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Thyssenkruppelevator - Vertical Transportation: A Glossary Category: Electronics and Engineering > Elevator terms Date & country: 02/09/2008, USA Words: 208

Kick plate
Metal plate, often finished in stainless steel, fastened to lower face of the elevator doors to minimum damage to the face of the door.

Jack - Seal
A device mounted on the guide to minimize oil escaping around the plunger.

Junction box
Box with a cover that serves the purpose of joining different runs of cables and providing space for the connection of conductors.

Jack hole
A man-made opening in the earth for the placement of the cylinder for a hydraulic elevator.

Jack - Plunger
The inner piece of the jack which supports the car.

Jack - Guide
An assembly bolted to the upper end of the cylinder which centers the plunger in the cylinder.

Jack - Drip Ring
A flange on the guide used to collect oil from the plunger so it can drain into a collector.

Jack - Cylinder
The part of the hydraulic jack mechanism which contains the plunger and oil.

Jack - Babbitt
A soft metal used in the guide to reduce scratching of the plunger surface.

Jack
Assembly of cylinder, packing and plunger of a hydraulic elevator. The device that `pushes” the elevator up by means of liquid under pressure.

Isolated platform
Car platform that is mounted on rubber vibration absorbing material to reduce the transmission of noise and vibration. Isolated platforms are not applicable to holeless or telescoping jacks.

Interval
The time (in seconds) between elevator departures from the lobby during morning up peak. An interval of 30 seconds means that a car will be leaving the lobby every 30 seconds with a load of passengers. Traditional Elevatoring theory can be used to show that the interval is equal to the calculated round trip time divided by the number of elevators.

Interlock
A device that provides a physical lock for hoistway door and gives an electrical signal which allows the car to run.

Independent service
When activated through a key switch, the car is removed from group operation and will bypass all landing calls, deactivate hall/car riding lanterns, and respond only to car calls. Also known as hospital emergency operation.

Hydraulic Elevator
Power elevator where the energy is applied, by means of a liquid under pressure, in a hydraulic jack.

Hoistway Access
An option which allows access to the hoistway from the lowest and uppermost landing through a spring return key switch at each access landing. Depressing the key switch moves the car up and down the hoistway at leveling speed and enables access to the top of the car or the pit.

Hoistway Door
The side of the elevator door visible in the lobby or hallway which may be opened only when the car is at that landing and the door operator engages both the hoistway and the car doors.

Hoistway
The space enclosed by fireproof walls and hoistway doors in which the elevator travels, extending from the pit floor to the roof. (Hoistway is sometimes called 'hatchway' or 'hatch'.)

Hitch Plate
A plate (on traction elevators) clamped to the underside of the crosshead and to which the shackles are attached.

Header
Formed steel positioned horizontally in the hoistway to provide structural support to the door hanger and vertical struts on sliding type entrances.

Hanger Track
The track through which the hanger rollers are guided.

Head Jamb
The top horizontal piece of an entrance door frame which connects the side members.

Hanger Rollers
Rollers (two per panel) from which horizontal door panels are suspended.

Hall station
The signal fixture with directional buttons mounted at each landing used to request an elevator. Fire service switch and signage are typically included in the main hall station. Terminal Hall Stations have only one button for up or down. Intermediate hall stations are provided for landings where up and down are options.

Hall call, landing call
Indication of the passenger's destination direction entered from the hall by pushing the corresponding button.

Hall lantern
A light fixture mounted in the hallway to provide visual and audible indication that a car is about to arrive and the direction of travel when it leaves.

Guide Shoes
Devices on the sling which slide or roll on the rails to guide the elevator through the hoistway

Guide Rollers
Guide shoes with rollers which rotate on the guide rails.

Guide Rails
`T” or Omega shaped sections installed vertically in the hoistway to guide and direct the course of travel of either an elevator or its counterweight

Gross load
The combined weight of the platform, sling, cab, and rated capacity.

Group operation
Scanning a system of two or more cars for hall calls then dispatching cars appropriately based on calculated estimated time of arrival.

Governor
The speed monitoring device on traction elevators that triggers the safety when the elevator over-speeds.

Gear - Housing
The enclosure containing a traction machine's gears.

Glass back
An elevator cab with one wall made entirely or partially of glass.

Gear - Worm
A spiral gear connected to and driven by the motor and which drives the ring gear.

Gear - Ring
A large gear driven by the worm gear which is attached to the drive sheave.

Gate - Double Blade
A vertical sliding counterweighted device used to provide entrance protection on freight elevators. It consists of two panels usually made of expanded metal. The blades telescope to reduce overhead space requirements.

Front Types
Conventional return with applied faceplate - The car station's operating controls are built into box that is recessed into the front return wall. An applied faceplate is secured to the front panel with screws.

Gate - Single Blade
A vertical sliding counterweighted device used to provide entrance protection on freight elevators and consisting of one panel, usually made of expanded metal.

Front Return
The side of cab at which the entrance is located if the car has a single entrance. On cars with front & rear entrances, the front is the entrance side closest to the main car station. Typically, the main car operating panel will be in the front return.

Freight Enclosure
The ruggedly built room on a freight elevator in which material is being carried.

Fixture Styles
Aurora - A fixture style featuring round buttons with red illuminating halos. Hall and car riding lanterns are available with either round or triangular lenses.

FPM
For Imperial measurements, speeds of elevators are measured in FPM

Fish Plates
A steel plate which spans the joint where two length of guide rails in a stack meet.

Fire service
A group of devices that removes all cars from normal use, sends them to a designated landing, and permits special operation for firefighters or emergency personnel.

Fireman telephone jack
A special phone jack that can be built into a car operating panel or hall station, which enables firefighter communication.

Fascia
Steel plate installed in the hoistway vertically to extend from the top of the hoistway door hanger header to the sill at the landing above, which connects the hoistway door hanger to the sill to prevents pinch points and ledges.

Entrance assembly
Closes the hoistway enclosures openings that are normally used for loading and unloading, including the door panels, transom panels, hardware, and frames.

Emergency Stop Switch
A hand operated switch in the car push button station, which, when thrown to the off position stops the elevator and prohibits it from running.

End Post
A method of mounting the two stacks of rails on a common wall at the end of the hoistway.

Emergency exit
The removable opening in the car top panel of the cab. Removable only from the top of the car, the emergency exit permits passengers to be evacuated from the elevator during emergency.

Emergency power operation
Automatic Lowering using a Building-supplied Standby Power Source – (Hydraulic Applications: 10-DOA) Upon loss of the normal power supply, building-supplied standby power is available on the same wires as the normal power supply.

Double-wrapped
Roping arrangement on (gearless) traction elevators, where the hoist ropes pass around a secondary sheave and back over the drive sheave again, so the traction (friction) of the ropes on the drive sheave is increased

Dust covers (hanger cover)
Sheet metal cover that protects the door hangar track assembly.

Dot Matrix Position Indicator
Position indicator with a display that uses small light emitting diodes (LED) to display a character (see Position Indicator Types)

Door Type
Door speed, door operation, and door opening width effect the door opening and closing times of your elevator. Ultimately, this impacts performance and interval. Because door operation happens at each stop, a one second difference in opening and/or closing time makes a major difference in calculated performance.

Door Operator
A machine mounted on the car directly above the opening which drives the car door open and closed.

Door Panel
A portion of the door or gate which covers the opening and moves to uncover the opening.

Door hanger
Rolling assembly fastened to the top of the door panel. Supports and allows horizontal sliding movement of the door panel. The door track is part of the hanger assembly.

Door interlock
Prevents the operation on the machine unless the hoistway door is locked in a closed position, Also prevents the opening of hoistway doors from the landing side unless the elevator is in the landing zone and is either stopped or coming to a stop.

Door Gibs
Devices at the bottom of horizontal sliding door panels which stick into sill grooves and hold the door panels in alignment.

Doors - Horizontal Sliding
Entrance protection for both car and hoistway (usually for passenger elevators) which moves sideways. Available as single-slide or double-slide.

Doors - Center Opening
A door type which consists of two horizontal sliding panels which move in opposite directions.

Doors - Biparting
Protective devices for hoistway openings of freight elevators consisting of two steel panels which move vertically and counterweight each other.

Direct Current (DC)
An electrical current that flows constantly in one direction.

Deceleration
A period during which the elevator moves at an ever decreasing rate of speed, usually referring to the period from full speed to leveling speed.

Crosshead
The upper member of the car frame.

Counterweight fillers
Metal pieces stacked and bolted together within a frame to form the counterweight.

Counterweight
Added weight on traction elevators which counterbalances the weight of an elevator car plus approximately 40% of the capacity load. The traction car & counterweight diagrams is shown below:

Corner Post
A method of mounting rails in opposite corners of the hoistway, usually to accommodate doors in adjacent hoistway walls.

Control Valve
The device which on hydraulic elevators controls the oil flow to and from the jack.

Controller
An electrical panel which performs many computer functions by which it operates an elevator.

Compensating rope
Wire roping installed to obtain hoist rope weight compensation. Again, one end attached to the underside of the car and one end fastens to the counterweight.

Compensating chain
Welded-link chain used to compensate the weight of hoist rope. One end of the chain attaches under the elevator and one end is fastened to the counterweight.

Compensation
Using ropes, chain or other design to counterbalance transfer of hoist rope weight from one side of the hoisting machine to the other as the car moves within the hoistway.

Column
The vertical sections of the car's entrance frame.

Conventional Jack
The type of hydraulic elevator mechanism whose cylinder must be installed in the ground. Major components of a conventional jack system are shown in the diagram below:

Code, ASME
System of regulations pertaining to design, manufacturing, installation and maintenance of elevators.

Clutch
A device mounted on the car door which pulls the hoistway doors as the car door moves open or closed.

Clips, Rail
Special clip designed to fasten guide rails to guide rail brackets; clamps rails firmly in place.

Ceiling types
Suspended ceiling (diffused lighting) – Included as ThyssenKrupp Elevator`s standard design, this ceiling has white translucent diffusers for the fluorescent lighting. Standard metal frame is black baked enamel. It is also available in aluminum, stainless steel or bronze finishes.

Car riding lantern
A signal fixture mounted in the return & strike columns, or in the soffitt, of the car's entrance to provide visual and audible indication that a car has arrived and its next direction of travel.

Car operating panel, car station
A panel mounted in the car containing the car operating controls, such as call register (floor) buttons, door open and close, alarm, emergency stop, and any other buttons or keyswitches that may be required for operation.

Car call
Indication of the passenger's destination floor as entered from the car operating station by pushing the corresponding floor push button.

Capacity
The load rating, measured in pounds, for which an elevator is designed and powered. The actual weight on the elevator should never exceed its rated capacity.

Calculated 5 Minute
The number of people that can be transported from the lobby in a five minute period, expressed as a percentage of the population. Elevator systems with a handling capacity of 12% can handle incoming passenger traffic up to a rate of 12% before lobby crowding occurs. Although traffic handling capacity guidelines have been debated for years, typically this measurement is an estimate of how many peop...

Calculated Interval
Measured in seconds, this is the time between elevator departures from the lobby during morning up peak. An interval of 30 seconds means that a car will be leaving the lobby every 30 seconds with a load of passengers. Traditional elevator theory can be used to show that the interval is equal to the calculated round trip time divided by the number of elevators.

Cables
Ropes, usually 4 to 6 in number, used to support the car. Ropes pass over the drive sheave to the counterweight, either pulling up the car or lowering it.

Cable Wrap
The amount of the drive sheave actually in contact with the cable.

Cab walls
Flat steel wall cab – constructed of steel to create a flat cab interior. Basic options include a baked enamel finish from our standard selection as shown below. Other available options are brushed, polished or 5WL patterned stainless steel.

Cab
The decorative enclosure on a passenger elevator platform in which people are carried.

Buffer stroke
The distance that a buffer will compress.

Buffer springs
Large diameter springs that are permanently placed in a traction elevator pit for the purpose of stopping a descending car or counterweight beyond its normal limit of travel.

Buffer channel
A channel in the pit floor of a traction elevator that supports buffers and guide rails.

Building Type
Required to determine the requirements for service.

Buffer
A device designed to stop a descending car or counterweight beyond its normal limit and to soften the force with which the elevator runs into the pit during an emergency.

Brake
A spring loaded clamping device that prevents the elevator from moving when the car is at rest and no power is applied to the hoistway motor.

Brake Drum
A round, machined surface on the motor shaft which the brake clams for stopping.

Brackets (Guide Rail)
The steel plates, angles, or beams used to attach the rails firmly to the hoistway.

Brace Rod
A rod extending from the elevator platform framing to another part of the elevator car frame or sling for the purpose of supporting the platform or holding it securely in position. Brace robs are supports for the outer corners of the platform, each of which tie to upper portions of the stile.