Bulldozers ~ these machines consist of a track or wheel mounted
power unit with a mould blade at the front which is controlled by
hydraulic rams. Many bulldozers have the capacity to adjust the
mould blade to form an angledozer and the capacity to tilt the
mould blade about a central swivel point. Some bulldozers can also
be fitted with rear attachments such as rollers and scarifiers.
The main functions of a bulldozer are:-
Shallow excavations up to 300 m deep either on level ground
or sidehill cutting.
Clearance of shrubs and small trees.
Clearance of trees by using raised mould blade as a pusher
arm.
Acting as a towing tractor.
Acting as a pusher to scraper machines (see next page).
NB. Bulldozers push earth in front of the mould blade with some
side spillage whereas angledozers push and cast the spoil to one
side of the mould blade.
Note: Protective cab/roll bar to be fitted before use.
Bulldozers