The invention provides a hoisting pulley block mechanism for a tower crane, which comprises two groups of auxiliary hoisting assemblies symmetrically arranged on the crane, two steel wire ropes are provided, and each group of auxiliary hoisting assemblies allows one steel wire rope to pass through; the auxiliary hoisting assembly comprises a fourth pulley, a rope threading hole, a guide part, a third pulley, a second pulley and a first pulley; the fourth pulley is arranged on the bottom surface of the suspension arm and is positioned above the rotary table; the rope penetrating hole penetrates through the wall of the rotary table, and the guiding piece is arranged on the inner wall of the rotary table and below the rope penetrating hole. The second pulley and the third pulley are arranged along the radial direction of the base; the third pulley is close to the center of the turntable; when the crane is hoisted, one end of a steel wire rope is connected with the hoisting end of the hoisting arm, and the other end sequentially penetrates through the fourth pulley, the rope penetrating hole, the main hoisting pulley, the guide piece, the third pulley, the second pulley and the first pulley to be connected to a power unit. When the crane works, the main hoisting pulley is detached, the steel wire ropes extend from the fourth pulley to be connected with the third pulley, and when the rotary table rotates, winding of the two steel wire ropes is avoided.
本发明提供一种用于塔上吊机的吊装滑轮组机构,包括对称设置于吊机上的两组辅助吊装组件,钢丝绳为两根,每组辅助吊装组件均允许一根钢丝绳穿过;辅助吊装组件包括第四滑轮、穿绳孔、导向件第三滑轮、第二滑轮和第一滑轮;第四滑轮设置于吊臂的底面且位于转台的上方;穿绳孔贯穿转台壁,导向件设置于转台的内壁且在穿绳孔的下方;第二滑轮与第三滑轮沿基座的径向设置且第三滑轮靠近转台的中心;吊装吊机时,钢丝绳的一端连接吊臂的起吊端,另一端依次穿过第四滑轮、穿绳孔、主吊滑轮、导向件、第三滑轮、第二滑轮和第一滑轮连接到动力单元;吊机工作时,拆除主吊滑轮,钢丝绳从第四滑轮延伸连接第三滑轮,转台旋转时,避免两根钢丝绳缠绕。
Hoisting pulley block mechanism for tower crane
一种用于塔上吊机的吊装滑轮组机构
13.09.2024
Patent
Elektronische Ressource
Chinesisch
Crane pulley block, crane and crane pulley block adjusting method
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