The utility model aims at providing an adjust the distance between the friction wheel set, guarantee the friction wheel set to the clamp force of friction plate and simple structure, convenient operation's closing device of plane movement type mechanical type parking equipment's friction pulley, including one end and frame constitution rotary type complex lath shaped support, the support both ends are provided with mainly, driven sprocket, and drive?sprocket links to each other with the power shaft, and main, driven sprocket is last, and the driven sprocket coaxial coupling has the friction pulley, is provided with track adjustment mechanism on the support around establishing the driving chain, and the regulating wheel makes two tight rectangular form friction plates that carry the sweep below of friction pulleys clamp apart from adjustment mechanism, and friction pulley and friction plate constitution friction formula are rolled and is cooperated. The one end of support can for the frame at horizontal rotation in surface, and two friction pulleys set up on the support, the distance that track adjustment mechanism adjusted between the support can realize the regulation to two friction pulley intervals to make the friction pulley press from both sides the friction -tight board and drive the friction plate and remove, it is simple swift.