification, Figure 4 and Figure 5 The first bracket 91 and the second bracket 92 are both drawn with dashed lines. The first bracket 91 and the second bracket 92 are fixedly installed relative to the main support body of the switchgear. The closing locking member 10 and the abutment member 40 are rotatably connected to the first bracket 91, and the door linkage member 30 is movably connected to the second bracket 92.

[0089] like Figure 4 and Figure 5 As shown, in this illustrative embodiment, the interlocking mechanism further includes a transmission member 60, a door locking member 70, and a connecting rod 80. The transmission member 60 is movably connected to the first bracket 91 along a first direction D1 and in the opposite direction of the first direction D1. Figure 5 As shown, the transmission component 60 has a transmission hole 61. The closing locking component 10 passes through the transmission hole 61. Figure 6 and Figure 7 As shown, the closing locking element 10 is composed of... Figure 6 The indicated closing / unlocking position has moved to... Figure 7 During the closing and locking process shown, the closing locking component 10 can push against the wall of the transmission hole 61, thereby driving the transmission component 60 from the position shown. Figure 6 The third position shown moves along the first direction D1 to... Figure 7 The fourth position shown.

[0090] like Figure 4 and Figure 5 As shown, the door locking member 70 is rotatably connected to the second bracket 92 about the rotation axis L3, which is, for example, perpendicular to the first direction D1 and the rotation axis L1 of the closing locking member 10.

[0091] like Figure 4 and Figure 5 As shown, one end of the connecting rod 80 is rotatably connected to the door locking member 70 about the rotation axis L4, which is parallel to the rotation axis L3. The other end of the connecting rod 80 is connected to the transmission member 60. Specifically, as... Figure 8 and Figure 9As shown, the connecting rod 80 has a second sliding hole 82, which extends gradually away from the rotation axis L4. The transmission member 60 has a second sliding shaft 62, which is inserted into and can slide within the second sliding hole 82. During sliding, the second sliding shaft 62 can also rotate within the second sliding hole 82, for example, about its own axis. The transmission member 60 is composed of... Figure 6 and Figure 8 The third position shown moves to Figure 7 and Figure 9 During the fourth process shown, the transmission component 60 can drive the door locking component 70 via the connecting rod 80. Figure 6 and Figure 8 The door lock position shown has moved to the indicated position. Figure 7 and Figure 9 The door unlock position is shown. Figure 6 and Figure 8 As shown, the door locking member 70, located in the door locking position, can abut against the cabinet door 200 in the closed state to prevent the cabinet door 200 from being detached from the support body 100 in the opposite direction of the latching direction K. During the process of the cabinet door 200 detaching from the support body 100, it needs to move a stroke in the opposite direction of the latching direction K. Only when the door locking member 70 is in the door unlocking position does the cabinet door 200 have enough space to complete this stroke. Therefore, the cabinet door 200 can only be detached after the closing locking member 10 is rotated from the closing unlocking position to the closing locking position, allowing the abutment member 40 to rotate to the abutment position. This helps ensure the reliability of the closing lock.

[0092] When it is necessary to detach the cabinet door 200 from the supporting body 100, first switch the circuit breaker to the closed state to ground the feeder end, and then manually remove the closing locking piece 10 from the... Figure 6 The indicated closing / unlocking position is rotated counterclockwise to... Figure 7 As shown in the closing locking position, during the process, the closing locking component 10 drives the door locking component 70 via the transmission component 60 and the connecting rod 80. Figure 6 and Figure 8 The door lock position shown is rotated to Figure 7 and Figure 9 The door unlock position shown unlocks the cabinet door 200. Then, the cabinet door 200 is removed, and the door linkage 30, under the action of the locking elastic element 51, is released. Figure 6 The first movement shown is to Figure 7 The second position shown simultaneously drives the abutment component 40 from... Figure 6 The release position shown is rotated to Figure 7 The shown is the abutment position. At this time, the closing locking element 10 is locked in the closing locking position by the abutment element 40 and cannot return. Figure 6 The indicated closing / unlocking position locks the circuit breaker in the closed state.

[0093] When the cabinet door 200 is re-closed to the supporting body 100, the door linkage 30 is engaged by the cabinet door 200. Figure 7 The second position shown moves to Figure 6 The first one shown simultaneously drives the abutment component 40 from... Figure 7 The abutment position shown is rotated to Figure 6 The release position is shown. The closing locking element 10 returns to its original position under the action of the reset elastic element 52. Figure 6 The shown closing unlock position releases the lock on the circuit breaker closing. During the process of the closing locking component 10 returning to the closing unlock position, the door locking component 70 is driven from the door unlock position back to the door locking position through the transmission component 60 and the connecting rod 80, locking the cabinet door 200 that has been closed again, preventing the cabinet door 200 from being removed.

[0094] like Figure 4 As shown in the schematic embodiment, the closing locking member 10 has a first limiting portion 11. The first bracket 91 has a first limiting hole 911. The first limiting portion 11 passes through the first limiting hole 911 to limit the rotation range of the closing locking member 10. For example, the closing locking member 10 can be locked in the closing / unlocking position by abutting against the wall of the first limiting hole 911 under the action of the reset elastic member 52. This helps to improve the stability of the mechanism.

[0095] like Figure 4 As shown in the schematic embodiment, the connecting rod 80 and the door locking member 70 are rotatably connected via the shaft d. The second bracket 92 has a second limiting hole 921. The shaft d passes through the second limiting hole 921 to limit the rotation range of the door locking member 70. This helps to improve the stability of the mechanism.

[0096] like Figure 5 , Figure 8 and Figure 9 As shown, in the schematic embodiment, the second bracket 92 has an opening 922. A door lock 70 is inserted into the opening 922. The door lock 70 is... Figure 9 The door unlock position shown is rotated in the locking direction S to... Figure 8 When the door is locked, it engages with the edge of the opening 922. Specifically, in this illustrative embodiment, the edge of the door locking member 70 is recessed with a groove 71. When the door locking member 70 is... Figure 9 The door unlock position shown is rotated in the locking direction S to... Figure 8 During the door locking process shown, the slot 71 and the edge of the opening 922 interlock and lock together when the door locking member 70 reaches the door locking position. The slot 71 facilitates positioning during assembly.

[0097] like Figure 8 and Figure 9As shown, the door locking member 70 has a contact end 72 for abutting against the cabinet door 200. The contact end 72 is configured such that when the door locking member 70 is in the locked position, the cabinet door 200, which is to be disassembled in the opposite direction of the engagement direction K, can abut against the contact end 72, and a torque in the locking direction S is applied to the door locking member 70. At this time, since the door locking member 70 is already engaged with the edge of the opening 922 of the second bracket 92 in the locking direction S, the abutment of the cabinet door 200 locks the door locking member 70 in the locked position, preventing the cabinet door 200 from being disassembled. This avoids forcibly disassembling the cabinet door before locking the circuit breaker in the closed state, thus improving safety.

[0098] In an illustrative embodiment, the first support 91 is, for example, composed of a combination of multiple components. Specifically, such as... Figure 4 As shown, the first bracket 91 includes, for example, a bracket body 912 and a support member 913, which are connected to each other, for example, by screws and spring washers. The abutment member 40 is hinged to the support member 913, for example, by rivets and a sleeve fitted on the outside of the rivets.

[0099] In other illustrative embodiments, the first sliding shaft 31 may include, for example, a rivet and a sleeve fitted over the outside of the rivet.

[0100] To facilitate understanding, specific examples will be used below to illustrate this. Figures 1 to 9 The motion state of each component.

[0101] When it is necessary to remove the cabinet door 200 of the switchgear, the staff must first operate to ensure that the circuit breaker inside the switchgear is in the closed state.

[0102] Next, the operator can manually move the closing locking component 10 from... Figure 1 / Figure 6 The "close / unlock position" shown is rotated counterclockwise to... Figure 2 / Figure 7 The "closing lock position" is shown. Since the closing lock member 10 passes through the transmission hole 61 of the transmission member 60 via its own structure, when the closing lock member 10 rotates, it pushes against the wall of the transmission hole 61. This pushing force causes the transmission member 60 to move along the first direction D1 from... Figure 6 The "third position" shown moves upwards to Figure 7 The fourth position is shown. The movement of the transmission component 60 is further driven by the cooperation between its second sliding shaft 62 and the second sliding hole 82 on the connecting rod 80. One end of the connecting rod 80 is rotatably connected to the door locking component 70 through the shaft d, so the movement of the connecting rod 80 will drive the door locking component 70 to rotate around its rotation axis L3. Figure 8 The "door lock position" shown is rotated to Figure 9The "door unlocked position" is shown. At this time, the door locking component 70 no longer abuts against the cabinet door 200, thereby releasing the lock on the cabinet door 200 and allowing the cabinet door to be removed.

[0103] After the door lock 70 is in the "door unlocked position", the staff can safely remove the cabinet door 200 from the support body 100.

[0104] During the removal of cabinet door 200, the previous abutment action of cabinet door 200 against door linkage 30, specifically triggering cantilever 32, disappears. At this time, locking elastic element 51, such as a tension spring, will immediately drive door linkage 30 along the first direction D1 by applying an elastic restoring force to door linkage 30. Figure 1 / Figure 6 The "first" position shown moves upwards to... Figure 2 / Figure 7 The "second position" is shown. The movement of the door linkage 30 is achieved through the engagement of its first sliding shaft 31 with the first sliding hole 41 on the abutment 40, causing the abutment 40 to rotate around its axis of rotation L2. Figure 1 / Figure 6 The "release position" shown is rotated to Figure 2 / Figure 7 The "Abutting Position" is shown. In the "Abutting Position," the abutting component 40 abuts against the closing locking component 10, which is already in the "Close Locking Position," thereby preventing the closing locking component 10 from moving to the "Close Unlocking Position." In this way, the circuit breaker is mechanically locked in the closed state, and even if someone accidentally operates it, it cannot be opened, greatly improving operation and maintenance safety.

[0105] If the switch cabinet door 200 needs to be reinstalled, the interlocking mechanism will move in the opposite direction to achieve automatic reset and relocking.

[0106] The worker reattaches the cabinet door 200 onto the supporting body 100. When the cabinet door 200 is properly closed, it abuts against the door linkage 30, specifically triggering the cantilever 32. The abutting force of the cabinet door 200 pushes the door linkage 30 downwards in the opposite direction of the first direction D1. Figure 2 / Figure 7 The "second position" movement shown returns to Figure 1 / Figure 6 The "first one" shown. The movement of the door linkage 30 is achieved through the cooperation between its first sliding shaft 31 and the first sliding hole 41 on the abutment 40, causing the abutment 40 to rotate around its rotation axis L2. Figure 2 / Figure 7 The "stop position" shown rotates back. Figure 1 / Figure 6 The "Release Position" is shown. At this time, the abutment 40 no longer abuts against the closing locking element 10, releasing the locking of the closing locking element 10.

[0107] Since the abutment 40 has rotated to the "release position," the closing locking element 10 is no longer locked. The reset elastic element 52, such as a tension spring, will immediately drive the closing locking element 10 out of the "release position" by applying an elastic restoring force to it. Figure 2 / Figure 7 The "closing lock position" shown is rotated clockwise back to the starting position. Figure 1 / Figure 6 The "close unlock position" is shown.

[0108] When the closing locking element 10 returns to the "closing unlock position", it will be linked in the opposite direction through the transmission element 60 and the connecting rod 80. Specifically, the movement of the closing locking element 10 will cause the transmission element 60 to move downward in the opposite direction of the first direction D1. Figure 7 The "fourth position" movement shown returns to Figure 6 The "third position" is shown. The movement of the transmission component 60, through the cooperation of the second sliding shaft 62 and the second sliding hole 82, drives the connecting rod 80 to move. The connecting rod 80 then drives the door locking component 70 to rotate around its axis of rotation L3. Figure 9 The "door unlock position" shown rotates back to its original position. Figure 8 The door is shown in the "door locked position". In the "door locked position", the door locking device 70 will relock the closed cabinet door 200 to prevent the cabinet door 200 from being removed if the circuit breaker is not closed.

[0109] In this way, through this series of precise mechanical linkages, the interlocking mechanism achieves mandatory constraints on the operation logic of the cabinet door and the circuit breaker, greatly improving the safety of switchgear operation and avoiding risks caused by human negligence.

[0110] The present invention also provides a switch cabinet, which, in an illustrative embodiment, includes the interlocking mechanism of any of the switch cabinets described above. This interlocking mechanism, through a mechanical structure, constrains the operation logic of the cabinet door and the circuit breaker, ensuring that when the cabinet door is in the detached state, the closed circuit breaker is locked in the closed state, thus facilitating the protection of the personal safety of maintenance personnel.

[0111] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0112] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent implementation schemes or modifications made without departing from the spirit of the present invention, such as combinations, divisions or repetitions of features, should be included within the scope of protection of the present invention.

Claims

1. An interlocking mechanism for a switchgear, the switchgear comprising a support body (100) and a cabinet door (200), the cabinet door (200) being capable of closing onto the support body (100) to reach a closed state, characterized in that, The interlocking mechanism includes: The closing locking member (10) is movable relative to the support body (100) between the closing locking position and the closing unlocking position. When it is in the closing locking position, the closing locking member (10) is used to lock the circuit breaker of the switch cabinet in the closed state. An interlocking unit (20), installed on the support body (100), is operable to switch between a locked state and an unlocked state. In the locked state, the interlocking unit (20) abuts against the closing locking member (10) located in the closing locked position to prevent the closing locking member (10) from moving towards the closing unlocked position. In the closed state, the cabinet door (200) abuts against the interlocking unit (20) in the unlocked state to prevent the interlocking unit (20) from switching to the locked state. A locking elastic element (51) is capable of applying an elastic restoring force to the interlocking unit (20) to drive the interlocking unit (20) to switch from the unlocked state to the locked state.

2. The interlocking mechanism of the switchgear as described in claim 1, characterized in that, The interlocking unit (20) includes: A door linkage (30) is movable relative to the support body (100) in a straight line between a first position and a second position. The cabinet door (200) in the closed state can abut against the door linkage (30) located in the first position to prevent the door linkage (30) from moving to the second position. The abutment (40) is rotatable relative to the support body (100) between the abutment position and the release position, and the rotation axis (L2) of the abutment (40) is perpendicular to the movement direction of the door linkage (30). The abutment (40) located in the abutment position can abut against the closing locking member (10) located in the closing locking position to prevent the closing locking member (10) from moving to the closing unlocking position. The abutment (40) has a first sliding hole (41), and the door linkage (30) has a first sliding shaft (31). The first sliding shaft (31) is inserted into the first sliding hole (41) and can slide in the first sliding hole (41). During the process of the door linkage (30) moving from the first position to the second position, the first sliding shaft (31) and the first sliding hole (41) cooperate to drive the abutment (40) to move from the release position to the abutment position, thereby realizing the switching of the interlocking unit (20) from the unlocked state to the locked state.

3. The interlocking mechanism of the switchgear as described in claim 2, characterized in that, The closing locking member (10) is rotatably disposed on the support body (100), and the rotation axis (L1) of the closing locking member (10) is parallel to the rotation axis (L2) of the abutment member (40). The abutment member (40) in the release position avoids the movement path of the closing locking member (10).

4. The interlocking mechanism of the switchgear as described in claim 3, characterized in that, The interlocking mechanism also includes: The transmission component (60) can move relative to the support body (100) in a straight line between the third and fourth positions, and the direction of movement is perpendicular to the rotation axis (L1) of the closing locking component (10). The transmission component (60) has a transmission hole (61), and the closing locking component (10) passes through the transmission hole (61). During the process of the closing locking component (10) moving from the closing unlock position to the closing lock position, the closing locking component (10) can push against the hole wall of the transmission hole (61), thereby driving the transmission component (60) to move from the third position to the fourth position. A door locking element (70) is rotatable relative to the support body (100) between a locked position and a unlocked position. The door locking element (70) in the locked position abuts against the cabinet door (200) in the closed state to prevent the cabinet door (200) from detaching from the support body (100); and A connecting rod (80) is rotatably connected at one end to the door locking member (70), and the other end of the connecting rod (80) has a second sliding hole (82). The transmission member (60) has a second sliding shaft (62), which is inserted into the second sliding hole (82) and can slide in the second sliding hole (82). During the process of the transmission member (60) moving from the third position to the fourth position, the transmission member (60) can drive the door locking member (70) to move from the door locking position to the door unlocking position through the connecting rod (80).

5. The interlocking mechanism of the switchgear as described in claim 1, characterized in that, The interlocking mechanism further includes a first bracket (91), which is fixedly disposed relative to the support body (100). The closing locking member (10) is rotatably connected to the first bracket (91) and has a first limiting part (11). The first bracket (91) has a first limiting hole (911), and the first limiting part (11) passes through the first limiting hole (911) to limit the rotation range of the closing locking member (10) through the first limiting hole (911).

6. The interlocking mechanism of the switchgear as described in claim 4, characterized in that, The interlocking mechanism further includes a second bracket (92), which is fixedly disposed relative to the support body (100). The door lock (70) is rotatably connected to the second bracket (92). The connecting rod (80) is rotatably connected to the door lock (70) via a shaft (d). The second bracket (92) has a second limiting hole (921), and the shaft (d) passes through the second limiting hole (921) to limit the rotation range of the door lock (70) through the second limiting hole (921).

7. The interlocking mechanism of the switchgear as described in claim 6, characterized in that, The second bracket (92) has an opening (922), and the door lock (70) is inserted into the opening (922). When the door lock (70) is rotated from the door unlock position to the door lock position in the locking direction (S), it is locked at the edge of the opening (922). The door lock (70) has a contact end (72) for abutting against the cabinet door (200). The contact end (72) is configured such that when the door lock (70) is in the door lock position, the cabinet door (200) which is about to perform a disassembly action can abut against the contact end (72) and apply a torque along the locking direction (S) to the door lock (70).

8. The interlocking mechanism of the switchgear as described in claim 7, characterized in that, The edge of the door lock (70) is recessed with a groove (71). During the process of the door lock (70) rotating from the door unlock position to the door lock position along the locking direction (S), the groove (71) and the edge of the opening (922) are interlocked and locked together when the door lock (70) reaches the door lock position.

9. The interlocking mechanism of the switchgear as described in claim 1, characterized in that, The interlocking mechanism further includes a reset elastic element (52), which can apply an elastic restoring force to the closing locking element (10) to drive the closing locking element (10) to move from the closing locking position to the closing unlocking position.

10. The interlocking mechanism of the switchgear as described in claim 2, wherein the supporting body (100) has a fastening edge (101), and the cabinet door (200) can be fastened to the fastening edge (101) along the fastening direction (K) to reach a closed state, characterized in that, The door linkage (30) moves in a direction parallel to the engagement direction (K). The door linkage (30) has a trigger arm (32) extending in the opposite direction to the engagement direction (K). The engagement edge (101) has a through hole (102) extending in the engagement direction (K). The trigger arm (32) is inserted into the through hole (102).

11. A switch cabinet, characterized in that, Includes the interlocking mechanism of the switchgear as described in any one of claims 1 to 10.

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