There are several common types of rigging hardware used in lifting and rigging operations. Let's explore some of the most commonly used ones:
Shackles: Shackles are U-shaped metal devices with a removable pin or bolt across the opening. They are used to connect lifting slings, ropes, and chains to the load being lifted. Shackles come in various types, including screw pin shackles, bolt-type shackles, and round pin shackles. They have different load capacities and designs to suit different applications.
Hooks: Hooks are used for attaching loads to lifting equipment. They typically have a curved shape with a latch or safety catch to prevent accidental detachment. Hooks come in various configurations, such as clevis hooks, grab hooks, and S-hooks. They have different load ratings and are selected based on the specific requirements of the lifting operation.
Eye Bolts and Eye Nuts: Eye bolts and eye nuts are threaded fasteners with a looped or circular eye at one end. They are used to create an attachment point for lifting slings, hooks, or other rigging components. Eye bolts are generally screwed into a threaded hole, while eye nuts are fastened onto a threaded rod or bolt.
Turnbuckles: Turnbuckles are adjustable devices used for tensioning and adjusting the length of ropes, cables, and chains. They consist of two threaded eye bolts connected by a central body. By rotating the body, the distance between the eyes can be adjusted, thereby increasing or decreasing tension in the rigging system.
Wire Rope Clips: Wire rope clips, also known as cable clamps or u-bolt clamps, are used to create an eye termination in wire rope or cable. They consist of a u-shaped bolt, a saddle, and two nuts. The wire rope is looped around the saddle and secured by tightening the nuts. Wire rope clips provide a reliable method for making temporary or permanent end terminations.
Swivels: Swivels are rotational devices that allow for the rotation of loads, reducing the risk of twisting or tangling of ropes or chains. They are commonly used in applications where loads need to rotate freely, such as overhead lifting, marine rigging, or stage rigging.
Master Links and Connecting Links: Master links and connecting links are large, strong links used as connecting points between slings, hooks, or other rigging components. They are designed to withstand heavy loads and provide a central attachment point for multiple rigging components.
These are just a few examples of common rigging hardware used in lifting and rigging operations. It's important to select the appropriate rigging hardware based on the load requirements, application, and safety standards to ensure safe and efficient lifting operations.