The invention relates to an installation method of a derrick crane variable-amplitude winding system. The mounting method comprises the following steps that when the variable-amplitude steel wire rope is threaded, the variable-amplitude steel wire rope is wound into a pulley block and enters a winding drum; the variable-amplitude steel wire rope is mounted when the boom is in a 3-degree shelf state; after the cantilever crane is lifted to 12 degrees, the variable-amplitude steel wire rope is retracted; the steel wire rope is tightened after the boom is lifted to 16.65 degrees; main hook rope threading is conducted, specifically, the steel wire rope of the main hook is reversely pulled into a pulley block and a main hook winding drum through a guide rope; the two main hook winding drums are oppositely pulled in the reverse direction, and the main hook steel wire rope safety circle number pre-tightening force is achieved; the auxiliary hook steel wire rope is pulled to reversely enter the fixed pulley block and the movable pulley block through the guide rope. The method has the advantages that the angle of the arm support is reduced to 3 degrees during installation, compensation is conducted through the tool guide rope, and redundant waste of the variable-amplitude steel wire rope is avoided; when the main hook is stringed, the two main hook winding drums are oppositely pulled in opposite directions, so that the pre-tightening force of the safety number of turns of the steel wire rope is realized; and in the rope threading process of the auxiliary hook, the movable pulley is prevented from being wound and lifted by the pre-tightening force of the multi-magnification pulley block in the rope threading process.
本发明涉及一种扒杆式起重机变幅缠绕系统安装方法。安装包括以下步骤:变幅钢丝绳穿绳时,变幅钢丝绳缠绕入滑轮组进卷筒:臂架处于3°搁架状态进行变幅钢丝绳安装;臂架抬升至12°后变幅钢丝绳收起;臂架抬升至16.65°后收紧钢丝绳:主钩穿绳:利用引绳将主钩钢丝绳反拉入滑轮组及主钩卷筒;利用两主钩卷筒反向对拉,实现主钩钢丝绳安全圈数预紧力;副钩穿绳:利用引绳牵引副钩钢丝绳反向入定、动滑轮组。本发明的优点在于:安装时臂架角度降低为3°,利用工装引绳进行补偿,避免变幅钢丝绳冗余浪费;主钩穿绳时,利用两主钩卷筒反向对拉,实现钢丝绳安全圈数预紧力;副钩穿绳过程中,避免穿绳过程中多倍率滑轮组预紧力缠绕提升动滑轮。
Installation method of derrick crane variable-amplitude winding system
一种扒杆式起重机变幅缠绕系统安装方法
2025-03-25
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |