Scissor Lift Safety Training Langley - A scissor lift is a kind of platform lift which moves vertically. The lift table is moved in a vertical motion due to criss-cross folding supports which are linked in what is referred to as a pantograph. The platform is able to propel vertically because of the application of pressure to the outside of the lowest set of supports. This elongates the crossing pattern and causes the machine to rise. Several kinds of scissor lift even have an extending "bridge" that allows operators to have closer access to the work area because the vertical only movement can have some inherent restrictions.
There are lots of different types of scissor lifts on the market. They could be powered by different ways like mechanical, via a lead screw or rack and pinion system, or pneumatic or hydraulic. Several models might need no power to enter "descent" mode but instead depend on a simple release of hydraulic or pneumatic pressure depending on the power system utilized. These pneumatic and hydraulic methods of powering these lifts are preferred since releasing a manual valve provides a fail-safe choice of returning the platform to the ground.