This design utilizes wire ropes in conjunction with two hydraulic jacks to lift the car at a 1:2 ratio. For every foot that the jacks rise, the car rises two feet. The use of two jacks, one on each side of the car, provides maximum structural stability.
Advantages:
- No jack hole is required and with that there is no risk of oil contamination in the ground.
- Accommodates front and rear openings in any configuration.
- Available for both low and high capacity cars.
- No extensive pit or overhead is required.
- Large platform designs and high capacity projects can be accommodated.
Disadvantages:
- Requires a wider hoistway for the jacks and roped equipment.
- The installation time is greater than that of an ln-Ground application.
Passenger Twin Jack Roped Elevator Diagram:
Single Opening (F)
Double Opening (F/R)
Freight Twin Jack Roped Elevator Diagram:
Single Opening (F)
Double Opening (F/R)
