Play bottom plate elevating gear

The utility model relates to a play bottom plate elevating gear, including master syncrhronization wheel and synchronizing wheel, the hold -in range is installed between master syncrhronization wheeland synchronizing wheel, and the synchronizing wheel is installed on synchronous wheel seat device, and hold -in range backing plate and hold -in range clamp plate compress tightly to be fixed on thehold -in range, and the slide device is fixed on the hold -in range backing plate, and play the bottom plate guide pillar and install on the slide device, playing bottom plate guide pillar two and allbeing equipped with shockproof glue, balancing weight guide rod seat is located hold -in range one side, is fixed with the balancing weight guide arm on the balancing weight guide rod seat, the balancing weight guide arm is parallel with the hold -in range, install the balancing weight on the balancing weight guide arm, guaranteed the steady high efficiency of hold -in range operation to have coordinated the effect of bott