MIL-HDBK-1191
capacity of 225 kilograms (500 pounds). A platform size of 680mm x 1200mm (27
by 48 inches) is acceptable. Automatic loading and ejection devices of larger
capacity and size, used in conjunction with automatic cart lifts, will conform
to the ASME standards for elevators. Determine the dimensions of the car lift
platform by the largest cart selected for dietary, linen or other materials
distribution.
17.11.4.6
Speeds for automatic cart lifts will be as follows:
Number of Floors
Type of Drives
Rated Speed
M/S
(fpm)
4-5
Geared
1.015 (200)
6-9
Geared
1.524 (300)
10 and over
Gearless
2.540 (500)
17.11.4.7
Dumbwaiter and Cart Lift Control. Distribution and Return
programs will be provided for dumbwaiter and cart lift operation. The control
station will contain a switch from program selection and a series of dispatch
buttons that correspond to the floors served. Design the system to permit
dispatching carts to any landing from the central dispatching area and to
provide for return of carts only to the central dispatching area.
17.11.4.8
Dumbwaiter and Cart Lift Signals. Stations at each floor or
landing will contain lights to indicate which program is in effect.
17.11.4.9
Cart lifts with automated transfer devices. Doors shall be power
operated with upper and lower safety edges. Maximum cart lift capacity shall
be 454 kg (1000 lb).
17.11.5 Auto Guided Vehicle System - Vertical Automation. Systems designed
for vertical-only transportation of materials on carts shall use elevators,
guide path, and other devices, as applicable. Designs shall consider future
upgrade to allow horizontal travel.
17.11.6 Automated Horizontal and Vertical Bulk Handling Systems. Automated
cart transportation systems may be used where LCC justified for horizontal and
vertical transportation of materials.
17.11.6.1
Automated Guided Vehicle Systems. Automated Guided Vehicle
Systems shall be an integrated turnkey automated cart transportation system.
Design the Automated Guided Vehicle Systems to incorporate the latest state of
the art in proven technology; systems not proven in previous applications
shall be avoided. Automated Guided Vehicle Systems may utilize a variety of
transportation vehicles including "cart carrying" type, forklift type, tow
type, and Automated Storage and Retrieval System type.
Consider the use of automatic cart systems for material distribution provided
the use of automated equipment can reduce the number of service elevators
required and the installation can be justified on a cost effective basis. An
increase in construction cost must be justified by a corresponding decrease in
operating or other life-cycle, cost, through reduction of manpower needs,
reduced energy consumption, or improved service to patients.
17.11.6.2
Other Automated systems. Other Automated Vertical and Horizontal
Cart transportation systems may be reviewed where applicable and cost
effective for a given project.
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