There is this problem I can't figure out. One measurements wheel needs to be attached to a slowly moving but wildly shaking and twitching construction machinery. I am trying to greatly absorb the shocks by means of a spring pictured below (and a damper not pictured). The wheel also needs to move in parallel with the machinery.
In this design I have coupled the wheel to the machinery by a guided spring. The spring stretches and compresses between two metal plates with the upper plate sliding over rod1 and rod2. I am not a mechanical engineer, but I think there will be problems due to the way the wheel is dragged alongside the machinery, i.e. there will be some friction between the two rods and the upper metal plate, causing the spring guide not to work very well.
If this is the case, what is a standardized known to work manner to approach this problem - shock reduction / isolation between the machinery and such a wheel ?