Steering linkage device for planetary steering mechanisms

The utility model discloses a steering linkage device for a planetary steering mechanism. The steering linkage device comprises a central transmission big bevel gear (1), a planetary steering mechanism big gear (2), a left planetary steering mechanism (10) and a right planetary steering mechanism (36) which are in bilateral symmetry, a left planetary steering mechanism brake (18) and a right planetary steering mechanism brake (44) which are in bilateral symmetry, and a left half-axle brake (28) and a right half-axle brake (54) which are in bilateral symmetry. The steering linkage device is characterized in that between the planetary steering mechanism brake (18) and the left half-axle brake (28) and between the right planetary steering mechanism brake (44) and the right half-axle brake (54), after the left planetary steering mechanism brake (18) and the right planetary steering mechanism brake (44) are completely separated from each other, the left half-axle brake (28) and the right half-axle brake (54) perform brake, and after the left half-axle brake (28) and the right half-axle brake (54) are completely released, the left planetary steering mechanism brake (18) and the right planetary steering mechanism brake (44) are jointed. The steering linkage device is simple to operate, is difficult to wear, high in working efficiency and good in safety.