Assembly type suspender bolt applied to assembly type suspended ceiling

The assembly type suspender bolt comprises an expansion bolt (1), the bottom of a screw rod (11) of the expansion bolt (1) is fixedly connected with a butt joint column (2), the peripheral wall of the butt joint column (2) is provided with an annular limiting groove (21), the bottom of the butt joint column (2) is fixedly connected with a sinker bar (22), the peripheral wall of a butt joint sleeve (3) is connected with a limiting pin (4) in a penetrating mode, and the limiting pin (4) is fixedly connected with the butt joint sleeve (3). The trigger rod (5) is located in the butt joint sleeve (3), one end of the limiting pin (4) is fixedly connected with a lifting pin (41) located outside the butt joint sleeve (3), the lifting pin (41) penetrates through the peripheral wall of the butt joint sleeve (3) in a clearance mode and abuts against the end of the trigger rod (5), and the bottom of the butt joint sleeve (3) is fixedly connected with the lead screw (6). The collision bolt mounting device has the advantag