Hydraulic truck cranes are different from other crane models due to the way they particularly operate. Hydraulic cranes use oil instead as opposed to utilizing a winch in order to wind up cables to provide the lifting force. Since oil is a fluid that retains its volume, it is incompressible. Therefore, 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 creates a pressure that moves the piston. This action is maneuvered by the driver using the controls within his cab. Normally, hydraulic truck cranes make use of a pump that has 2 gears.
The truck mounted crane can move from one location to another with little need for dismantling. The truck crane has one engine that could control both the crane and the truck.
Other Components
Boom Telescope: The boom telescope enables the boom to retract or extend thanks to hydraulics.
Jib: The jib is a latticed structure which extends from the boom.
Boom Swing: Boom swings have a large roller or ball attached to the carrier. It is able to swing 360 degrees in both directions. Hydraulic mechanisms provide swings at various speeds and control the swing in order to rotate 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 so as to warn the operator 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 can generate up to 6350 kg or 14,000 lbs.
Boom Elevation: The crane's boom ascends using double hydraulic cylinders which allow for raising and lowering materials.
Rotex Gear: The rotex gear is situated underneath the cab and operated by hydraulics. It allows the boom to swivel on this gear.