Because of the way they specifically operate, hydraulic truck cranes are different from other crane types. Rather than utilizing a winch in order to wind up cables to provide the lifting force, hydraulic cranes use oil instead. Since oil is a fluid which retains its volume, it is incompressible. Hence, this means it is among the most ideal types of fluids for pushing pistons towards the direction the force is going to be exerted.
The hydraulic pump generates a pressure that moves the piston. This action is maneuvered by the operator utilizing the controls inside his cab. Usually, hydraulic truck cranes utilize a pump which has 2 gears.
The truck mounted crane can move from one site to another with little need for dismantling. The truck crane has one engine which controls both the crane and the truck.
Other Parts
Boom Telescope: The boom telescope is due to a particular hydraulic operation which enables the boom to retract or extend.
Jib: The jib is a latticed structure which extends from the boom.
Boom Swing: The boom swing is a big ball or roller which is attached to the carrier. It could swing 360 degrees in both directions. Hydraulic devices provide swings at various speeds and control the swing in order to revolve the turntable gearbox.
Outrigger: The outrigger is a unit which helps the crane maintain its balance by using hydraulics to lift the truck.
Load Movement Indicator: The load movement indicator is lights which flash in order to alert the operator that maximum weight is approaching.
Pump: The pump is the device responsible for steering the outrigger.
Steel Cables: Steel reinforced cables run through the jib and the boom. They can generate up to 6350 kg or 14,000 lbs.
Boom Elevation: The crane's boom ascends using double hydraulic cylinders that allow for lowering and raising materials.
Rotex Gear: The rotex gear is operated by hydraulics and located under the cab. It enables the boom to swivel on this gear.