| 摘要 |
FIELD: sport.SUBSTANCE: invention relates to entertainment and may be used as a gymnastic apparatus for skating onto various flat mainly surfaces. Engineering solution consists in that in circular roller consisting of rigid ring with tread with installed inside carriage provided with roller supports, and steering elements for hands made in form of a rigid frame, ring with tread is composed of rim with pneumatic tyre, load-bearing carriage and steering elements are mounted at corners of two adjacent to ring triangular frames connected by three pairs of shafts, on inner of which there are roller supports under rim on outer of which friction rollers are mounted in form of single-cavity hyperboloids under pneumatic tyre, symmetrically to ring on bottom external shafts are mounted additionally support wheels or pulleys with covering tracks. At least one of three friction rollers in form of single-cavity hyperboloids serves as drive rim with pneumatic tyre.EFFECT: higher manufacturability of ring roller.1 cl, 1 dwg |
