Calculation construction

Hello,

I am an engineering student and I have to calculate something. I am locked in a situation and I don't know how to solve it or if it is correct.

The problem:

We have a steel structure that is welded together. It consists of 4 beams which are welded together.

On the upper beam there is a load of 40 kg (=400 N), the lower beam is supported by a cylinder which gives a normal force (40kg = 400 N).

How I solved:

I made a free body diagram of each beam (4 beams). Each beam is clamped on both sides, so we get a hyperstatic structure.

I started calculating with the upper beam, which is symmetric loaded which made the calculation of the unkown possible.

Where is the problem:

The upper beam has a moment of 50 Nm on both sides. Does the moment of the upper beam gives a moment to the verticale beams? I experience problems with calculating the vertical beams. Since they don't have horizontale (x-axis) forces. Is it possible that this beam only have a moment and no shear force?

This is a drawing of the structure:

Thanks in advance!