Question

Hvdraulic Svstem Design: A hydraulic-lift table is used to raise a ####-kg crate (the weight value-your first 2 digits and last 2 digits of your school number). It consists of a platform and two identical linkages on which hydraulic cylinders exert equal forces. (Only one linkage and one cylinder are shown.) Members EDB and CG are each of length 2a, and member AD is pinned to the midpoint of EDB. If the crate is placed on the table, so that half of its weight is supported by the system shown, determine the force exerted by each cylinder in raising the crate from 0° to 60o within 2 seconds, a-0.80 m, and L-3.00 m. Give any reasonable value for d which is up to you. a) Determine the pump, motor and hydraulic cylinder specs (motor power, pump type, flow rate, minimum cylinder piston diameter, minimum rod diameter, maximum stroke length) Note: There is more unknown parameters then the known ones. You can select one parameter in a reasonable range by searching online catalogues that is up to you, then you can calculate the rest of the parameters. power, neglect the losses in the hydraulic circuit for this homework (you can make a decision for a factor of safety). When determining the motor b) Draw the hydraulic circuit for all necessary elements for this system considering to hold the load at any height.

Answer 1

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