| 摘要 |
FIELD: construction. ^ SUBSTANCE: device comprises a support site, supply gas lines, a spark gap contacting with a cable. On the support site there is a tubular rod fixed hingedly as connected to gas lines and equipped with a return mechanism, a hook of a position fixator and a spark gap fixed at the rod's end. The support site is equipped with a protective fairing, anchors and a grip of the position fixator made in the form of a rigid bracket and an elastic latch equipped with tension rope, fixed on the support site. At the same time the tubular rod is made in the form of a packet of pipes connected with supply gas lines via flexible nozzles, an air header and a flammable gas header, and at the outlet of the pipes packet the latter are equipped with check valves. The packet of pipes is made of pipes with identical diameter fixed with braces, at the same time three pipes are for flammable gas, and two - for air. The return mechanism is made in the form of two twist springs with hooks fixed on the brace and on the support site. The spark gap is made as an elastic steel ruler with connectors fixed in perforations of the latter having electrodes of the supply cable. ^ EFFECT: prevention of ice jamming, higher safety level, efficiency in large ice blocks crushing during ice drifting, reduced power inputs and higher ecological compatibility. ^ 7 cl, 8 dwg |
