A gantry binary synchronization block-type brake, comprising: a gantry bracket comprised by a fixedly connected door-shaped frame; braking arms arranged on two sides of the gantry bracket with lower ends of the braking arms hinged to the gantry bracket; braking shoes connected to the braking arms for frictionally braking a braking wheel; a dual brake releaser secured to the gantry bracket for pushing the two braking arms outward synchronously; braking springs provided on the gantry bracket for pushing the braking arms so as to perform normal-mode braking; a gap adjustment mechanism (10, 14) for adjusting a working gap between the braking shoes and the braking wheel; and a braking pull rod extending between the braking arms, the braking springs, and the gantry bracket for providing the braking springs with a pivot point for force application, wherein the gantry bracket comprises two side frames, a top beam fixedly disposed on the upper ends of the two side frames, and a base connected to lower ends of the two side frames, characterised in that the side frames and the top beam are U-shaped slots with a straight edge and a flat bottom formed by folding and welding a steel plate, the bottom of U-shaped slot faces outward and the opening of U-shaped slot faces inward; a notch is defined in each of two ends of the top face of the top beam for longitudinal insertion and reception of the braking arm; a pull rod connection block is fixed to the top beam; a notch for laterally extending and receiving the braking pull rod and the braking spring is defined in the upper end of the outer side of the side frames; a base is fixedly connected to a lower end of each of the side frames. a gantry bracket comprised by a fixedly connected door-shaped frame; braking arms arranged on two sides of the gantry bracket with lower ends of the braking arms hinged to the gantry bracket; braking shoes connected to the braking arms for frictionally braking a braking wheel; a dual brake releaser secured to the gantry bracket for pushing the two braking arms outward synchronously; braking springs provided on the gantry bracket for pushing the braking arms so as to perform normal-mode braking; a gap adjustment mechanism (10, 14) for adjusting a working gap between the braking shoes and the braking wheel; and a braking pull rod extending between the braking arms, the braking springs, and the gantry bracket for providing the braking springs with a pivot point for force application, wherein the gantry bracket comprises two side frames, a top beam fixedly disposed on the upper ends of the two side frames, and a base connected to lower ends of the two side frames, characterised in that the side frames and the top beam are U-shaped slots with a straight edge and a flat bottom formed by folding and welding a steel plate, the bottom of U-shaped slot faces outward and the opening of U-shaped slot faces inward; a notch is defined in each of two ends of the top face of the top beam for longitudinal insertion and reception of the braking arm; a pull rod connection block is fixed to the top beam; a notch for laterally extending and receiving the braking pull rod and the braking spring is defined in the upper end of the outer side of the side frames; a base is fixedly connected to a lower end of each of the side frames.