A prevent slippage aluminum alloy ladder head for high -voltage overhead circuit overhauls

The utility model provides a prevent slippage aluminum alloy ladder head for high -voltage overhead circuit overhauls, including the aluminum alloy ladder headstock body with two sets from blocking device, the top of the aluminum alloy ladder headstock body is equipped with the dop of taking the pulley, two sets set up in the both sides of the aluminum alloy ladder headstock body respectively andlock with the dop from blocking device and are connected, include the locking head from blocking device, the elasticity piece that resets, sliding sleeve and extension spring, the one end of locking head is passed through the pin joint and is articulated in the end of dop, the sliding sleeve is fixed in on the aluminum alloy ladder headstock body, the first tie point of locking head is connected to the one end that elasticity resets, the other end that elasticity resets the piece is fixed in on the position of the aluminum alloy ladder headstock body near the dop end, the second tie point of locking head is connected