A loose pulley assembly for municipal hoisting machine constructs

The utility model provides a loose pulley assembly for municipal hoisting machine constructs, including pulley body, piston ring, spacer ring, first bearing, first gland, second bearing and second gland, the centre of pulley body is equipped with the via hole, cross the downthehole annular that is equipped with, the piston ring is located in the annular, the spacer ring is located cross downtheholely and with the piston ring is coaxial, first bearing is located the piston ring with one side of spacer ring, first gland is located on the first bearing, the second bearing is located the piston ring with the opposite side of spacer ring, the second gland is located on the second bearing. The utility model provides a loose pulley assembly for municipal hoisting machine constructs adopts two bearing arrangement's pulley, stable in structure. 本实用新型提供了种用于市政吊装机构的滑轮组件，包括滑轮本体、涨圈、间隔环、第轴承、第压盖、第二轴承、以及第二压盖；所述滑轮本体的中间设有过孔，所述过孔内设有环槽，所述涨圈设于所述环槽内，所述间隔环设于所述过孔内并且和所述涨圈同轴，所述第轴承设于所述涨圈和所述间隔环的侧，所述第压盖设于所述第轴承上；所述第二轴承设于所述涨圈和所述间隔环的另侧，所述第二压