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Connex South Eastern Class 423 at Waterloo East in February 2003 c2c Class 312 at Shoeburyness in March 2003. A slam-door train or slammer is a set of diesel multiple units (DMUs) or electric multiple units (EMUs) that were designed before the introduction of automatic doors on railway carriages in the United Kingdom and other countries, which feature manually operated doors.
The automatic door used a mat actuator. In 1960, they co-founded Horton Automatics Inc and placed the first commercial automatic sliding door on the market. [5] With the invention of the Gunn diode, microwave motion detectors became common in automatic doors in the 1970s. [6] [7] In 1980, the first automatic door using an infrared sensor was ...
The operator is placed in the space above the sliding door. An electric motor, geared down to get a lower speed and a higher torque, drives a pulley at one end of a belt. The door is clamped to the belt. To open the door, the motor turns the pulley, which in turn turns the belt, which in turn drags the door. To close the door, the reverse occurs.
Each car has five double leaf, electronically operated, plug-sliding doors. The three center doors have an open width of 1,255 mm (4 ft 1.4 in) while the two end doors at 861 mm (2 ft 9.9 in). The doors have a height of 1,900 mm (6 ft 3 in).
The backbone of any electric gate, whether automatic or not, is the electric gate motor, two distinct motor types exist hydraulic, or electromechanical. This is the electric device which actually enables the electric gate to open and close without having to manually push the gate.
A folding door can have an electric folding door mechanism or manually operated. It is widely used on some older model city buses, mini-buses and school buses that have no air sources. Its features a whole frame design which can give it superior performance and excellent durability. It can be used in extremely hot and cold climates. Folding doors
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Some sliding doors run on a wall-mounted rail, like this one Sliding doors in a modern wardrobe. The 'top-hung' system is most often used. The door is hung by two trolley hangers at the top of the door running in a concealed track; all the weight is taken by the hangers, making the door easier to move.