四连杆机构的设计是支架架体设计的核心,四连杆设计的好坏,决定了顶梁运动轨迹。决定了连杆和掩护梁的受力,也决定了支架轮廓尺寸的变化和大小。一.四连杆机构设计的几个要点1·四连杆下铰点不宜太低,太低安装销子困难,建议铰点E至少高出地面250毫米以上,但是下铰点太高底座笨重。2·四连杆的上铰点可以在掩护梁内,也可以移到梁外,上铰点在梁内易削弱主 Four-bar linkage design is the core of the stent frame design, four-link design is good or bad, determines the top beam trajectory. Determine the connecting rod and cover beam force, but also determines the size and size of the stent contour changes. A four-link mechanism design of the few points 1 · 4 connecting rod hinge point should not be too low, too difficult to install the pin, the proposed hinge point E at least 250 mm above the ground, but the lower hinge point too bulky . 2 · four-link the hinge point can be within the shield beam can also be moved to the beam, the hinge point in the beam easy to weaken the main