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当前在提升机上采用的两级制动系统,不管载荷大小和运行方向,均可保证获得己确定的制动力矩。在设备处于不同的工作状态时,由第一级制动过渡到第二级制动是以时间为函数来实现的,因此,在重物下放时,第一级制动效果欠佳,其平均减速度低于技术操作规程上要求的数值。如果在下放重载时,保证了规定的减速度,则在上提重载时将产生过大的制动力矩使机器骤然停止,结果在小倾角的井筒中将发生容器(串车)冲击钢绳现象,随
The current two-stage braking system used on the hoist ensures that the determined braking torque is guaranteed regardless of the load size and direction of travel. When the equipment is in different working conditions, the transition from the first stage brake to the second stage brake is realized as a function of time. Therefore, when the heavy load is released, the first stage brake effect is not good and the average The deceleration is lower than the value required by the technical codes of practice. If the specified deceleration is assured during the decentralized load, an excessive braking torque will be applied to cause the machine to stop abruptly when the heavy load is applied. As a result, the container (serial train) impact steel will occur in the small-angle wellbore Rope phenomenon, with