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The generally accepted definition of a crane is a machine for lifting and moving heavy objects by means of ropes or cables suspended from a movable arm. As such, a lifting machine that does not use cables, or else provides only vertical and not horizontal movement, cannot strictly be called a 'crane'. Types of crane-like lifting machine include:
In the ISO control pattern, the left hand joystick controls Swing (left & right) and the Stick Boom (away & close), and the right hand joystick controls the Main Boom (up & down) and Bucket motions (close & dump). This control pattern is standardised in ISO 10968 and SAE J1177. Left hand left = Swing left. Left hand right = Swing right.
Replacing an advertising poster in London using an aerial work platform. An aerial work platform (AWP), also an aerial device, aerial lift, boom lift, bucket truck, cherry picker, elevating work platform (EWP), mobile elevating work platform (MEWP), or scissor lift, is a mechanical device used to provide temporary access for people or equipment to inaccessible areas, usually at height.
The two lower arms—the hitch lifting arms—are controlled by the hydraulic system, and provide lifting, lowering, and even tilting to the arms. The upper center arm—called the top link—is movable, but is usually not powered by the tractor's hydraulic system. Each arm has an attachment device to connect implements to the hitch.
When the mast is rotated, the connected boom is swung from to the side. The control of the lifting location is done by the manipulation of the top pulley system and the rotation of the mast at the base. The load is lifted by another pulley system connected to the top of the boom. [2] In a medium load lifting, another construction method can be ...
This nifty little tool helps you lift heavy objects like large panels of wood or drywall. It clamps onto the top of the panel and has a handle that lets you carry these large slabs right on your side.