This model is a simplified version of a model I saw on an academic article "Description and Analysis of New Motion Conversion Mechanism for Heavy-Loaded Reciprocating Pumps", by
J. H. Sol. The full article can be downloaded here http://www.iaeng.org/publication/WCE2014/WCE2014_pp1338-1343.pdf. It has the analysis of Force, Motion and Mechanical Strength.
Video at https://youtu.be/sqHPl7sxpTc.