Wear-resistant expansion bolt convenient and fast to use

The utility model discloses a wear-resistant convenient expansion bolt, which belongs to the field of hardware products and comprises a screw head and a screw rod which are fixedly connected, an expansion piece is arranged on the lower section of the screw rod in a sliding manner, a pressing block is arranged in the screw rod in a sliding manner, a driving assembly is arranged in the screw head and comprises a top block and a transmission block, and the transmission block is arranged on the top block. The ejector block is arranged in the screw head in a sliding mode, the ejector block extends out of the screw head and abuts against the screw rod, the transmission block is arranged in the screw head in a sliding mode, and the two ends of the transmission block abut against the ejector block and the abutting block respectively. After the bolt is screwed down, the expansion piece can be automatically ejected out of the screw rod, the expansion anti-loosening effect is achieved, and an expansion pipe does not nee