In order to improve the poor prediction of monitoring anti-fall braking status due to the post-accident recognition of the sensing signal and ignore of the pre-war impact mechanical characteristics of brake rope,a method of monitoring and warning the fall arrest braking status of the fall arrest device for aerial work is proposed by introducing the impact mechanical characteristics of the brake rope.The impact mechanics of the brake rope of the fall arrester is analyzed,and the mechanical characteristics are introduced into the relevant conditions of the fall arrest braking process.According to the braking deceleration,braking force and braking distance,the threshold range of the fall arrest braking status is established.Different sensors are used to collect the state data changes during the anti-falling braking process,and the actual anti-falling braking force is compared with the threshold interval to determine whether an early warning is needed.The experimental results show that the proposed method has high precision of condition monitoring and early warning.
关键词
高空作业/防坠器/冲击力学模型/制动状态监测/预警/制动距离
Key words
working at heights/falling protector/impact mechanical model/braking status monitoring/early warning/braking distance
维普
万方数据