Linkage device for preventing feeding fire grate of garbage incinerator from being jammed

The utility model discloses a linkage device for preventing feeding fire grates of a garbage incinerator from being jammed, which comprises a plurality of rows of feeding fire grate systems arranged in parallel, each row of feeding fire grate system comprises a furnace bottom support, a driving piston, a left pulley assembly, a right pulley assembly and a fire grate, the left pulley assembly and the right pulley assembly are fixedly arranged on the furnace bottom support, and the driving piston is arranged on the furnace bottom support. The fire grates are installed on the left pulley assembly and the right pulley assembly, the fire grates can move on the left pulley assembly and the right pulley assembly, the driving pistons are used for driving the fire grates to move forwards and backwards, linkage components are further arranged between the rows of fire grates, and the linkage components enable two adjacent rows of feeding fire grates to form synchronous linkage. The abnormal fire grate can be driven by t