What is considered a below the hook lifting device?
In simple terms, the American Society of Mechanical Engineers (ASME) states that a below-the-hook lifting device is “a device used for attaching a load to a hoist. Engineered lifting devices are built for picking and moving a very specific load due to its size, shape, or center of gravity.
Which rigging equipment is used between lifting devices and connectors?
A shackle is a two-piece connection device. Slings: An assembly to be used for lifting when connected to a lifting mechanism. The upper portion of the sling is connected to the lifting mechanism and the lower portion supports the load.
What is a lifting device called?
Noun. 1. lifting device – a device for lifting heavy loads. crane – lifts and moves heavy objects; lifting tackle is suspended from a pivoted boom that rotates around a vertical axis.
How often do spreader bars need to be inspected?
You should be aware that OSHA and ASME require a documented Periodic inspection of your lifting and rigging equipment every 12 months (at a minimum) and monthly to quarterly inspections in more severe service conditions, based on the following criteria: Frequency of use. Severity of service conditions.
What is meant by lifting equipment?
Lifting equipment, also known as lifting gear, is a general term for any equipment that can be used to lift and lower loads.
What is the required safety factor for lifting lugs?
Though OSHA references BTH-1, it also in various ways makes reference to a factor of safety of 5. When designing lifting lugs, I have always aimed for a factor of safety close to 5, though embedded in this number are impact effects.
How often do lifting chains need to be certified?
Most of your remaining lifting and rigging equipment like chain slings, shackles, material handling equipment etc. need to be visually inspected at 12 monthly intervals.
What tool is most widely used in rigging?
The most commonly used rigging tools are wire rope slings, polyester webbing slings, chain slings, and the modular lifting solution spreader beams. These all are differently manufactured rigging gears, available in flexible sizes and diameters, different weight lifting capacity, and different strengths.
What are the types of rigging?
Different Types of Rigging Equipment
- Rigging Hooks. Rigging hooks are used when heavy equipment needs to be lifted.
- Pulleys and Blocks. Pulleys and lifting blocks are used when very heavy objects need to be lifted.
- Shackles.
- Eye Bolts.
- Steel Nuts.
- Wire Ropes and Accessories.
- Synthetic Lifting Slings.
What are mechanical lifting devices?
Lifting Equipment
- Air Hoists & Trolleys.
- Drum Lifting Overhead.
- Intelligent Lift Assist Devices.
- Vacuum Lifting Devices.
- Electric Hoists & Trolleys.
- Forklift Jibs.
- Goods Lifting Cages.
- Hand Hoists & Trolleys.
What are the requirements for a below the hook lifting device?
The following requirements apply to below-the-hook lifting devices, such as spreader bars, lifting yokes, lifting baskets, and lift fixtures. 2.1.1 Structural and Mechanical Lifting Devices 2.1.1.1 Marking The rated capacity of each lifting device must be marked on the main structure where it is visible and legible.
What are the below the hook lifters on a crane?
So, what are Below the hook devices? They are structural and mechanical lifting devices (spreader beams, lifting beams, C-hooks, plate clamps, pallet lifters, coil grabs, etc.), vacuum lifters, lifting magnets, scrap and material-handling grapples. CRANE 1 follows the guidelines set forth in the ASME B30.20 standards.
What makes up a load supporting lifter?
A load supporting lifter typically made from structural shapes or fabricated metal and are suspended from a hoist/crane to provide one or multiple load lifting points for better security and control of the load’s movement. Lifting Beams – They consist of a long beam with one top bail and two or more load lifting points.
What does a hook rotator do on a hoist?
A lifting device that enables the lifting of a coil through its inner diameter, in a vertical or horizontal orientation. A motorized hook rotator attaches to the bottom block of a hoist and powers the rotation of the hook for additional load control.