CN2772953Y

CN2772953Y - Double body ship with double curved surface and low water line

Info

Publication number: CN2772953Y
Application number: CN 200520070034
Authority: CN
Inventors: 倪其军; 钟震德; 尤国红
Original assignee: 702th Research Institute of CSIC
Current assignee: 702th Research Institute of CSIC
Priority date: 2005-03-20
Filing date: 2005-03-20
Publication date: 2006-04-19
Anticipated expiration: 2015-03-20

Abstract

The utility model discloses a double curved surface-shaped catamaran hull with a small waterplane area, which comprises an upper deck, wherein the lower part of the upper deck has two demibodies, each of the two demibodies is uniformly composed of a support post and a diving body, wherein the two support posts are plate-shaped and are mutually in parallel, and the upper parts of the two support posts are respectively fixedly connected to both sides of the lower surface of the upper deck. The utility model is characterized in that the lower surface of the upper deck is laterally arched, the connection position of the lower surface of the upper deck and the support posts is in a circular arc shape, and the height between the utility model and a horizontal surface steps down gradually from a bow to a stern. The utility model can effectively reduce the slamming of waves and has long service life, and the utility model is suitable for being used on various boats with small waterplane areas.

Description

Hyperboloid small-waterplane catamaran body

(1) technical field

The utility model relates to a kind of boats and ships.Be the hyperboloid small-waterplane catamaran body that can effectively reduce wave slamming, long service life specifically.

(2) background technology

Small waterplane area twin hull ship (SWATH), is used widely in the navigation field because it has good seakeeping performance as a kind of High Performance draining boats and ships.Traditional small waterplane area twin hull ship (SWATH), the lower surface of its upper deck are that wet deck is an integral planar, and it laterally with between the pillar inboard adopts the straight line knuckle to be connected.Though this wet deck regular shape is convenient to processing, has following problem:

The one, because its wet deck of this small waterplane area twin hull ship (SWATH) equates all apart from the height between horizontal surface that from the bow to the stern when navigating by water, its stem is vulnerable to the big slamming of wave under high sea situation.This is because the suffered wave slamming of small waterplane area twin hull ship (SWATH) has more present bow, and the later slamming probability of midbody is then very low.The wet deck stem is subjected to serious slamming for a long time, easily makes hull damage, structural distortion.Therefore, the service life of this small waterplane area twin hull ship (SWATH) is not long.

Again because its wet deck of this small waterplane area twin hull ship (SWATH) is the lower surface of upper deck is the plane, it laterally with between the pillar inboard adopts the straight line knuckle to be connected, easily form bigger stress concentration in the junction, the time one is long, and the junction easily forms fatigue damage, crackle occurs.So, also can shorten the service life of small waterplane area twin hull ship (SWATH).

(3) utility model content

The technical problems to be solved in the utility model provides a kind of hyperboloid small-waterplane catamaran body.This hyperboloid small-waterplane catamaran body, service life is longer.

For addressing the above problem, the utility model is taked following technical scheme:

Hyperboloid small-waterplane catamaran body of the present utility model comprises upper deck, and there are two lamellar bodies the below of upper deck, and these two lamellar bodies constitute by pillar and following submerged body.Two pillars wherein are tabular and are parallel to each other that their top is connected mutually with the lower surface both sides of upper deck respectively.The lower surface that is characterized in upper deck laterally is arch, and the lower surface of upper deck and pillar junction are circular arc, the height between itself and horizontal surface from bow to stern by height step-down gradually.

Take such scheme, have the following advantages:

Because the utility model hyperboloid small-waterplane catamaran body, its upper deck be height between wet deck and horizontal surface from bow to stern by height step-down gradually, make that the distance of the wet deck of bow and horizontal surface is bigger, effectively increased the clear headroom of bow wet deck apart from the water surface, thereby effectively reduce the slamming of wave, make hull not easy damaged, distortion, increase service life.

Again because upper deck is the lower surface of wet deck is arch, the junction of upper deck and pillar is a circular arc, can effectively reduce the stress concentration of junction, reduces the fatigue damage of junction, make the junction not be prone to crackle, thereby further improved the service life of hull.

(4) description of drawings

Fig. 1 is a hyperboloid small-waterplane catamaran body scheme drawing of the present utility model;

Fig. 2 is the A-A cross-sectional schematic of Fig. 1;

Fig. 3 is the B-B cross-sectional schematic of Fig. 1.

(5) specific embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, hyperboloid small-waterplane catamaran body of the present utility model contains upper deck 1, and there are two lamellar bodies upper deck 1 below, and these two lamellar bodies constitute by pillar 2 and following submerged body 3.Two pillars 2 wherein are platy structure, their top respectively with the lower surface both sides weld together of upper deck 1.The lower surface of said upper deck 1 laterally is an arch, and the horizontal both sides of this upper deck and the junction of pillar 2 are the circular arc transition.The lower surface of upper deck 1 is a wet deck, and the leading portion of this wet deck is linear curved surface, and make height between itself and horizontal surface from the hull stem to the hull afterbody by height step-down gradually.Thereby make wet deck form double curved surface.Adopt this structure, reduced the slamming of wave effectively, avoided damage, the distortion of hull, prolonged the service life of hull wet deck.

Claims

1. hyperboloid small-waterplane catamaran body comprises upper deck (1), and there are two lamellar bodies the below of upper deck (1), and these two lamellar bodies constitute by pillar (2) and following submerged body (3); Two pillars (2) wherein are tabular and are parallel to each other that their top is connected mutually with the lower surface both sides of upper deck (1) respectively; The lower surface that it is characterized in that upper deck (1) laterally is arch, and the lower surface of upper deck (1) and pillar (2) junction are circular arc, the height between itself and horizontal surface from bow to stern by height step-down gradually.