10 feet Hydraulic Scissor Lift

Product Details

CONSTRUCTION OF A HYDRAULIC SCISSORS LIFT The various members of a hydraulic scissors lift are the loading platform, hand safety rails, lips, scissors links, base frame, hydraulic cylinders, hydraulic power pack, safety prop-ups, and the electrical control panel. The loading platform is an important member of a scissors lift, it is a platform on which the load sits, load transferred from a truck or a container. It generally has steel chequered plates with load carrying structure beneath it. This should be designed strong enough to withstand dynamic loads arising out by forklifts, trolleys and while material transfer. The hand rails are important safety structure which safeguards the user from free fall in the lifted condition of scissors lift. The lips are bridge structure between a hydraulic scissors lift and trucks. They are foldable type manually or by hydraulic system and sit on the bed of truck or container for easy transfer of trolley or forklifts. The scissors links are another crucial load carrying members. They need to be designed to withstand bending and torsion loads, arising during lifting and lowering. The interconnection hinge points of links carry maximum load and they need self lubricated journal bearings to ensure frictionless and noiseless operation for many years of usage. The base frame is bottom most member. Carry the self weight of scissors lift, payload and reaction loads of hydraulic cylinders. This is intermediate member between scissors lift and ground. The hydraulic cylinders are real muscle in the scissors lift. The important factors to be considered during design stage are less working pressure, sufficient diameter of piston rod to withstand bucking load it encounters during lifting operation. Insufficient diameter of piston may lead to bucking failure on a long run. The hydraulic cylinders could be single or double acting depending upon the requirement and speed requirement of end user. The end mounting should preferably have spherical bearings to accommodate various misalignments during the construction. The hydraulic power pack of scissors lift may have lift lowering block in the hydraulic circuit for its compact size, energy efficient and easy to attend during service and during malfunctioning. It should have manual override control as an alternative to lower the scissors lift during electrical service interruption. Normally, a 24 volt DC supply voltage is preferred for solenoid coil due its less chattering noise and long life even though it involves additional cost for the manufacturer. The electrical control panel of hydraulic scissors lift should have motor protection elements, SMPS for have reduced voltage for solenoid coil and control circuit voltage for limit switches. The reduced voltage of 24VDC saves the life of end user in case of any short circuit situation happens.