| 摘要 |
FIELD: shipbuilding. SUBSTANCE: shipboard drawing anchor 1 has flue 8 and tail-piece 3 secured to flue 8. Shipboard anchor is used for draw embedding in bottom at anchorage by pulling anchor 1 mainly horizontally by tail-piece 3. Two modes of operation of anchor are proposed by means of lines passing between point of attachment (4A, 4B) of anchor chain and tail-piece and centroid of flue 7. Lines are varying. First line is used for draw sinking of anchor 1 and second line is used for drawing the sunken anchor; tension force at anchor may be directed upward due to increased holding power of anchor due to area of flue lying across relative to lifting force. Change of direction from first line to second line may be effected by means of tail-piece 3 swinging on axle; swinging is controlled by means of control devices which ensure selective swinging of tail-piece on axle. Two separate points (4A, 4B) for securing the anchor chain on tail-piece 3 are alternatively presented as first example with two separate chains secured to these points due to which two modes of operation of anchor are obtained by transfer operation from first chain to second one. Second example illustrates motion of single anchor chain by means of guide from first point of attachment (4A) to second point (4B). EFFECT: enhanced reliability. |
