Because of the way they particularly operate, hydraulic truck cranes are different from other crane types. Instead of using a winch in order to wind up cables to provide the lifting force, hydraulic cranes use oil instead. Since oil is a fluid which retains its volume, it is incompressible. Thus, this means it is among the most ideal types of fluids for pushing pistons towards the direction the force is going to be exerted.
The pressure generated by the hydraulic pump moves the piston. This particular action is maneuvered by the driver from the controls in his cab. Usually, hydraulic truck cranes make use of a 2 gear pump.
The truck mounted crane can move from one location to another with little need for dismantling. The truck crane has one engine which could control both the crane and the truck.
Other Parts
Boom Telescope: The boom telescope is due to a particular hydraulic operation which allows the boom to retract or extend.
Jib: The jib is a latticed structure that extends from the boom.
Boom Swing: Boom swings have a big roller or ball 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 rotate the turntable gearbox.
Outrigger: The outrigger is a unit that 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's purpose is to steer the outrigger.
Steel Cables: The steel cables are reinforced and run through the boom and the jib. They can generate up to 6350 kg or 14,000 lbs.
Boom Elevation: The boom of the crane ascends utilizing double hydraulic cylinders which allow for raising and lowering materials.
Rotex Gear: The rotex gear is situated underneath the cab and operated by hydraulics. It allows the boom to swivel on this gear.