Anti-misoperation structure for grounding switches

Abstract

This utility model relates to a grounding switch control structure, and more particularly to an anti-misoperation structure for a grounding switch. A movable shielding device 1, which mates with the operating hole of the grounding switch handle, is provided on the mounting base. The shielding device 1 is connected to a movable drive device, which is connected to a controller. The controller is connected to the controller of the grounding switch, thereby driving the movable shielding device 1 to operate based on the state of the grounding switch. The mounting base also provides a movable shielding device 2, which mates with the operating hole of the grounding switch handle. The movable shielding device 2 is connected to a five-proof lock. The mounting base can be pre-installed with the grounding switch or installed separately later. Integrating the movable shielding device 1 and the movable shielding device 2 on the mounting base provides dual protection and improves the anti-misoperation effect.

Description

Technical Field

[0001] This utility model relates to a control structure for grounding switches, and more particularly to a structure for preventing misoperation of grounding switches. Background Technology

[0002] A grounding switch is a safety device used in power systems. It is mainly used to connect electrical equipment to the ground wire during equipment inspection or maintenance to ensure the safety of equipment and personnel.

[0003] To ensure safety, those skilled in the art use a shield to cover the operating hole of the grounding switch handle and connect it to the shield via a five-proof lock, thereby ensuring safety during operation through an electronic five-proof system.

[0004] The grounding switch itself also has a structure to prevent misoperation, which mainly involves blocking the operating hole of the grounding switch handle with a shielding plate, so that the grounding switch cannot be operated when the circuit breaker is in the working position or closed. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an anti-misoperation structure for grounding switches that combines the anti-misoperation structure of the grounding switch itself with a five-proof lock to improve the safety protection effect.

[0006] This utility model is achieved through the following technical solution: a structure for preventing misoperation of a grounding switch, including a mounting base, wherein a movable shielding device 1 is provided on the mounting base and cooperates with the operating hole of the grounding switch handle, the movable shielding device 1 is connected to a movable driving device, the movable driving device is connected to a controller, and a movable shielding device 2 is also provided on the mounting base and cooperates with the operating hole of the grounding switch handle, the movable shielding device 2 is connected to a five-proof lock.

[0007] Furthermore, the movable shielding device includes a shielding plate, configured such that when the grounding switch is closed, the movable driving device drives the shielding plate away from the operating hole of the grounding switch handle; when the grounding switch is open, the movable driving device drives the shielding plate to block the operating hole of the grounding switch handle.

[0008] Furthermore, the moving drive device is connected to the first shielding plate via an elastic connection structure, the elastic connection structure providing elastic force at least in the moving direction of the first shielding plate.

[0009] Furthermore, the elastic connection structure is selected as a spring, and a cable is provided between the first shield and the moving drive device, with the cable threaded inside the spring.

[0010] Furthermore, the first shielding plate is connected to an outwardly extending pressure tongue, and the second movable shielding device includes a second shielding plate, which is distributed on the outside of the first shielding plate. The second shielding plate is provided with a clearance opening that cooperates with the pressure tongue. The first end of the second shielding plate is hinged to the mounting base, and a five-lock is provided between the second end of the second shielding plate and the mounting base.

[0011] The beneficial effects of this utility model are as follows: A movable shielding device 1, which mates with the operating hole of the grounding switch handle, is provided on the mounting base. The shielding device 1 is connected to a movable drive device, which is connected to a controller. The controller is connected to the controller of the grounding switch, thereby driving the movable shielding device 1 to operate based on the state of the grounding switch. The mounting base also provides a movable shielding device 2, which mates with the operating hole of the grounding switch handle. The movable shielding device 2 is connected to a five-proof lock. The mounting base can be pre-installed with the grounding switch or installed separately later. Integrating the movable shielding device 1 and the movable shielding device 2 on the mounting base provides dual protection and improves the effect of preventing misoperation. Attached Figure Description

[0012] Figure 1 Example 1 is a schematic diagram of the operation mode of the grounding switch handle;

[0013] Figure 2 This is a schematic diagram of the structure under the shielding state.

[0014] Figure 3 This is a schematic diagram of the structure with the baffle plate detached.

[0015] Figure 4 This is a schematic diagram of the mobile drive device.

[0016] The components include: 1. Mounting base; 2. Pressure tongue; 3. Grounding switch handle; 4. Connecting ear; 5. Second shield; 6. Five-proof lock; 7. Guide port; 8. Electric push rod; 9. Spring; 10. Cable; 11. First shield. Detailed Implementation

[0017] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0019] Example 1

[0020] like Figure 1-4 As shown, an anti-misoperation structure for a grounding switch includes a mounting base 1. The mounting base is connected to electrical equipment. The mounting base can be a sheet metal part and is connected to the electrical equipment by bolts. Specifically, it is installed at the operating hole of the grounding switch handle. It can be pre-installed with the grounding switch or installed separately later.

[0021] The mounting base is equipped with a movable shielding device 1 that mates with the operating hole of the grounding switch handle. The shielding device 1 is connected to a movable drive device, which is connected to a controller. Specifically, a long guide opening 7 is pre-drilled on the mounting base corresponding to the operating hole of the grounding switch handle. The grounding switch handle 3 can extend inward into the guide opening and then into the operating hole to operate the grounding switch. The movable shielding device 1 includes a shielding plate 11, which is connected to an outwardly extending pressure tongue 2. The pressure tongue allows for manual operation of the shielding plate 1. The inner end of the pressure tongue has a groove that mates with the side wall of the guide opening to guide the movement of the shielding plate 1. The movable drive device is an electric push rod 8, and the controller can be an electrical device. The controller is configured such that when the grounding switch is closed, the moving drive device moves the shield away from the operating hole of the grounding switch handle, ensuring the electrical equipment is grounded and safe operation is possible; when the grounding switch is open, the moving drive device moves the shield to block the operating hole of the grounding switch handle, ensuring the electrical equipment is not grounded and safe operation is not possible. In electrical equipment, such as the KYN28 type medium-voltage switchgear, the grounding switch can automatically control its operation. When the grounding switch is automatically opened, the moving drive device moves the shield to block the operating hole of the grounding switch handle; when the grounding switch is automatically closed, the moving drive device moves the shield away from the operating hole of the grounding switch handle, thus achieving automatic safety control. Combined with the five-proof lock, the safety factor is improved.

[0022] The mounting base is also equipped with a movable shielding device 2 that mates with the operating hole of the grounding switch handle. The movable shielding device 2 is connected to a five-proof lock 6. Specifically, the movable shielding device 2 includes a shielding plate 2 5, which is installed on the outside of the shielding plate 1. The shielding plate 2 is machined with a clearance opening that mates with the pressure tongue. For ease of manufacturing, the shielding plate 2 is machined into a U-shape to avoid the shielding plate 1. The first end of the shielding plate 2 is hinged to the mounting base, and a five-proof lock is installed between the second end of the shielding plate 2 and the mounting base. A connecting ear 4 that mates with the second end of the shielding plate is installed on the mounting base. By cooperating with the safety control system of the electrical equipment through the five-proof lock, the safety performance is improved. Either the shielding plate 1 or the shielding plate 2 can block the operation of the grounding switch handle, and the shielding plate 2 does not affect the automatic operation of the shielding plate 1.

[0023] In this embodiment, the mobile drive device is connected to the first shielding plate through an elastic connection structure. The elastic connection structure provides elastic force at least in the moving direction of the first shielding plate. Specifically, the elastic connection structure is selected as spring 9. After maintenance is completed, when the grounding switch is disconnected by operating the grounding switch handle, the grounding switch handle does not leave the grounding switch handle operating hole, thus blocking the first shielding plate. The spring forms an elastic buffer. After the grounding switch handle leaves the grounding switch handle operating hole, the first shielding plate blocks the grounding switch handle operating hole under the drive of the spring. A cable 10 is installed between the first shielding plate and the mobile drive device. The cable is inserted into the spring. The compression of the spring is controlled by the cable, so that the spring is in a compressed state in the initial state, thereby controlling the elastic force.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 structure for preventing misoperation of a grounding switch, characterized in that, The device includes a mounting base, on which a movable shielding device 1 is provided that mates with the operating hole of the grounding switch handle. The movable shielding device 1 is connected to a movable drive device, which is connected to a controller. The mounting base is also provided with a movable shielding device 2 that mates with the operating hole of the grounding switch handle, and the movable shielding device 2 is connected to a five-proof lock.

2. The anti-misoperation structure for grounding switches according to claim 1, characterized in that, The movable shielding device includes a shielding plate, configured such that when the grounding switch is closed, the movable drive device moves the shielding plate away from the operating hole of the grounding switch handle; when the grounding switch is open, the movable drive device moves the shielding plate to block the operating hole of the grounding switch handle. 。 3. The anti-misoperation structure for grounding switches according to claim 2, characterized in that, The moving drive device is connected to the first shielding plate via an elastic connection structure, which provides elastic force at least in the moving direction of the first shielding plate.

4. The anti-misoperation structure for grounding switches according to claim 3, characterized in that, The elastic connection structure is selected as a spring, and a cable is provided between the first shield and the moving drive device, with the cable threaded inside the spring.

5. The anti-misoperation structure for grounding switches according to claim 2, characterized in that, The first shielding plate is connected to an outwardly extending pressure tongue. The second movable shielding device includes a second shielding plate, which is distributed on the outside of the first shielding plate. The second shielding plate is provided with a clearance opening that cooperates with the pressure tongue. The first end of the second shielding plate is hinged to the mounting base, and a five-lock is provided between the second end of the second shielding plate and the mounting base.

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