CN105366003A - Anchor mouth and profile generation method thereof - Google Patents

Abstract

The invention discloses a bionic spiral anchor mouth profile generation method. The method comprises determination of an anchor mouth inner profile line, an anchor mouth top end profile line, an anchor mouth bottom end profile line, an anchor mouth inner notch profile line and an anchor mouth inner notch rotating center trajectory line; the anchor mouth inner profile line is scanned along curved lines of the anchor mouth top end profile line and the anchor mouth bottom end profile line to obtain an anchor mouth inner profile surface; the anchor mouth top end profile line and the anchor mouth bottom end profile line respectively rotate by 90 degrees in the left-right direction 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; and then, the anchor mouth inner notch profile line rotates by 360 degrees along the anchor mouth inner notch rotating center trajectory line to obtain an anchor mouth internal profile. The anchor mouth internal profile surface has an excellent spiral structure to facilitate to design and manufacture an anchor mouth, and in particular, to provide theoretical basis for the casting process; and the internal of an anchor mouth is grooved to facilitate to weld the anchor mouth and an anchor table surface.

Description

A kind of anchor lip and contour generating method thereof

Technical field

The present invention relates to a kind of ship components, specifically a kind of anchor lip and contour generating method thereof.

Background technology

Along with the development of modern shipbuilding cause, while the various performance of raising boats and ships, in order to increase the volume of compartment of hull cargo hold, the corresponding head and the tail Peak Tank that shortens holds.Bring very large difficulty so just to draw anchor testing and the deck anchor system layout of hull.Especially modern ships is in order to improve the speed of a ship or plane, bow drinking water partial design balling-up nose type.Anchor lip, as the vitals of a hull, play vital effect at receipts anchor with putting in anchor process, its Main Function one prevents anchor chain and anchor table top from rubbing; Two is the height and upper surface gradient crown and the anchor lip after having weighed anchor that utilize anchor lip, the laminating that anchor fluke anchor table top is firm, the more important thing is and utilize anchor lip effectively anchor body to be fitted tightly with anchor table top smoothly along former designed path in the process of weighing anchor, complete and wholely draw anchor process.

Active service anchor lip is mainly trapped orbit formula structure and conventional helical structure.Wherein, trapped orbit formula structure, offers a trapped orbit in anchor lip Internal periphery face, anchor shank surface is impelled upwards to run along trapped orbit, thus reach anchor fluke contact outside plate (anchor table top) and tangent with it, impel anchor fluke upwards to overturn, realize drawing anchor.But, the track of trapped orbit formula structure anchor lip is difficult to design processing, and precision is lower, usually occurs that anchor shank can not smoothly inside injection, cause anchor fluke occurring and outside plate (anchor table top) stuck phenomenon in switching process, cause and draw anchor failure; Simultaneously, conventional helical formula structure anchor lip, as everyone knows, New Port boats and ships heavy industry discloses a kind of patent (publication number: CN202765234U) of mooring screw lip, on the basis of traditional anchor lip, Internal periphery face is designed to helix, form helical orbit, make anchor pole be close to spiral Internal periphery face to rise, impel anchor fluke upwards to overturn, realize drawing anchor.But conventional helical structure can not ensure the stability when anchor fluke upset is risen, and causes the fracture that anchor pole is combined out with anchor fluke, anchor fluke can not be found to complete the particular location at anchor lip place at the end of upset is risen, and manufacture and design difficulty, cost is higher.

Summary of the invention

Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of anchor lip and contour generating method thereof.

Technical scheme: for solving the problems of the technologies described above, a kind of anchor lip contour generation method of the present invention, comprises and determines the inner notch outline line of anchor lip inner outline, anchor lip top outline line, anchor lip bottom outline line, anchor lip and anchor lip inner notch centre of gration trajectory; The curve of anchor lip inner outline along anchor lip top outline line and anchor lip bottom outline line is scanned, obtains anchor lip Internal periphery face; Anchor lip top outline line and anchor lip bottom outline line are carried out variable cross section scanning along anchor lip Internal periphery towards each half-twist of left and right directions respectively, after scanning the profile joint obtained, obtain anchor lip exterior contour, then by inner for anchor lip notch outline line along anchor lip inner notch centre of gration trajectory rotating 360 degrees, obtain the in-profile of anchor lip.

Preferably, the track of described anchor lip inner outline is calculated by following formula,

$\left\{\begin{array}{c}x=330e^{0.12t}\cos t\\ y=330e^{0.12t}\sin t\end{array}\right.$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °;

The track of described anchor lip top section profile line is calculated by following formula,

$\left\{\begin{array}{c}x=250e^{0.12t}\cos t\\ y=250e^{0.12t}\sin t\end{array}\right.$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °;

The track of described anchor lip bottom section profile line is calculated by following formula,

$\left\{\begin{array}{c}x=284e^{0.12t}\cos t\\ y=284e^{0.12t}\sin t\end{array}\right.$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °;

The track of the inner notch cross section contour of described anchor lip is calculated by following formula,

$\left\{\begin{array}{c}x=198e^{0.12t}\cos t\\ y=198e^{0.12t}\sin t\end{array}\right.$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °;

The track of described anchor lip inner notch centre of gration trajectory is calculated by following formula,

$\left\{\begin{array}{c}x=561e^{0.06t}\cos t\\ y=561e^{0.06t}\sin t\end{array}\right.$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °.

A kind of anchor lip, this anchor lip comprises anchor lip Internal periphery face, anchor lip top profile, anchor lip bottom profile, the inner notch of anchor lip;

The curve of anchor lip inner outline along anchor lip top outline line and anchor lip bottom outline line is scanned, obtains anchor lip Internal periphery face; Anchor lip top outline line and anchor lip bottom outline line are carried out variable cross section scanning along anchor lip Internal periphery towards each half-twist of left and right directions respectively, after scanning the profile joint obtained, obtain anchor lip exterior contour, then by inner for anchor lip notch outline line along anchor lip inner notch centre of gration trajectory rotating 360 degrees, obtain the in-profile of anchor lip; Above-mentioned each profile is combined, obtains the overall profile of bionical mooring screw lip.

Beneficial effect: a kind of anchor lip of the present invention and contour generating method thereof, have the following advantages:

1, have employed the spiral shell shell structure with good biological characteristic, anchor lip Internal periphery surface is made to have excellent helical structure, so when carrying out receipts anchor, draw also not contact outside plate (anchor table top) after anchor shank enters hawse pipe in anchor process time, helical orbit impels anchor shank face to be upwards close to Internal periphery face along helical orbit to spin rotation, thus reach anchor fluke contact outside plate (anchor table top) and tangent with it, finally make anchor fluke upwards overturn, actv. completes and draws anchor process.

2, because the inside and outside contour surface of the anchor lip in the present invention all obtains according to concrete bionical helix equation, so be conducive to the design and manufaction of anchor lip, especially for casting cycle provides theoretical foundation.

3, because slot treatment is carried out in the anchor lip inside in the present invention, so be conducive to the welding of anchor lip and anchor table top, and make its lightweight, save material, reduce costs.

Accompanying drawing explanation

Fig. 1 is front elevation of the present invention;

Fig. 2 is the rear view (RV) of Fig. 1;

Fig. 3 is that the A-A of this Fig. 1 is to cross section view;

Fig. 4 is by the rotation sweep direction schematic diagram of anchor lip top outline line 2 with anchor lip top outline line 3;

Fig. 5 is anchor lip anchor pole moving contact point schematic diagram;

Fig. 6 is the schematic shapes of anchor lip Internal periphery helix line under system of axes;

Fig. 7 is the schematic shapes of anchor lip top outline line under system of axes;

Fig. 8 is the schematic shapes of anchor lip bottom outline line under system of axes;

Fig. 9 is the schematic shapes of the inner notch outline line of anchor lip under system of axes;

Figure 10 is the schematic shapes of the inner notch centre of gration trajectory of anchor lip under system of axes.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention is further described.

With the hull shape of occurring in nature spiral shell shell for research object, find a kind of log spiral equation r=ae ^{b θ}(wherein a=e ^c, c is integral constant) and meet the modality curves of spiral shell shell housing, so get 100 points respectively at the housing of 50 different spiral shell shells, each point is linked to be line by application ORGIN software, carries out matching, obtain bionical helix equation r=1.4e with log spiral ^{0.12 θ}.According to bionical helix equation, and with reference to anchor lip design regulation, design bionical mooring screw lip of the present invention.

As shown in Figures 1 to 4, a kind of anchor lip contour generation method of the present invention, comprises and determines the inner notch outline line 5 of anchor lip inner outline 1, anchor lip top outline line 2, anchor lip bottom outline line 3, anchor lip and anchor lip inner notch centre of gration trajectory 4; Scanned by the curve of anchor lip inner outline 1 along anchor lip top outline line 2 and anchor lip top outline line 3, direction, as arrow direction in Fig. 3, obtains anchor lip Internal periphery face; Anchor lip top outline line 2 and anchor lip top outline line 3 are carried out variable cross section scanning along anchor lip Internal periphery towards each half-twist of left and right directions respectively, direction as shown by the arrows in Figure 4, after scanning the profile joint obtained, obtain anchor lip exterior contour, then by inner for anchor lip notch outline line 5 along anchor lip inner notch centre of gration trajectory rotating 360 degrees, obtain the in-profile of anchor lip.

On the basis of above-mentioned bionical helix equation, the size of the anchor lip produced according to specific needs, calculates the size of anchor lip various piece and the shape of each bar helix line respectively.

The spiral trajectory of anchor lip inner outline 1 is calculated by following formula (1),

$\left\{\begin{array}{c}x=330e^{0.12t}\cos t\\ y=330e^{0.12t}\sin t\end{array}\right.---\left(1\right)$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °;

The spiral trajectory of anchor lip top outline line 2 is calculated by following formula (2),

$\left\{\begin{array}{c}x=250e^{0.12t}\cos t\\ y=250e^{0.12t}\sin t\end{array}\right.---\left(2\right)$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °;

The spiral trajectory of anchor lip bottom outline line 3 is calculated by following formula (3),

$\left\{\begin{array}{c}x=284e^{0.12t}\cos t\\ y=284e^{0.12t}\sin t\end{array}\right.---\left(3\right)$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °;

The spiral trajectory of the inner notch outline line 5 of anchor lip is calculated by following formula (4),

$\left\{\begin{array}{c}x=198e^{0.12t}\cos t\\ y=198e^{0.12t}\sin t\end{array}\right.---\left(4\right)$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °;

The spiral trajectory of anchor lip inner notch centre of gration trajectory 4 is calculated by following formula (5),

$\left\{\begin{array}{c}x=561e^{0.06t}\cos t\\ y=561e^{0.06t}\sin t\end{array}\right.---\left(5\right)$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °.

The shape of helix line shown in formula (1) under system of axes as shown in Figure 6.The shape of helix line shown in formula (2) under system of axes as shown in Figure 7.The shape of helix line shown in formula (3) under system of axes as shown in Figure 8.The shape of helix line shown in formula (4) under system of axes as shown in Figure 9.The shape of helix line shown in formula (5) under system of axes as shown in Figure 10.

A kind of anchor lip, this bionical spiral shell lip comprises anchor lip Internal periphery face, anchor lip top profile, anchor lip bottom profile, the inner notch of anchor lip; The curve of anchor lip inner outline 1 along anchor lip top outline line 2 and anchor lip top outline line 3 is scanned, obtains anchor lip Internal periphery face; Anchor lip top outline line 2 and anchor lip top outline line 3 are carried out variable cross section scanning along anchor lip Internal periphery towards each half-twist of left and right directions respectively, after scanning the profile joint obtained, obtain anchor lip exterior contour, then by inner for anchor lip notch outline line along anchor lip inner notch centre of gration trajectory rotating 360 degrees, obtain the in-profile of anchor lip; Above-mentioned each profile is combined, obtains the overall profile of bionical mooring screw lip.

The preparation method of a kind of anchor lip of the present invention, have employed the spiral shell shell structure with good biological characteristic, anchor lip Internal periphery surface is made to have excellent helical structure, so when carrying out receipts anchor, draw also not contact outside plate (anchor table top) after anchor shank enters hawse pipe in anchor process time, helical orbit impels anchor shank face to be upwards close to Internal periphery face along helical orbit to spin rotation, thus reach anchor fluke contact outside plate (anchor table top) and tangent with it, finally make anchor fluke upwards overturn, actv. completes and draws anchor process.Because the inside and outside contour surface of the anchor lip in the present invention all obtains according to concrete bionical helix equation, so be conducive to the design and manufaction of anchor lip, especially for casting cycle provides theoretical foundation.Because slot treatment is carried out in the anchor lip inside in the present invention, so be conducive to the welding of anchor lip and anchor table top, and make its lightweight, save material, reduce costs.

As shown in Figure 5, when drawing anchor under the effect of pulling force, anchor body upward movement.Anchor shank enter after hawse pipe with C point cantact, at this moment anchor fluke also contacts with outside plate (anchor table top), and now anchor shank length is greater than the length of anchor fluke, and at this moment anchor shank has started cw and rotates up.Under the effect of gravity and pulling force and friction force, impel anchor body along helical orbit upwards helical rotation.Anchor shank cross-sectional plane and C point cantact, impel under the effect of making a concerted effort the one side of anchor shank prolong helical orbit upwards helical rotation between C point and B point.Now anchor fluke just contacts with outside plate (anchor table top), because the effect of helical surface is from two pawls contact outside plate (anchor table top) of original anchor, changes monodactyle contact outside plate (anchor table top) of anchor into.Anchor monodactyle contact outside plate (anchor table top) time, outside plate (anchor table top) has not been pointed in anchor fluke direction, but anchor fluke and outside plate (anchor table top) tangent.Under the effect of pulling force, anchor fluke upwards can only overturn by setting helical orbit, and two anchor flukes are fitted tightly at A point place and outside plate (anchor table top), thus completes smoothly and wholely draw anchor process.

Claims (3)

1. an anchor lip contour generation method, is characterized in that: comprise and determine the inner notch outline line of anchor lip inner outline, anchor lip top outline line, anchor lip bottom outline line, anchor lip and anchor lip inner notch centre of gration trajectory; The curve of anchor lip inner outline along anchor lip top outline line and anchor lip bottom outline line is scanned, obtains anchor lip Internal periphery face; Anchor lip top outline line and anchor lip bottom outline line are carried out variable cross section scanning along anchor lip Internal periphery towards each half-twist of left and right directions respectively, after scanning the profile joint obtained, obtain anchor lip exterior contour, then by inner for anchor lip notch outline line along anchor lip inner notch centre of gration trajectory rotating 360 degrees, obtain the in-profile of anchor lip.

2. the generation method of a kind of anchor lip contour according to claim 1, is characterized in that:

The track of described anchor lip inner outline is calculated by following formula,

$\left\{\begin{array}{c}x=330e^{0.12t}\cos t\\ y=330e^{0.12t}\sin t\end{array}\right.$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °;

The track of described anchor lip top section profile line is calculated by following formula,

$\left\{\begin{array}{c}x=250e^{0.12t}\cos t\\ y=250e^{0.12t}\sin t\end{array}\right.$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °;

The track of described anchor lip bottom section profile line is calculated by following formula,

$\left\{\begin{array}{c}x=284e^{0.12t}\cos t\\ y=284e^{0.12t}\sin t\end{array}\right.$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °;

The track of the inner notch cross section contour of described anchor lip is calculated by following formula,

$\left\{\begin{array}{c}x=198e^{0.12t}\cos t\\ y=198e^{0.12t}\sin t\end{array}\right.$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °;

The track of described anchor lip inner notch centre of gration trajectory is calculated by following formula,

$\left\{\begin{array}{c}x=561e^{0.06t}\cos t\\ y=561e^{0.06t}\sin t\end{array}\right.$

Wherein, e is constant, and t is the angle that helix line rotates, and the scope of helix line anglec of rotation t is 0 ° to 360 °.

3. an anchor lip, is characterized in that: this anchor lip comprises anchor lip Internal periphery face, anchor lip top profile, anchor lip bottom profile, the inner notch of anchor lip;

The curve of anchor lip inner outline along anchor lip top outline line and anchor lip bottom outline line is scanned, obtains anchor lip Internal periphery face; Anchor lip top outline line and anchor lip bottom outline line are carried out variable cross section scanning along anchor lip Internal periphery towards each half-twist of left and right directions respectively, after scanning the profile joint obtained, obtain anchor lip exterior contour, then by inner for anchor lip notch outline line along anchor lip inner notch centre of gration trajectory rotating 360 degrees, obtain the in-profile of anchor lip; Above-mentioned each profile is combined, obtains the overall profile of bionical mooring screw lip.