Hydraulic truck cranes are different from other crane types because of the way they specifically work. Hydraulic cranes utilize oil rather than using a winch in order to wind up cables to provide the lifting force. 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 creates a pressure that moves the piston. This particular action is maneuvered by the operator using the controls in his cab. Normally, hydraulic truck cranes make use of a pump that has 2 gears.
The truck mounted crane can move from one site to another with little need for dismantling. The truck crane has one 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 allows the boom to retract or extend.
Jib: Jibs are latticed structure booms..
Boom Swing: The boom swing is a big ball or roller which is attached to the carrier. It is able to swing 360 degrees in both directions. Hydraulic mechanisms provide swings at various speeds and control the swing in order to rotate the turntable gearbox.
Outrigger: Outriggers are units that cranes would utilize to maintain its balance. It utilizes hydraulics to lift the truck.
Load Movement Indicator: The load movement indicator is lights which flash so as to warn the operator 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 6350 kg or 14,000 lbs.
Boom Elevation: The boom of the crane ascends utilizing double hydraulic cylinders that allow for raising and lowering supplies.
Rotex Gear: The rotex gear is located beneath the cab and operated by hydraulics. It allows the boom to swivel on this gear.