Hydraulic truck cranes are different compared to other crane types because of the way they particularly operate. Hydraulic cranes utilize oil rather than using a winch in order to wind up cables to provide the lifting force. As oil is a kind of fluid which retains its volume, it is incompressible. Therefore, this means it is one of the most ideal types 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 particular action is maneuvered by the operator using the controls inside his cab. Usually, hydraulic truck cranes make use of a pump that has 2 gears.
As the actual crane itself is mounted on a truck, it can travel numerous distances from site to site and there is little dismantling involved. The truck crane has a single engine which can control both the truck and the crane.
Other Parts
Boom Telescope: The boom telescope is due to a specific hydraulic operation that enables the boom to retract or extend.
Jib: Jibs are latticed structure booms..
Boom Swing: Boom swings have a big ball or roller connected to the carrier. It can swing 360 degrees in both directions. Hydraulic devices control the swing and provide swings at various speeds in order to revolve 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: In order to alert the driver that maximum weight is approaching, the load movement indicator's lights flash.
Pump: The pump is the mechanism responsible for steering the outrigger.
Steel Cables: The steel cables are reinforced and run through the boom and the jib. They could generate up to 14,000 lbs. or 6350 kg.
Boom Elevation: The boom of the crane ascends with the use of double hydraulic cylinders that can be raised and lowered.
Rotex Gear: The rotex gear is situated underneath the cab and operated by hydraulics. It allows the boom to swivel on this gear.