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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.
Sliding plug doors on a bus have pantographic hinges that move the door panel outwards from its plug socket and then parallel to the side of the bus to clear the opening. On closing, the door is wedged and locked into the opening. This arrangement makes a very good airtight and soundproof seal and is commonly found on coaches.
An articulated bus is a long vehicle and usually requires a specially trained driver, as maneuvering (particularly reversing) can be difficult. The trailer section of a "puller" bus can be subject to unusual centripetal forces, which many people can find uncomfortable, although this is not an issue with "pushers".
Four-bar linkage. In the study of mechanisms, a four-bar linkage, also called a four-bar, is the simplest closed- chain movable linkage. It consists of four bodies, called bars or links, connected in a loop by four joints. Generally, the joints are configured so the links move in parallel planes, and the assembly is called a planar four-bar ...
Types. There are 3 basic types of swing door operators: Full Energy – It opens and closes the door at full speed. Low Energy – It opens and closes the door at reduced speed to limit the kinetic energy of the moving door to levels deemed safe for disabled users. Power Assist – This is a version of the low-energy operator.
Platform screen doors at the Fuda Station in Tokyo, Japan. Platform screen doors (PSDs), also known as platform edge doors (PEDs), are used at some train, rapid transit and people mover stations to separate the platform from train tracks, as well as on some bus rapid transit, tram and light rail systems.
An interlock is a feature that makes the state of two mechanisms or functions mutually dependent. It may consist of any electrical or mechanical devices, or systems. In most applications, an interlock is used to help prevent any damage to the machine or to the operator handling the machine.
Unlocked or open doors, will trigger a brake locking mechanism on the bus to prevent it from moving while someone could possibly be entering or exiting the bus, when the door is closed, the lock will release, this is mostly implemented on rear doors, not really on front doors, since the driver will be paying attention to the front door.
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