为了节省辅助功率,减少空气压缩机(以下简称风泵)的空转磨耗,我段在东风、东风_3型内燃机车的中变速箱内普遍加装了液力偶合器.在运用中偶合器经常出现故障,需要风泵工作时风泵不打风,不需要风泵工作时又打风不止.因偶合器作用不良,曾造成多次机破、临修.机车检修后常因偶合器故障交不了车.影响了机车的正常运用,增大了检修工作量. In order to save the auxiliary power and reduce the idling abrasion of the air compressor (hereinafter referred to as the wind pump), I generally installed the fluid coupling in the middle gearbox of Dongfeng and Dongfeng-3 diesel locomotives. In operation, the coupling often Failure occurs, the need to pump the wind pump does not fight the wind, do not need to work when the wind pump to fight the wind more than due to bad coupling, has caused multiple broken machine, temporary repair. Locomotive maintenance often due to coupler failure Can not affect the normal use of locomotives, increased maintenance workload.