The type of chain used with a chain block is imperative for effective operation.
Lifting and rigging chain should not be used for chain blocks. Chain Block chain is made specifically by the manufacturer for the chain block and can only be replaced by the manufacturer. It is made to fit certain size requirements and the pocket wheel inside the hoist.
The other difference you will see in a hoist chain versus a lifting chain is the stretch. Most of the time when you overload a rigging chain or a lifting chain you are going to see the evidence of stretch and this does not happen as frequently with a hoist chain.
Thus lifting chain is not interchangeable with chain block chain.
When it comes to heavy lifting tasks, chain hoists make material handling much easier. These simple devices provide you with enough mechanical power to lift or hoist heavy loads considered too heavy or impossible to lift for a person in a safe and efficient manner. Whether you work in the manufacturing, construction or maintenance industry, chain hoists are prevalent, and knowing how these operate is crucial for overall safety.
Read on to learn more about chain hoists, the different types available for purchase, and how to safely use one on the job.
The basic principle behind a chain hoist is the multiplication of force, allowing users to lift loads much heavier than they could by hand. By pulling down on the chain, this multiplication effect occurs through the use of the system of gears and sprockets in the device. As the force applies to these components of the device, it makes it easier to lift and reduces the amount of energy needed to pull.
In essence, chain hoists allow you to conserve your energy while performing heavy lifting tasks. Other devices that utilize the redistribution of force include snatch blocks , which offset the anchor point to reduce the effort needed to pull an object.
In most industrial or construction settings, there are three types of chain hoists used: manual, electric, and pneumatic. Manual chain hoists operate by hand, while electric and pneumatic hoists utilize electrical and air compression as sources of power.
While most people would opt for an electric or pneumatic hoist for fast and easy lifts, manual chain hoists provide a cost-effective alternative that's easy enough to use and carry to different job sites. Plus, they offer better precision with lifting and lowering loads compared to other types.
Hand chain hoists require the use of both your hands in order to operate them effectively. The simple design includes two loops of chain: one for pulling and the other connected to the load. These devices are preferred for hoisting up high vertical loads, but can also be pulled angularly to keep you at a distance from the load itself.. Once a load is suspended, you can continue to operate the pulling chain from the ground, so long as the load is secured to the hook. Depending on the make, hand chain hoists are designed to handle heavy loads of up to 20 tons.
U.S. Cargo Control offers four styles of hand devices from dependable brands Columbus McKinnon (CM) and Coffing:
On the other hand, lever chain hoists offer a similar design, only they include a single side lever attached directly to the lifting mechanism. These devices can be operated with one hand, making it easier to lift. However, to operate it, one must be close to the point of hook up. Lever devices are ideal for loads that need pulling in horizontal or angular directions, and can handle loads up to 6 tons.
U.S. Cargo Control offers 5 styles of lever chain hoists from the same brands listed above:
Using a chain hoist effectively requires a clear understanding of its components and proper operating procedures. Before using any of these devices, make sure they match the load requirements as well as the lifting height necessary for the job at hand. The devices must exceed the weight of the load you're lifting for safe operations.
Firstly, you want to attach the chain hoist to a solid anchor point before lifting begins. Most lifting hoists include an upper hook on top of the gear housing separate from the chain itself that secures the device for lifting. The anchor provides necessary stability in order for it to work.
Therefore, ensure that the anchor point you use is stable enough to handle the load. This includes ceiling mounts, side mounts, trolley systems, and lifting equipment heavy enough to withstand the weight of the load. Another thing to consider is the positioning of your hoist over the load itself. Ensure that there enough room for you to lift, as well as plenty of slack on your chain hoist to reach the sitting load.
After securing the chain hoist, then you want to attach the lifting hook to the load itself. Make sure there is a safe place to attach your lifting hook to on the load. Verify that the hook is properly engaged and cannot slip off during the lifting process.
Lastly, once you secured both the device and the load to the chain hoist, begin pulling up the load using either your hands or with the lever. While lifting, keep a close eye on the movement of your load in case it swings or sways uncontrollably. Use any available load-bearing aids or taglines to help control the load's movement, and always communicate with any colleagues assisting in the operation to ensure coordination and safety.
Keep your grip on the device at all times and maintain a steady and controlled manner of pulling. To lower the load, simply let up the grip slightly to release the chain. Do not let go of the device when lowering the load so as to prevent dangerous, rapid descent.
Mastering the use of a chain hoist involves safety awareness. By following the steps listed above, you can use these tools effectively and smoothly for a secure lifting operation. We provided additional tips below on safety protocols when handling these devices:
Always consult the instructions and seek training if needed to ensure the safe and effective use of this valuable tool. Contact our product experts for any questions you may have on chain hoists.
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