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Rigging comes from rig, to set up or prepare. Rigging is the equipment such as wire rope, turnbuckles, clevis, jacks used with cranes and other lifting equipment [1] in material handling and structure relocation. Rigging systems commonly include shackles, master links and slings, and lifting bags in underwater lifting.
A block and tackle [1] [2] or only tackle [3] is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift heavy loads.. The pulleys are assembled to form blocks and then blocks are paired so that one is fixed and one moves with the load.
Jay O. Glerum (August 16, 1939 - June 26, 2014) was an American theatre consultant and author, best known for his book, Stage Rigging Handbook, [1] Jay O. Glerum was widely recognized in the technical theatre circles as the author of the Stage Rigging Handbook, referred to by many stagehands as the bible of the industry.
A master link or quick-release link is a roller chain accessory that allows convenient connection and disconnection of a chain without the need for a chain tool. [1] It acts as a set of the chain's outer plates, so joining two sets of the chain's inner plate ends.
Rigging comprises the system of ropes, cables and chains, which support and control a sailing ship or sail boat's masts and sails. Standing rigging is the fixed rigging that supports masts including shrouds and stays. Running rigging is rigging which adjusts the position of the vessel's sails and spars including halyards, braces, sheets and ...
The term comes from the days of sailing ships, when a rigger was a person who worked with rigging, that is, ropes for hoisting the sails.Sailors could put their rope skills to work in lifting and hauling.
Derricks are especially useful for high-rise rigging, jobs that cover a long period of time, or jobs when the impact to street or pedestrian traffic is a concern. [3] Forms of derricks are commonly found aboard ships and at docking facilities. Large derricks mounted on dedicated vessels are known as floating derricks [4] and shearlegs.
PAR Systems was awarded the subcontract for the Main Crane System (MCS) for the Chernobyl New Safe Confinement. the system consists of two overhead bridge cranes, which support two 50-ton trolley hoists, and a Mobile Tool Platform (MTP). The MTP is suspended from a third trolley using a wire rope tensile truss with three paired winches, giving ...