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2008 National AgrAbility Workshop Download PowerPoint Viewer |
Section 3: Assistive Technology Notes Commercial LiftsLife Essentials LiftLife Essentials (LE) staff has over 37 years of hands-on experience in the rehabilitation and automotive equipment technology industries. The company uses the latest innovations in mobility equipment and products to build lifts for combines, tractors, and trucks. Each lift is tailored to fit the ability and needs of the specific customer. Because LE specializes in producing lifts, it can offer "off the shelf" solutions to farmers with disabilities that other companies do not. LE staff reports that most tractors built in the last five to six years have cab door openings and cabs that are large enough to accommodate the modifications necessary to install a Seated Pilot or a Standing Platform Lift. Despite older models small cabs and cab-door openings, to date, LE has been able to manufacture a lift to fit any tractor.
Specifications & CostsA Seated Pilot Lift weighs approximately 550 pounds and is powered by the equipments 12-volt battery. It has two sets of controls (a) a hand held switch box connected by a cable to the lift operators location or a radio frequency switch box that can be worn around the operators neck on a lanyard and (b) a control mounted at the machine operators location. The Pilot Lift has a vertical mast that raises a 2-axis motorized arm and seat that allows the operator to move in three directions while seated. This maneuverability enables an operator to transfer from a wheelchair onto the lift seat and then onto the tractor seat. Movement is achieved with a six-function pendant, enabling users with good upper-body strength to position themselves in the operators compartment without the help of others. The current price of a tractor lift is approximately $8990.00 and a combine lift is approximately $9250.00. LE technicians travel across the U.S. and into Canada to install lifts. Basic installation fees are $900 plus the travel and shipping fees. With proper care and basic maintenance, LE lifts are still working after 18 years. Truck Mounted LiftIn early 2001, LE staff manufactured and installed their first lift that mounts into the bed of any pick-up truck. The lift is bolted into the truck frame with 4 bolts and has an eight-foot reach. A person can back the truck up close to the equipment, transfer from the truck onto his or her wheelchair, then onto the lift seat, and then be lifted up and into the tractor or other equipment. The mast tilts over the top of the cab for transport and it has two hydraulic stabilizers that level and stabilize the truck while the lift is in use. This lift is powered the 12-volt truck battery and uses radio frequency remote control for the lift and arm motion. The switches for the stabilizers and the mast are mounted on the back end of the truck. The lift cable can be installed on the truck either at the farm or at the LE shop. The lift takes up just over half of the truck bed leaving the remainder open for hauling. After unscrewing the four bolts and disconnecting the wire harness from the battery, the lift can be removed with a hoist or front loader and stored until needed. This unit costs $14,300. Safety ConsiderationsAlthough LE builds a standing platform and a seated lift, the staff report that, "we do offer a Platform Lift, but we find that most customers, for the price, prefer the Pilot lift." The seated lift is more adaptable and gets the person into the cab. It includes a seatbelt that goes around the person, making his/her position on the lift more secure than on the standing lift. People who have used the lift report that they feel safer and more secure with a seatbelt around them. In addition, if later the person should not be able to stand, the platform lift would have to be changed to a seated lift. In the study conducted at the University of Pittsburgh (Willkomm, 1997), of 21 tractor lifts, the LE Seated Pilot Lift was reported to have the lowest number of ergonomic risk factors when compared to the lifts made by farm families themselves or by local machine shops. During the past 16 years, no falls have occurred from the over 300 LE lifts that have been manufactured and delivered to farmers and ranchers. Because the truckmounted lift is brand new, no report on its ergonomic risk factors is yet available. Reference: Wilkomm, T. (1997). Risks in using modified tractors by operators with spinal cord injuries and their co-workers. University of Pittsburgh, Doctoral Dissertation.
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