Abstract: The mast hoisting mechanism is one of the important parts of actuating unit when the mast is hoisting. To synchronies the speed of mast hydro-cylinder and rope speed the functional relation model of cylinder trust, piston speed and rope speed is built. Considering the parameters of crawler crane with MATLAB the functional model was simulated. The result shows that this control algorithm can ensure the synchronization of two mechanisms. The innovation method of mechanism synchronization was suggested in this passage and it is valuable in engineering application.

Key words: Crawler crane , Mast , Hoisting mechanism , Traction drum , Synchronization

摘要： 　    桅杆起升机构是履带起重机安装时桅杆起升的重要动力机构。为了使得桅杆油缸升降速度和变幅卷扬收放绳速度按照所需比率同步变化，建立了桅杆顶升油缸推力与变幅钢绳拉力、顶升油缸活塞运动速度与变幅钢绳收放速度间的函数关系，对其进行运动学分析得出其对应的数学模型。结合履带式起重机部分参数，利用ＭＡＴＬＡＢ软件对其函数方程求解。仿真结果表明：该控制算法能够保证两机构间均匀、平稳的同步。为桅杆机构与变幅卷扬机构的同步问题提出了一种新的有效思路和方法，因此具有一定的工程应用价值。

关键词: 　履带起重机 , 　桅杆 , 　起升机构 , 　变幅卷筒 , 　同步