| 摘要 |
A strong-current fixed contact device of a high-voltage ground switch comprises a base (1); two opposite contact plates (2) are disposed on the base, and the two contact plates are perpendicular to an upper end surface of the base; each of the two contact plates is provided with a support plate (3) whose lower portion is relatively fixed with the base; two sets of coaxially superimposed disc springs (5) are disposed between an upper portion of each support plate and the contact plate on the same side. In the fixed contact device, by disposing two sets of disc springs on single side, a contact area between the contact plate of the fixed contact and a blade of a moving contact increased. The holding capability between the contact plate and the blade of the moving contact is effectively improved; compared with the solution of a single-side single-set disc spring having the same pressure, the present invention improves the service life of the product while ensuring the connection performance of the fixed contact. |
