Gantry crane soil box lifting hook and method for subway construction

The invention provides a subway construction gantry crane soil box lifting hook and a method, relates to the field of construction equipment, and aims to solve the problem that a lifting hook is easy to loosen and fall off in the hoisting process of a gantry crane at present, an L-shaped stop piece is adopted, one section serves as a trigger rod for passively receiving the effect of a soil box connecting position, and the other section serves as a follow-up stop rod. And after the stop lever reaches the communication position of the blocking locking hole and the imbedding hole, locking is completed through the lock pin, so that the connection state is locked, uncontrollable separation of the lifting hook and the soil box is prevented, and the connection stability is improved so as to ensure the safety in the operation process of the gantry crane. 本发明提供一种地铁施工龙门吊土箱吊钩及方法，涉及施工设备领域，针对目前龙门吊吊运过程中吊钩容易松动脱落的问题，采用L型的止挡件，一段作为被动接受土箱连接位置作用的触发杆，另一段作为随动的止挡杆，在止挡杆到达封堵锁定孔与置入孔连通位置后，由锁销完成锁定而实现对连接状态的锁定，防止吊钩与土箱的不可控脱离，提高连接稳定性以保证龙门吊运