Hydraulic truck cranes are different compared to other crane types because of the way they particularly work. Hydraulic cranes use oil rather than using a winch in order to wind up cables to provide the lifting force. As oil is a fluid that 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 pressure created by the hydraulic pump moves the piston. This action is maneuvered by the operator from the controls in his cab. Normally, hydraulic truck cranes utilize a pump which has 2 gears.
Because the actual crane itself is mounted on a truck, it could travel numerous distances from job to job and there is little dismantling involved. The truck crane has a single engine which controls both the truck and the crane.
Other Components
Boom Telescope: The boom telescope allows the boom to extend or retract thanks to hydraulics.
Jib: Jibs are latticed structure booms..
Boom Swing: Boom swings have a large ball or roller connected 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 rotate 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 which flash in order to warn the driver 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 14,000 lbs. or 6350 kg.
Boom Elevation: The crane's boom ascends using double hydraulic cylinders that allow for raising and lowering supplies.
Rotex Gear: The rotex gear is operated by hydraulics and situated under the cab. It enables the boom to swivel on this gear.