| 摘要 |
FIELD: mechanical engineering. SUBSTANCE: invention relates to barriers designed to prevent unauthorized passage of vehicles onto watched objects. Proposed barrier contains beam one end of which is hinge secured on one support, and other end is secured on other support by means of mechanical lock. Novelty is than beam is welded of two channels and stretched steel cables are fitted inside beam and secured at ends of beam. Steel tenons are welded outside the beam. EFFECT: improved strength and guard characteristics of barrier, its performance characteristics and enlarged range of application. 1 dwg |
