Looped network switch cabinet

Abstract

The utility model provides a looped network switch cabinet, which comprises a cabinet body, an operating mechanism, an interlocking mechanism and a lower cabinet door, and is characterized in that the operating mechanism comprises an operating shaft, the operating shaft comprises a driving part, the driving part is provided with a first bulge, and the driving part rotates along with the operating shaft; the interlocking mechanism comprises a lock rod, the lock rod is fixedly connected with a pushing part, the pushing part is provided with a second protrusion, the second protrusion is arranged below the first protrusion, and the second protrusion abuts against the first protrusion; the lock rod is connected with the lower cabinet door; the interlocking mechanism comprises an electromagnetic lock and a limiting piece, and a spring bolt is arranged on the electromagnetic lock; the limiting piece is fixed to the lock rod, a first through hole is formed in the limiting piece and arranged in the moving direction of the spring bolt, and when the spring bolt moves close to the limiting piece in the moving direction of the spring bolt, the spring bolt penetrates through the first through hole. Through the electromagnetic lock and the limiting piece, when the looped network switch cabinet is electrified, the operation shaft cannot be operated to rotate anticlockwise, so that the lower cabinet door is opened, and misoperation is prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of ring main units, specifically to a ring main switch cabinet. Background Technology

[0002] Ring mains switchgear is a type of electrical equipment responsible for opening, closing, controlling, and protecting electrical equipment in a power system. Its core components include circuit breakers, disconnect switches, operating mechanisms, and instrument transformers. Given the widespread use of ring mains switchgear in power systems and the fact that its operation directly affects the safety of operators, preventing misoperation of ring mains switchgear is of paramount importance.

[0003] An existing interlocking mechanism for electrical cabinets includes a grounding interlock component, a pull wire, a conduit, an overall assembly component, and a lower door interlock component. The lower door interlock component includes a grounding interlock plate, a grounding interlock shaft, a grounding interlock spring, a grounding interlock wire, a grounding interlock frame, a lower door interlock plate, a lower door interlock shaft, a lower door interlock spring, a lower door interlock wire, and an interlock bracket. This interlocking mechanism for electrical cabinets controls the movement of the latch via an electromagnetic lock. The latch moves a first and a second limit bracket in the assembly component, and the pull wire is moved via the first limit bracket. During operation, the lower door is locked by the latch, preventing the locking handle from operating. When unlocking, the power to the locking handle is cut off, and the interlock bracket moves downwards, disengaging from the lower door, allowing the cabinet door to be opened. However, when the first and second limit brackets move to the right with the latch and engage with the operating shaft, the rotation of the operating shaft is not affected. Therefore, this interlocking mechanism cannot completely prevent accidental operation. Utility Model Content

[0004] The purpose of this invention is to provide a ring main switch cabinet that can completely prevent misoperation.

[0005] To achieve the purpose of this utility model, the ring main switchgear provided by this utility model includes a cabinet, an operating mechanism, an interlocking mechanism, and a lower cabinet door. The operating mechanism and the interlocking mechanism are located inside the cabinet, the lower cabinet door is located at the bottom of the cabinet, and the interlocking mechanism is located on the first side of the operating mechanism. The operating mechanism includes an operating shaft, which includes a driving part. The driving part is provided with a first protrusion, and the driving part rotates with the operating shaft. The interlocking mechanism includes a locking rod, on which a pushing part is fixedly connected. The pushing part is provided with a second protrusion, which is located below the first protrusion and abuts against the first protrusion. The locking rod is connected to the lower cabinet door, and the locking rod drives the lower cabinet door to move up and down. The interlocking mechanism includes an electromagnetic lock and a limiting member. The electromagnetic lock is located on the first side of the locking rod and is provided with a locking tongue. The limiting member is fixed to the locking rod and is provided with a first through hole. The first through hole is provided along the moving direction of the locking tongue. When the locking tongue moves closer to the limiting member along the moving direction of the locking tongue, the locking tongue passes through the first through hole.

[0006] As can be seen from the above scheme, the electromagnetic lock is electrically connected to the live display of the ring main unit. When the ring main unit is energized, the electromagnetic lock is locked, the latch extends, and the latch moves towards the limiting member along the latch's movement direction and passes through the first through hole. At this time, the latch limits the limiting member. Since the limiting member is fixedly connected to the locking rod, the locking rod cannot move up or down. Because the second protrusion abuts against the first protrusion, the operating shaft cannot rotate counterclockwise to move the locking rod up or down, thus preventing the lower cabinet door from moving. When the ring main unit is de-energized, the electromagnetic lock is unlocked, and the latch moves towards the electromagnetic lock. At this time, the latch is not connected to the limiting member, and the locking rod can move freely. At this time, the operator can use the operating handle to rotate the operating shaft counterclockwise, thereby driving the first protrusion downward, which in turn drives the second protrusion downward, which in turn drives the locking rod downward, thus causing the lower cabinet door to move downward and open the lower cabinet door. Through the setting of the electromagnetic lock and the limiting member, the operating shaft cannot be rotated counterclockwise to open the lower cabinet door, thus preventing accidental operation.

[0007] In a further embodiment, the limiting component includes a first bend, a second bend, a third bend, and a fourth bend arranged sequentially; the first bend is located close to the electromagnetic lock, and the fourth bend is fixed to the lock rod.

[0008] In a further embodiment, the first bend and the third bend are arranged in parallel, the second bend and the fourth bend are arranged in parallel, the first bend, the second bend and the third bend form a limiting space, and the fourth bend extends toward the locking rod and is fixed to the locking rod.

[0009] Therefore, when the latch extends, it passes through the limiting member and reaches the limiting space, thereby restricting the up and down movement of the limiting member.

[0010] In a further embodiment, the first through hole is located on the first bend.

[0011] Therefore, since the first through hole is located on the first bend, the locking tongue can pass through to restrict the limiting member.

[0012] In a further embodiment, the lower end of the locking rod is provided with a first limiting plate and a second limiting plate, and a central shaft is connected between the first limiting plate and the second limiting plate.

[0013] Therefore, it can be seen that the lower cabinet door is connected by the first limiting plate and the second limiting plate.

[0014] In a further design, the lower cabinet door has a fifth bend, and the fifth bend has a second through hole through which the locking rod passes.

[0015] In a further embodiment, the fifth bend is positioned between the first limiting plate and the second limiting plate, with the central shaft passing through the fifth bend.

[0016] As can be seen, the fifth bend is limited between the first and second limiting plates, so that the locking rod can drive the fifth bend to move, thereby driving the lower cabinet door to move.

[0017] In a further embodiment, the radius of the second through hole is smaller than the radius of the first limiting plate and the radius of the second limiting plate.

[0018] Therefore, the radius of the second through hole, the radius of the first limiting plate, and the radius of the second limiting plate are necessary for the first and second limiting plates to move the lower cabinet door. Attached Figure Description

[0019] Figure 1 This is a structural diagram of an embodiment of the ring network switchgear of this utility model.

[0020] Figure 2 yes Figure 1 A magnified view of point A.

[0021] Figure 3 This is a structural diagram of the operating structure, locking rod, and pushing part of an embodiment of the ring network switchgear of this utility model.

[0022] Figure 4 This is a cross-sectional view of an embodiment of the ring network switchgear of this utility model.

[0023] Figure 5 yes Figure 4 Enlarged view of point B.

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0025] This utility model provides a ring main unit switchgear, in which an electromagnetic lock is installed. The electromagnetic lock is electrically connected to the switchgear's energized display. When the switchgear is energized, the electromagnetic lock engages, the latch extends, and the counterclockwise rotation of the operating shaft prevents the lower cabinet door from moving. When the switchgear is de-energized, the electromagnetic lock unlocks, the latch retracts, and the counterclockwise rotation of the operating shaft moves the lower cabinet door. This utility model prevents accidental operation through the electromagnetic lock and limiting device.

[0026] See Figure 1 The ring main unit in this embodiment includes a cabinet 1, an operating mechanism 3, an interlocking mechanism, a lower cabinet door 2, and a live indicator 6. The operating mechanism 3, the interlocking mechanism, and the live indicator 6 are located inside the cabinet 1. The live indicator 6 is located on the upper side inside the cabinet 1, and the operating mechanism 3 and the interlocking mechanism are located on the lower side inside the cabinet 1. The lower cabinet door 2 is located at the bottom of the cabinet 1, and the interlocking mechanism is located on the first side of the operating mechanism 3.

[0027] See Figure 3 The operating mechanism 3 includes an operating shaft 31, which includes a driving part 32. The driving part has a first protrusion 321 and rotates with the operating shaft 31. The interlocking mechanism includes a locking rod 51, on which a pushing part 52 is fixedly connected. The pushing part 52 has a second protrusion 521, which is located below the first protrusion 321 and abuts against it. Specifically, the pushing part 52 is fixed to the locking rod 51 by a first screw 55. The locking rod 51 is connected to the lower cabinet door 2 and moves the lower cabinet door 2 up and down. This causes the operating shaft 31 to rotate counterclockwise, thereby moving the pushing part 52, which in turn moves the first protrusion 321 downward, and the second protrusion 521 of the pushing part 52 downward. Since the pushing part 52 is fixed to the locking rod 51, it moves the locking rod 51 downward, thus causing the lower cabinet door 2 to move downward and open.

[0028] See Figure 1 and Figure 2 The interlocking mechanism includes an electromagnetic lock 4 and a limiting member 42. The electromagnetic lock 4 is located on the first side of the locking rod 51 and has a locking tongue 41. The limiting member 42 is fixed on the locking rod 51 and has a first through hole 421. The first through hole 421 is located along the moving direction of the locking tongue 41. When the locking tongue 41 moves close to the limiting member 42 along the moving direction of the locking tongue 41, the locking tongue 41 passes through the first through hole 421.

[0029] Specifically, the limiting member 421 includes a first bent portion 4221, a second bent portion 4222, a third bent portion 4223, and a fourth bent portion 4224 arranged sequentially; the first bent portion 4221 is disposed near the electromagnetic lock 4, and the fourth bent portion 4224 is fixed on the locking rod 51. Specifically, the first bent portion 4221 is disposed facing the locking tongue.

[0030] The first bend 4221 and the third bend 4223 are arranged parallel to each other, and the second bend 4222 and the fourth bend 4224 are arranged parallel to each other. The first bend 4221, the second bend 4222, and the third bend 4223 form a limiting space, and the fourth bend 4224 extends toward the locking rod 51 and is fixed to the locking rod. Specifically, the fourth bend 4224 is fixed to the locking rod 51 by a first screw 55. A first through hole 421 is provided on the first bend 4221. When the latch 41 extends, it passes through the limiting member 42 and reaches the limiting space, thereby restricting the up and down movement of the limiting member 42.

[0031] When the latch 41 extends through the first through hole 421, the limiting member 42 cannot move up or down, the locking rod 51 cannot move up or down, and the operating shaft 31 cannot rotate counterclockwise to make the locking rod 51 move up or down, thus causing the lower cabinet door 2 to move.

[0032] See Figure 3 The lower end of the locking rod 51 is provided with a first limiting plate 531 and a second limiting plate 533. A central shaft 532 is connected between the first limiting plate 531 and the second limiting plate 533, and the lower cabinet door 2 is connected through the first limiting plate 531 and the second limiting plate 533.

[0033] See Figure 4 and Figure 5 The lower cabinet door 2 has a fifth bend 21, which has a second through hole (not shown in the figure). The locking rod 51 passes through the second through hole. The fifth bend 21 is located between the first limiting plate 531 and the second limiting plate 533, and the central shaft 532 passes through the fifth bend 21. The radius of the second through hole is smaller than the radius of the first limiting plate 531 and the second limiting plate 533, so that the first limiting plate 531 and the second limiting plate 533 drive the fifth bend 21 to move, thereby driving the lower cabinet door 2 to move.

[0034] In this embodiment, the electromagnetic lock 4 is electrically connected to the live display 6 of the ring network switchgear. When the ring network switchgear is energized, the electromagnetic lock 4 locks, the latch 41 extends, and the latch 41 moves towards the limiting member 42 along the moving direction of the latch 41, passing through the first through hole 421. Since the limiting member 42 is fixedly connected to the locking rod 51, the locking rod 51 cannot move up or down. Since the second protrusion 321 abuts against the first protrusion 521, when the locking rod 51 cannot move up or down, the operating shaft 31 cannot rotate counterclockwise to make the locking rod 51 move up or down, thereby causing the lower cabinet door 2 to move. When the ring main unit is de-energized, the electromagnetic lock 4 unlocks, the latch 41 retracts, and the latch 41 moves closer to the electromagnetic lock 4. At this time, the latch 41 is not connected to the limit member 42, and the locking rod 51 can move freely. The operator can then use the operating handle to rotate the operating shaft 31 counterclockwise, thereby causing the first protrusion 321 to move downwards, which in turn causes the second protrusion 521 to move downwards, thus causing the locking rod 51 to move downwards, thereby causing the lower cabinet door 2 to move downwards and open. Through the design of the electromagnetic lock 4 and the limit member 42, the operating shaft 31 cannot be rotated counterclockwise to open the lower cabinet door 2, thus preventing accidental operation of the ring main unit.

[0035] The above is only a preferred embodiment of the present utility model, but the design concept of the utility model is not limited thereto. Without departing from the concept of the present utility model, more other equivalent embodiments may be included. Those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the protection scope of the present utility model.

Claims

1. A ring network switch cabinet, comprising a cabinet body, an operating mechanism, an interlocking mechanism and a lower cabinet door, the operating mechanism and the interlocking mechanism are arranged inside the cabinet body, the lower cabinet door is arranged below the cabinet body, and the interlocking mechanism is arranged on the first side of the operating mechanism. The operating mechanism comprises an operating shaft, the operating shaft comprises a driving part, the driving part is provided with a first protrusion, and the driving part rotates along the driving part; The interlocking mechanism comprises a lock rod, the lock rod is fixed with a pushing part, the pushing part is provided with a second protrusion, the second protrusion is arranged below the first protrusion, and the second protrusion abuts against the first protrusion; The lock rod is connected with the lower cabinet door, and the lock rod drives the lower cabinet door to move up and down; Characterized in that: The interlocking mechanism comprises an electromagnetic lock and a limiting piece, the electromagnetic lock is arranged on the first side of the lock rod, and a lock tongue is arranged on the electromagnetic lock; The limiting piece is fixed on the lock rod, a first through hole is arranged on the limiting piece, the first through hole is arranged along the moving direction of the lock tongue, and when the lock tongue moves along the moving direction of the lock tongue and approaches the limiting piece, the lock tongue passes through the first through hole.

2. The ring network switch cabinet according to claim 1, characterized in that: The limiting piece comprises a first bending part, a second bending part, a third bending part and a fourth bending part arranged in sequence; The first bending part is arranged close to the electromagnetic lock, and the fourth bending part is fixed on the lock rod.

3. The ring network switch cabinet according to claim 2, characterized in that: The first bending part and the third bending part are arranged in parallel, the second bending part and the fourth bending part are arranged in parallel, the first bending part, the second bending part and the third bending part form a limiting space, and the fourth bending part extends to the lock rod and is fixed on the lock rod.

4. The ring network switch cabinet according to claim 3, characterized in that: The first through hole is arranged on the first bending part.

5. The ring network switch cabinet according to claim 1, characterized in that: The lower end of the lock rod is provided with a first limiting plate and a second limiting plate, and a middle shaft part is connected between the first limiting plate and the second limiting plate.

6. The ring network switch cabinet according to claim 5, characterized in that: The lower cabinet door is provided with a fifth bending part, the fifth bending part is provided with a second through hole, and the lock rod passes through the second through hole.

7. The ring network switch cabinet according to claim 6, characterized in that: The fifth bending part is arranged between the first limiting plate and the second limiting plate, and the middle shaft part passes through the fifth bending part.

8. The ring network switch cabinet according to claim 7, characterized in that: The radius of the second through hole is smaller than the radius of the first limiting plate and the radius of the second limiting plate.

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