FIELD: sports; games.
SUBSTANCE: method implies preliminary casting from plastic of two erector element parts as open box-like forms with cylindrical protrusions on the catenary side, with a board being formed on one half of the element part. The board has a protrusion of segment, semicircular, triangular, rectangular or trapezoidal cross section. On the other half, a notch of the same cross section is made. Cylindrical protrusions are made hollow, directed to the open part of the erector element, open from the catenary side and closed from the opposite side. After casting is finished, the parts of the element are placed symmetrically with their open parts directed towards each other, so that the board with protrusion faces the one with notch. Then the parts are connected until the protrusions are completely fixed in the notches.
EFFECT: improved operational reliability.
3 cl, 12 dwg
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