Due to the way they specifically operate, hydraulic truck cranes are different compared to other crane models. Instead of 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. 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 creates a pressure that moves the piston. This action is maneuvered by the operator utilizing the controls in his cab. Typically, hydraulic truck cranes use a pump that has 2 gears.
Because 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 that can control both the crane and the truck.
Other Components
Boom Telescope: The boom telescope is due to a specific hydraulic operation which enables the boom to extend or retract.
Jib: Jibs are latticed structure booms..
Boom Swing: Boom swings have a large roller or ball attached to the carrier. It can swing 360 degrees in both directions. Hydraulic devices provide swings at various speeds and control the swing in order to rotate the turntable gearbox.
Outrigger: Outriggers are units which cranes will use to maintain its balance. It utilizes 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's purpose is to steer the outrigger.
Steel Cables: The steel cables are reinforced and run through the boom and the jib. They can generate up to 14,000 lbs. or 6350 kg.
Boom Elevation: The boom of the crane ascends utilizing double hydraulic cylinders that allow for raising and lowering materials.
Rotex Gear: The rotex gear is situated beneath the cab and operated by hydraulics. It enables the boom to swivel on this gear.