Hydraulic truck cranes are different from other crane types due to the way they specifically 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 amongst 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 action is maneuvered by the operator utilizing the controls within his cab. Normally, hydraulic truck cranes utilize a 2 gear pump.
Because the actual crane itself is mounted on a truck, it could travel numerous distances from job to job and there is little dismantling involved. The truck crane has one engine that can control both the truck and the crane.
Other Parts
Boom Telescope: The boom telescope enables the boom to extend or retract because of hydraulics.
Jib: Jibs are latticed structure booms..
Boom Swing: The boom swing is a big ball or roller that is connected to the carrier. It is able to 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 would utilize to maintain its balance. It uses hydraulics to lift the truck.
Load Movement Indicator: In order to alert the operator 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 boom and the jib. They are able to generate up to 6350 kg or 14,000 lbs.
Boom Elevation: The crane's boom ascends utilizing double hydraulic cylinders that allow for lowering and raising supplies.
Rotex Gear: The rotex gear is operated by hydraulics and situated under the cab. It enables the boom to swivel on this gear.