Scissor Lift
A scissor lift is a raising/lowering device that is supported or stabilized by one or more pantograph leg sections. A scissor lift can usually only move vertically. The mechanism used to achieve this is a series of criss-cross folding supports, forming an “X” pattern. The upward motion is achieved by the application of pressure to the outside of the lowest set of supports, elongating the crossing pattern, and propelling the work platform vertically. The platform may also have an extending bridge to allow closer access to the work area (because of the inherent limits of vertical only movement). When extended, a scissor lift can reach anywhere from 21 to 62 feet (6.4 to 18.8 meters) in the air, depending on its size and purpose. It can be powered by hydraulics or an electric motor, but a scissor lift’s design prevents it from traveling at a constant speed. It travels faster in the middle of its journey and slower with more extension