Disclosed is a bionic spiral anchor mouth profile generation method, comprising determination of an anchor mouth inner profile line (1), an anchor mouth top end profile line (2), an anchor mouth bottom end profile line (3), an anchor mouth inner notch profile line (5) and an anchor mouth inner notch rotating centre trajectory line (4). The anchor mouth inner profile line (1) is scanned along curved lines of the anchor mouth top end profile line (2) and the anchor mouth bottom end profile line (3) to obtain an anchor mouth inner profile surface. The anchor mouth top end profile line (2) and the anchor mouth bottom end profile line (3) respectively rotate by 90° to left and right along the anchor mouth inner profile surface to perform the variable section scanning. After profiles obtained by scanning are joined, an anchor mouth external profile is obtained. Then, the anchor mouth inner notch profile line (5) rotates by 360° along the anchor mouth inner notch rotating centre trajectory line (4) to obtain an anchor mouth internal profile.

Anchor mouth and profile generation method therefor

The invention relates to a method for treating an anchor blocking accident in an anchor pulling test When an anchor is blocked, the portion, near an anchor blocking touch point, on a hawse pipe is modified to be in a dome shape so that an anchor rod of an anchorage device can be smoothly collected and released in the anchor pulling test, and in other words, anchor pulling operation and anchor dropping operation are smoothly finished Due to the fact that the hawse pipe is partially modified, the field modification workload is reduced, the test process is easy to control, and damage to an anchor test box is reduced; and in addition, an anchor pulling test period is shortened and the result of the anchor pulling test is more reliable and useful

Method for treating anchor blocking accident in anchor pulling test

The invention relates to a processing method of anchor stagnation in an anchor drawing test. In case of the anchor stagnation, the anchor port of a hawsepipe is changed into a combination of a semi-cylindrical shape and a semi-conical cylindrical shape, the semi-conical cylindrical shape has certain inclination, and an anchor pole of an anchorage device is enabled to extend and retract smoothly, i.e., the anchor pole successfully goes into or withdraw from the hawsepipe. Since the hawsepipe is locally changed, onsite modification workload is reduced, the test process is easily controlled, and damage to an anchor casing is reduced. Besides, the anchor drawing test period is also shortened, and the anchor drawing test result is more reliable and useful.

Processing method of anchor stagnation in anchor drawing test

The present invention relates to a method for shaping a bell mouth attached to a bow of a ship. The method includes the steps of: receiving drawings for manufacturing the bell mouth; extracting input data from the drawings; forming a surface of the bell mouth from the extracted input data; comparing the surface and the drawings; and setting an installation position of the bell mouth if the surface coincides with the drawings. The step of extracting the input data has a step of setting a cross section of the bell mouth, a step of setting a plurality of points along the surface of the bell mouth on the cross section of the bell mouth, and a step of obtaining coordinate values of the points. The present invention can shape the bell mouth to be manufactured on site, where the bell mouth is manufactured, by use of the drawings for manufacturing the bell mouth, and can determine whether the bell mouth actually manufactured has a correct shape, thereby manufacturing the bell mouth of the more correct shape.

3 Method for bell mouth shape forming

Provided is a bell mouth design method whereby a bell mouth shape suitable for a ship type can be designed easily without depending on specific craftsmen. The bell mouth design method of the present invention has an initial shape setting step (Step 1) for setting the initial shape of the bell mouth 4; a three-dimensional model creation step (Step 2) for creating the three-dimensional model of the bell mouth 4 and other parts on a computer; a preliminary shape modification step (Step 3) for modifying the outer peripheral shape of the three-dimensional model of the bell mouth 4 so as to be rotatable when the anchor 3 contacts the initial shape of the bell mouth 4; a mechanical analysis step (Step 4) for performing a mechanical analysis of the condition of the anchor 3 being housed using the three-dimensional model of the bell mouth 4 and other parts on a computer; a determination step (Step 5) for checking whether the results of the mechanical analysis satisfy predetermined conditions; and a shape modification step (Step 6) for modifying three-dimensional model of the bell mouth 4 on the computer on the basis of results of the mechanical analysis

Bell mouth design method

PROBLEM TO BE SOLVED: To provide a method of designing a bell-mouth which enables a bell-mouth shape appropriate to a vessel to be designed easily without depending on a particular workman. SOLUTION: The method of designing the bell-mouth includes: an initial shape setting step (Step 1), in which the initial shape of a bell-mouth is set; a three-dimensional model creation step (Step 2), in which a three-dimensional model of the bell-mouth etc. is created on a computer; a preliminary shape correction step (Step 3), in which the outer peripheral shape of the three-dimensional model of the bell-mouth is corrected so as to become rotatable when an anchor contacts the initial shape of the bell-mouth; a mechanism analysis step (Step 4), in which a mechanism in the storing state of the anchor is analyzed on a computer using the three-dimensional model of the bell-mouth etc.; a determination step (Step 5), in which whether or not the result of the mechanism analysis satisfies prescribed conditions is determined; and a shape correction step (Step 6), in which the three-dimensional model of the bell-mouth is corrected on the computer based on the result of the mechanism analysis. COPYRIGHT: (C)2010,JPO&INPIT

Kentaro Watanabe

Papers

Bell mouth design method

Method of designing bell-mouth