GJ993227 SS 型货用施工升降机防坠安全装置的选择及改进[刊,中]/马仲安//建筑机械.—1998,(7).—6～7根据安全可靠、低成本等原则,优选了滑销式和楔块式两种防坠安全装置,并对该防坠安装装置进行改进,改进后的两种机型经多个 GJ993227 Selection and improvement of anti-fall safety device for type SS construction lifts [Issue,] / Ma Zhongan // Construction Machinery.-1998, (7) .- 6 ~ 7 According to the principles of safety, reliability and low cost, Pin and wedge-type two fall safety devices, and the anti-fall installation device to improve the improved two models by multiple