Manual chain block, also known as a chain hoist or chain pulley, which is a mechanical device used for lifting and moving heavy loads. This particular chain block is a Toho brand model HSZ-10, with a lifting capacity of 10 tons and a lift height of 3 meters.
Key features of chain blocks include:
Manual Operation:
They rely on human power to operate, using a hand chain to lift or lower the load.
Mechanical Advantage:
The gear system reduces the effort required to lift heavy loads.
Vertical Lifting:
They are designed for vertical lifting, with a small allowance for lifting at an angle.
Braking System:
A braking mechanism holds the load at the desired height, preventing accidental lowering.
Safety:
Chain blocks often have safety features like overload limiters to prevent damage.