CN219303515U

CN219303515U - Ring main unit with grounding switch locking device

Info

Publication number: CN219303515U
Application number: CN202222513366.1U
Authority: CN
Inventors: 刘韬; 周乐冰; 彭长河; 温海波; 彭思远; 刘忠亮
Original assignee: Hunan Highs Electric Appliance Co ltd
Current assignee: Hunan Highs Electric Appliance Co ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2023-07-04
Anticipated expiration: 2032-09-22

Abstract

The utility model provides a ring main unit with a grounding switch locking device. The ring main unit with the grounding switch locking device comprises a cabinet body, an operation panel arranged on the cabinet body and an operation hole arranged on the operation panel, wherein a locking mechanism is arranged on one surface of the operation panel, which is close to the cabinet body, and comprises a sliding rail, a locking plate and a telescopic unit, the sliding rail and the telescopic unit are arranged on two sides of the operation hole in parallel, the locking plate is of an elongated strip-shaped structure, is attached to the operation panel, spans the center of the operation hole, and two ends of the operation panel are respectively connected with the sliding rail and the movable ends of the telescopic unit. The ring main unit with the grounding switch locking device solves the problems of high fault rate, complex operation and the like of an error prevention device.

Description

Ring main unit with grounding switch locking device

Technical Field

The utility model relates to the field of ring main units, in particular to a ring main unit with a grounding switch locking device.

Background

A large number of ring main units are commonly arranged in a power system, and accidents of the electrified earthing switch occur due to the structural structure of the ring main units. Therefore, when the ring main unit is used as a power inlet wire, the grounding switch needs to be provided with a reliable and perfect error-preventing device so as to prevent misoperation and ensure the operation safety of the power distribution network. At present, a plurality of grounding switch locking devices based on electromagnetic locks are available, and the function that a worker cannot operate a switch operation hole under the electrified condition is achieved. Because the magnetic force action range of the electromagnet is limited, the existing design can only realize locking by using the electromagnet, but can not realize opening and closing of the locking device by using a single electromagnet, and a complex reset mechanism is additionally required to be arranged. The problems of high failure rate, complex operation and the like exist.

Disclosure of Invention

The utility model provides a ring main unit with a grounding switch locking device, which solves the problems of high failure rate, complex operation and the like of the conventional error-prevention device.

The utility model provides a take earthing switch locking device's looped netowrk cabinet, includes the cabinet body, locates the operating panel of the cabinet body, and locate operating panel's operation hole operating panel leans on the internal one side of cabinet is equipped with locking mechanical system, including slide rail, latch plate, flexible unit, the slide rail with the flexible unit is parallel locates the operating hole both sides, the latch plate is long and thin strip structure, laminating operating panel sets up, and strides across operating panel's center, both ends respectively with the slide rail with flexible unit's expansion end is connected.

In a preferred embodiment of the ring main unit with the grounding switch locking device provided by the utility model, the locking plate is widened at two ends which do not span the operation hole, and is connected with the sliding rail and the movable end of the telescopic unit at positions where the two ends are widened respectively. The lock plate is provided with a noise reduction layer on one surface attached to the operation panel.

In a preferred embodiment of the ring main unit with the grounding switch locking device provided by the utility model, the movable plate is connected to the center of one surface of the locking plate far away from the operation panel through the rotating shaft, and the position of the operation panel close to the movable plate is provided with the limiting column. The movable plate is provided with an inclined plane at the tail end close to the limiting column, is prolonged at one end far away from the limiting column, and is provided with a weight. The operation panel is provided with a limit groove at one end which is close to the movable plate and is extended or provided with a weight; the opening of the limiting groove is V-shaped.

In a preferred embodiment of the ring main unit with the grounding switch locking device provided by the utility model, the telescopic unit comprises a shaft sleeve, a telescopic shaft, a spring and an electromagnet, wherein the two shaft sleeves are coaxially arranged and parallel to the sliding rail, and two ends of the telescopic shaft are respectively inserted into the two shaft sleeves; a spring is arranged in one shaft sleeve and connected with the telescopic shaft, the electromagnet is arranged in the shaft sleeve, and an iron ring is sleeved on the telescopic shaft at a position close to the electromagnet; the iron ring is fixedly connected with the part of the telescopic shaft, which is positioned between the two shaft sleeves.

Compared with the prior art, the ring main unit with the grounding switch locking device provided by the utility model has the advantages that the stroke range required by opening and closing is greatly shortened by changing the structure of the locking plate, so that the function of controlling the extension and retraction of a single electromagnet can be realized. Greatly simplifying the structure of the misoperation prevention device and solving the problems of high failure rate, complex operation and the like.

Drawings

FIG. 1 is a schematic diagram of a ring main unit with a locking device for a grounding switch in embodiment 1;

FIG. 2 is a schematic view of the structure of the latch mechanism in embodiment 1;

FIG. 3 is a schematic view of the structure of the latch mechanism in embodiment 2;

fig. 4 is a schematic view of the structure of fig. 3 in another state.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model.

Example 1:

please refer to fig. 1 and fig. 2, which are schematic diagrams of a ring main unit 1 with a locking device for a grounding switch and a locking mechanism 3 thereof according to the present utility model.

The ring main unit 1 with the grounding switch locking device comprises a main unit body, an operation panel 2 arranged on the front surface of the main unit body and an operation hole 21. The operation panel 2 is provided with a locking mechanism 3 on one surface close to the inside of the cabinet body, and comprises a sliding rail 31, a locking plate 32 and a telescopic unit 33.

The slide rail 31 includes a rail 41 and a slider 42, the rail 41 is vertically disposed at a position on the operation panel 2 on the left side of the operation hole 21, and the slider 42 is mounted on the rail 41 and can slide up and down along the rail 41.

The telescopic unit 33 comprises a lower shaft sleeve 51, an upper shaft sleeve 52, a telescopic shaft 53, a spring 54, an electromagnet 55 and an iron ring 56. The upper shaft sleeve 52 and the lower shaft sleeve 51 are coaxial and vertically arranged at the right side of the operation hole 21 of the operation panel 2.

The lower shaft sleeve 51 has a cylindrical structure, a closed bottom end, a spring 54 arranged near the bottom end, and an annular electromagnet 55 arranged at the top. The top end of the upper shaft sleeve 52 is closed, and the bottom end is provided with an annular blocking head 57 for the telescopic shaft 53 to pass through.

The upper and lower ends of the telescopic shaft 52 are inserted into the lower shaft sleeve 51 and the upper shaft sleeve 52 at the electromagnet 55 and the stopper 57, respectively, and are slidable up and down therein. The iron ring 56 is also fixedly sleeved on the telescopic shaft 52.

The main body of the locking plate 32 is a flat plate with an elongated strip shape, and two ends of the flat plate are widened and fixedly connected with the sliding block 42 and the telescopic shaft 53 respectively at positions above the iron ring 56. Both ends of the lock plate 32 are fixed to the slider 42 and a surface of the telescopic shaft 53 near the operation panel 2, so that the lock plate 32 is attached to the operation panel 2.

The two can produce better blocking effect under the laminating state. Further, a friction-reducing coating or a sticker is provided on the surface of the lock plate 32 that is attached to the operation panel 2, so as to reduce noise. Reducing friction also allows for smoother movement of the components.

In the case of electrification, the electromagnet 55 is also electrified to attract the iron ring 56 and drive the lock plate 32 to move downwards, and the electromagnet plays a role of blocking the operation of the switch operation hole by a worker, which is located in the middle of the operation hole 21. Further, warning icons or characters may be provided on the lock plate 32 to prompt the operator to perform a correct operation.

When the power is off, the electromagnet 55 loses the attraction to the iron ring 56, and under the action of the spring 54, the lock plate 32 is pushed to move upwards and leave the operation hole 21.

When the electric power is charged again, since the travel of the locking plate 32 is only the radius of the operation hole 21, the magnetic force generated by the electromagnet 55 can still attract the iron ring 56 at a short distance, thereby attracting the iron ring to move downwards again and blocking the operation hole 21.

Example 2:

please refer to fig. 3 and fig. 4, which are schematic diagrams of the locking mechanism 3 of the ring main unit 1 with the locking device of the present utility model in two states.

The difference from example 1 is that: the lock plate 32 is connected to the movable plate 61 through a rotation shaft at the center of a surface far from the operation panel 2. The movable plate 61 has a slope at its top end and a weight at its bottom end, so that it is kept vertical by gravity.

The operation panel 2 is provided with a limit post 62 above the operation hole 21 and near the top end of the movable plate 61, and a limit groove 63 above the operation hole 21 and near the bottom end of the movable plate 61. The limit groove 63 is provided with a V-shaped opening.

With this structure, the movable plate 61 is rotated counterclockwise by the pushing of the stopper post 62 when the lock plate 32 moves upward, and leaves the operation hole 21. When moving downwards, the spring falls back under the dead weight and rotates clockwise, and finally abuts against the limit groove 63 and is inserted into the limit groove.

The movable plate 61 cooperates with the locking plate 32 to form a cross-shaped structure to cover the operation hole 21, thereby forming a better blocking effect.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.

Claims

1. The utility model provides a take earthing switch blocking device's looped netowrk cabinet, includes the cabinet body, locates the operating panel of the cabinet body, and locate operating panel's operating hole, its characterized in that: the operation panel leans on the internal one side of cabinet is equipped with locking mechanism, including slide rail, jam plate, flexible unit, the slide rail with flexible unit is parallel locates the operation hole both sides, the jam plate is long and thin strip structure, laminating operation panel sets up, and strides across the center of operation hole, both ends respectively with the slide rail with flexible unit's expansion end is connected.

2. The ring main unit with grounding switch lockout device of claim 1, wherein: the locking plate is widened at two ends which do not span the operation hole, and is connected with the sliding rail and the movable end of the telescopic unit at the positions where the two ends are widened respectively.

3. The ring main unit with grounding switch lockout device of claim 1, wherein: the lock plate is provided with a noise reduction layer on one surface attached to the operation panel.

4. The ring main unit with grounding switch lockout device of claim 1, wherein: the lock plate is connected with a movable plate through a rotating shaft at the center of one surface far away from the operation panel, and the operation panel is provided with a limit post at a position close to the movable plate.

5. The ring main unit with grounding switch lockout device of claim 4, wherein: the movable plate is provided with an inclined plane at the tail end close to the limiting column, is prolonged at one end far away from the limiting column, and is provided with a weight.

6. The ring main unit with grounding switch lockout device of claim 5, wherein: the operation panel is provided with a limit groove at one end which is close to the movable plate and is extended or provided with a weight; the opening of the limiting groove is V-shaped.

7. The ring main unit with a grounding switch locking device according to any one of claims 1 to 6, wherein: the telescopic unit comprises a shaft sleeve, a telescopic shaft, a spring and an electromagnet, wherein the two shaft sleeves are coaxially arranged and parallel to the sliding rail, and two ends of the telescopic shaft are respectively inserted into the two shaft sleeves; a spring is arranged in one shaft sleeve and connected with the telescopic shaft, the electromagnet is arranged in the shaft sleeve, and an iron ring is sleeved on the telescopic shaft at a position close to the electromagnet; the iron ring is fixedly connected with the part of the telescopic shaft, which is positioned between the two shaft sleeves.