Below the hook lifting device
A "below the hook lifting device" (BTHLD) is a type of lifting equipment used to attach to, lift, and transport heavy loads. Unlike overhead cranes or gantry cranes, which are mounted above the load, below the hook lifting devices are attached directly to the load itself, typically using hooks, slings, clamps, or other attachments. These devices play a critical role in various industries where lifting and moving heavy objects is a common task. Below are some key points about below the hook lifting devices:
Types of Devices: There is a wide range of below the hook lifting devices available, each designed for specific types of loads and applications. Some common types include:
- Hooks and Hooks Blocks: Various hook types, such as clevis hooks, eye hooks, and swivel hooks, can be attached to cranes and hoists for lifting purposes.
- Lifting Beams: Lifting beams distribute the load's weight and can be used to lift loads with multiple connection points.
- Spreader Bars: Spreader bars are used to balance loads and maintain stability during lifting operations.
- C-Hooks and Coil Lifters: These are designed for lifting cylindrical loads, such as coils or pipes.
- Vacuum Lifters: Vacuum lifters use suction cups to grip and lift objects with smooth, non-porous surfaces.
- Clamps: Clamps are used to grip and lift loads with irregular shapes, such as sheets of metal or concrete blocks.
- Magnets: Magnetic lifters are used to handle ferrous materials by utilizing magnetic force.
- Grabs: Grabs are used to handle bulk materials like sand, gravel, or scrap metal.
Design and Safety: Below the hook lifting devices are designed to ensure load stability, minimize the risk of load damage, and prevent accidents during lifting operations. They often include safety features such as locking mechanisms, load indicators, and overload protection.
Load Capacity: Different lifting devices have varying load capacities, and it's essential to select the appropriate device for the specific weight and dimensions of the load being lifted.
Regulations and Standards: The design, manufacture, and use of below the hook lifting devices are subject to industry regulations and standards that ensure safety and compliance. These standards may vary by region and industry.
Qualified Personnel: The selection, inspection, and proper use of below the hook lifting devices should be performed by qualified personnel who are knowledgeable about lifting operations and safety protocols.
Using the right below the hook lifting device for a specific application is crucial to ensure safe lifting, prevent damage to the load, and maintain the well-being of personnel involved in the operation. It's important to adhere to manufacturer guidelines, industry standards, and safety regulations when using these devices.