Hydraulic truck cranes are different from other crane models because of the way they particularly operate. Hydraulic cranes utilize oil instead as opposed to using a winch in order to wind up cables to provide the lifting force. Since oil is a fluid which retains its volume, it is incompressible. Thus, this means it is amongst 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 operator from the controls within his cab. Usually, hydraulic truck cranes use 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 can control both the crane and the truck.
Other Parts
Boom Telescope: The boom telescope enables the boom to extend or retract thanks to hydraulics.
Jib: The jib is a latticed structure that extends from the boom.
Boom Swing: Boom swings have a big ball or roller connected to the carrier. It can swing 360 degrees in both directions. Hydraulic mechanisms 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 uses hydraulics to lift the truck.
Load Movement Indicator: The load movement indicator is lights which flash in order 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 14,000 lbs. or 6350 kg.
Boom Elevation: The boom of the crane ascends with the use of double hydraulic cylinders that could be raised and lowered.
Rotex Gear: The rotex gear is located under the cab and operated by hydraulics. It enables the boom to swivel on this gear.