Hydraulic truck cranes are different from other crane models because of the way they particularly work. Hydraulic cranes utilize oil instead as opposed to utilizing a winch in order to wind up cables to provide the lifting force. Because oil is a fluid that retains its volume, it is incompressible. Thus, this means it is amongst 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 which moves the piston. This action is maneuvered by the operator using the controls in his cab. Typically, hydraulic truck cranes utilize a pump which 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 which can control both the truck and the crane.
Other Components
Boom Telescope: The boom telescope allows the boom to extend or retract because of hydraulics.
Jib: The jib is a latticed structure that extends from the boom.
Boom Swing: Boom swings have a large roller or ball attached to the carrier. It can swing 360 degrees in both directions. Hydraulic devices provide swings at varying speeds and control the swing in order to revolve the turntable gearbox.
Outrigger: Outriggers are units which cranes would use 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's purpose is to steer the outrigger.
Steel Cables: The steel cables are reinforced and run through the jib and the boom. They could generate up to 6350 kg or 14,000 lbs.
Boom Elevation: The boom of the crane ascends with the use of double hydraulic cylinders that are capable of being lowered and raised.
Rotex Gear: The rotex gear is situated under the cab and operated by hydraulics. It enables the boom to swivel on this gear.