transpallet kinemetrics

[knofed]

hello to all, I present briefly, my name is federic and mechanical engineering study, thermomechanical address. I'm at the last year of the master's degree. for one of the last exams I have to carry out a tesine that previews the design of a mechanical system to please. being me little accustomed to the design I chose to design it feeling quite simple a classic manual transpallet with hydraulic piston. However, I have experienced problems in the definition of the system's kinematics. in particular I can not correlate the various positions of the parts to a single parameter (I had thought about the angle of inclination of the front fork) so as to calculate then the binding reactions to the change of it. I couldn't find anything on line about this type of machine, so I'm going to attempts . I would be very grateful if someone could tell me, if it exists, of the material I can consult to solve the problem or alternatively someone who can tell me how to set the system's cynamic. Thank you in advance for the answers. Faithful

 

[meccanicamg]

look on the forum with you make the pantograph lift. the cylinder makes the system isstatic only if it does not move. then you will have n calculation situations and you will have to find the maximum.

 

[knofed]

look on the forum with you make the pantograph lift. the cylinder makes the system isstatic only if it does not move. then you will have n calculation situations and you will have to find the maximum.

Thank you very much, I had actually begun to calculate the reactions for the two limit situations, lowered holes and forks at the maximum height, even if reflecting the most heavy situation should be at the minimum height in which the holes lift the load.
another doubt I have about the movement of forks. I'll explain better with a small attached pattern.
the rotation of the rear balancer makes the distance of the wheels from the various holes to the variable of the lift. Now I can't understand if this distance is compensated by a rotation of the actuator, which ''steams'' an angle of about 11° from the minimum height to the maximum, or if the actuator remains vertical and everything is compensated by the rotation of the holes. in the construction of my scheme I hypothesized that the holes always remain parallel to the ground but not having at the disposal a transpallet for verification I do not know if it is actually the fork or the actuator to compensate for everything.

 

[meccanicamg]

the transpallet remains parallel to the floor.
maximum effort with low transpallet.

 

[volaff]

look on the forum with you make the pantograph lift. the cylinder makes the system isstatic only if it does not move. then you will have n calculation situations and you will have to find the maximum.

There are several threads, which is what you're referring to?

 

[meccanicamg]

I'm referring to the x-ray. read them all if you want to frame the problem.

 

[knofed]

I have computed for the calculation of the binding ratios, is it normal that for a maximum load on the holes of 2000 kg the piston is having to apply a double lifting force regarding the load? ? ?

 

[meccanicamg]

If the levers are disadvantageous yes. will be for the irreversibility of the load...however you see well