Key Components of Lift Table
Platform
The platform can be of any size that is compatible with the lift tables base frame and the scissors. However, the platform cannot be smaller than the length or width of the scissors or the base frame. But it can be higher and wider than the scissors and/or the base frame. Platforms can be furnished with a variety of options such as conveyor tops, turntables, tilt tops or tops equipped with clamps or special work fixtures.
Scissor mechanism
The scissors of a lift table provide a straight and steady vertical motion while supporting the platform. The two sets of scissor legs are connected by shafts at the center pivot points and upper and lower hinged ends.
Base frame
The base frame supports the rest of the lift table. It has to be strong, rigid and stable. In most cases it is designed to be placed on the floor but it can also be built into a pit, supplied with wheels or casters or furnished with a fork lift chassie.
Hydraulic system
The lift tables power pack (most commonly electro hydraulic) consists of an electric motor, hydraulic pump, hydraulic tank, hydraulic cylinder, piping, valving and the electrical control system. When the UP button is activated, the pump pumps fluid from the tank into the cylinders causing the piston and shaft to move. The piston shaft is mechanically linked to the leg assemblies and drives them to raise the platform. The weight of the platform and gravity combine to create pressure in the cylinder that forces the fluid to flow back to the reservoir. A check valve in the hydraulic line between the pump and the cylinder prevent fluid from flowing backwards so the platform will remain at whatever height it is at when the UP button is deactivated. When the DOWN button is deactivated, the lowering valve closes and the table's height becomes fixated. The valve arrangement prevents the table from lowering if there is a power failure.
Control unit
The standard control unit can either have a push-button function or a foot control function.
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