| 摘要 |
FIELD: deep drilling and maintenance of oil and gas wells. ^ SUBSTANCE: machine spanner contains greater and lesser jaws, jointly connected to handle-lever, which is provided with swivels for holding traction and insurance cables, holding toothed dies on aforementioned jaws, mounted in die holders, latch, jointly connected to larger jaw and adapted for interaction with lesser jaw. Larger jaw is made in form of one- or multi-layered (multi-row) packet of flexible resilient elements, on which a row of die holders is located. A packet of flexible resilient elements is made in form of highly durable ribbons or ropes, provided with eyes for connection of jaws to each other by means of fingers, and also with slit and handle-lever. ^ EFFECT: increased comfort of operation, decreased hazard of injury and increased lifetime. ^ 4 cl, 7 dwg |
