Tronzadora con un dispositivo de proteccion de seguridad que comprende una base para colocar una pieza que se cortara, un brazo de soporte, una hoja de corte, una proteccion fija en forma de abanico, una proteccion movil, un brazo de extension

摘要

A cutting-off saw with a safety protection device, including a base (4) for placing a workpiece to be cut; a support arm (9) is arranged on the base (4); a cutting blade (5) is coupled to the support arm (9) by a driving head; a fan-shaped fixed guard (2) and a movable guard (3) are configured to enclose the cutting blade (5) and can be combined into a single disc; an extension arm (10) is coupled to a top portion of the support arm (9); the movable guard (3) is coupled to one end of a guard connecting rod (7); the other end of the guard connecting rod (7) is formed into an arc-shaped elbow and coupled to a stop button (13) and the extension arm (10) by a pivot screw (11). An arc-shaped bayonet (14) having a radian matching with that of the arc-shaped elbow of the guard connecting rod (7) is arranged on a lower portion of the stop button (13). It ensures that the movable guard will never be turned upwards during the operation of loading or unloading a workpiece by definitely locking the guard connecting rod, thereby eliminating the potential safety hazard in the prior art that it is possible for the movable guard to be turned upwards and hence lead to an accident; and it has a simple structure and may be easily assembled.