of the number of moving parts, with maximum lightening and reasonable selection of transmission ratios of the converter and reducer. When there are lateral shock absorbers one must provide for rotation of the rod with the casing of the drive and the guides of the rear support relative to the base. The shock absorbers and dampers are installed on the base, and their connecting rods are attached to the rear part of the guide casing. Spring shock absorbers and dampers are at the same time limiters for angular displacements; for more uniform limitation the shock absorbers and dampers are shifted relative to each other at 45*. The force schematic shown in Figure 3.7 was used to calculate the durability and rigidity of the hull and other elements of the docking mechanism, including the guides for the rear support of the screw. The elastic displacements of the hull, base, and other elements are components of the total deformation of the docking mechanism during shock absorption of impacts with the cone and during rotation after linkage. These deformations have a substantial effect on the characteristics of the shock absorption system. The diameter of the rod, a number of the dimensions of the hull with guides and the base are determined from a rigidity calculation. The maximum axial loads on the rod arise in shock absorption after linkage and during coupling. The maximum force developed by the drive is defined by the forces needed to unite the elements on the docking frame (the guide rods t plungers , and electrical and hydraulic connections etc.) with a source coefficient of developed force , that is Usually , which is reasonable, especially when using a combined shock-absorption-drive scheme, if the maximum longitudinal force in shock absorption is about equal to this value. The diameter of the rod is rated for bending at a maximum lateral force in shock absorption. The rating is made considering the rigidity of the rod.
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