![]() ![]() ![]() This Paper describes the design as well as analysis of a hydraulic scissor lift. ![]() “ Design, Manufacturing & Analysis of Hydraulic Scissor Lift”, Gaffar G Momin, et al The torque generated by a separate generator or elevator motor in generating mode is directed against torque produced by movement elevator cab and when controlled, a controllable speed of descent to a preset or selected floor can be achieved which provides braking power for a controlled speed of descent to a preset or selected floor, comprising: an a building distribution system electrical supply panel, an elevator controller with an integral battery to support control during power loss or interruption, an electrical drive motor, a load bank, a thiristor or transistor switch or similar operative device, a summing device to sum all control signals and to generate a resultant control signal, a tachogenerator speed feedback device, a dedicated emergency descent controller with pulse width modulation (PWM) output, a mechanical system of shafts and pulleys and respectively, an elevator cab, an alternating or direct current electrical generator, a cable, a permanent counterweight, a detachable counterweight, electrically held spring release locks, detachable counterweight free fall catchers, elevator brakes, a counterweight rail system, and an elevator cab rail system. The movement elevator cab attached to a mechanical system of shafts and pulleys drives either a separate generator or an elevator motor operating in generating mode, converting the kinetic energy of the movement elevator cab into electrical energy. The present invention is based on utilizing the kinetic energy of an elevator cab movement due Reciprocating action of the elevator cab. 428 | P a g e Figure 2: Proposed Mechanism ![]()
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