Shake brake mechanism of wheel

The utility model relates to a shake brake mechanism of wheel, including gear shaft, cover on the gear shaft can for gear shaft pivoted master gear and cover on the gear shaft and the brake block in being located the inner chamber at master gear group the one end of gear shaft still threaded connection has and the axial to press the spanner of brake block group, still overlap on the gear shaft and be equipped with sleeve and the shell fragment group that lies in between spanner and the brake block group, its characterized in that: the shell fragment histotope in between brake block group and the sleeve. Compared with the prior art, because the utility model discloses a shell fragment group places between sleeve and brake block group, has kept away from the ratch part of gear shaft promptly this moment, and consequently in the course of the work, shell fragment group can remove along the gear shaft smoothly for the brake action can be gone on smoothly, and because the direct action of shell fragment group organizes in the brake block, the pretension effect is better.