Due to the way they specifically operate, hydraulic truck cranes are different compared to other crane types. As opposed to using a winch in order to wind up cables to provide the lifting force, hydraulic cranes utilize oil instead. Since oil is a fluid that 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 hydraulic pump generates a pressure which moves the piston. This 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.
The truck mounted crane is able to move from one site to another with little need for dismantling. The truck crane has a single engine that could control both the crane and the truck.
Other Components
Boom Telescope: The boom telescope enables the boom to retract or extend thanks to hydraulics.
Jib: Jibs are latticed structure booms..
Boom Swing: Boom swings have a large ball or roller connected to the carrier. It could 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: Outriggers are units that cranes will utilize to maintain its balance. It utilizes hydraulics to lift the truck.
Load Movement Indicator: The load movement indicator is lights which flash in order to alert 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 jib and the boom. They can generate up to 6350 kg or 14,000 lbs.
Boom Elevation: The boom of the crane ascends using double hydraulic cylinders that allow for raising and lowering materials.
Rotex Gear: The rotex gear is operated by hydraulics and situated beneath the cab. It enables the boom to swivel on this gear.