What is an elevator chassis?
An elevator chassis is a sturdy structure, usually made of steel , that serves as a support for the elevator cabin. This essential component ensures the stability and safety of the elevator, either through direct connection to the piston in hydraulic elevators or to the cable tie-down points in electric elevators .
Types of elevator chassis
There are two main types of chassis , designed according to the type of elevator and the load to be transported:
Backpack or L-shaped chassis
• Use: Commonly used in hydraulic passenger elevators and homelifts .
• Design: L-shaped, with the horizontal section supporting the cab. The lifting system can be lateral (piston on one side) or central (piston under the chassis).
Inverted L-shaped backpack chassis
• Use: An innovative variant that allows installation in extremely small pits. By anchoring the cabin to the top, pit depth requirements are minimized, a smart solution for projects with limited space.
• Design: Its inverted L shape allows it to be installed in spaces with pit restrictions, maintaining safety and functionality.
Portal frame
• Use: Used in electric elevators and freight elevators/car lifts.
• Design: U-shaped or rectangular, they support heavy loads. In electric elevators, they facilitate the installation of traction cables. In hydraulic elevators, they can incorporate up to four pistons for heavy loads.
Regulations applicable to chassis
Elevator chassis must comply with the following safety regulations:
• UNE 81.20 : Safety rules for the construction and installation of elevators for people and loads.
• UNE 81.21 : Safety rules for the construction and installation of new elevators in existing buildings.
• UNE 81.22 : Safety rules for the construction and installation of elevators with inclined trajectory.
