Hydraulic truck cranes are different from other crane types because of the way they particularly work. Hydraulic cranes utilize oil rather than using a winch in order to wind up cables to provide the lifting force. As oil is a type of 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 particular action is maneuvered by the operator using 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 one engine that controls both the crane and the truck.
Other Parts
Boom Telescope: The boom telescope is due to a particular hydraulic operation that enables the boom to retract or extend.
Jib: The jib is a latticed structure that extends from the boom.
Boom Swing: The boom swing is a big roller or ball which is attached to the carrier. It is able to swing 360 degrees in both directions. Hydraulic devices 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 that flash so as to warn the operator that maximum weight is approaching.
Pump: The pump's purpose is to steer the outrigger.
Steel Cables: Steel reinforced cables run through the boom and the jib. They are able to generate up to 6350 kg or 14,000 lbs.
Boom Elevation: The boom of the crane ascends utilizing double hydraulic cylinders that allow for lowering and raising supplies.
Rotex Gear: The rotex gear is operated by hydraulics and located underneath the cab. It enables the boom to swivel on this gear.