Water spaceship main hull with small head water resistance, tail water assisting and rudder braking function

Abstract

The invention provides a water spaceship main hull with small head water resistance, tail water assisting and a rudder braking function. The water spaceship main hull is composed of a square main cabin section with the length of a, the width of b and the depth of c, a main hull head with the top view sharp and round and the side view round corner, a main hull tail with the top view sharp and round and the side view triangular rear view inverted square groove, the brake rudder and a water tumbler drain hole. The device has the effects of energy conservation, safety and high speed. The appearance of the main ship body has a unified resistance-reducing and energy-saving safety standard and does not follow the meaning of a designer any more.

Description

Technical Field

[0001] The present invention relates to the main hull (the part below the main deck) of a water fast transportation vehicle, a watercraft. The head reduces the resistance; the tail obtains the auxiliary power; and the rudder has a braking function in addition to the traditional steering function. Background Art

[0002] The watercraft is the inventor's prior invention. The inventor is committed to the research of energy-saving, safe and high-speed ships, has continuously made new achievements, and has submitted a number of invention patent applications.

[0003] The technical solution is to improve the drag reduction effect of the head; improve the auxiliary power effect of the tail; the rudder has a braking function; and the water drain hole of the water tumbler improves the ability to resist wind and waves. Summary of the invention

[0004] Improve the shape of the bow to enhance the drag reduction effect; improve the shape of the stern to enhance the effect of obtaining auxiliary power; the rudder can be used for both steering and braking; the tumbler drain hole enhances the ability to resist wind and waves, turning the boat into a tumbler on the water.

[0005] The technical solution adopted by the present invention to solve its technical problem is: The main cabin section of the main hull is square, with a length of a, a width of b, and a depth of c.

[0006] After the size of the main cabin is determined, the size of the bow and stern is also determined. The main hull appearance has a unified drag reduction, energy saving and safety standard, and is no longer subject to the designer's will.

[0007] After adding a semicircle with a diameter of b to the bow, add the part surrounded by three equal circles with a diameter of b (forming a pointed circle); the vertical surface is vertical. The height of the pointed circle (the distance from the tip to the square edge) is The distance between the front and rear tips of the deck (hull length) is

[0008] Fore bottom fillet: The center of the circle is on the vertical line of the center of the head tip circle, passing through the tip of the main deck and tangent to the bottom of the square main cabin section. The diameter of the circle of the fore bottom fillet is

[0009] The head is pointed and round, the vertical plane is vertical, and the resistance in the left and right directions is minimal (zero degree transition to the left / right and back).

[0010] The bottom of the head is rounded and tangent to the square bottom edge, with the smallest vertical resistance (downward, zero degree transition); as the draft increases, the pressure increases, but the angle between the tangent and the horizontal line decreases until it reaches zero, and the increase and decrease in water resistance is significantly reduced; compared with the inclined plane with a fixed angle, the resistance is significantly reduced. The pressure is small where the angle of incoming water is large (small draft), and the angle is small where the incoming water pressure is strong. This ingenious design keeps the resistance at a low level.

[0011] When the ship's width b is twice its draft c, It is 4 times of c, and the angle between the tangent line of the fillet at the waterline and the horizontal line is 45 degrees. The larger the b / c, the smaller the angle between the tangent line of the fillet at the waterline and the horizontal line, and the smaller the vertical water resistance.

[0012] The main hull head with rounded corners when viewed from above: the head of the square main cabin section with a length of a, a width of b, and a depth of c plus a semicircle with a diameter of b, and then three equal circles with a diameter of b form the part of the pointed circle; the vertical surface is vertical. The height of the pointed circle is Fore bottom fillet: The center of the circle is on the vertical line of the center of the head tip circle, passing through the tip of the main deck and tangent to the bottom of the square main cabin section. The diameter of the circle of the fore bottom fillet is The head is pointed and round, the vertical surface is vertical, and the resistance in the left and right directions is minimal. The rounded corners at the bottom of the head are tangent to the bottom edge of the square, and the vertical resistance is minimal; as the draft increases, the pressure increases, but the angle between the tangent and the horizontal line decreases until it reaches zero, and the increase and decrease offset the water resistance significantly reduced; compared with the inclined plane with a fixed angle, the resistance is significantly reduced. The pressure is small where the angle of incoming water is large, and the angle is small where the incoming water pressure is strong. The rounded corners when viewed from the side keep the vertical resistance at a low level. The larger the b / c, the smaller the angle between the tangent of the rounded corner at the waterline and the horizontal line, and the smaller the vertical water resistance.

[0013] After adding a semicircle with a diameter of b to the stern, add three equal circles with a diameter of b (forming a sharp circle); the vertical plane is vertical. The tail is sharp and the vertical plane is vertical, with the smallest resistance in the left and right directions (zero degree transition to the left / right and back).

[0014] The bottom line of the tail bottom slope is the rear bottom edge of the square, and the top line is the line connecting the tangent points of equal circles on both sides of the deck surface.

[0015] The tail bottom slope can obtain more assisting force of fluid reflux impact than the rounded corner surface. The slope is not zero degree transition backward, which obviously makes it easier to obtain assisting force of fluid reflux impact.

[0016] The water sprayed backwards by the spray pump falls to the tail, increasing the water pressure at the tail and thus increasing the assist power.

[0017] The water trough is square, opening downward and backward, slightly larger than the diameter of the spray pump. The bottom edge of the water trough is not a square bottom edge, but moves backward and upward, forming an inclined surface at the bottom to obtain the auxiliary force of the fluid backflow impact.

[0018] The spray pump nozzle extends from the rear wall, so that the nozzle falls on the area with higher water pressure due to the return flow, thereby obtaining greater assisting power.

[0019] The top of the jet pump outlet is not lower than the draft line of the ship, and the jet pump outlet is partially exposed to the open air.

[0020] There is a fence at the water inlet of the spray pump to prevent garbage.

[0021] The tail of the main hull with a pointed circle and a side-view triangle and an inverted square trough: after adding a semicircle with a diameter of b to the tail of the square main cabin section with a length of a, a width of b, and a depth of c, three equal circles with a diameter of b are added to form a pointed circle; the vertical surface is vertical. The tail is pointed and round, and the vertical surface is vertical, with the smallest resistance in the left and right directions. The bottom line of the tail bottom slope of the side-view triangle is the rear bottom edge of the square, and the top line is the line connecting the tangent points of the equal circles on both sides of the deck surface. The tail bottom slope of the side-view triangle can obtain more assisting force from the fluid backflow impact than the round surface of the side-view rounded corner. The slope is not a zero-degree transition backward, which is obviously easier to obtain the assisting force from the fluid backflow impact. The water spray trough is square, opening downward and backward, and is slightly larger than the diameter of the spray pump. The bottom edge of the water spray trough is not the rear bottom edge of the square, but moves backward and upward, forming an inclined surface at the bottom to obtain the assisting force from the fluid backflow impact. The nozzle of the spray pump extends from the rear wall, so that the nozzle falls in the area with higher water pressure of the backflow impact, thereby obtaining greater assisting force. The top of the jet pump outlet is not lower than the draft line of the boat, and the jet pump outlet is partially exposed. The water sprayed backward by the jet pump falls to the tail, increasing the water pressure at the tail and thus increasing the power. There is a fence at the water inlet of the jet pump to prevent garbage.

[0022] The main compartment has a drain hole in the center of the square, and the water tanks on both sides are connected to the drain hole. The top opening of the drain hole is slightly higher than the waterline, which is convenient for the crew to observe the draft of the ship. This is the only drain hole, and the wastewater to be discharged from other places is led to the drain hole through pipes. The water tanks on both sides are partially exposed to the open air and connected with a top plate to increase the structural strength.

[0023] There is a fence at the top of the drain hole to prevent falling objects.

[0024] Water tumbler drain hole: a drain hole on the ship that can only drain but not enter, vertically passing through the center of gravity of the hull, with the top opening slightly higher than the waterline, making it convenient for the crew to observe the draft of the ship; there is a fence at the top to prevent falling objects; there are sloping bottom gutters on both sides, part of the gutters are exposed to the air and connected with a top plate to increase the structural strength; it is the only drain hole on the ship, and wastewater to be discharged from other places is led to the drain hole through pipes.

[0025] There are holes in the side wall to drain water, so water will enter if the swing amplitude is large, which makes the safety low.

[0026] The center of the rudder axis is the midpoint of the vertical line from the tail tip to the top line of the tail bottom slope. The rudder blade falls in the area with higher water pressure due to backflow impact, and the braking force obtained during braking is greater. The bottom line of the rudder blade is not lower than the bottom line of the square main cabin section; the width does not exceed the distance from the tail tip to the top line of the tail bottom slope.

[0027] Brake rudder: The rudder can rotate 360 ​​degrees. When it is 90 degrees to the forward direction, it does not provide steering force, and the rudder plate becomes a brake plate. The fluid backflow hits the plate, improving the braking effect. The center of the rudder axis is the midpoint of the vertical line segment from the tail tip to the top line of the tail bottom slope. The rudder plate falls in the area with higher water pressure when the backflow hits, and the braking force obtained during braking is greater. The bottom line of the rudder plate is not lower than the bottom line of the square main cabin section; the width does not exceed the distance from the tail tip to the top line of the tail bottom slope.

[0028] Axle holes and screw holes are opened on the main deck, and the upper and lower rudder bearing seats are fixed by bolts, ring washers and nuts. The rudder shaft passes through the lower rudder bearing seat, the main deck, the upper rudder bearing seat, and the rudder transmission wheel, and is clamped with the rudder shaft retaining spring. The rudder shaft and the rudder transmission wheel are fixed with keys, and then a cable hole is opened to penetrate the shaft and the wheel. The steering shaft seat is fixed to the bow with bolts, ring washers and nuts, and then the steering shaft is covered. The steering shaft and the steering transmission wheel are fixed with keys, and then a cable hole is opened to penetrate the shaft and the wheel. The steering cable goes around the rudder transmission wheel half a circle, passes through the rudder cable hole, goes around the rudder transmission wheel half a circle, goes to the steering cable hole, passes through the steering cable hole, goes around the steering transmission wheel once, and returns to the starting end, and the cable is connected from beginning to end.

[0029] Guangdong Ocean University simulation calculation report proof (see attached Fig.26 , 27 ): The tail tip round bottom slant can form a high pressure area at the tail; the square tail is a low pressure area. The tail tip round bottom slant can obtain fluid assist power. The rudder is located in the high pressure area, and the braking effect is significant.

[0030] The beneficial effects of the present invention are energy saving, safety and high speed. The main hull appearance has a unified drag reduction, energy saving and safety standard, and is no longer subject to the designer's will. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the main hull below the main deck of a double-pump chamber watercraft with small bow water resistance, stern water assist and a rudder with braking function.

[0032] Figure 2 It is a schematic diagram of the main hull below the main deck of a single-pump-chamber watercraft with small bow water resistance, stern water assist and a rudder with braking function.

[0033] Figure 3 This is a schematic diagram of the part below the freeboard line of the hull.

[0034] Figure 4 This is a schematic diagram of the double pump chambers below the freeboard line of the hull.

[0035] Figure 5 This is a schematic diagram of a sloping bottom sink.

[0036] Figure 6 It is a schematic diagram of a sloping bottom sink-top plate.

[0037] Figure 7 This is a schematic diagram of the lower rudder bearing seat.

[0038] Figure 8 It is a schematic diagram of the upper rudder bearing seat.

[0039] Fig. 9 This is a schematic diagram of the rudder seat bolts.

[0040] Fig.10 It is a schematic diagram of the helm seat ring pad.

[0041] Fig.11 This is a schematic diagram of the rudder seat nut.

[0042] Fig.12 This is a schematic diagram of the rudder.

[0043] Fig.13 This is a schematic diagram of the rudder shaft flat key.

[0044] Fig.14 This is a schematic diagram of the rudder transmission wheel.

[0045] Fig.15 This is a schematic diagram of the rudder shaft retaining spring.

[0046] Fig.16 This is a schematic diagram of the steering shaft seat bolt.

[0047] Fig.17 This is a schematic diagram of the steering axle seat.

[0048] Fig.18 This is a schematic diagram of the steering shaft seat ring pad.

[0049] Fig.19 This is a schematic diagram of the steering shaft seat nut.

[0050] Fig. 20 It is a schematic diagram of the steering transmission wheel.

[0051] Fig.21 This is a schematic diagram of the steering shaft.

[0052] Fig. 22 This is a schematic diagram of the steering shaft flat key.

[0053] Fig.23 This is a schematic diagram of the steering cable.

[0054] Fig.24 This is a schematic diagram of the drain outlet.

[0055] Fig.25 It is a schematic diagram of the water inlet.

[0056] Fig.26 This is the free liquid surface waveform diagram in the model calculation report of Guangdong Ocean University: the round tail tip and inclined bottom can form a high-pressure area at the tail.

[0057] Fig. 27This is the free surface waveform diagram of the Guangdong Ocean University model calculation report: the square tail is the low pressure area.

[0058] Fig.28 It is a schematic diagram of the dangerous buoyancy area that will be created when a V-shaped ship tilts.

[0059] Fig.29 It is a schematic diagram of the life-saving buoyancy zone generated only after the flat-bottomed boat is tilted.

[0060] Fig.30 This is a sign that the claim that a V-bottom boat has low resistance is a false proposition. Figure 1 .

[0061] Fig.31 This is a sign that the claim that a V-bottom ship has low resistance is a false proposition. Figure 2 .

[0062] Parts in the picture: 1: left pump chamber, 2: right pump chamber, 3: brake rudder, 4: single pump chamber, 5: drain hole, 6: rudder shaft hole, 7: nozzle, 8: left nozzle, 9: right nozzle, 10: inclined bottom water tank, 11: inclined bottom water tank top plate, 12: lower rudder bearing seat, 13: upper rudder bearing seat, 14: rudder seat bolt, 15: rudder seat ring pad, 16: rudder seat nut, 17: rudder, 18: rudder shaft flat key, 19: rudder transmission wheel, 20: rudder shaft retaining spring, 21: steering shaft seat bolt, 22: steering shaft seat, 23: steering shaft seat ring pad, 24: steering shaft seat nut, 25: steering transmission wheel, 26: steering shaft, 27: steering shaft flat key, 28: steering cable, 29: drain outlet fence, 30: water inlet fence.

[0063] The rudder transmission wheel and the steering transmission wheel are provided with cable holes penetrating the wheel and the shaft.

[0064] The steering shaft is connected to the steering handle or steering wheel, the servo, and the intelligent driving control system. Implementation

[0065] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] According to the attached drawings, first design and build a square main cabin section with a length of a, a width of b, and a depth of c, and lay out the main longitudinal keel, transverse keel, and water tumbler drain holes; then design and build the main hull bow with a sharp circle when viewed from above and rounded corners when viewed from the side, and the main hull stern with a sharp circle when viewed from above and a triangular inverted square groove when viewed from the side; finally, design, process, and install the brake rudder.

[0067] Those skilled in the art can understand that the modules or processes of the embodiments are not necessarily necessary to implement the present invention.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The main hull tail with a pointed round top view, a triangular side view and an inverted square groove is characterized by: After adding a semicircle with a diameter of b to the tail of the square main cabin section with a length of a, a width of b and a depth of c, the part surrounded by three equal circles with a diameter of b forms a pointed circle with vertical vertical surfaces; the tail is pointed and round, with vertical surfaces, and the resistance in the left and right directions is minimal; the bottom line of the tail bottom slope of the side-view triangle is the rear bottom edge of the square, and the top line is the line connecting the tangent points of the equal circles on both sides of the deck surface; the tail bottom slope of the side-view triangle can obtain more auxiliary force from the fluid backflow impact than the round surface with rounded corners in the side view; the slope is not zero-degree transition backward, which is obviously easier to obtain the assistance of fluid backflow impact Power: The water spray trough is square, opening downward and backward, and slightly larger than the diameter of the jet pump; the bottom edge of the water spray trough is not a square bottom edge, but moves backward and upward, forming an inclined surface at the bottom to obtain the auxiliary power of the fluid backflow impact; the jet pump nozzle extends from the rear wall, so that the nozzle falls on the area with higher water pressure of the backflow impact, thereby obtaining greater auxiliary power; the top vertex of the jet pump mouth is not lower than the draft line of the ship, and the jet pump mouth is partially exposed to the air; the water sprayed backward by the jet pump falls to the tail, increasing the water pressure at the tail and thus increasing the auxiliary power; there is a fence at the water inlet of the jet pump to prevent garbage.

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