桥式类型起重机在运行过程中出现的与轨道方向垂直的水平侧向力计算是一个有待解决的课题。由制动载重小车所产生的侧向力是比较次要的。本文所探讨的侧向力是由起重机大车歪斜运行产生的作用在轮缘或水平轮上的水平力(或称之为卡轨力)。计算起重机的端梁、门腿、车轮部件以及平衡架、平衡臂等的受力均应考虑侧向力,计算起重机的运行阻力时也应计及此侧向力。对于支承起重机的轨道梁及其土建结构,侧向力的影响将更大。 The calculation of the horizontal lateral force perpendicular to the track direction that occurs during the operation of a bridge type crane is a subject to be solved. Lateral forces generated by the brake trolley are of lesser importance. The lateral forces discussed in this paper are horizontal forces acting on the rims or horizontal wheels (or caliper forces) resulting from the crooked operation of a crane cart. Calculation of the crane crane end beam, door legs, wheel components and balance frame, balance arm and other forces should consider the lateral force, calculate the operational resistance of the crane should also take into account the lateral force. The impact of lateral forces will be greater for the rail beam supporting the crane and its civil structure.