An escalator is a machine that carries people up and down floors of a building by way of a motorized chain of linked steps. These steps cycle up and down on a pair of tracks, which are usually connected at the bottom. When people use an escalator, they can move from one floor to another without needing to change their clothing or get off. There are many different kinds of escalators, including indoor and outdoor models.
Landing platform for escalator steps is part of the escalator. Escalators have two main parts: top and bottom platforms. Top platform carries motor assembly and drive gears. Lower platform carries step return gears and return wheels. Ends of truss connect the upper and lower sections. Concrete or steel supports connect truss to landing platform. These steps are equipped with two handrails.
Landing platform for escalator steps is used for moving passengers. These steps can be fixed or moving. Often, escalators have four or more flat steps. The landing platform is usually placed in a place where the escalator is easily accessible. Landing platform for escalator steps is designed to prevent passengers from slipping and falling. It’s important to choose an escalator that can accommodate a wide variety of passengers and needs.
The landing platform is a flat, level surface for passengers to stand before stepping onto the moving steps. It’s hinged to enable easy access for maintenance. A comb plate is positioned between the floor plate and the moving steps. It’s lined with cleats that mesh with matching cleats on the moving steps. These interlocking cleats reduce the gap between the stairs and landing. It also prevents objects from becoming stuck between the moving steps and the landing.
Escalator newels usually terminate in a semi-circle and contain the escalator’s emergency stop and on/off switches. In addition to these features, escalators may have Moving Handrails. These features are mounted at the top and bottom of the escalator and guide the escalator steps. They may also house the Handrail Inlet Safety Device, which controls the movement of the Moving Handrail.
The floor plate of an escalator or moving walk should be imperforated, and the floor plates of both must be openable with a key or suitable tool. The floor plate should be made of a rigid material that can support a force of at least 900 N perpendicular to the line of attachment. The floor plate shall also be able to withstand a force of at least 1,000 N perpendicular to the line of attachment, and shall be in conformance with the relevant standards.
Escalator steps consist of two platforms – a top platform and a bottom platform. The top platform contains the motor assembly and the step return idler sprockets while the bottom one is the comb plate, which anchors the truss to the floor. The floor plate supports the escalator steps and is flush with the finished floor. It is made of oil-filled cast polyamide.
The escalator steps are attached to the floor via step chains, which are similar to bicycle chains. These chains require regular cleaning and consume 600 liters of oil every 10 years. To reduce the amount of oil used in the escalator, most manufacturers now offer a chain that is lubricationfree. This dramatically reduces oil consumption, eliminates the need for expensive oiling devices and significantly reduces downtime.
The floor plate of an escalator step is composed of a comb plate that is located at the upper and lower ends of the step travel. The comb plate protects escalator riders from falling from the escalator and keeps the ribs of the step tread from damaging the passenger’s clothing. The comb plate also serves as the floor plate where the passenger stands before stepping onto the escalator.
An escalator is a moving platform that carries passengers up and down. It has two platforms: the top platform contains the motor assembly and two drive gears; the bottom platform has the step return gears and the return wheels. The two platforms are connected by a truss that is made of steel or concrete. The two ends of the truss are fixed to the landing platforms with steel or concrete supports. There are two handrails on each side of the truss.
There are three types of steps available. Earlier models have a narrow insert, while latest service replacement steps are wider. The latter are interchangeable as a whole, but some customers object to the visual inconsistency. The new steps are available from UNITEC. The customer should choose the latest steps if they are unhappy with the visual difference. The UB and J steps are made of die cast steel.
The maintenance drive unit shall have a manual handset that is connected to an electrical system. The escalator will continue to run at 25 percent of its rated speed until the steps are removed. The handset shall be attached to a ten-foot retractable type cord with a plug connector. The handset shall be plugged into the receptacle in the upper pit of the escalator.
The instantaneous step/skirt index measurements on the escalator shall be made at intervals of 150 mm (6 in.) on both sides of two distinct steps on the inclined portion of the escalator. There shall be at least eight steps between the test steps. As per ASME A17.1 184.108.40.206.20, clearance between the step and skirt shall be measured at intervals not exceeding 300 mm (12 in.) The load gap measurement shall be made separately on each side of the escalator.
The antislide device for escalator stairs is a safety device for escalator steps. It is composed of a wedge-shaped recess and a lateral safety device that closes the air gap between the step and the base only when the step is at risk of falling. In addition, it does not continuously brush against the base, which increases driving power and increases noise.
The safety device is a synthetic material that is elastomeric and has a low coefficient of friction. It is designed so that the outermost rib touches the handrail base when it is under load. The ribs are attached to an inwardly arched wall or closure flange that closes toward the base and tilts towards the stepping side. This allows the safety device to function in both directions, without compromising the level of safety.
The antislide device is characterized by two components. One of them is a wedge-shaped recess that includes an axis of rotation 10.5. The other component is a solid part of the step. The wedge-shaped recess is covered with an inwardly arched closing wall 10.6. A gap of approximately one-half inch between the solid portion of the step and the base 5 is enlarged to accommodate a wedge-shaped air gap. The combplate impact switch is designed to stop the escalator if a foreign object is caught between the step body and the solid portion.
The antislide device for escalator stairs is a safety device. Its body has a rib that closes a recess where the handrail enters the escalator. The device automatically shuts down the escalator if something becomes caught in the space. It also features a skirt brush that keeps loose clothing away from the moving stairs and from curious hands from touching the side panel. In addition, the raised edge of the device discourages passengers from standing too close to the edge of the step.
Continuous metal chain
In escalator systems, the steps are connected in a series, creating a flat platform at the top and bottom. Each step is connected to a chain with a rotating wheel at the end of it, which is pulled along a main drive gear. The trailing wheels follow the trailing wheel track. The wheels are usually metal and are connected to a swivel system that rotates them.
Generally, escalator tracks guide the steps as they move up and down the incline. The steps run along two tracks: one at the bottom and one at the top. When the escalator is used, the back wheels move out of the curved section of the truss, where they fall into a flat arrangement. Once at the bottom landing, the steps re-enter the staircase configuration.
The stairway treads shall be made of extruded aluminum or die-cast aluminum and ribbed to provide maximum traction. The treads shall be finished in the same manner as the combplates. The motor and drive mechanism shall be mounted within the truss envelope at the upper end of the escalator and outside the upper head section of the escalator. The motor and drive mechanism shall be securely mounted in the bedplate and the chain shall be protected by a chain guard.
During installation, the truss is placed between the top and bottom landing holes. A scissors-lift apparatus is used to raise and lower the truss into place. The apparatus is outfitted with a locator assembly that assists with angular and vertical alignment. The installation process then begins with the connecting of the handrails. Once the truss has been installed, the handrails are connected to the appropriate chains.