| 摘要 |
<p>The present utility model discloses transition moving and fixed contact components of an on-load tap-changer, including a transition moving contact component and several transition fixed contacts in coordination with the transition moving contact component, where the transition moving contact component includes upper and lower transition moving contacts; the upper transition moving contact and the lower transition moving contact are electrically connected through a current conducting plate; an upper guiding plate is installed on the upper transition moving contact through a fastening piece; a lower guiding plate is installed on the lower transition moving contact through a fastening piece; the upper and lower guiding plates are connected through a double-screw bolt. The upper and lower rollers that are rotatable around the double-screw bolt are sleeved on upper and lower ends of the double-screw bolt respectively. Diameters of the upper and lower rollers are respectively greater than the width of the upper and lower guiding plates, so as to enable rolling contact to be performed between the upper and lower rollers and groove walls of upper and lower guiding grooves of upper and lower faceplates respectively. The present utility model decreases a friction coefficient between the transition moving contact component and the guiding grooves of the faceplates, enabling the changer to operate more stably and smoothly, which lowers a changer accident rate, improves changer mechanical endurance, and makes a power grid operate securer.</p> |
