Cranes

Gentle Giants in Construction

Module Outline

Different types of Cranes

Cranes operations- Mechanisms

- lifting process

- Safety

2

Cranes of Today

Cranes of Today

Key Elements of Crawler Cranes

Auxiliary Drill Power Plant

Base for Telescoping

Spotter

Inner Bridle or Harness

Gantry or A-Frame

Boom Hoist Reeving

Lattice Boom

Upper Chord

Lower ChordBoom Gantry A-Frame

Jib Line Stays

Luffing Fly Jib

Cab

Jib Gantry

Back Hitch

Boom Point with Sheaves

Lattice Boom

Rough Terrain Telescoping Crane

Main Load Block & Hook

Auxiliary Hook & Headache Ball

Auxiliary or Whip Line

Boom Head

4 Part Main Hoist Lines

Counter-weight

Auxiliary Hoist Winch

Main Hoist Winch

Boom Extension Jib

4-Wheel Drive Carrier

Telescoping Boom Base

Section

Driver & Operator Cab

Hydraulic Boom \Cylinder

Outrigger BeamsDeployed

Upper Block

Secondary Pad/Float (or Cribbing)

Primary Outrigger Pad or Float

Vertical Jack Cylinder

Outrigger Beam

The Physics that Supports Cranes

The Physics that Supports Cranes

The Physics that Supports Cranes

+ Friction

The Physics that Supports CranesYou are using a rope and two pulleys, each with a friction factor of 10%, to lift a 50 kg rock. What is the force in the lead line?

Wire Rope Construction

a –Wire b – Strand c – Cored -Wire Rope

The Rigging – Hitching the Load

The Rigging – Hitching the Load

Overbending or Kinking

Safe Lifting Capacity and Load Rating

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Safe Lifting Capacity and Load Rating

Safe Lifting Capacity and Load Rating

The Story of the Missing Lift PlanWhat is wrong with this crane set-up?

What Really Happened

Forensic Engineering

Cause-Effect Fishbone Diagram

The Self-Erecting Bottom Slewing

Saddle Crane

Video #1: https://youtu.be/_VY79iBNFLs

Crane Control Strategies

Crane Control Strategies

Protecting Yourself and the Others By

Planning & Loading “Right”Video #1: https://youtu.be/4_dVKVCm4PU

Video #2: https://youtu.be/4OOg7vL3rNY

Video #3: https://youtu.be/4OOg7vL3rNY

Two-Blocking

Protection Against Electrocution

Measuring Angles

Boom Angle off of

vertical

Boom Angle

Turret Platform to be horizontal +/- 1 %

Angle of front-back axis

Angle 90O off front-back axis

Dual-Axis Inclinometer Single-Axis Inclinometer

Interference Prevention for Tower Cranes

Risky radio instructions to crane operator lifting unevenly rigged rebar bundles in a blind zone

Limited view from the crane cabin (regular lift) with several blind areas

Embedded mobile audio and video communication devices with wireless connectivity

Wireless camera housing attached to hook block

Different views recorded by the system at different elevations

Testing system’s capability to deliver elevation of hook block in real-time