Directly Coupled Hydraulic Cylinder Design

DIRECTLY COUPLED HYDRAULIC CYLINDER DESIGN:
Hydraulic elevators use proven hydraulic lifting technology in low to mid-rise buildings (up to 6 floors) to provide a robust and reliable elevator. They are simple in design & cost-effective to install & maintain. A well-maintained hydraulic elevator lasts longer than 20 years before any major modernization requirement. They are extensively used in Malls, Plazas, Apartments, Parking Garages, Hospitals, Schools, Religious places, other ICI buildings etc.  This is a hole-less design and therefore there is no risk of oil contamination in the ground as well as no additional cost of drilling the hole. However, pit & overhead requirements in this design are more than roped design.

1.   Dual Cylinder type:
This design is with two hydraulic cylinders to lift the elevator cab and provides very high structural stability. Cylinders are either single-stage or telescopic. The appropriate type is determined by the travel, available bottom pit and headroom dimensions in the hoistway shaft and other conditions. The single-stage cylinders are typically used in two-stops requirements & telescopic cylinders are used for three and more stops requirements.

Product model range with available Load Capacities, Cab sizes and required Hoistway shaft sizes:

2  Single Cantilevered Cylinder type:
This design is useful for adding an elevator in a 3 to 6 stories existing building with limited foot print space for the hoistway shaft, where a LULA (Limited Use Limited Application) Elevator can’t provide the required Cab Size or Duty Load (Capacity & Speed). A Single Cantilevered Cylinder Passenger Elevator deign requires customization and the load carrying capacity is limited to 909 Kg (2,000 lb). After carefully considering various parameters like required elevator Cab Size, Speed, Total Travel, Number of Floors, Available Pit depth, Overhead height, Hoistway Shaft size & Construction Type etc. it can be determined if a single cylinder design would be suitable or not.
 

Based on above this design is suitable for:

• Lower capacity, limited to approximate 909 kg (2,000 lb)
• Cab size larger than a LULA Elevator but smaller than for a 1136 Kg (2,500 lb) passenger elevator
• Fits in a smaller shaft space, as compared to a 1136 Kg (2,500 lb) passenger elevator
• The cantilevered hydraulic cylinder can be mounted on any of the side shaft wall or can be mounted to the rear shaft wall.

Product model range with available Load Capacities, Cab sizes and required Hoistway shaft sizes:

Hoistway Shaft Sectional Information:

• Maximum number of Stops: 6
• Maximum Travel: 16.76 m (55’ – 0”)
• Overhead required below the Hoisting Beam: 4267 mm (14’ – 0”)
• Pit Depth required: 1524 mm (5’ – 0”)

Solution available in case of a habitable space below the hoistway shaft

Machine room:

• Minimum recommended size to be 1981 mm (78”) Wide x 1981 mm (78”) Deep x 2438 mm (96”)
• Machine room located adjacent to the hoistway shaft at bottom landing with solutions available for a remote machine room
• With machine room door swinging out
• Provided with required electrical fused disconnect boxes, guarded light with a switch, GFCI Plug, fire alarm initiating devices etc.
• Machine room to be constructed as per elevator code and building code with adequate ventilation to suit heat dissipation from the elevator equipment

Standard Product Features with Available Options are:

• Speed range offered between 0.375 m/sec to 0.75 m/sec (75 fpm to 150 fpm)
• Duty Load (Load Capacity & Speed) other than mentioned above are available upon request
• General Class A Loading
• Optional class C loading available for service elevators
• Car sizes other than mentioned above are available upon request
• Solutions available for varied type of Hoistway construction
  
  Cab finishes:
• Recess provided in platform for finished floor by others
• Optional Aluminum/ St Steel checkered flooring
• Walls & Ceiling are in plastic laminated finish
• Optional #4 St. Steel elevator cab/ Glass Panel cab/ Rigidized metal panel finish
• Elevator cab can also be provided in plywood finish with suitable weight contingency for wall cladding, final finishing by others
• Other finishes may be available upon request.
  
  Entrances:
• 2-Speed horizontal sliding, Automatic operation, provided in prime/powder coated finish
• Optional Single Speed Entrances/ Centre Opening Entrances
• Optional #4 St. Steel entrances with/ without glass inserts in the door panels
• Aluminium sills with option for St. Steel/ Nickel Alloy entrance sills
• Other finishes may be available on request.
• Please contact our sales department for entrances at right angles, sales@expresselp.com
  
  Signals included:
• Car LED Lighting
• Car Operating Panel to include: Emergency Light, Capacity Tag, Cab Position & Directional Indicator, Landing Selection Button, Door Open/Close Button, Fire Fighters’ Cabinet, Alarm Button, Autodialer Button & Speaker, Keyed Stop Button, Independent Service Keyed Button
• Optional service cabinet in COP
• Arrival  lights with chime
• Provision for security card for restrictive access & Camera
  
  Safety Features:
• Handrail
• Infra-red door curtain
• Battery operated alarm
• Battery operated emergency cab lighting
• Autodialer
• Optional battery operated power of lowering
• Fire fighters operation etc.
  
  Microprocess based controller with
• Simplex or multi group control operation available
• Full collective/ down collective or selective operation

Due to various end users’ functional requirements, site constraints including fire separation requirement between the floors, structural and other building code requirement every elevator proposal is a unique configuration carefully prepared by selecting from the above mentioned product features (and available options). This is to ensure that the selected product configuration suits overall project requirements. Therefore, in order to get a comprehensive design proposal, ensuring that all the requirement have been identified and incorporated in the design at the planning stage, please contact us at sales@expresselp.com. Also feel free to contact us to get a copy of brochure, e-brochure or a sample drawing or a copy of our planning guide of all our products. One of our knowledgeable sales members would be happy to assist you and help you prepare a project specific elevator design proposal.