本文介绍了作为日本建筑起重机主流的动臂变幅塔式起重机的安全措施,叙述了它的考虑方法及各种安全装置的简要情况。一、各种安全装置1.防止过度提升的限位装置在起吊负荷时,为了防止卷筒的过卷使吊钩碰上臂架而损伤各部件,有两种方式进 This article describes the safety measures of the boom-type luffing tower crane, which is the mainstream of construction cranes in Japan, and describes its consideration methods and the brief status of various safety devices. First, a variety of safety devices 1. Limiting device to prevent excessive lifting When lifting the load, in order to prevent the overwound roll to make the hook hit the boom and damage the parts, there are two ways