Chain hoists are popular in workshops all across the world. Even some everyday Joe’s have chain hoists in their garage if they love to tinkle with objects that might require the occasional lift. I saw a vintage chain hoist at a fair the other day, and that made me wonder: “What do chain hoists use to lift heavy loads?”
Chain hoists are manufactured with different energy sources; the lifting device can be powered by hand, compressed air, or electricity. The components that chain hoists use to lift heavy loads are distributed throughout its assembly system. The system includes, among others, the chain and gears.
Chain hoists are designed to function in a simple but effective way and therefore require all the components in the assembly system to function as a whole to give it the ability to lift loads. Experts say that all the components of a lifting device need to function together; otherwise, the device can not function as it should. Join me in looking at what I found during my research.
What Components Make A Chain Hoist Lift Heavy Loads?
Every component of a chain hoist works together to give the machine the ability to offer a mechanical advantage. Chain hoists are useful machines because they can lift loads too heavy for people. The components that we will be discussing in this section are:
- The anchorage point.
- The assembly housing.
- The hand gear.
- The lifting gear.
- The lifting chain.
- The lifting hook.
Each component must function together for the chain block to be an effective lifting device. The components we will be discussing under separate sub-headings to make them easier to follow. We will start with the anchorage point.
Role of Anchorage Point With heavy Loads
Chain hoists use requires a solid anchorage point to make lifting effective. The anchor point’s strength will directly impact the weight of the goods that the chain hoist can lift. The anchorage point is a fundamental component in the rigging of any chain hoist operation.
If the anchorage point is not strong enough, the whole system will fail when the chain hoist is used for lifting. The anchorage point needs to be selected carefully according to the chain hoist’s capacity and the goods it will lift.
Experts recommend that qualified people select anchorage points for hoist systems that will remain in a specified place for extended times. The next component that a chain hoist uses to lift heavy loads is assembly housing. It is the next component we will be discussing.
Role Of Chain Hoist Assembly Housing When Lifting Loads
The assembly housing of a chain hoist is the part of the lifting device that holds all the components together. The housing has spaces for the gears, and the chain and the drum part of the assembly housing ensure that the chain can not tangle up inside the gears.
If the assembly housing were to be in poor condition, it would affect the ability of the chain hoist to lift heavy loads. The chain will then move into spaces where it should not be, and then the chains will slip over the gears. If the assembly housing breaks, the chain might fall off the gears. We will discuss the hand gear next.
Role Of Chain Hoist Hand Gear When Lifting Loads
The hand gear is located inside the assembly housing and directly affects the lifting power of a chain hoist because when you pull down on the chain wound around the hand gear, the chain hoist lifts the load. We will discuss the lifting gear next.
Role Of Chain Hoist Lifting Gear When Lifting Loads
The lifting gear is also located inside the assembly housing, and just like the hand gear, it has an immediate effect on the lifting power of a chain hoist. When you pull down on the chain that is wound around the lifting gear, then the chain hoist will lower the load. The lifting chain will be discussed next.
Role Of Chain Hoist Lifting Chain When Lifting Loads
The lifting chain is wound around the gears and then protrudes at the bottom, where the lifting hook is then attached to the chain. There is also a piece of slacked chain that hangs so that the user can use the chain to lift and lower a heavy load.
The chain is manufactured from alloy steel, and it must be lifting-grade steel. The chain’s size and thickness will depend on the hoist’s capacity. Without the correct type of chain, the chain hoist will not be able to lift heavy loads. The lifting chain is one of the critical capacity points as the load will be suspended on the hook attached to the chain. The lifting hook will be discussed next.
Role of Chain Hoist Lifting Hook When Lifting Loads
The lifting hook should be able to handle the capacity of the chain hoist, as this is where the load will be when you are lifting heavy loads.
Everything lowers than this hook should be calculated together with the load to ensure that the hoist is not overloaded. A range of lifting materials can be attached to the lifting hook, including shackles and slings.
The lifting hook on a chain hoist will sometimes swivel, making it easier to rig heavy loads. A safety latch might also be fitted to the hook to make sure that the hook can not come undone from the heavy load.
I had a lot of fun reading up on the various components that a chain hoist used to lift loads. It is evident from the information in this post that the chain hoist requires every single component to contribute to its overall effectiveness of the chain hoist. If any of the components fail, it will negatively impact the chain hoist’s ability to lift heavy loads.
The components that contribute to the chain hoist effectively lifting heavy loads are the hook, the chain, the gears, the assembly housing, and the anchorage point. If we take any of these components away, the chain block will be a glorified pulley with little to no lifting power. I hope that you found the most interesting.