Hydraulic truck cranes are different from other crane types due to the way they particularly operate. Hydraulic cranes use oil instead as opposed to using a winch in order to wind up cables to provide the lifting force. As oil is a kind of fluid that retains its volume, it is incompressible. Therefore, 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 creates a pressure which moves the piston. This particular action is maneuvered by the driver utilizing the controls in his cab. Usually, hydraulic truck cranes make use of 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 a single engine which controls both the crane and the truck.
Other Parts
Boom Telescope: The boom telescope enables 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 which is connected 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: The outrigger is a unit which helps the crane maintain its balance by utilizing hydraulics to lift the truck.
Load Movement Indicator: The load movement indicator is lights that 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 boom and the jib. They are able to generate up to 14,000 lbs. or 6350 kg.
Boom Elevation: The crane's boom ascends using double hydraulic cylinders which allow for lowering and raising supplies.
Rotex Gear: The rotex gear is operated by hydraulics and situated under the cab. It allows the boom to swivel on this gear.