Because of the way they specifically operate, hydraulic truck cranes are different compared to other crane types. As opposed to using a winch in order to wind up cables to provide the lifting force, hydraulic cranes use oil instead. Since oil is a type of fluid which retains its volume, it is incompressible. Hence, this means it is one of the most ideal kinds 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 driver from the controls within his cab. Usually, hydraulic truck cranes utilize a 2 gear pump.
The truck mounted crane can move from one location to another with little need for dismantling. The truck crane has a single engine which controls both the crane and the truck.
Boom Telescope: The boom telescope enables the boom to extend or retract thanks to hydraulics.
Jib: The jib is a latticed structure which extends from the boom.
Boom Swing: Boom swings have a large ball or roller attached to the carrier. It could swing 360 degrees in both directions. Hydraulic mechanisms control the swing and provide swings at various speeds 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: In order to warn the driver that maximum weight is approaching, the load movement indicator's lights flash.
Pump: The pump is the mechanism responsible for steering the outrigger.
Steel Cables: Steel reinforced cables run through the jib and the boom. They could generate up to 14,000 lbs. or 6350 kg.
Boom Elevation: The crane's boom ascends using double hydraulic cylinders which allow for lowering and raising supplies.
Rotex Gear: The rotex gear is located beneath the cab and operated by hydraulics. It enables the boom to swivel on this gear.