213 Module 2 PPT FINAL 6.8 - Transit Training · Microsoft PowerPoint - 213 Module 2 PPT FINAL 6.8.2012 Author: JDeibel Created Date: 9/18/2012 10:28:02 AM

Course 213: Elevator Principles of OperationModule 2: Hydraulic Elevators

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Hydraulic Elevators

Hydraulic Elevators

Transit Elevator/Escalator Consortium

Hydraulic Elevators

Riders Depend on Us

Transit Elevator/Escalator Consortium 2

Hydraulic Elevators

Outline• Define terminology associated with hydraulic

elevator operation

• Identify major components of hydraulic elevators

• Describe the basic operation of a hydraulic


• Describe the basic operation of a hydraulic elevator

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Hydraulic Elevators

Outline• Identify different hydraulic lift configurations

• Identify control systems and associated components

• Identify safety features of hydraulic elevators


Hydraulic Elevators

Key Terms• Direct Drive• Dual Cylinder• Guide Rails• Holeless

• PVC Casing• Relief Adjuster• Roller Link Chain• Roped


• Hydraulic Jack• Manual Lowering Valve• Muffler• Operating Downward

Speed• Pressure Dampening

• Roping• Roped Hydraulic• Safety Bulkhead• Synchronous Sections• Telescopic Jack

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Hydraulic Elevators

Thinking back to course 200 or any previous elevator experiences so far, what are some things you may remember about hydraulic l t ?

Hydraulic Elevators


elevators?


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Hydraulic Elevators

Major ComponentsObjective: Identify major components of hydraulic elevators


Hydraulic Elevators

Major Components

• Guide Rails• Piston• Motor and Pump• Control Valve


• Cylinder

Hydraulic Elevators

Major Components

Muffler• Pressure dampening

device


• Prevents vibration to

the elevator car

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Hydraulic Elevators

Major Components of Hydraulic Jack Assembly

• Cylinder

• Plunger

• Plate


• PVC Casing and Endcap

• Safety Bulkhead

• Welds

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©Otis

Hydraulic Elevators

Major Components

Elevators 101 2nd Edition,Section 5 7 1 pages 45-48

Telescopic Jack


©EECO

Section 5.7.1 pages 45 48

Hydraulic Elevators

Major Components

Guide Rails• Guide the car in the

hoistwayEl t 101 2nd


• Elevators 101 2nd

Edition, Sections 8.4 pages 76 - 78


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Hydraulic Elevators

Major Components

Roping• Connects the car and the

hydraulic jack


Hydraulic Elevators

Major Components

1. ____________ prevents the elevator from resting at the bottom of the cylinder.

a Roping

Knowledge Check


a. Roping

b. Safety bulkheads

c. Roller link chains

Answer: b.

Hydraulic Elevators

Major Components

2. ____________ are used in telescopic jacks and connects sections so they all move together. a Guide rails

Knowledge Check


a. Guide rails

b. Ropes

c. Roller link chains

Answer: a.


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Hydraulic Elevators

Time for a Field Trip


Hydraulic Elevators

Basic OperationObjectives


• Identify different hydraulic lift configurations


Three Types•Direct drive •Roped Hydraulic•Dual cylinder

Hydraulic Elevators

Basic OperationDirect Drive

• Used for many low-rise buildings

• Require 2 – 3 times the power of electric traction

• “Operating Speed in the Down Direction”: no more than 150ft/min (0 75 m/s)


more than 150ft/min (0.75 m/s)

• Consists of

hydraulic machine - pump, motor, valves, and associate piping)

jack - cylinder with a plunger connected to and moves the elevator as a result of the hydraulic machine

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Hydraulic Elevators



Hydraulic Elevators


• Telescopic jacks have many pistons connected to the plunger

• 2 Types:

Requires hole in the ground for hydraulic jack


- Requires hole in the ground for hydraulic jack

- Holeless hydraulic elevator – cylinder is in the hoistway attached to the rear or one side of the frame

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Elevators 101 2nd Edition, Sections 5.7 – 5.71. pages 43 - 48

Hydraulic Elevators

Basic OperationRoped Hydraulic

• Hydraulic jack is connected to the car through ropes and a sheave arrangement over a vertical jack

• Use same pumping unit and controls as direct drive

• Required to have a car safety activated by a


• Required to have a car safety activated by a governor.

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Elevators 101 2nd Edition, Sections 5.7.2page 48


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Hydraulic Elevators

Basic OperationDual Cylinder

• If your Transit Agency has dual cylinder machines, you will need to review the operation of this type of unit and how your cylinders synchronize.


Hydraulic Elevators

Basic Operation

1. Three types of hydraulic elevators include:

(check all that apply)

a Roped Hydraulic

Knowledge Check


a. Roped Hydraulic

b. Direct Drive

c. Electric Traction

d. Dual Cylinder

Answer: a., b., d.

Hydraulic Elevators

Basic Operation

2. A direct drive hydraulic elevator includes:


a jack

Knowledge Check


a. jack

b. motor

c. pump

d. valves

Answer: a., b., c., d.


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Hydraulic Elevators

Basic Operation

3. A ____________________ contains a hydraulic jack connected to the car through ropes and a sheave arrangement over a vertical jack.

Knowledge Check


g ja. Direct drive hydraulic elevator

b. Roped hydraulic elevator

c. Dual cylinder hydraulic elevator

Answer: b.

Hydraulic Elevators



Hydraulic Elevators

Control SystemsObjectives




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Hydraulic Elevators

Control Systems Control System

• Controls the movement of elevator.

• Functions include:

Regulates speed

R l t di ti


Regulates direction

Determines floor selection

Braking

Monitors safety circuits

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Hydraulic Elevators

Control Systems

Operational Control Drive Control

2 Types


Selector, Brake, Safeties and Door operation

Motor and Pump

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Hydraulic Elevators

Control Systems

Schematic for Hydraulic Elevator Controller System


Operational Control

Drive Control


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Hydraulic Elevators

Control Systems

1. Functions of the control system include:


a direction

Knowledge Check


a. direction

b. speed

c. floor selection

d. channel selection

Answer: a., b., c.

Hydraulic Elevators

Control Systems

2. Operational control is known as the _________ and drive control is known as the __________of the elevator control system.

Knowledge Check


y

a. brain, muscle

b. heart, brain

a. muscle, heart

b. muscle, brain

Answer: a.

Hydraulic Elevators

Safety FeaturesObjectives


Safety Features include:•PVC Casing


PVC Casing•Safety BulkheadAnd sometimes –•Relief Adjuster •Manual Lowering Valve

Elevators 101 2nd Edition, Sections 5.7 – 5.7.1Pages 43 - 48


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Hydraulic Elevators



Hydraulic Elevators

Conclusion• Define terminology associated with hydraulic

elevator operation

• Identify major components of hydraulic elevators

• Describe the basic operation of a hydraulic



• Identify different hydraulic lift configurations



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Hydraulic Elevators

Conclusion• Direct Drive• Dual Cylinder• Guide Rails• Holeless

• PVC Casing• Relief Adjuster• Roller Link Chain• Roped


• Hydraulic Jack• Manual Lowering Valve• Muffler• Operating Downward

Speed• Pressure Dampening

• Roped Hydraulic• Safety Bulkhead• Synchronous Sections• Telescopic Jack

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Hydraulic Elevators

Quiz Time


Documents

213 Module 2 PPT FINAL 6.8 - Transit Training · Microsoft PowerPoint - 213 Module 2 PPT FINAL 6.8.2012 Author: JDeibel Created Date: 9/18/2012 10:28:02 AM