Hydraulic truck cranes are different from other crane models because of the way they particularly work. Hydraulic cranes use oil instead as opposed to utilizing a winch in order to wind up cables to provide the lifting force. As oil is a fluid which retains its volume, it is incompressible. Hence, 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 created by the hydraulic pump moves the piston. This particular action is maneuvered by the operator from the controls inside his cab. Usually, hydraulic truck cranes make use of a 2 gear pump.
The truck mounted crane can move from one site to another with little need for dismantling. The truck crane has one engine that could control both the truck and the crane.
Other Components
Boom Telescope: The boom telescope allows the boom to retract or extend because of hydraulics.
Jib: The jib is a latticed structure which extends from the boom.
Boom Swing: Boom swings have a big ball or roller attached to the carrier. It can swing 360 degrees in both directions. Hydraulic mechanisms control the swing and provide swings at various speeds in order to revolve the turntable gearbox.
Outrigger: Outriggers are units that cranes would use 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 operator that maximum weight is approaching.
Pump: The pump's purpose is to steer the outrigger.
Steel Cables: Steel reinforced cables run through the jib and the boom. They are able to 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 supplies.
Rotex Gear: The rotex gear is located underneath the cab and operated by hydraulics. It allows the boom to swivel on this gear.