Parts of locomotives or rolling stock

Description

DSB Maintenance has the need new Rubber Fronts for litra MF (IC3) and ER (IR4). The existing Rubber Fronts are continually replaced either due to wear or due to accidents. The two types of litra share the same model of Rubber Front. DSB has 96 train sets of the type MF (IC3) and 44 of the type ER (IR4). The train sets can be coupled when there is need for more capacity in the trainset. The Rubber Frons are placed on each end of the trainset and are used to couple the trainsets. The Rubber Fronts is a hollow rubber piece that surrounds the front door. The pressure in the rubber front is adjusted so that it is adapted to the different operating situations. This is done partly by a control/regulation, via the train computer (TC) and partly by a TC independent secondary control. The geometry of the rubber front and the current pressure, depending on the operating situation, partly ensure that the rubber front as front has as little air resistance as possible and that two interconnected fronts are constantly in contact with each other during the normal movements of lateral displacement, vertical dis-placements and curve travel. This is to ensure that they form a tight and secure passage for passengers and staff. A mechanical walkway support is built into the bottom of the rubber front. The walkway support supports the tread at interconnected fronts so that it stays level and safe to step on during normal movements. When coupling, the rubber front is vented and sucked ‘flat’ to ensure that the front-end couplings can be mechanically engaged and the electrical contact boxes are pushed out and coupled together. The automatic couplings also ensure that the rubber fronts are not damaged. The rubber front of the train sets serves two purposes, partly to form a rounded end of the train, which ensures an adequate air flow (Cw value for single train sets is 0.75 and 0.50 for several interconnected train sets) at high speeds and partly forming a noise- and waterproof transition between two train sets when these are coupled. DSB commits to place orders for minimum 75 Rubber Fronts in the Term (contract period).