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门式起重机可靠性较低的原因是,机械设备和电气设备零、部件的快速磨损和损坏。下面研究减少门式起重机事故的某些方法。为了对其主要元件的可靠性比较估价,取故障系数:K_i=(n_i)/(∑n_i)100%式中n_i—i元件的损坏引起的故障次数;∑n_i—所有故障的总数。为了说明i元件损坏引起的停车率的特性T_1,引用相对的停车系数:K_n=(T_i)/(∑T_i)100%式中∑T_i——技术故障引起的总停车时间分析莫斯科和列宁格勒河港的门式起重机工作的结果证明:大多数停车是与支承——廻转装置和旋转机构的故障有关。在大多数的情况下,这些故障是慢速轴的扭转、
Gantry cranes are less reliable because of the rapid wear and tear on parts and components of machinery and electrical equipment. Here are some ways to reduce gantry accidents. In order to evaluate the reliability of its main components, take the fault factor: K_i = (n_i) / (Σn_i) 100% where n_i-i element damage caused by the number of failures; Σn_i- the total number of all failures. In order to illustrate the characteristics of parking rate caused by component i damage T_1, the relative parking coefficient is quoted as: K_n = (T_i) / (ΣT_i) 100% Where ΣT_i - Total parking time due to technical failure Analysis Moscow and Leningrad As a result of the gantry crane at the river port, it proved that most of the parking is related to the failure of the bearing-swivel device and the rotating mechanism. In most cases, these faults are the twisting of the slow shaft,