PSMECODE2008-Elevators, Dumbwaiter, escalators and Moving Walks.pdf

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Annunciator, Car

An electrical signaling device in the car which may visually or audibly indicate or call attention to such information as the floor level, full or overload conditions, manual or automatic operation, alarm status and other such information regarding the conditions at which the elevator signal register has been actuated.

Buffer

A device assigned to stop a descending car or counterweight beyond its normal limit of travel by absorbing the momentum of descent of the car or counterweight.

Bumper

A device other than a buffer, designed to stop a descending or falling car or counterweight beyond its allowable lower limit of travel by absorbing the energy or impact of descent.

Buffer, Spring

A buffer utilizing a spring to absorb the impact of the falling car or counterweight against the elevator pit.

Car, Elevator

The load-carrying unit including its platform, car, enclosure and car door or gate.

Car or Counterweight Safety

A mechanical device attached to the car frame or to an auxiliary frame, or the counterweight frame, to stop and hold the car or counterweight under one or more of the following conditions: predetermined over speed, free-fall, or if the suspension ropes slacken.

Car Door or Gate, Electric Contact

An electrical device, the function of which is to prevent operation of the driving machine by a normal operating device unless the car door or gate is in the closed position.

Note: This function is subject to the modifications specified in the Definition of Control, Two-Speed Alternating Current.

Car Door or Gate Power Closer

A device or assembly of devices which closes a manually opened car door or gate by power other than by hand, gravity springs, or the movement of the car.

Car Enclosure

The top and the walls of the car resting on and attached to the car platform.

Car Frame (Sling)

The supporting frame to which the car platform, upper and lower of guide shoes, car safety, and the hoisting ropes or hoisting-rope sheaves, or the hydraulic elevator plunger or cylinder are attached.

Car Frame, Overslung

A car frame to which the hoisting-rope fastenings or hoisting-rope sheaves, are attached to the cross-head or the top member of the car frame.

Car Frame, Sub-Post

A car frame all of whose members are located below the car frame.

Car Frame, Underslung

A car frame to which the hoisting-rope sheaves are attached at or below the car platform.

Car Platform

The structure which forms the floor of the car and which directly supports the load.

Clearance, Bottom Car

The clear vertical distance from the pit floor to the lowest structural or mechanical part, equipment or device installed beneath the car platform, except guide shoes or rollers, safety jaw assemblies and platform aprons or guards, when the car rests on its fully compressed buffers.

Clearance, Top Car

The shortest vertical clearance between the top of the car cross-head, or between the top of the car where no cross-head, is provided, and the nearest part of the overhead structure or any other obstruction when the car floor is level with the top terminal landing.

Clearance, Top Counterweight

The shortest vertical distance between any part of the counterweight structure and the nearest part of the overhead structure or any other obstruction when the floor is level with the bottom terminal landing.

Compensating-Rope Sheave Switch

A device which automatically causes the electric power to be removed from the elevator driving-machine motor and brake when the compensating sheave approaches its upper or lower limit of travel.

Control

The system governing the starting, stopping, direction of motion, acceleration speed, and retardation of the moving number.

A Control, Single-Speed Alternating Current

control for a driving machine induction motor which is arranged to run at a single speed.

Controller

A device or group of devices which serves to control in some predetermined manner the apparatus to which it is connected.

Dispatching Device, Elevator Automatic

A device, the principal function of which is to either: (a) Operate a signal in the car to indicate when the car should leave a designated landing; or (b) Actuate its starting mechanism when the car is at a designated landing.

Door, Bi-Parting

A vertically or a horizontally sliding door, consisting of two or more sections so arranged that the sections or groups of sections open away from each other.

Door or Gate, Car or Landing

The sliding portion of the car, the hinged or sliding portion on the landing through the hoistway enclosure which covers the opening giving access to the car or the landing.

Door or Gate, Manually Operated

A hoistway door or a car door or gate which is opened and closed by hand.

Door or Gate, Power Operated

A hoistway door or car door or gate which is opened and closed by means of electric motor or other mechanical system utilizing some motive power other than gravity, spring or manual operation.

Door or Gate, Self-Closing

A manually opened hoistway door or gate that automatically closes when released.

Dumbwaiter

A hoisting and lowering mechanism design to materials and other loads such as food, laundry, etc., equipped with a car, which moves in fixed guides and serves two or more fixed landings through a hoistway. This equipment shall be designed to carry small materials in a car, or partitioned or shelved enclosure measuring no more than 0.86 m² of net platform area; with a height no more than 1.2 meters and a maximum rated capacity no greater than 225 kg. 2

Dumbwaiter, Under Counter

A dumbwaiter which has its topmost landing located underneath a counter.

Elevator

A hoisting and lowering mechanism other than a dumbwaiter or freight elevator which is design to carry passenger or authorized personnel, in a protected enclosure (elevator car) which moves along fixed guides and serves two or more fixed landings on a hoistway.

Elevator, Freight

An elevator primarily used for carrying freight and on which only the operator and the person necessary for unloading and loading the freight are permitted to ride.

Elevator, Inclined

An elevator which travels at an angle of inclination of 70 degrees or less from the horizontal.

Elevator, Multi-Deck

An elevator having two or more compartment located one immediately above the other.

Elevator, Hydraulic

A power elevator where the energy is applied, by means of a liquid under pressure, in a cylinder equipped with a plunger or piston

Elevator, Direct-Plunger Hydraulic

A hydraulic having a plunger or cylinder directly. attached to the car frame or platform.

Elevator, maintained Pressure Hydraulic

A hydraulic elevator having a plunger or cylinder directly attached to the car frame or platform.

Elevator, Electro-Hydraulic

-direct-plunger elevator where liquid under pressure is available at all times for transfer into the cylinder.

Elevator, Roped-Hydraulic

A hydraulic elevator having its piston connected to the car with wire ropes.

Elevator, Scenic

An elevator designed to permit exterior viewing by passengers while the car is traveling.

Elevator, Passenger

An elevator used primarily to carry persons other than the operator and persons necessary for loading and unloading.

Elevator, Pit

That portion of a hoistway extending from the threshold level of lowest landing door to the floor at the bottom of the hoistway.

Elevator, Private Residence

A power passenger elevator which is limited in size, capacity, rise, and speed, and is installed in a private residence or in a multiple dwelling as a means of access to a private residence.

Emergency Stop Switch

A device located in the car which when manually operated, causes the electric power to be removed from the driving machine motor and brake of an electric elevator or from the electrically operated valves and/or motor of a hydraulic elevator.

Entrance Locked Out of Service

An entrance in which the hoistway door is mechanically locked by means other than the interlock to prevent the door being opened from the car side without keys or special equipment.

Escalator

A power-driven, inclined continuous stairway used for raising or lowering passengers.

Escalators, Tandem Operation

Escalators used in series with common intermediate landings.

Factory of Safety

The ratio of the ultimate strength to the working stress of a member under maximum static loading, unless otherwise specified in a particular rule.

Hoistway Access Switch

A switch, located at a landing, the function of which is to permit operation of the car with the hoistway door at this landing and the car door or gate open, in order to permit access to the top of the car or to the pit.

Hoistway/Shaft

An opening through a building or structure for the travel of elevators, dumbwaiters, or material lifts, extending from the pit floor to the roof or flow above.

Hoistway, Blind

The portion of a hoistway (shaft) where normal landing entrances are not provided.

Hoistway Single

A hoisture (shaft) where normal landing entrances are not provided.

Hoistway Enclosure

The fixed structure, consisting of vertical walls or partitions, which isolates the hoistway from all other areas or from an adjacent hoistway and in which the hoistway doors and door assemblies are installed.

Hoistway Door Electric Contact

An electrical device, the function of which is to prevent operation of the driving machine by the normal operating device unless the hoistway door is in the closed position.

Hoistway Door / Gate Locking Device

A device which secures a hoistway door or gate in the closed position and prevents it from being upended from the landing side excerpt under certain specified conditions.

Hoistway-Unit System

A series of hoistway door interlocks, hoistway door electric contacts or hoistway door combination mechanical locks and electric contacts, or a combination thereof, the function of which is to prevent operation of the driving machine by the normal operating device unless all hoistway doors are in the closed position and, are locked in the closed position.

Hoistway Door Combination Mechanical Lock and Electric Contact

A combination mechanical and electrical device with two related, but entirely independent functions, which are: (a) To prevent operation of the driving-machine by the normal operating device unless the hoistway door is in the closed position; and (b) To lock the hoistway door in the closed position and prevent it from being opened from the landing side unless the car is within the landing zone.

Indicator, Passenger Waiting

An indicator which show a which landing and for which direction elevator hall stop-or-signal calls have been registered and are unanswered.

Landing, Elevator or Material Lift

That portion of a floor balcony or platform used to receive and discharge passengers or freight.

Landing Zone

A zone extending from a point 457 mm below an elevator or material lift landing to a point 457 mm above landing.

Leveling

Controlled car movement toward the landing, within the leveling zone, by means of a leveling device, which vertically aligns the car-platform sill relative to the hoistway landing sill to attain a predetermined accuracy.

Leveling Device, One-Way Automatic

A device which corrects. the car level only in case of under-run of the car, but will not maintain the level during loading and unloading.

Leveling Device, Two-Way Automatic Maintaining

A device which corrects the car level on both under-run and over-run, and maintains the level during loading and unloading.

Leveling Zone

The limited distance above or below an elevation or material lift landing with which the leveling device is permitted to cause movement of the car toward the landing.

Machine Drive

The power unit which applies the energy necessary to raise or lower an elevator or dumbwaiter.

Machine Drive, Electric

One where the energy is applied by an electric motor. It includes the motor, brake, and the driving sheave or drum together with its connecting gearing, belt or chain, if any, and can be classified as follows:

Direct-Drive Machine

An electric driving machine, the motor which is directly connected mechanically to the driving sheave, drum, or shaft without the use of the belts or chains, either with or without intermediate gears.

Geared-Drive Machine

A direct drive machine in which the energy is transmitted from the motor to the driving sheave drum or shaft through gearing.

Traction Machine

A direct driven in which the motion of the car is obtained through friction between the suspension and a traction sheave.

Gearless-Traction Machine

A traction machine, without intermediate gearing, which has the traction sheave and the brake drum mounted directly on the motor shaft.

Winding-Drum Machine

A geared-drive machine in which the suspension ropes are fastened to and wind on a drum.

Worm-Geared Machine

A geared-drive machine in which the energy from other motor is transmitted to the driving sheave or drum through worm gearing.

Indirect-Drive Machine

An electric driving machine, the motor of which is connected indirectly to the driving sheave, drum or shaft by means of a belt or chain through intermediate gears.

Material Lift

A hoisting and lowering mechanism normally classified as an elevator has been modified to adapt it for the automatic transfer device.

Moving Walk

A power-driven device made of a continuous belt treadway or pallets used to convey passengers and/or materials on a horizontal plane from one point to another

Moving Walk, Belt Type

A moving walk with a power driven continuous belt treadway.

Moving Walk, Belt Pallet Type

A moving walk with a series of connected and power-driven pallets to which a continuous treadway is fastened.

Moving Walk, Pallet Type

A moving walk with a series of connected and power-driven pallets which together constitutes a treadway.

Non-Stop Switch, Elevator

A switch, which when operated will prevent the elevator from marking registered landing stops.

Operator, Automatic

Operation wherein the starting of the elevator car is effected in response of the momentary actuation of operating devices at the landing, and/or operating devices in the car identified with the landings, and/or in response to an automatic starting mechanism and wherein, the car is stopped automatically at the landings.

Operating Device

The car switch, push button, lever or other manual device used to actuate the control.

Overhead Structure

All the structural members platforms, etc. supporting the elevator machinery, sheaves and equipment at the top of the hoistway.

Parking Device, Elevator

An electrical mechanical device the function of which is permit the opening from the landing side of the hoistway door at any landing when the car is within the landing zone of that landing. The device may also be used to close the door.

Rope Equalizer, Suspension

A device installed on an elevator car or counterweight to equalize automatically the tensions in the suspension wire ropes.

Rope-Fastening Device, Auxiliary

A device attached to the car or counterweight or to the overhead dead-end rope-hitch support which will function automatically to support the car or counterweight in case the regular wire-rope fastening falls at the point of connection to the car or counterweight or at the overhead dead-end hitch.

Safety, Self-Resetting

A car or counterweight safety released and reset by movement in the up direction.

Single Automatic, Operation

Automatic operation by means of one button in the car for each landing served and one button at each landing, so arrange that f any car of landing button has been actuated, of actuation of any other car or landing operating button will have no effect of the operation of the car until the response to the first button has been completed.

Signal Device, Elevator Car Flush

One providing a signal light in the car, which is illuminated when the car approaches the landings at which a landing signal registering device has been actuated.

Signal System, Elevator

One consisting of buttons or other devices located at the landing which when actuated by a waiting passenger illuminate a flash signal or operate an annunciator in the car indicating floors at which stops are to be made.

Slack-Rope Switch

A device which automatically causes the electric power to be removed from the elevator driving machine motor and brake when the suspension ropes of a winding-drum machine become slack.

Starter Control Panel, Elevator

An assembly of devices by means of which the starter may control the manner in which an elevator or group of elevators function.

Static Switching

Switching of circuits by means of solid state devices.

Stopping Devices, Elevator Landing

A button or other device, located at an elevator landing which when actuated, causes the elevator to stop at that floor.

Terminal Speed Limiting Device, Emergency

A device which automatically reduces the speed as a car approaches a terminal landing, independently of the functioning of the operating device, and the normal-terminal stopping device, if the latter fail to slow down the car as intended.

Terminal Stopping Device, Emergency

A device which automatically causes the power to be removed from an electric elevator driving machine motor and brake at a pre-determined distance from the terminal landing, and independently of the functioning of the operating device and the normal terminal stopping devices does not slow down the car as intended.

Terminal Stopping Device, Machine Final (Stop Motion Switch)

A final-terminal stopping device operated directly by the driving machine.

Terminal Stopping Device, Normal

A device oг devices to slow down and stop an elevator, dumbwaiter, or material lift car automatically at or near a terminal landing independently of the functioning of the operating device.

Top Runby (Direct-Plunger Hydraulic Elevator)

The distance the elevator car can run above its top terminal landing before the plunger strikes the mechanical stop.

Transom

A panel or panels used to close a hoistway enclosure opening above a hoistway entrance.

Travel (Rise)

The vertical distance between the bottom terminal landing and the top terminal landing of an elevator, dumbwaiter, escalator, material lift, or inclined lift.