本文分析了绳子绕在圆柱上,绳对圆柱的压力与绳自由端拉力、圆柱截面半径的关系;分析了绕绳对圆柱的摩擦力与绳两自由端拉力的定量关系. In this paper, the relationship between the rope winding on the cylinder, the pressure of the rope-to-column and the pulling force of the free end of the rope and the radius of the cylindrical section is analyzed. The quantitative relationship between the friction force of the roping and the cylinder and the pulling force of two free ends of the rope is analyzed.