Respect for heritage
Bosch Rexroth’s employees who had the chance to access the original technical documentation of the elevator were all impressed by the ingenuity of its design.
Outline of the original installation before the start of the work
The first task of the team was documentary research and analysis of the original plans.
Main subassemblies overview
Lifting cylinders
General arrangement of the control devices
Drawings of the original installation taken from the book: La Tour de 300 mètres, Gustave Eiffel, ed. Lemercier, 1900
360° immersion in the lift machinery
West lift machinery
Accumulator cylinders
Lift cylinders and hoist trolley
Control room
Pump room
Due to their understanding of the elevators original method of operation, the Bosch Rexroth engineers were able to design a modern solution that ensured the lift returned to its historical principles.
The old lift cylinders were removed
Interpretation O. Ismeurt 2006
3D view of the original installation
Source: DEP Engineering
Elevator cabin
Reflection on the Hydraulics – some of the solutions envisaged before deciding on the final solution