Hoists are mechanical devices that raise or lower a weight by the use of a drum or similar device around which the chain or rope wraps around a pulley. They are useful for many things, including raising and lowering heavy weights, pulling a heavy object and loading or unloading ships. Hoists have been around for hundreds of years and are still in use in many factories all over the world. In fact, a standard Hoist can lift an automobile off the ground!
Hoists are operated by a number of different methods, including manual winches, electric winches, hydraulic winches and pneumatic winches. Electric hoists are usually used to raise heavy loads, whereas hydraulic hoists are used to pull heavy loads (e.g. truck wheels) and pneumatic winches are used to lift and lower lightweight loads. They are commonly used to lift and lower ladders and scaffolds.
Hoists come in many different sizes and shapes and can be used for a variety of different lifting jobs. The key benefits to using hoists are that they are much safer than traditional methods of lifting equipment (e.g. using ladders and scaffolds), they can be cheaper when purchasing and using one versus using two or more ladders; they take less time than traditional methods to complete a task as there are fewer chances of you coming off and damaging yourself (e.g. tripping over your feet and making a mistake while lowering or lifting the load); and they are much easier to operate. Hoists can be manually operated, electronically operated or pneumatically operated.
There are two main types of hoists: drum mounted and chain and wire rope mounted. Drum hoists use a drum or spindle like mechanism to lift and lower loads, these are generally made out of aluminum or steel. They are very quick and easy to use because there is not a moving part; therefore it is safe and economical. They generally have a limited amount of capacity. These types of hoists typically do not work well for very heavy loads. Also, they usually do not provide a good lift speed.
Wire rope hoists are used to lift small loads, usually light; they are powered by an electric motor which means there is not a mechanical action that could potentially damage the load or cause safety issues. It can cost quite a bit more to buy powered hoists because they are usually electrically powered rather than manually powered. Because of this they usually cost more than drum hoists. However, powered hoists offer a higher lift capacity. In addition, they can be used with less safety risk.
There are many different types of hoists to choose from to meet the diverse needs of various industries. Some of the different types of hoists include: chain hoists, wire rope hoists, and rope ladders. Each of these offers different benefits to businesses when it comes to lifting and moving loads. Therefore, before buying any type of hoist, it is important that a company determines what it needs to accomplish. Based on this information, a business owner can select the best hoist for its needs.