Abstract
Engineering industry is one of the prior sector where application of modern innovative technologies allow to gain better productivity. In order to produce new machines and devices we have to develop its design methods. As marketing analysis shows, there isn’t any manufacturer of load lifting mechanisms in our country. “Nurnberg scissors” type load lifting mechanisms are produced abroad. But such load lifting platforms are very dangerous and might overturn since equipments’ stiffness is low. Also these load lifting platforms are very heavy. The main reason is when mechanism is in the built-up condition its state is close to singularity, that is why it is very big on reactions of kinematical chains, the value of balancing force is very high. For instance in some equipments it can be observed that balancing force is 16 times higher than lifted load. The purpose of this study is to investigate optimal method of force transmission of synthesis of hydro cylindrical chain of load lifting lever mechanism and efficiently design it.