What are the lift door systems?

Lift door system can be divided into two kinds, installed in the shaft at the entrance to the floor station for the floor door, installed at the entrance to the car for the car door. The floor door and car door can be divided into centre-split door, side door, vertical sliding door, hinged door and so on according to the structure form. In the split door is mainly used in the passenger lift, the side open door in the freight elevator and hospital bed ladder used more commonly, vertical sliding door is mainly used for sundry ladders and large car lifts. Hinged doors are less used in China and more used in foreign residential ladders.
Lift floor door and car door is generally composed of door, rail frame, pulley, slider, door frame, floor can and other components. Door is generally made of thin steel plate, in order to make the door has a certain mechanical strength and rigidity, in the back of the door is equipped with reinforcement. In order to reduce the noise generated by the door movement, the back of the door plate coated with anti-vibration materials. Door guide rail has flat steel and C-type folding rail two kinds; door through the pulley and guide rail connection, the lower part of the door is equipped with a slider, inserted into the slide groove of the floor; door of the lower part of the guide with the floor of the cast iron, aluminium or copper profiles by the production of the goods ladder generally cast iron floor, passenger ladder can be used in aluminium or copper floor.
The door of the car and the floor shall be a door without hole, and the net height shall not be less than 2m.The outer surface of the automatic floor door shall not have a concave or convex part larger than 3mm. (except at the triangular unlocking place). The edges of these recesses or projections shall be chamfered in both directions. Doors fitted with locks should have a certain mechanical strength. In the opening direction of the horizontal sliding door, when the manpower of 150N (without tools) is applied to one of the most unfavourable points, the gap between the doors and between the doors and the columns and lintels shall not be more than 30mm.The net inlet width of the door of the storey shall not be greater than the net inlet width of the car, and the excess on either side shall not be more than 0.05m.