A grounding operation switch interlocking device

Abstract

The invention discloses an interlocking device of a ground connection operating switch. The interlocking device of the ground connection operating switch comprises an effort saving device, a connecting shaft and an operation device. The operation device comprises a supporting frame and a supporting seat. An operation screw rod section is arranged on the side, close to the operation device, of the connecting shaft, the operation screw rod section is provided with a movable nut, a limit plate is arranged outside the movable nut, an interlocking piece is arranged below the operation screw rod section, and the limit plate is provided with a working position which is embedded between the supporting seat and the interlocking piece. The effort saving device comprises a mounting seat, the mounting seat is provided with an output shaft, a power output crank arm, an arc-shaped connecting arm and a screw rod driving device. The end, matched with the effort saving device, of the connecting shaft is provided with a driving sleeve, and a push screw rod is arranged in the driving sleeve. The interlocking device of the ground connection operating switch relieves labor of operators, the ground connection operating switch can be prevented from being damaged by overlarge operation force, the ground connection operating switch can be protected effectively, the limit plate of the operation device can be embedded in or drawn out of the space between the supporting seat and the interlocking piece, switching on or off of a breaker by the interlocking piece is achieved, and malicious starting is prevented.

Description

Technical field [0001] The invention relates to an auxiliary device for a cabinet of a power supply and distribution device, in particular to an interlocking device for a grounding operation switch. Background technique [0002] In order to ensure the safety of the system and maintenance personnel during the maintenance of the power supply and distribution equipment, it is necessary to ground the circuit after the power failure. The grounding switch is the most commonly used grounding device. During the operation, the main shaft of the grounding switch needs to be driven to rotate to realize the opening and closing. At present, the bevel gear transmission is mostly adopted in the market. Since different types of earthing switches require different operating forces, when manually operated earthing switches with large operating forces, it is not only difficult to operate, but also the bevel gear is worn and slipped, and the operating handle is often damaged. It also increases the ...

AI Technical Summary

Problems solved by technology

Because the operating force required by different types of grounding switches is not the same, when the grounding switch with large operating force is operated manually, it is not only laborious to operate, but also the bevel gear will be worn and slipped, and the operating handle is often damaged. It also increases the difficulty of equipment maintenance

In addition, in the existing technology, the opening and closing operating handle of the grounding switch is easy to be pulled out, and there is no obvious mark of opening and closing, which can only be judged by the experience of the operator

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