Hydraulic truck cranes are different compared to other crane types due to the way they particularly work. Hydraulic cranes utilize oil rather than utilizing a winch in order to wind up cables to provide the lifting force. As oil is a fluid that retains its volume, it is incompressible. Therefore, this means it is amongst 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 in his cab. Typically, hydraulic truck cranes use a pump which has 2 gears.
Since the actual crane itself is mounted on a truck, it is able to travel many distances from site to site and there is little dismantling involved. The truck crane has one engine which controls both the truck and the crane.
Other Parts
Boom Telescope: The boom telescope allows the boom to retract or extend thanks to hydraulics.
Jib: The jib is a latticed structure that extends from the boom.
Boom Swing: The boom swing is a large ball or roller which is attached to the carrier. It could swing 360 degrees in both directions. Hydraulic devices control the swing and provide swings at various speeds in order to revolve the turntable gearbox.
Outrigger: Outriggers are units which cranes would utilize to maintain its balance. It uses hydraulics to lift the truck.
Load Movement Indicator: In order to alert the driver that maximum weight is approaching, the load movement indicator's lights flash.
Pump: The pump is the mechanism responsible for steering the outrigger.
Steel Cables: The steel cables are reinforced and run through the jib and the boom. 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 supplies.
Rotex Gear: The rotex gear is located under the cab and operated by hydraulics. It enables the boom to swivel on this gear.