Symbolic representation of bearings that follow a horizontal bar of different lengths. ภาพตัดปะ

movement possibilities in the plane: 1) Horizontal displacement and rotation; 2) Parallel displacement in all directions; 3) Linear movement; 4) freely movable rod end; 5) Rotation; 6) Parallel displacement along a specified path; 7) Clamping; 8) Vertical parallel displacement and rotation;