| 摘要 |
<p>A position locking device for a draw-out circuit breaker includes a screw rod (1), a catching plate (4), a positioning plate (8), a locking plate (6), and a push rod (2). The screw rod has key ways (12). The catching plate has a catching plate hole (42) and a protrusion (4) that can be inserted into the key ways. Positioning notches for limiting OFF, TEST, and ON positions of the circuit breaker are formed on the top surface of the positioning plate, and corresponding protruding platforms are disposed on the bottom surface. One end of the locking plate bears against the bottom surface of the positioning plate, and the other end is locked to or unlocked from an outward protruding platform of the catching plate. One end of the push rod passes through the catching plate hole, and has an inclined surface. When the push rod is pushed, the inclined surface makes the catching plate leave the key ways. The position locking device is structurally simple and reasonable, secure, reliable, and convenient to operate. The cost for manufacturing, installing or maintaining the device is lowered.</p> |
