It’s a simple mechanical device capable of lifting a considerable amount of weight. You will find that they are used in a wide variety of industries due to their flexibility in moving heavy objects without the use of any electricity.
Manual chain hoists are considered more cost-effective compared to the fancier electric or hydraulic hoists. Electric hoists are more expensive from the get-go, but they will also continuously raise your electricity bill.
Because the ones we’re discussing are manual, they don’t require electricity, making them easily portable and more affordable. Manual hoists are also easier to maintain and repair, keeping your costs low.
If you are interested in seeing how an electric model can be of use to you, please give our article “How your company can benefit from using an electric chain hoist” where we go into detail on why this can be a great choice for your required applications.
How Do Manual Chain Hoists Work?
The manual hand chain hoist employs a mechanical advantage that allows the device to leverage small force over a long distance and transform it into large force over short distance. This is made possible by a series of large and small gears.
In order to lift a load, the hand chain hoist operator pulls the hand chain down, which turns the hand chain and in turn rotates the cog. The cog then turns the driveshaft and gears, turning the load chain sprocket, which subsequently rotates the load chain looped over the load chain sprocket, ultimately lifting the load.
Although the larger gears move slower than the smaller gears, they create more force, causing the chain hoist to lift slower than other hoists. A grab hook is located at the end of the lifting chain, allowing a load to attach and detach easily.
Lever hoists work a little differently due to a lever being attached to the mechanism. The hoist operator simply cranks the lever to lift or lower the load. The top hook of the hoist can be attached to any secure supports in order to suspend the lever chain hoist.
Hand Chain Hoist
The basic design of hand hoists, sometimes called chain blocks, necessitates the use of both hands in order to raise and lower weights weighing between 1 1/4 and 50 tons. For maximum support and a safer, more equal lift, hand chain hoists can be fastened to lifting slings (link to products) and chain bags (link to products).
Because you don’t have to stand close to the mechanism like with a lever hoist, hand hoists are perfect for big vertical lifts. You can use the pulling chain from the ground even when the hoist is positioned high above. A brake system is another feature that many chain hoists use to keep the cargo from falling back down.
Although hand hoists are easy and efficient to use, they are not the speediest way to lift loads and therefore are best used when time is not of the essence. Hand hoists should not be employed for continuous lifting, especially lifts that require extended suspension.
Junda is a leading China hoist manuals manufacturer. With a focus on precision and user-friendly formats, Junda’s hoist manuals are trusted by professionals worldwide for their reliability and thoroughness.