Ring main unit

Abstract

The utility model belongs to the technical field of ring main units, and discloses a ring main unit, which comprises a cabinet body, a first door plate and a second door plate, the first door plate is detachably connected with the cabinet body, the first door plate is provided with a mounting port, the second door plate is detachably connected with the first door plate, and one side of the second door plate facing the cabinet body is provided with a locking lug and a clamping piece. According to the ring main unit provided by the utility model, when the second door plate is buckled on the mounting port on the first door plate and the operating mechanism is located at the closing position, the clamping piece is clamped with the cabinet body, and the interlocking piece of the operating mechanism is inserted into the locking lug, so that the second door plate is locked on the first door plate; the situation that a maintainer mistakenly touches a terminal of the cable chamber in an internal electrified state due to the fact that the cabinet door is mistakenly disassembled can be avoided, and maintenance operation safety is ensured.

Description

Technical Field

[0001] This utility model relates to the field of ring main unit technology, and in particular to a ring main unit. Background Technology

[0002] In related technologies, when the operating mechanism of a ring main unit is in the closed position, the cable compartment terminals inside the unit are energized; when the operating mechanism is in the open position, the cable compartment terminals are de-energized. During maintenance operations on the ring main unit, maintenance personnel remove the cabinet door from the cabinet, exposing the cable compartment terminals. If, due to negligence, the operator fails to switch the operating mechanism to the open position before removing the cabinet door, they may accidentally touch the energized cable compartment terminals inside the ring main unit, potentially causing electric shock and other safety hazards, posing a serious safety risk to maintenance operations. Utility Model Content

[0003] The purpose of this utility model is to provide a ring main unit that prevents maintenance personnel from accidentally opening the cabinet door when the operating mechanism is in the closed position, thus avoiding accidental contact with the terminals of the cable compartment that are energized inside, and effectively ensuring the safety of maintenance operations.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A ring main unit, characterized in that it comprises:

[0006] The cabinet contains an operating mechanism;

[0007] The first door panel is detachably connected to the cabinet body, and the first door panel is provided with an installation opening;

[0008] The second door panel is detachably connected to the first door panel, and the side of the second door panel facing the cabinet is provided with a lock lug and a snap-fit ​​component.

[0009] When the second door panel is fastened to the mounting opening on the first door panel and the operating mechanism is in the closed position, the latching member is latched to the cabinet body, and the interlocking member of the operating mechanism is inserted into the lock lug to lock the second door panel onto the first door panel.

[0010] Preferably, the interlocking member is configured as a rod-shaped structure, and the lock lug is provided with a locking hole. When the second door panel is fastened to the mounting opening on the first door panel and the operating mechanism is in the closed position, the interlocking member is inserted into the locking hole.

[0011] Preferably, the lock lug includes a first lug, a second lug disposed on both sides opposite to the first lug, and a third lug disposed at the end of the second lug away from the first lug. The first lug and the second lug together form the locking hole, and the third lug is fixedly connected to the second door panel.

[0012] Preferably, the snap-fit ​​component includes a connecting part, an extension part, and a snap-fit ​​part connected in sequence. The connecting part is fixedly connected to the second door panel. The extension part extends in a direction perpendicular to the second door panel. The snap-fit ​​part extends in a direction parallel to the second door panel. A snap-fit ​​connector is provided inside the cabinet. The snap-fit ​​connector is provided with a snap-fit ​​groove. The extension part and the snap-fit ​​part can pass through the mounting opening. When the second door panel is connected to the first door panel, the snap-fit ​​part is engaged in the snap-fit ​​groove.

[0013] Preferably, the snap-fit ​​connector includes a fixing part and an inward folding part. The first end of the fixing part is fixed to the cabinet body, the inward folding part is located at the second end of the fixing part and extends toward the end away from the second door panel, and the snap-fit ​​groove is formed on the inward folding part.

[0014] Preferably, the cabinet also includes a limiting plate provided on the cabinet body, the limiting plate having a clearance hole for the interlocking component to pass through.

[0015] Preferably, the ring main unit further includes cable compartment terminals, which are correspondingly provided with the mounting port.

[0016] Preferably, the cabinet is provided with a cable compartment partition, which is located below the cable compartment terminals. A snap-fit ​​connector is provided at one end of the cable compartment partition facing the second door panel. The snap-fit ​​connector engages with the snap-fit ​​connector.

[0017] Beneficial effects:

[0018] The ring main unit provided by this utility model, when the operating mechanism is in the closed position, the interlocking part of the operating mechanism is connected to the lock lug. The operating mechanism, the lock lug, the locking member, and the cabinet together form a lock on the second door panel. This ensures that when the operating mechanism is in the closed position, the second door panel is locked and cannot be opened or removed. The second door panel can only be removed when the operating mechanism is switched to the open position and the locking lug is released from the locking mechanism. This achieves the linkage between the locking of the second door panel and the working state of the operating mechanism.

[0019] When the installation port corresponds to the cable compartment terminal inside the cabinet, the operating mechanism is in the closed position, and the cable compartment terminal is energized. At this time, the operating mechanism, the locking lug, the snap-fit ​​connector, and the cabinet together lock the second door panel. The second door panel is locked and cannot be opened or removed. This prevents maintenance personnel from accidentally opening the cabinet door when the operating mechanism is in the closed position, which could lead to accidental contact with the energized cable compartment terminal inside, thus avoiding electric shock to maintenance personnel and ensuring personnel safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the ring main unit provided by this utility model;

[0021] Figure 2 This is a partial structural schematic diagram of the ring main unit provided by this utility model;

[0022] Figure 3 This is a structural schematic diagram of the first door panel and the second door panel provided by this utility model;

[0023] Figure 4 This is an exploded view of the first and second door panels provided by this utility model.

[0024] In the picture:

[0025] 1. First door panel; 101. First mounting hole; 102. Third mounting hole; 11. Mounting opening; 111. Supporting part; 12. Through hole;

[0026] 2. Second door panel; 201. Second mounting hole; 21. Lock lug; 2101. First lug; 2102. Second lug; 2103. Third lug; 211. Locking hole; 22. Snap-fit ​​component; 221. Connecting part; 222. Extension part; 223. Snap-fit ​​part;

[0027] 31. First bolt; 32. First nut;

[0028] 4. Cabinet body; 41. Limit plate; 411. Clearance hole;

[0029] 5. Operating mechanism; 51. Interlocking components;

[0030] 6. Cable compartment terminal; 61. Cable compartment partition; 611. Clip connector; 6111. Fixing part; 6112. Inward folding part; 612. Clip groove. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] This embodiment provides a ring main unit. (Refer to...) Figures 1 to 4 As shown, the ring main unit includes a cabinet body 4, a first door panel 1, and a second door panel 2. An operating mechanism 5 is provided inside the cabinet body 4. The first door panel 1 is detachably connected to the cabinet body 4 and has an installation opening 11. The second door panel 2 is detachably connected to the first door panel 1, and a locking lug 21 and a latching member 22 are provided on the side of the second door panel 2 facing the cabinet body 4. When the second door panel 2 is engaged with the installation opening 11 on the first door panel 1, and the operating mechanism 5 is in the closed position, the latching member 22 latches with the cabinet body 4, and the interlocking member 51 of the operating mechanism 5 is inserted into the locking lug 21 to lock the second door panel 2 onto the first door panel 1.

[0036] In this embodiment, when the operating mechanism 5 is in the closed position, the interlocking member 51 of the operating mechanism 5 is connected to the lock lug 21. The operating mechanism 5, the lock lug 21, the latching member 22, and the cabinet 4 together form a lock on the second door panel 2. This ensures that when the operating mechanism 5 is in the closed position, the second door panel 2 is locked and cannot be opened or removed. The second door panel 2 can only be removed when the operating mechanism 5 is switched to the open position and the lock lug 21 is released from the latching of the operating mechanism 5. This achieves the linkage between the locking of the second door panel 2 and the working state of the operating mechanism 5, preventing electric shock to maintenance personnel and ensuring the safety of personnel operation.

[0037] The cabinet 4 is equipped with a cable compartment terminal 6, and the mounting port 11 is correspondingly set with the cable compartment terminal 6. When the operating mechanism 5 is in the closed position, the cable compartment terminal 6 is in a live state. At this time, the operating mechanism 5, the locking lug 21, the snap-fit ​​component 22, and the cabinet 4 together form a lock on the second door panel 2. The second door panel 2 is in a locked state and cannot be opened or removed. This can prevent maintenance personnel from accidentally disassembling the cabinet door when the operating mechanism 5 is in the closed position, which would lead to accidental contact with the live cable compartment terminal 6 inside, thus avoiding electric shock to maintenance personnel and ensuring the safety of personnel operation.

[0038] In this embodiment, the lock lug 21 and the latching member 22 can be disposed at different ends of the second door panel 2. Specifically, the lock lug 21 and the latching member 22 are disposed at opposite ends of the second door panel 2. Specifically, the lock lug 21 is located at the upper end of the second door panel 2 and is used to cooperate with the interlocking member 51 of the operating mechanism 5, while the latching member 22 is located at the lower end of the second door panel 2.

[0039] In this embodiment, the interlocking member 51 is configured as a rod-shaped structure, and the lock lug 21 is provided with a locking hole 211. When the second door panel 2 is fastened to the mounting opening 11 on the first door panel 1, and the operating mechanism 5 is in the closed position, the interlocking member 51 is inserted into the locking hole 211. Specifically, when the operating mechanism 5 is in the closed position, the interlocking member 51 is inserted into the locking hole 211; when the operating mechanism 5 is in the open position, the interlocking member 51 is released from the locking hole 211. Specifically, the interlocking member 51, inserted into the locking hole 211, can form a structure similar to a latch, which, together with the snap-fit ​​member 22 and the cabinet 4, forms a reliable and effective locking structure for the second door panel 2.

[0040] The other structures and operating principles of the operating mechanism 5 are existing technologies and will not be elaborated on here.

[0041] Specifically, the lock lug 21 includes a first lug 2101, second lugs 2102 disposed on opposite sides of the first lug 2101, and a third lug 2103 disposed at the end of the second lug 2102 away from the first lug 2101. The first lugs 2101 and the second lugs 2102 together form a locking hole 211, and the third lug 2103 is fixedly connected to the second door panel 2. Specifically, the first lugs 2101, the second lugs 2102, and the third lug 2103 are integrally bent and formed, which has a simple structure and is easy to process.

[0042] In this embodiment, the sidewall of the mounting opening 11 is provided with a plurality of abutment portions 111 spaced apart along the circumference. The abutment portions 111 extend into the mounting opening 11. The abutment portions 111 are provided with a first mounting hole 101. The second door panel 2 is provided with a second mounting hole 201 corresponding to the first mounting hole 101. The second mounting hole 201 and the first mounting hole 101 are connected by a connector.

[0043] Specifically, the abutment part 111 provides reliable installation space for the second door panel 2 when it is installed with the first door panel 1. With a fixed size for the mounting opening 11, the size of the second door panel 2 can be reduced, eliminating the need for the second door panel 2 to be larger than the mounting opening 11 to abut against the outer periphery of the mounting hole. For example, in this embodiment, both the mounting opening 11 and the second door panel 2 are rectangular, and each of the four corners of the mounting opening 11 has a first mounting hole 101.

[0044] Specifically, the connector includes a first bolt assembly, through which the first door panel 1 and the second door panel 2 are connected. The first bolt assembly includes a first bolt 31 and a first nut 32. The first bolt 31 passes through a first mounting hole 101 and a second mounting hole 201 and is threadedly connected to the first nut 32. The first bolt assembly securely connects the first door panel 1 and the second door panel 2 together. Specifically, the interlocking member 51 is inserted into the locking hole 211, and together with the snap-fit ​​member 22 and the snap-fit ​​member of the cabinet 4, they form a locking structure for the second door panel 2. At this point, even if the first bolt assembly has been removed, the second door panel 2 cannot be removed from the first door panel 1, ensuring effective locking of the second door panel 2.

[0045] The number of the first mounting hole 101, the second mounting hole 201, and the first bolt assembly are provided in a one-to-one correspondence. The specific number can be adjusted according to the actual situation, and this application does not limit it.

[0046] In some alternative embodiments, the second mounting hole 201 is configured as a threaded hole, and the connector includes a screw, with the first door panel 1 and the second door panel 2 connected by the screw. The screw can be threaded through the first mounting hole 101 and the second mounting hole 201 in sequence, which can also achieve a fixed connection between the first door panel 1 and the second door panel 2.

[0047] In this embodiment, the latching member 22 includes a connecting portion 221, an extension portion 222, and a latching portion 223 connected in sequence. The connecting portion 221 is fixedly connected to the second door panel 2. The extension portion 222 extends in a direction perpendicular to the second door panel 2, and the latching portion 223 extends in a direction parallel to the second door panel 2. A latching connector 611 is provided inside the cabinet body 4, and a latching groove 612 is provided on the latching connector 611. The extension portion 222 and the latching portion 223 can pass through the mounting opening 11, and when the second door panel 2 is connected to the first door panel 1, the latching portion 223 is engaged in the latching groove 612. The cooperation between the latching member 22 and the latching groove 612 can also form a latch-like structure, so that the latching member 22 and the latching groove 612, as well as the interlocking member 51 and the lock lug 21, can form a latch structure at opposite ends of the second door panel 2, respectively, to achieve a reliable and effective locking effect on the second door panel 2.

[0048] In this embodiment, the cabinet 4 is provided with a cable compartment partition 61, which is located below the cable compartment terminal 6. A snap-fit ​​connector 611 extends upward and is located on the end of the cable compartment partition 61 facing the second door panel 2. Specifically, the cabinet 4 includes an upper cabinet and a lower cabinet arranged sequentially from top to bottom, and the cable compartment partition 61 is located between the upper cabinet and the lower cabinet to separate the upper cabinet and the lower cabinet.

[0049] Specifically, the connecting part 221, the extension part 222, and the snap-fit ​​part 223 are bent in sequence, and the connecting part 221, the extension part 222, and the snap-fit ​​part 223 are integrally formed, resulting in a simple structure.

[0050] For example, the lock lug 21 and the snap-fit ​​member 22 are respectively welded and fixed to the second door panel 2. Specifically, the welded connection method is secure and fast, and does not require the configuration of external connecting parts such as screws and bolts.

[0051] Specifically, the snap-fit ​​connector 611 includes a fixing part 6111 and an inward folding part 6112. The first end of the fixing part 6111 is fixed to the cabinet 4, and the inward folding part 6112 is located at the second end of the fixing part 6111 and extends away from the second door panel 2. The snap-fit ​​groove 612 is formed on the inward folding part 6112. Specifically, the first end of the fixing part 6111 is located at the end of the cable compartment partition 61 facing the second door panel 2. The inward folding part 6112 extends away from the second door panel 2, which on the one hand provides space for the snap-fit ​​groove 612, and on the other hand avoids encroaching on the space on the side of the second door panel 2, making the overall structure reasonable and compact.

[0052] In this embodiment, the first door panel 1 has a through hole 12, and a rotating head is provided on the side of the first door panel 1 facing away from the cabinet 4. The rotating head passes through the through hole 12 and is connected to the operating mechanism 5. The rotating head is configured to control the operating mechanism 5 to switch between the closed position and the open position. Specifically, the rotating head is rotatably connected to the through hole 12, and by rotating the rotating head, the rotating head can control the operating mechanism 5 to switch between the closed position and the open position.

[0053] In this embodiment, a limiting plate 41 is also provided on the cabinet 4, and the limiting plate 41 has a clearance hole 411 for the interlocking member 51 to pass through. Specifically, the limiting plate 41 is located between the operating mechanism 5 and the cable compartment terminal 6. The limiting plate 41 is located at the upper end of the snap-fit ​​member 22, and the limiting plate 41 abuts against the snap-fit ​​member 22. The setting of the limiting plate 41, through abutting against the snap-fit ​​member 22, can limit the second door panel 2, limiting the second door panel 2 from moving up and down freely. In addition, the clearance hole 411 is provided to provide clearance space for the interlocking member 51, ensuring that the interlocking member 51 passes through the clearance hole 411 and is effectively inserted into the locking hole 211 of the lock lug 21.

[0054] In this embodiment, the first door panel 1 and the cabinet body 4 are connected by a second bolt assembly. The first door panel 1 has a third mounting hole 102, and the cabinet body 4 has a corresponding fourth mounting hole. The second bolt assembly includes a second bolt and a second nut. The second bolt passes through the third mounting hole 102 and the fourth mounting hole and is threadedly connected to the second nut. Multiple third mounting holes 102, fourth mounting holes, and second bolt assemblies are provided in a one-to-one correspondence; the specific number can be adjusted according to actual conditions, and this application does not limit the number.

[0055] In some alternative embodiments, the fourth mounting hole is a threaded hole, and the first door panel 1 and the cabinet 4 are connected by screws. The screws can also be threaded through the third mounting hole 102 and the fourth mounting hole in sequence to achieve a fixed connection between the first door panel 1 and the cabinet 4.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A ring main unit, characterized in that, include: Cabinet (4), wherein an operating mechanism (5) is provided inside the cabinet (4); The first door panel (1) is detachably connected to the cabinet body (4), and the first door panel (1) is provided with an installation port (11); The second door panel (2) is detachably connected to the first door panel (1). The second door panel (2) is provided with a lock lug (21) and a snap fastener (22) on the side facing the cabinet (4). When the second door panel (2) is fastened to the mounting port (11) on the first door panel (1) and the operating mechanism (5) is in the closed position, the snap-fit ​​part (22) is snapped into the cabinet (4), and the interlocking part (51) of the operating mechanism (5) is inserted into the lock lug (21) to lock the second door panel (2) onto the first door panel (1).

2. The ring main unit according to claim 1, characterized in that, The interlocking component (51) is configured as a rod-shaped structure, and the lock lug (21) is provided with a locking hole (211). When the second door plate (2) is fastened to the mounting port (11) on the first door plate (1) and the operating mechanism (5) is in the closed position, the interlocking component (51) is inserted into the locking hole (211).

3. The ring main unit according to claim 2, characterized in that, The lock lug (21) includes a first lug (2101), a second lug (2102) disposed on both sides opposite to the first lug (2101), and a third lug (2103) disposed at the end of the second lug (2102) away from the first lug (2101). The first lug (2101) and the second lug (2102) together form the locking hole (211), and the third lug (2103) is fixedly connected to the second door panel (2).

4. The ring main unit according to claim 1, characterized in that, The snap-fit ​​component (22) includes a connecting part (221), an extension part (222), and a snap-fit ​​part (223) connected in sequence. The connecting part (221) is fixedly connected to the second door panel (2). The extension part (222) extends in a direction perpendicular to the second door panel (2). The snap-fit ​​part (223) extends in a direction parallel to the second door panel (2). The cabinet body (4) is provided with a snap-fit ​​connector (611). The snap-fit ​​connector (611) is provided with a snap-fit ​​groove (612). The extension part (222) and the snap-fit ​​part (223) can pass through the mounting opening (11). When the second door panel (2) is connected to the first door panel (1), the snap-fit ​​part (223) is snapped into the snap-fit ​​groove (612).

5. The ring main unit according to claim 4, characterized in that, The snap-fit ​​connector (611) includes a fixing part (6111) and an inner folding part (6112). The first end of the fixing part (6111) is fixed to the cabinet body (4). The inner folding part (6112) is located at the second end of the fixing part (6111) and extends toward the end away from the second door panel (2). The snap-fit ​​groove (612) is opened on the inner folding part (6112).

6. The ring main unit according to claim 1, characterized in that, It also includes a limiting plate (41) provided on the cabinet (4), the limiting plate (41) having a clearance hole (411) for the interlocking member (51) to pass through.

7. The ring main unit according to claim 1, characterized in that, The lock lug (21) and the snap-fit ​​(22) are located at opposite ends of the second door panel (2).

8. The ring main unit according to claim 1, characterized in that, The ring main unit also includes a cable compartment terminal (6), which is correspondingly provided with the mounting port (11).

9. The ring main unit according to claim 8, characterized in that, The cabinet (4) is provided with a cable compartment partition (61), which is located below the cable compartment terminal (6). The end of the cable compartment partition (61) facing the second door panel (2) extends upward and is provided with a snap connector (611). The snap connector (22) snaps into the snap connector (611).

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