Due to the way they particularly operate, hydraulic truck cranes are different from other crane models. As opposed to utilizing a winch in order to wind up cables to provide the lifting force, hydraulic cranes utilize oil instead. As oil is a type of fluid that retains its volume, it is incompressible. Hence, 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 hydraulic pump generates a pressure that moves the piston. This particular action is maneuvered by the operator from the controls within his cab. Typically, hydraulic truck cranes utilize a 2 gear pump.
The truck mounted crane is able to 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.
Boom Telescope: The boom telescope allows the boom to extend or retract because of hydraulics.
Jib: Jibs are latticed structure booms..
Boom Swing: The boom swing is a big roller or ball that is attached to the carrier. It could swing 360 degrees in both directions. Hydraulic mechanisms control the swing and provide swings at varying speeds in order to rotate the turntable gearbox.
Outrigger: Outriggers are units which cranes would utilize to maintain its balance. It uses hydraulics to lift the truck.
Load Movement Indicator: The load movement indicator is lights which flash in order to warn the driver that maximum weight is approaching.
Pump: The pump is the mechanism responsible for steering the outrigger.
Steel Cables: The steel cables are reinforced and run through the boom and the jib. They are able to generate up to 14,000 lbs. or 6350 kg.
Boom Elevation: The boom of the crane ascends with the use of double hydraulic cylinders which can be lowered and raised.
Rotex Gear: The rotex gear is operated by hydraulics and situated underneath the cab. It allows the boom to swivel on this gear.