Twin Jack Roped Hydraulic Elevators
The Twin Jack Roped Hydraulic Elevator is a holeless design in which wire ropes are utilized in conjunction with two hydraulic jacks. The elevator car is lifted with a 2:1 ratio which means that for every foot that the hydraulic jack rises, the elevator car rises two feet. The use of two jacks, one on each side of the elevator, provides maximum structural stability.
- No jack hole drilling is required which reduces cost and eliminates the possibility of ground contamination.
- Travel can be as great as 100 feet without drilling for a hydraulic jack.
- Accommodates front and side openings.
- No extensive pit or overhead clearance is required.
- Large platform designs and higher capacities can be accommodated.
- Because the rail and hydraulic jack equipment is located on the side or rear of the elevator, additional hoistway space is required.
- Requires more installation time than a conventional installation.
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