Because of the way they specifically work, hydraulic truck cranes are different from other crane models. Instead of utilizing a winch in order to wind up cables to provide the lifting force, hydraulic cranes use oil instead. As oil is a kind of fluid which retains its volume, it is incompressible. Thus, this means it is one of the most ideal types of fluids for pushing pistons towards the direction the force is going to be exerted.
The pressure generated by the hydraulic pump moves the piston. This particular action is maneuvered by the operator from the controls inside his cab. Usually, hydraulic truck cranes use a pump that has 2 gears.
The truck mounted crane can move from one site to another with little need for dismantling. The truck crane has a single engine that controls both the crane and the truck.
Other Parts
Boom Telescope: The boom telescope is due to a specific hydraulic operation that enables the boom to extend or retract.
Jib: Jibs are latticed structure booms..
Boom Swing: The boom swing is a large ball or roller which is 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 that helps the crane maintain its balance by utilizing hydraulics to lift the truck.
Load Movement Indicator: The load movement indicator is lights which flash in order to alert the driver that maximum weight is approaching.
Pump: The pump is the device responsible for steering the outrigger.
Steel Cables: The steel cables are reinforced and run through the boom and the jib. They could generate up to 14,000 lbs. or 6350 kg.
Boom Elevation: The boom of the crane ascends utilizing double hydraulic cylinders which allow for raising and lowering supplies.
Rotex Gear: The rotex gear is located beneath the cab and operated by hydraulics. It enables the boom to swivel on this gear.