快速接地开关装置
By using modular design and optimizing component connection methods, the problems of large size and complex structure of fast grounding switchgear have been solved, achieving miniaturization and stable and reliable operation characteristics, which facilitates the installation and maintenance of power system equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG MINGYANG ELECTRIC CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing fast grounding switchgear suffers from problems such as large size, complex structure, complicated assembly process, and unstable connection between moving and stationary contacts, which affect the reliability of power system equipment.
A fast grounding switch device was designed, comprising components such as housing, drive shaft, inner crank arm, shaft pin, moving contact, stationary contact, and insulator. It adopts a modular design and is fastened by spline connection and locking screws to reduce the number of parts. The inner wall of the stationary contact is provided with contact finger groove and guide ring, and the front end of the moving contact is provided with copper-tungsten contact, and the surface is silver-plated to reduce arc erosion.
It achieves miniaturization, simple structure, convenient operation, stability and reliability of the device, facilitates installation, commissioning and maintenance, and improves the operational safety of power system equipment.
Smart Images
Figure CN224519728U_ABST
Abstract
Claims
1. A fast ground switch device, characterized by, It includes a housing, a drive shaft, an inner crank arm, a pin, a moving contact, a stationary contact, and an insulator. The stationary contact is mounted on the housing via the insulator, and the moving contact is correspondingly mounted in the housing. The drive shaft is connected to one end of the inner crank arm, and the moving contact has an oblong hole corresponding to the pin. The pin is connected to the other end of the inner crank arm and is mounted in the oblong hole.
2. The fast ground switch apparatus of claim 1, wherein, The inner wall of the stationary contact is provided with several finger grooves, and spring fingers are provided in the corresponding finger grooves.
3. The fast ground switch apparatus of claim 2, wherein, The surface of the finger groove is silver-plated.
4. The fast ground switch apparatus of claim 1, wherein, The inner wall of the stationary contact is provided with several guide rings.
5. The fast ground switch apparatus of claim 1, wherein, The insulator consists of a conductive plate and an epoxy resin flange. The conductive plate is fastened to the stationary contact by screws; the epoxy resin flange is fastened to the housing flange by double-ended screws.
6. The fast ground switch apparatus of claim 1, wherein, The inner crank arm is equipped with a spline, and the drive shaft and the inner crank arm are tightly connected by the spline. The spline of the inner crank arm has a notch on the outside, and a locking screw is used to fasten the inner crank arm and the drive shaft.
7. The fast ground switch apparatus of claim 1, wherein, The inner crank arm includes a crank arm, an insulating plate, a bushing, and rivets. The crank arm and the insulating plate are connected by rivets. The bushing is located on the insulating plate, and the shaft pin is located in the bushing.
8. The fast ground switch apparatus of claim 1, wherein, The moving contact has a copper-tungsten contact at its front end.
9. The fast groundling switch apparatus of claim 1, wherein, The moving contact surface is silver-plated.