Innovative Design for escalator

•MAE 577

By : Mandeep Singh

Graduate Student (Mechanical

Engineering)

University at Buffalo

Motor

Chain

Rail

Truss

Steps

Courtesy : HowStuffworks.com

Idle Stairs

returning

Otis

Mitsubishi

Schindler

ThyssenKrupp

Courtesy : http://www.lift-report.de/index.php/news/361/373/Industry-

report---Lifts-and-escalators-an-industry-in-flux

Instead use rest of the stairs for getting

down

Design (change in Geometry)

Rail(Tracks) configuration

Interferences

Motion

If we modify the shape, we can turn the

steps easily for coming downstairs

Scheme at the top

Scheme at the bottom

Distance

between

rails

Rails are

parallel

Distance

between rails

Supports the

whole

assembly

rigid in terms of

strength

Use of truss

reduces weight

Interference between Rails

Interference

areas

Material change from SS304 to LAS

Stress &

Displacement

Analysis

Displacement

Plot

Path

Trace

0.00 2.20 4.40 6.60 8.80 11.00 13.20 15.40 17.60 19.80 22.00

Time (sec)

-5

70

145

220

295

CM

Ve

locit

y -

X (

mm

/se

c)

1.80 4.00 6.20 8.40 10.60 12.80 15.00 16.90

Time (sec)

-102

-59

-16

27

70C

M A

cce

l -

X (

mm

/sec

**2

)

X-Velocity X-acceleration

It can reduce the constructional cost

The structure will become light in weight since we will have less number of steps.

New aesthetic design will try to bring new market in the product line.

It removes the shimming wave(described later) effect that elongates the chain during operation as in traditional design

The electric power required for to run the escalator will be less.

The preliminary research for manufacturing new design will

incur cost of launching new product

The new design can only be established when we want to use

two sets of escalator i.e., when we definitely want one set for

going up and one set for moving down.

It required more horizontal space for turning the step compared

to the conventional setup.

The new Design is cost effective

Reduces weight

Reduces power consumption

Provide an new market segment

CAN BE

IMPLEMENTED !

Bibliography and websites

www.schindler.com www.otisworldwide.com www.mitsubishi-elevator.com www.thyssenkruppelevator.com http://www.google.com/patents?id=O14UAAAAEBAJ&printsec=abstra

ct&zoom=4&source=gbs_overview_r&cad=0#v=onepage&q&f=false http://www.parametrx.com/KONE/Eco3000/templates/basicAndSpec.a

sp http://www.lift-report.de/index.php/news/361/373/Industry-report---

Lifts-and-escalators-an-industry-in-flux http://www.goengineer.com/RederingTips www.wikipedia.com

Thank you