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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
Transit Elevator/Escalator Consortium
• Describe the basic operation of a hydraulic elevator
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Course 213: Elevator Principles of OperationModule 2: Hydraulic Elevators
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Hydraulic Elevators
Outline• Identify different hydraulic lift configurations
• Identify control systems and associated components
• Identify safety features of hydraulic elevators
Transit Elevator/Escalator Consortium 4
Hydraulic Elevators
Key Terms• Direct Drive• Dual Cylinder• Guide Rails• Holeless
• PVC Casing• Relief Adjuster• Roller Link Chain• Roped
Transit Elevator/Escalator Consortium
• 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
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elevators?
Course 213: Elevator Principles of OperationModule 2: Hydraulic Elevators
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Hydraulic Elevators
Major ComponentsObjective: Identify major components of hydraulic elevators
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Hydraulic Elevators
Major Components
• Guide Rails• Piston• Motor and Pump• Control Valve
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• Cylinder
Hydraulic Elevators
Major Components
Muffler• Pressure dampening
device
Transit Elevator/Escalator Consortium
• Prevents vibration to
the elevator car
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Course 213: Elevator Principles of OperationModule 2: Hydraulic Elevators
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Hydraulic Elevators
Major Components of Hydraulic Jack Assembly
• Cylinder
• Plunger
• Plate
Transit Elevator/Escalator Consortium
• 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
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©EECO
Section 5.7.1 pages 45 48
Hydraulic Elevators
Major Components
Guide Rails• Guide the car in the
hoistwayEl t 101 2nd
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• Elevators 101 2nd
Edition, Sections 8.4 pages 76 - 78
Course 213: Elevator Principles of OperationModule 2: Hydraulic Elevators
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Hydraulic Elevators
Major Components
Roping• Connects the car and the
hydraulic jack
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Hydraulic Elevators
Major Components
1. ____________ prevents the elevator from resting at the bottom of the cylinder.
a Roping
Knowledge Check
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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
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a. Guide rails
b. Ropes
c. Roller link chains
Answer: a.
Course 213: Elevator Principles of OperationModule 2: Hydraulic Elevators
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Hydraulic Elevators
Time for a Field Trip
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Hydraulic Elevators
Basic OperationObjectives
• Describe the basic operation of a hydraulic elevator
• Identify different hydraulic lift configurations
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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)
Transit Elevator/Escalator Consortium
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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Course 213: Elevator Principles of OperationModule 2: Hydraulic Elevators
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Hydraulic Elevators
Basic OperationDirect Drive
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Hydraulic Elevators
Basic OperationDirect Drive
• Telescopic jacks have many pistons connected to the plunger
• 2 Types:
Requires hole in the ground for hydraulic jack
Transit Elevator/Escalator Consortium
- 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
Transit Elevator/Escalator Consortium
• Required to have a car safety activated by a governor.
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Elevators 101 2nd Edition, Sections 5.7.2page 48
Course 213: Elevator Principles of OperationModule 2: Hydraulic Elevators
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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.
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Hydraulic Elevators
Basic Operation
1. Three types of hydraulic elevators include:
(check all that apply)
a Roped Hydraulic
Knowledge Check
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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:
(check all that apply)
a jack
Knowledge Check
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a. jack
b. motor
c. pump
d. valves
Answer: a., b., c., d.
Course 213: Elevator Principles of OperationModule 2: Hydraulic Elevators
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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
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g ja. Direct drive hydraulic elevator
b. Roped hydraulic elevator
c. Dual cylinder hydraulic elevator
Answer: b.
Hydraulic Elevators
Time for a Field Trip
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Hydraulic Elevators
Control SystemsObjectives
• Identify control systems and associated components
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Course 213: Elevator Principles of OperationModule 2: Hydraulic Elevators
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Hydraulic Elevators
Control Systems Control System
• Controls the movement of elevator.
• Functions include:
Regulates speed
R l t di ti
Transit Elevator/Escalator Consortium
Regulates direction
Determines floor selection
Braking
Monitors safety circuits
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Hydraulic Elevators
Control Systems
Operational Control Drive Control
2 Types
Transit Elevator/Escalator Consortium
Selector, Brake, Safeties and Door operation
Motor and Pump
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Hydraulic Elevators
Control Systems
Schematic for Hydraulic Elevator Controller System
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Operational Control
Drive Control
Course 213: Elevator Principles of OperationModule 2: Hydraulic Elevators
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Hydraulic Elevators
Control Systems
1. Functions of the control system include:
(check all that apply)
a direction
Knowledge Check
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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
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y
a. brain, muscle
b. heart, brain
a. muscle, heart
b. muscle, brain
Answer: a.
Hydraulic Elevators
Safety FeaturesObjectives
• Identify safety features of hydraulic elevators
Safety Features include:•PVC Casing
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PVC Casing•Safety BulkheadAnd sometimes –•Relief Adjuster •Manual Lowering Valve
Elevators 101 2nd Edition, Sections 5.7 – 5.7.1Pages 43 - 48
Course 213: Elevator Principles of OperationModule 2: Hydraulic Elevators
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Hydraulic Elevators
Time for a Field Trip
Transit Elevator/Escalator Consortium 34
Hydraulic Elevators
Conclusion• Define terminology associated with hydraulic
elevator operation
• Identify major components of hydraulic elevators
• Describe the basic operation of a hydraulic
Transit Elevator/Escalator Consortium
• Describe the basic operation of a hydraulic elevator
• Identify different hydraulic lift configurations
• Identify control systems and associated components
• Identify safety features of hydraulic elevators
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Hydraulic Elevators
Conclusion• Direct Drive• Dual Cylinder• Guide Rails• Holeless
• PVC Casing• Relief Adjuster• Roller Link Chain• Roped
Transit Elevator/Escalator Consortium
• Hydraulic Jack• Manual Lowering Valve• Muffler• Operating Downward
Speed• Pressure Dampening
• Roped Hydraulic• Safety Bulkhead• Synchronous Sections• Telescopic Jack
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Course 213: Elevator Principles of OperationModule 2: Hydraulic Elevators
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Hydraulic Elevators
Quiz Time
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