TL;DR Summary: I need help to understand the concept for load absorbtion in a spiral scissor lift.
Hello everyone!
I have a mechanical engineering project for the end of this semester.
We have been tasked to design a spiral scissor lift similar to what’s in the attached picture. My question...
I need to calculate the forces in each of the beams in one of the two equal cross sections of the truss attatched in the picture. The second picture is the cross section of the truss.
As you can see on the 3d picture of the truss the loads are attatched with equal distance inbetween the 2...
Yes I meant BD times the distance from E.
If I do the loads times thier horizontal distance from E; must that be equal to the x component of the tension BD times the distance EB?
On annother note: If i were to draw the free body diagram of the structure. Can I write the tension BD as an...
Alright thanks, so to see if I understand you. If I were to draw a free body diagram of the structure, can i ignore the fact that there is a pulley in b and Just draw rope BD as an external force pulling at the angle calculated by the distances given on the right side?
And then calculate the...
Yes let me see if I understand you correctly. The the loads times thier horizontal distance will be equal to the x component of the rope BD correct? As the y component goes through point E and excerts no moment. What i still dont understand is how to inerprete a smooth pulley wheel such as B...
Alright lets assume you are correct, that c is rigid and e is a hinge. I still cant see how to solve for the tension. I still end up with too many unkown variables. How would you proceed?
I really cant wrap my head around how I can find the tension i in the rope going from A to D via the smooth pulley B.
P=4.91N
Distances are in mm
I assume I cant use the triangle EBD as it can be dynamic without the triangle ABC changing. I know I can find the y component of the tension in...