ZL26B成型机鼓轮防护罩下坠保护装置设计及应用

Design and Application of an Anti-Falling Protection Device for the Drum Guard of ZL26B Maker

摘要: 在成型机鼓轮防护罩的检修盖开合机构中，传统防护装置依赖弹簧气撑杆维持检修盖开启状态，存在气撑杆老化失效导致检修盖意外下坠的安全隐患。本装置通过在防护罩侧壁增设可旋转的L形支架，配合检修盖上设置的水平定位凸台，形成双重支撑结构：当检修盖开启时，L形支架受凸台下端面限位形成机械支点，即使弹簧气撑杆失效仍能保持检修盖稳定开启状态。该设计采用机械锁定替代单一气弹簧支撑，有效解决因气撑杆老化引发的下坠风险，具有结构可靠、维护便捷的特点，显著提升设备检修作业安全性，避免因防护罩失控造成的工伤事故。

Abstract: In the opening and closing mechanism of the maintenance cover for the drum guard of the maker, traditional protection devices rely on gas spring rods to maintain the open state of the cover, posing a safety hazard where the cover might accidentally fall due to aging and failure of the gas spring. This device addresses this by adding a rotatable L-shaped bracket to the guard’s side wall, working in conjunction with a horizontal positioning boss installed on the maintenance cover to form a dual support structure. When the maintenance cover is open, the L-shaped bracket is limited by the lower end face of the boss, creating a mechanical pivot point. This ensures the cover remains stably open even if the gas spring fails. This design replaces the single gas spring support with a mechanical lock, effectively eliminating the falling risk caused by gas spring aging. It features reliable structure and convenient maintenance, significantly enhancing the safety of equipment maintenance operations and preventing work-related accidents caused by uncontrolled guard movement.