Although all terrain cranes are referred to as a luxury combination of mobile truck hydraulic cranes and rough terrain cranes, they still have lots of differences. As their name suggests, all terrain cranes are multi-functional machines that can travel on all types of terrains at normal speeds. Usually, the all terrain cranes are powered by hydraulic telescopic boom as their main lifting mechanism. The boom is made of steel and with it, all terrain cranes hold the loads. But most hydraulic all terrain cranes for sale dispose with extended boom with telescopic sections and some of them are equipped with a jib. A typical all terrain crane is able to hold very heavy loads due to its cable lines. The cable lines are run by a winch located at the back of the operator’s cab.
Each all terrain crane model has about nine axles and supporting outriggers, which improve the stability when lifting heavy loads. The lifting capacity ranges from 30 to more than 1000 tonnes with maximum height of about 150 meters. The all terrain crane is very efficient for installing oil and gas pipelines, lifting heavy pre-cast buildings, erection of wind turbines and similar construction applications. Its road driving controls are almost same as a typical driven truck and the multiple wheel steering capabilities of all terrain crane improve the exceptional mobility of this machine.
The modern all terrain cranes for sale use hydraulic systems. Their transmission of force is emitted by hydraulic fluid through hydraulic pumps. Most all terrain cranes have two or three gear pumps that press the hydraulic fluid, producing the required force for properly operation. The main pump controls the boom, as it generates most pressure, while the other pump, known as pilot pressure counter-weight pump, counter weights the all terrain crane.
When it comes to operating the all terrain crane, it is operated from the operator station or cab, which is always located on the top, with foot pedals, pedals and joysticks. The joysticks control the boom for moving left and right, forward and backwards, while the foot pedals control the pressure of the pumps and the extension of the telescopic boom. Each control in the operator’s cab is connected to specific hose, which join the hydraulic ram in order to allow the operator of the all terrain crane to control the hydraulic pistons. The spool vale attached to the hydraulic pump with a hose shuts off one of the hoses when the controls are activated.
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