Rotary speed reducer with mechanical limiting function

The utility model discloses a rotary speed reducer with mechanical limit, which comprises a speed reducer, a casing, a rotary support, a worm, an outer ring stop block and an inner ring limit block, the rotary support comprises an inner ring and an outer ring, the rotary support is arranged inside the casing, and the inner ring is connected with the casing through a fastening bolt and a taper pin;the speed reducer power source is connected with the worm through a key, and the worm is fixed in the shell through a bearing; wherein the outer ring stop block is embedded and fixed on the slewing bearing outer ring through the set screw, and the inner ring limiting block is fixed on the slewing bearing inner ring through the socket head cap screw. When the inner ring and the outer ring of the slewing bearing rotate relatively, due to the fact that the outer ring check block and the inner ring limiting block interfere with each other, rotation is limited within the installation angle range. 本实用新型公布了一种自带机械限位的回转式减速机，包