Due to the way they particularly operate, hydraulic truck cranes are different compared to other crane models. Rather than utilizing 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 among the most ideal kinds 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 within his cab. Typically, hydraulic truck cranes make use of a pump which has 2 gears.
Since the actual crane itself is mounted on a truck, it can travel many distances from job to job and there is little dismantling involved. The truck crane has one engine that controls both the truck and the crane.
Other Parts
Boom Telescope: The boom telescope is due to a specific hydraulic operation which allows the boom to retract or extend.
Jib: The jib is a latticed structure which extends from the boom.
Boom Swing: The boom swing is a big ball or roller which is connected to the carrier. It can swing 360 degrees in both directions. Hydraulic devices control the swing and provide swings at varying speeds in order to revolve the turntable gearbox.
Outrigger: The outrigger is a unit which helps the crane maintain its balance by using hydraulics to lift the truck.
Load Movement Indicator: The load movement indicator is lights that flash in order to alert 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 could generate up to 14,000 lbs. or 6350 kg.
Boom Elevation: The crane's boom ascends using double hydraulic cylinders that allow for raising and lowering materials.
Rotex Gear: The rotex gear is operated by hydraulics and situated underneath the cab. It allows the boom to swivel on this gear.