Locking device for environmentally friendly gas-insulated ring main unit

Abstract

The utility model provides a kind of locking device for environmental protection gas insulation ring main unit, including lock body, linkage structure and operating part.Lock body has open cavity;Lock body has length direction and width direction;Linkage structure is rotationally arranged in open cavity, and rotation axis is along the depth direction of open cavity setting, linkage structure has the lock rod part that can pass out lock body along width direction;Linkage structure is used to drive lock rod part to slide in rotation process;Operating part is located at the opening of open cavity;Operating part is rotationally connected with linkage structure by prism pair, and rotation axis is perpendicularly arranged with the rotation axis of linkage structure;Wherein, operating part overturns to leave open cavity and stays, linkage structure is rotated by operating part to drive, to make lock rod part retract to open cavity.The locking device for environmental protection gas insulation ring main unit provided by the utility model aims to solve the problem that cabinet door cannot be opened for maintenance after the locking mechanism used in prior art fails, and there is a safety hazard.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment technology, specifically relating to a locking device for an environmentally friendly gas-insulated ring main unit. Background Technology

[0002] A ring main unit (RMU) is an electrical device consisting of a set of power transmission and distribution equipment housed in a metal or non-metal insulated cabinet or assembled into a modular ring network power supply unit. Its core components include load switches and fuses. It offers advantages such as simple structure, small size, low price, improved power supply parameters and performance, and enhanced power supply safety. It is widely used in substations and prefabricated substations in load centers such as urban residential areas, high-rise buildings, large public buildings, and factories. To ensure the normal operation of the RMU, regular maintenance is necessary.

[0003] In existing technologies, the cabinet door needs to be opened when inspecting internal components of a ring main unit. Chinese patent document CN111431049A discloses a locking mechanism for a ring main unit, indicating that one end of the handle is lifted by the spring force, facilitating opening and closing. However, the spring is prone to failure after a period of use, causing the handle to become unusable and making it difficult to open the cabinet door for inspection, posing a safety hazard. Furthermore, during the spring's lifting process, the handle can easily bump into workers, resulting in poor safety. Utility Model Content

[0004] This utility model provides a locking device for an environmentally friendly gas-insulated ring main unit, which aims to solve the problem that the cabinet door cannot be opened for maintenance after the locking mechanism used in the prior art fails, thus posing a safety hazard.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a locking device for an environmentally friendly gas-insulated ring main unit, comprising: The lock body has an opening; the lock body has a length direction and a width direction. A linkage structure is rotatably disposed in the open cavity, with the axis of rotation arranged along the depth direction of the open cavity. The linkage structure has a locking rod portion that can extend through the lock body along the width direction. The linkage structure is used to drive the locking rod portion to slide during rotation. An operating component is located at the opening of the open mouth; the operating component is rotatably connected to the linkage structure via a prism pair, and the axis of rotation is perpendicular to the axis of rotation of the linkage structure. When the operating component flips away from the open mouth and stays there, it drives the linkage structure to rotate, so that the locking rod retracts into the open mouth.

[0006] In one possible implementation, the linkage structure includes: A rotating shaft is rotatably disposed in the open cavity, with the side near the opening of the open cavity used for rotatable connection of the operating component; A connecting rod is disposed in the open cavity, with one end connected to the side of the rotating shaft away from the opening of the open cavity, and the other end connected to the locking rod portion; The open cavity has a mounting plate for the rotating shaft to rotate.

[0007] In one possible implementation, the prism pair includes: An auxiliary block is disposed on the rotating shaft, and the auxiliary block is provided with a prismatic groove with an opening; A prism body is disposed on the operating member, and the prism body is adapted to the prism-shaped groove.

[0008] In one possible implementation, the operating element is provided with a first handle.

[0009] In one possible implementation, the interlocking device for the environmentally friendly gas-insulated ring main unit further includes: A baffle is disposed in the opening to limit the end of the operating member away from the rotating shaft; A telescopic structure is provided vertically, with the telescopic end of the telescopic structure connected to the bottom end of the baffle and the fixed end of the telescopic structure connected to the side wall of the open cavity.

[0010] In one possible implementation, the telescopic structure includes: The sleeve rod has one end connected to the bottom end of the baffle and the other end has a sliding groove; The slide rod has one end slidably disposed in the slide groove, and the other end connected to the side wall of the open mouth. A retaining pin is used to secure the sleeve rod to the sliding rod. The sleeve rod and the slide rod are provided with pin holes that are adapted to the fixing pin.

[0011] In one possible implementation, the baffle is provided with a second handle.

[0012] In one possible implementation, the baffle is provided with a locking post.

[0013] The beneficial effects of the locking device for environmentally friendly gas-insulated ring main units provided by this utility model are as follows: Compared with the prior art, by setting a lock body with an open cavity, the linkage structure is rotatably set in the open cavity, and the operating member is located at the opening of the open cavity. The operating member and the linkage structure are rotatably connected through a prism pair, so that the operating member can not only rotate, but also stop after rotating to the desired position. The rotation axis of the operating member is set perpendicular to the rotation axis of the linkage structure. The linkage structure has a locking rod part, which drives the locking rod part to slide during the rotation of the linkage structure. The locking rod part can pass through the lock body along the width direction. After the operating member flips to leave the open cavity and stops, the operating member drives the linkage structure to rotate, so that the locking rod part is retracted into the open cavity. When the locking rod part passes through the lock body, the ring main unit is in the locked state. After the locking rod part is retracted into the open cavity, the ring main unit is in the unlocked state. In this application, the operating member and the linkage structure are rotatably connected through a prism pair, so that the operating member stops after rotating to the desired position, avoiding the elastic failure of springs, making operation convenient and improving safety. After the operating component flips away from the opening and stays there, it drives the linkage structure to rotate, causing the locking rod to retract into the opening or pass through the lock body, thereby opening or closing the ring main unit. During this process, the operating component can be rotated to a convenient operating angle according to the operator's habits, eliminating the need to repeatedly lift or lower the operating component, reducing labor intensity, improving work efficiency, and making it highly practical. Attached Figure Description

[0014] Figure 1 Schematic diagram of the structure of the interlocking device for the environmentally friendly gas-insulated ring main unit provided in this embodiment of the utility model. Figure 1 ; Figure 2 Schematic diagram of the structure of the interlocking device for the environmentally friendly gas-insulated ring main unit provided in this embodiment of the utility model. Figure 2 ; Figure 3 Schematic diagram of the structure of the interlocking device for the environmentally friendly gas-insulated ring main unit provided in this embodiment of the utility model. Figure 3 ; Figure 4 A schematic diagram of the telescopic structure of the locking device for the environmentally friendly gas-insulated ring main unit provided in this embodiment of the utility model; Figure 5 A schematic diagram of the prism pair structure of the locking device for the environmentally friendly gas-insulated ring main unit provided in this embodiment of the utility model.

[0015] Explanation of reference numerals in the attached figures: 10. Lock body; 11. Mounting plate; 20. Linkage structure; 21. Rotary shaft; 22. Connecting rod; 23. Lock rod part; 30. Operating component; 31. First handle; 32. Auxiliary plate; 321. Slot; 40. Prism pair; 41. Auxiliary block; 42. Prism body; 50. Baffle; 51. Second handle; 52. Locking pin; 60. Telescopic structure; 61. Sleeve rod; 611. Pin hole; 62. Slide rod. Detailed Implementation

[0016] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] It should be noted that the terms "length", "width", "height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", and "tail" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0018] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "fixing," and "setting" 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 according to the specific circumstances.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Additionally, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0020] Please refer to the following: Figures 1 to 5The locking device for an environmentally friendly gas-insulated ring main unit provided by this utility model is described below. The locking device includes a lock body 10, a linkage structure 20, and an operating component 30. The lock body 10 has an open cavity. The lock body 10 has a length direction and a width direction. The linkage structure 20 is rotatably disposed in the open cavity, and the axis of rotation is set along the depth direction of the open cavity. The linkage structure 20 has a locking rod portion 23 that can extend out of the lock body 10 along the width direction. The linkage structure 20 is used to drive the locking rod portion 23 to slide during rotation. The operating component 30 is located at the opening of the open cavity. The operating component 30 is rotatably connected to the linkage structure 20 through a prism pair 40, and the axis of rotation is set perpendicular to the axis of rotation of the linkage structure 20. When the operating component 30 flips away from the open cavity and stops, it drives the linkage structure 20 to rotate, causing the locking rod portion 23 to retract into the open cavity.

[0021] In this embodiment, the lock body 10 has an open cavity. A linkage structure 20 is rotatably disposed within the open cavity, with its rotation axis along the depth direction of the open cavity. The linkage structure 20 has a locking rod portion 23, which can extend through the lock body 10 along its width direction. The linkage structure 20 is used to drive the locking rod portion 23 to slide during rotation. An operating member 30 is located at the opening of the open cavity. The operating member 30 is rotatably connected to the linkage structure 20 via a prism pair 40. The operating member 30 can not only rotate but also remain stationary after rotating to the desired position. The rotation axis of the operating member 30 is perpendicular to the rotation axis of the linkage structure 20. After the operating member 30 flips away from the open cavity and remains stationary, it drives the linkage structure 20 to rotate, causing the locking rod portion 23 to retract into the open cavity. When the locking rod portion 23 extends out of the lock body 10, the ring main unit is in a locked state. After the locking rod portion 23 retracts into the open cavity, the ring main unit is in an unlocked state.

[0022] The locking device for an environmentally friendly gas-insulated ring main unit provided in this embodiment of the invention, compared with the prior art, features a lock body 10 with an open cavity. A linkage structure 20 is rotatably disposed within the open cavity, and an operating member 30 is located at the opening of the open cavity. The operating member 30 and the linkage structure 20 are rotatably connected via a prism pair 40, allowing the operating member 30 to not only rotate but also remain stationary after reaching the desired position. The rotation axis of the operating member 30 is perpendicular to the rotation axis of the linkage structure 20. The linkage structure 20 has a locking rod 23, which slides during rotation, allowing it to extend through the lock body 10 along its width. After the operating member 30 flips away from the open cavity and remains stationary, it drives the linkage structure 20 to rotate, causing the locking rod 23 to retract into the open cavity. When the locking rod 23 extends out of the lock body 10, the ring main unit is in a locked state. After the locking rod 23 retracts into the open cavity, the ring main unit is in an unlocked state. In this application, the operating component 30 and the linkage structure 20 are rotatably connected via a prism pair 40. This allows the operating component 30 to remain in the desired position after rotation, avoiding the elasticity failure that can occur with springs, thus facilitating operation and improving safety. After the operating component 30 flips away from the opening and remains there, it drives the linkage structure 20 to rotate, causing the locking rod 23 to retract into the opening or pass through the lock body 10, thereby opening or closing the ring main unit. During this process, the operating component 30 can be rotated to a convenient operating angle according to the operator's habits, eliminating the need to repeatedly lift or lower the operating component 30, reducing labor intensity, improving work efficiency, and demonstrating good practicality.

[0023] In some embodiments, please refer to Figures 1 to 3 The linkage structure 20 includes a rotating shaft 21 and a connecting rod 22. The rotating shaft 21 is rotatably disposed in the open cavity, with the side near the opening of the open cavity used for the rotatable connection of the operating member 30. The connecting rod 22 is disposed in the open cavity, with one end connected to the side of the rotating shaft 21 away from the opening of the open cavity, and the other end connected to the locking rod portion 23. The open cavity has a mounting plate 11 for the rotating shaft 21 to rotatably connect to. In this embodiment, the rotating shaft 21 is rotatably connected to the mounting plate 11 in the open cavity, and the operating member 30 is connected to the side of the rotating shaft 21 near the opening of the open cavity, thereby driving the rotating shaft 21 to rotate through the operating member 30. The connecting rod 22 is connected to the side of the rotating shaft 21 away from the opening of the open cavity, and the other end is connected to the locking rod portion 23. Specifically, the connecting rod 22 has an elongated hole, and the locking rod portion 23 has a fixed shaft, which is slidably disposed in the elongated hole. During the rotation of the rotating shaft 21, the connecting rod 22 is driven to rotate, causing the fixed shaft to slide in the elongated hole, thereby driving the locking rod part 23 to slide, so that the locking rod part 23 can retract or extend out of the opening mouth to achieve unlocking or locking.

[0024] In some embodiments, please refer to Figure 5The prism assembly 40 includes an auxiliary block 41 and a prism body 42. The auxiliary block 41 is mounted on the rotating shaft 21 and has an open prism-shaped groove. The prism body 42 is mounted on the operating member 30 and is adapted to the prism-shaped groove. In this embodiment, the prism-shaped groove has an opening on the side near the operating member 30, but the opening is not large enough to disengage the prism body 42 from the groove. The prism body 42 rotates within the prism-shaped groove, which limits its movement. The operating member 30 rotates with the prism body 42, allowing it to rotate at different angles. After the operating member 30 reaches a position suitable for operation, the engagement of the prism body 42 and the prism-shaped groove allows the operating member 30 to remain stationary, eliminating the need for frequent lifting and lowering and reducing labor intensity.

[0025] Furthermore, in another embodiment of the prism pair 40, the prism pair 40 can be a straight damping pivot. The straight damping pivot is connected to the pivot 21 and the operating member 30 respectively, thereby realizing the rotation of the operating member 30 and stopping at any angle, making operation convenient.

[0026] In some embodiments, please refer to Figure 1 and Figure 2 The operating component 30 is provided with a first handle 31, so that the operating component 30 can be rotated by holding the first handle 31 during the rotation of the operating component 30, thereby improving the convenience of operation.

[0027] In some embodiments, please refer to Figure 1 and Figure 2 The locking device for the environmentally friendly gas-insulated ring main unit provided in this embodiment of the utility model also includes a baffle 50 and a telescopic structure 60. The baffle 50 is disposed in the open cavity and is used to limit the end of the operating member 30 away from the rotating shaft 21. The telescopic structure 60 is arranged vertically, with its telescopic end connected to the bottom end of the baffle 50 and its fixed end connected to the side wall of the open cavity. In this embodiment, the baffle 50 is disposed in the open cavity, and the bottom end of the baffle 50 is provided with the telescopic structure 60. The telescopic structure 60 is arranged vertically, and its telescopic end is connected to the bottom end of the baffle 50, so that the telescopic structure 60 can drive the baffle 50 to move vertically. When locking or unlocking is not required, the baffle 50 limits the end of the operating member 30 away from the rotating shaft 21, thereby preventing the operating member 30 from rotating under extreme weather conditions or during transportation, thus avoiding potential safety hazards. When it is necessary to unlock or lock, the telescopic structure 60 drives the baffle 50 to move downward, releasing the baffle 50 from limiting the operating element 30, thereby allowing the operating element 30 to be raised or lowered.

[0028] In some embodiments, please refer to Figure 4The telescopic structure 60 includes a sleeve rod 61, a sliding rod 62, and a fixing pin. One end of the sleeve rod 61 is connected to the bottom end of the baffle 50, and the other end has a groove. One end of the sliding rod 62 is slidably disposed in the groove, and the other end is connected to the side wall of the opening. The fixing pin is used to fix the sleeve rod 61 and the sliding rod 62. The sleeve rod 61 and the sliding rod 62 are provided with pin holes 611 adapted to the fixing pin. In this embodiment, one end of the sleeve rod 61 is connected to the bottom end of the baffle 50, and the other end has a groove. The sliding rod 62 is slidably disposed in the groove, and the other end is connected to the side wall of the opening. Thus, the height of the baffle 50 can be adjusted by adjusting the combined length of the sleeve rod 61 and the sliding rod 62. When the baffle 50 reaches the set position, the length of the sleeve rod 61 and the sliding rod 62 is locked by inserting the fixing pin into the pin hole 611.

[0029] In some embodiments, please refer to Figure 1 and Figure 2 The baffle 50 is provided with a second handle 51, so that the baffle 50 can be moved by holding the second handle 51 during the adjustment of the position of the baffle 50, thereby improving the ease of operation.

[0030] In some embodiments, please refer to Figure 2 and Figure 3 The baffle 50 is equipped with a locking post 52. Specifically, the operating member 30 is equipped with an auxiliary plate 32, which is perpendicular to the operating member 30. The auxiliary plate 32 is equipped with a locking groove 321, which is adapted to the locking post 52. During the process of the operating member 30 rotating into the opening mouth, the locking post 52 is locked in the locking groove 321 of the auxiliary plate 32, and the operating member 30 is initially fixed by the locking post 52.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A locking device for an environmentally friendly gas-insulated ring main unit, characterized in that, include: The lock body has an opening; the lock body has a length direction and a width direction. A linkage structure is rotatably disposed in the open cavity, with the axis of rotation arranged along the depth direction of the open cavity. The linkage structure has a locking rod portion that can extend through the lock body along the width direction. The linkage structure is used to drive the locking rod portion to slide during rotation. An operating component is located at the opening of the open mouth; the operating component is rotatably connected to the linkage structure via a prism pair, and the axis of rotation is perpendicular to the axis of rotation of the linkage structure. When the operating component flips away from the open mouth and stays there, it drives the linkage structure to rotate, so that the locking rod retracts into the open mouth.

2. The interlocking device for an environmentally friendly gas-insulated ring main unit as described in claim 1, characterized in that, The linkage structure includes: A rotating shaft is rotatably disposed in the open cavity, with the side near the opening of the open cavity used for rotatable connection of the operating component; A connecting rod is disposed in the open cavity, with one end connected to the side of the rotating shaft away from the opening of the open cavity, and the other end connected to the locking rod portion; The open cavity has a mounting plate for the rotating shaft to rotate.

3. The interlocking device for environmentally friendly gas-insulated ring main units as described in claim 2, characterized in that, The prism pair includes: An auxiliary block is disposed on the rotating shaft, and the auxiliary block is provided with a prismatic groove with an opening; A prism body is disposed on the operating member, and the prism body is adapted to the prism-shaped groove.

4. The interlocking device for an environmentally friendly gas-insulated ring main unit as described in claim 3, characterized in that, The operating component is equipped with a first handle.

5. The interlocking device for an environmentally friendly gas-insulated ring main unit as described in claim 2, characterized in that, The interlocking device for the environmentally friendly gas-insulated ring main unit also includes: A baffle is disposed in the opening to limit the end of the operating member away from the rotating shaft; A telescopic structure is provided vertically, with the telescopic end of the telescopic structure connected to the bottom end of the baffle and the fixed end of the telescopic structure connected to the side wall of the open cavity.

6. The interlocking device for an environmentally friendly gas-insulated ring main unit as described in claim 5, characterized in that, The telescopic structure includes: The sleeve rod has one end connected to the bottom end of the baffle and the other end has a sliding groove; The slide rod has one end slidably disposed in the slide groove, and the other end connected to the side wall of the open mouth. A retaining pin is used to secure the sleeve rod to the sliding rod. The sleeve rod and the slide rod are provided with pin holes that are adapted to the fixing pin.

7. The interlocking device for an environmentally friendly gas-insulated ring main unit as described in claim 5, characterized in that, The baffle is equipped with a second handle.

8. The interlocking device for an environmentally friendly gas-insulated ring main unit as described in claim 5, characterized in that, The baffle is equipped with a locking post.

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