Hydraulic truck cranes are different compared to other crane types due to the way they particularly operate. Hydraulic cranes use oil instead as opposed to utilizing a winch in order to wind up cables to provide the lifting force. Since oil is a type of 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 hydraulic pump generates a pressure that moves the piston. This action is maneuvered by the driver utilizing the controls within his cab. Typically, hydraulic truck cranes use a pump that has 2 gears.
Because the actual crane itself is mounted on a truck, it could travel numerous distances from site to site and there is little dismantling involved. The truck crane has a single engine which could control both the truck and the crane.
Other Parts
Boom Telescope: The boom telescope allows the boom to retract or extend because of hydraulics.
Jib: The jib is a latticed structure that extends from the boom.
Boom Swing: The boom swing is a large roller or ball which is attached to the carrier. It can swing 360 degrees in both directions. Hydraulic devices control the swing and provide swings at various speeds in order to rotate the turntable gearbox.
Outrigger: The outrigger is a unit that helps the crane maintain its balance by using hydraulics to lift the truck.
Load Movement Indicator: In order to warn the driver that maximum weight is approaching, the load movement indicator's lights flash.
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 with the use of double hydraulic cylinders that are capable of being lowered and raised.
Rotex Gear: The rotex gear is located under the cab and operated by hydraulics. It enables the boom to swivel on this gear.