Rotating encoder for reversing chassis

A rotary encoder used for reversing chassis comprises a rotor central shaft, a ring gear (1) surrounding the rotor central shaft, an upper bodywork (2) equipped on the rotor central shaft and a rotary encoder (3) equipped on the upper bodywork (2). The ring gear (1) is fixed on chassis. The ring gear (1) is in mesh with gear (5) on gear shaft (4), the gear shaft (4) is actively equipped on the upper bodywork (2) with rotation center of rotor central shaft, and one end of the gear shaft (4) is linked to the input axis of the rotary encoder (3). The rotary encoder used for reversing chassis is accurate in reposition, stable in operating characteristic, low in maintenance costs, and at the same time has high precision in measuring the angle of rotation.