Stable transfer device suitable for test tube rack

The utility model discloses a stable transfer device suitable for a test tube rack. The stable transfer device comprises a transmission part, a supporting part, a loading part and a push-pull part, the transmission part comprises a rotating motor, an upper fixing block, a transmission belt and a transmission wheel; the supporting part comprises a bottom plate, a vertical sliding rail, a horizontal sliding rail and a lower fixing block. The loading part comprises a supporting plate and a driven wheel, the supporting plate is fixed on the vertical sliding block, and the driven wheel extends out of the supporting plate; the push-and-pull part comprises a track plate and a push-and-pull motor fixed on the bottom plate, the track plate is provided with an obliquely upward groove just allowing the driven wheel to move, and the push-and-pull motor is connected with the track plate and performs horizontal push-and-pull movement. According to the stable transfer device, independent control over horizontal and vertical