Connected speed reducer

The utility model discloses a conjoined speed reducer, which relates to the field of speed reducers and comprises a first speed reducer, a second speed reducer and a conjoined rotating part, the first speed reducer and the second speed reducer are connected through the conjoined rotating part, one end of the first speed reducer close to the second speed reducer is provided with a positioning step, and the other end of the first speed reducer close to the second speed reducer is provided with a positioning groove. A connecting part is arranged on the second speed reducer, a through hole is formed in the connecting part, and the end part of the positioning step is arranged in the through hole, so that the connecting part abuts against the positioning step; according to the conjoined speed reducer, the connecting part can be more compact, the impact resistance of the connecting part is enhanced, and the service life is prolonged. 本实用新型公开了一种连体减速机，涉及减速机领域，包括第一减速机、第二减速机以及连体旋转件，所述第一减速机和所述第二减速机通过所述连体旋转件进行连接，其中，所述第一减速