对人员运输设备的维护和运行,不管怎样注意,也难以避免意料之外的复杂情况,因此还有发生事故的可能。在英国就曾发生过两起这样的事故:一起是在玛克汗姆煤矿,另一起是在伦敦的摩尔盖特井下运输系统,这两个案例颇有教益。前者是因为提升机的制动闸机械故障造成的,后者是由于人员明显失误造成的。一种叫作《赛尔德》的新型制动缓冲系统,克服了许多与原有制动器设计有关的各种缺点。例如,在竖井广泛装设的简单的锥型木楔和已经使用的切割罐道木或钢罐道的多齿或单齿卡爪,以及一些靠摩擦的各种类 Maintenance and operation of personnel transport equipment, no matter what attention is also difficult to avoid unforeseen complications, so there is the possibility of an accident. Two such accidents have occurred in the UK: one at the Maxwell Coal Mine and the other on the Underground Transport System in London, the Morgate, both of which serve as examples. The former is due to mechanical damage to the brakes of the hoist, which is caused by a significant crew error. A new type of brake damping system called “Saierd” overcomes many of the shortcomings associated with the design of the brakes. For example, simple conical wedges widely deployed in the shaft and multi-tooth or single-tooth jaws that have been used to cut wood or steel cans, as well as various types of friction-