Search results
Results from the WOW.Com Content Network
Working Load Limit (WLL) is the maximum working load designed by the manufacturer. This load represents a force that is much less than that required to make the lifting equipment fail or yield. The WLL is calculated by dividing MBL by a safety factor (SF).
A safe working load (SWL) should, according to the regulations be marked onto lifting equipment with the relevant SWL being dependent on the configuration of the equipment, accessories for lifting such as eye bolts, lifting magnets and lifting beams should also be marked. [5]
is the working load, is the acceleration of gravity, is the maximum lifted mass, which is also called the crane working load limit (WLL) or safe working load (SWL), and is the mass of lifting appliances or parts of the crane that move with the lifted mass.
Lifting equipment, also known as lifting gear, is a general term for any equipment that can be used to lift and lower loads. [1] Types of lifting equipment include heavy machinery such as the patient lift , overhead cranes , forklifts , jacks , building cradles, and passenger lifts, and can also include smaller accessories such as chains ...
Limit load can refer to: Limit load (aeronautics), the maximum load factor during flight; Limit load (physics), maximum load that a structure can safely carry; Working load limit, the load that a lifting device can safely lift
Download as PDF; Printable version; ... but limits lifting capacity. ... ISO 8686-5: "Cranes; design principles for loads and load combinations; part 5: overhead ...
Hoist atop an elevator. A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium.
For example, a crane with a design load of 20 tons is designed to be able to lift loads that weigh 20 tons or less. However, when a failure could be catastrophic, such as a crane dropping its load or collapsing entirely, a factor of safety is necessary. As a result, the crane should lift about 2 to 5 tons at the most.