- #1
kjr
- 7
- 0
Hi and greetings from new member.
A problem brought me to these forums and i am hoping someone will be able to explain what is going on here.
I am working on this project, for which i need to design a truss/frame to support a load. So i came up with this design (diagram attached).
Black is the mounting plate that the whole structure has to be mounted on.
Gray is the simplified metal structure (i didn't draw the crossmembers for simplicity).
Red is the cable, one end attached to the intersection of the frame, then the cable is passed through 2 pulleys (gray circles) and the other end is attached to a hook that the load is attached to.
The intersection acts as a support pulley to hold the cable in place (that's where the problem lies).
The idea is to redirect the force to act into the mounting plate, instead of perpendicular to it, so the frame is more stable and less susceptible to bending and buckling.
Problem is, when i try to do calculations for it, i need to know the nature of the support reaction force that the cable exerts by resting on that pulley with load attached.
Does anyone have any ideas?
Thank you
A problem brought me to these forums and i am hoping someone will be able to explain what is going on here.
I am working on this project, for which i need to design a truss/frame to support a load. So i came up with this design (diagram attached).
Black is the mounting plate that the whole structure has to be mounted on.
Gray is the simplified metal structure (i didn't draw the crossmembers for simplicity).
Red is the cable, one end attached to the intersection of the frame, then the cable is passed through 2 pulleys (gray circles) and the other end is attached to a hook that the load is attached to.
The intersection acts as a support pulley to hold the cable in place (that's where the problem lies).
The idea is to redirect the force to act into the mounting plate, instead of perpendicular to it, so the frame is more stable and less susceptible to bending and buckling.
Problem is, when i try to do calculations for it, i need to know the nature of the support reaction force that the cable exerts by resting on that pulley with load attached.
Does anyone have any ideas?
Thank you