Because of the way they particularly operate, hydraulic truck cranes are different from other crane models. As opposed to using 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 which retains its volume, it is incompressible. Thus, this means it is one of the most ideal kinds 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 from the controls within his cab. Typically, hydraulic truck cranes make use of a 2 gear pump.
The truck mounted crane is able to move from one location to another with little need for dismantling. The truck crane has one engine which controls both the crane and the truck.
Other Components
Boom Telescope: The boom telescope enables the boom to extend or retract because of hydraulics.
Jib: The jib is a latticed structure which extends from the boom.
Boom Swing: Boom swings have a big ball or roller attached to the carrier. It can 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: Outriggers are units that cranes would utilize to maintain its balance. It utilizes hydraulics to lift the truck.
Load Movement Indicator: In order to warn the driver that maximum weight is approaching, the load movement indicator's lights flash.
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 can be lowered and raised.
Rotex Gear: The rotex gear is situated underneath the cab and operated by hydraulics. It allows the boom to swivel on this gear.