球型支座转动机构研究及设计

针对球型支座在转动时，侧面滑动副由面接触变为线接触，易带来摩擦副表面破坏的问题，为横向活动支座增加了转动机构，该转动机构主要是在上、下支座板之间设置转动块，转动块一侧固定滑动材料与上支座板对摩，实现支座的横向位移，另一侧与下支座板的圆弧凸缘接触，实现支座的转角要求。该转动机构不仅避免了支座有转角时摩擦副的破坏，同时也满足支座的位移和转角要求。通过对支座运动及受力状态的分析，找出了转动机构的受力最不利状态，并对此状态下的上支座板挡块、滑板及接触凸缘进行了应力计算，计算结果均满足设计要求。

Research and Design of Rotating Mechanism of Spherical Bearing

The side sliding contact of Spherical bearing becomed line from surface when bearing was rotated, this easied to bring about the destruction of the friction surface. To solve this proble, the rotation mechanism is added in the laterally movable bearing in this paper. The mechanism was provided a rotation block between the upper and lower plate, sliding material that rubbed with the upper plate was fixed on the side of rotation block, it was used to completed the bearing lateral displacement. The other side of rotation block contacted with the arc of lower support plate, it was used to completed the bearing angle. The rotating mechanism can not only avoid the destruction of friction surface when bearing was rotated, but also can meet the bearing requirements of displacement and rotation. Based on the analysis of bearing movement and force state, the most unfavorable state of rotation mechanism was found. On this state, the upper plate stopper, skateboards and arc stress is calculated in this paper, the conclusion is that the calculation results meet design repuirements.