Abstract
The article studies spatial mechanisms with rotational kinematic pairs (hinges) whose geometric axes are crossed at different angles and dependent on the shortest distances between these axes which are the theoretical lengths of the links. There is little information about their use in agricultural machines. There is no open information about the technology used for manufacturing models and field samples. The study describes applications of these mechanisms in agricultural machinery.
Highlights
Spatial mechanisms used in machines can be divided into two groups: mechanisms with kinematic spherical pairs, spherical pairs with a finger, ball-tube pairs, cylindrical pairs and rotational pairs
As for the spatial mechanisms with rotary joints, it is difficult to design them, since there was a significant gap between theory and practice [5,6,7,8]
Spatial mechanisms with rotary joints are used in agricultural machines
Summary
Spatial mechanisms used in machines can be divided into two groups: mechanisms with kinematic spherical pairs, spherical pairs with a finger, ball-tube pairs, cylindrical pairs and rotational pairs (hinges). As for the spatial mechanisms with rotary joints, it is difficult to design them, since there was a significant gap between theory and practice [5,6,7,8]. The researchers tried to create other mechanisms with rotary joints. There was no such system and theory of production of such mechanisms; they were created by a combination of links by trial and error. Russian and foreign scientists began to study this mechanism For this group of mechanisms, it is necessary to observe angular and linear parameters of the links and their interconnection, otherwise the mechanism will be inoperative. The first scientist discovered it theoretically, and the second one made and applied it in practice, developed a new scientific direction in the science of spatial mechanisms with rotational hinges
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