LECTURE 5
LOADING & HAULING
Sung-Woo MOON, Ph.D, P.E
OCTOBER 15, 2018
Nazarbayev University
Department of Civil Engineering
Lecture 05
ECE 404: Construction Technologies & Processes 2
LOADER
Lecture 05
ECE 404: Construction Technologies & Processes 3
•A tractor equipped with a front-end bucket
–called a loader, front-end loader, or bucket loader
•One of the most commonly used heavy machinery in the
construction industry, used to excavate,transport, and upload
bulk materials such as earth and rock
•Hydraulic-activated lifting system exert maximum breakout
force with an upward motion of bucket
•It does not required any other equipment to level, smooth, or
clean up the area in which it is working
LOADERS
Lecture 05
ECE 404: Construction Technologies & Processes 4
Bucket
Cab
Loader boom
Bucket cylinder
Bucket
cylinder
Arm cylinder
Excavating
bucket Supporting leg
Boom
cylinder
Hydraulic tank/tool box (left)
Fule tank/battery box (right)
LOADER
COMPONENTS OF LOADER
Lecture 05
ECE 404: Construction Technologies & Processes 5
Track loader Wheel loader
•Crawler-tractor-mounted type
LOADER
TYPES OF LOADER
•Wheel-tractor-mounted type
Lecture 05
ECE 404: Construction Technologies & Processes 6
Crawler
-tractor-mounted type
Wheel
-tractor-mounted type
Speed and mobility is low
due to
track
Wheels provide
better mobility
and speed
Are capable of overcoming steeper
grades and side slopes
Used in the areas where the ground
is
soft and muddy
There is no rubber tires
There is the chance of rubber tires
being destroyed
Stability can be increased using
long and wide track (low ground
pressure and high tractive effort)
Stability can not be increased
Because of their lower speed, their
production is less than that of a
wheel loader
Most modern wheel loaders are
articulated (provide greater
maneuverability)
LOADER
TYPES OF LOADER
•Depending on the sizes and the nature of work to be performed,
loaders can be classified in to various types
LOADER
TYPES OF LOADER
