Scissor Lifts
Scissor Lifts are specially made for working on projects directly overhead since they are only capable of lifting on a vertical plane. Scissor Lifts are made of a series of folding and linked supports which crisscross in an "x" pattern. The pressure needs to be applied to the outside of the lowest set of supports in order for the unit to elevate into the air. This process elongates the crossing pattern that vertically propels the unit. If the machine is hydraulically or pneumatically powered, lowering of the platform can be done by easily opening a valve to be able to release the pressure.
There are a wide array of scissor lift models that vary from outdoor rough terrain models to indoor models. The rough terrain scissor lift is designed specially for construction applications. The rough terrain models are particularly outfitted with stronger and more reliable tires which run by gas or diesel engines.
4 Mechanical Lifts
Mechanical lifts are generally smaller models that rely upon screw threads or rack-and-pinion to raise the platform. The mechanical lifts are limited in the heights they can extend to and the amount of weight they can carry. Mostly, these types of lifts are utilized for maintenance jobs like indoor tasks and changing light bulbs.
The very first scissor lift was build during the 1970s. The basic design is still used, even if a lot of improvements have been made in the materials utilized and safety features added. This particular machinery became the ideal alternative for lots of indoor retail establishments that were starting to expand their inventory. The scissor lift is similar to the forklift. The scissor lift has become sought after and well-known for its portability and its effectiveness. Additionally, the scissor lift provides the only industrial platforms that could be retracted and could fit into the corner of the building.