CN102923271B - Double-plate swirling rectification anti-drag stabilizer of speed boat - Google Patents

Abstract

The invention discloses a double-plate rotary rectifying drag reduction and anti-rolling device for a speedboat, which comprises two sets of driving mechanisms and two sets of executive mechanisms. On both sides of the stern of the planing boat, the actuator and the driving mechanism are embedded and connected. The driving mechanism includes a stepping motor, a sealing device, a driving shaft, an eccentric wheel and a driving slider, and the executing mechanism includes a base plate, a cover plate, a rectifying plate, several anti-warping pins and several end face sliders. The drive mechanism of the present invention drives the rectifying plate to rotate around the center of the mandrel arranged below it through the eccentric wheel and the driving slider, so that the lower edge of the rectifying plate protrudes from the bottom edge of the planing boat and cuts into the water, which can improve the damage caused by design or construction. The hydrodynamic performance defect of the planing boat bottom. According to the sea state or the actual condition of the planing boat, the present invention can select a suitable movement combination mode of the rectifying plate, so as to change the water flow field and the hydrodynamic pressure center of the boat bottom to achieve the purpose of reducing roll and drag.

Description

Double-plate rotary rectification drag reduction and anti-rolling device for speedboat

technical field

The invention relates to a drag reduction and anti-rolling device for a speedboat, in particular to a drag and anti-rolling device with two rotatable rectifying plates arranged at the stern of the boat, which belongs to the technical field of ship engineering.

Background technique

When speedboats (including displacement boats, transition boats, and planing boats) sail at high speed on the water surface, due to the action of wind, waves, and currents, the hull will sway significantly, which poses a threat to the safety of personnel, equipment, and boats. Especially for military boats, weapons cannot be used normally, so as to delay fighters. At present, there are many types of anti-rolling devices for ships. In summary, there are mainly the following anti-rolling methods: bilge keels, anti-rolling water tanks, and anti-rolling fins. Due to the particularity of the speedboat’s sailing state and the small displacement of the hull, except for the bilge keel, the above anti-rolling methods are basically only suitable for the anti-rolling of displacement surface ships, and are basically not applicable to speedboats. Due to the limitation of the material and line shape of the hull, it cannot be used; for the drag reduction of speedboats, it is mainly realized by installing a wedge plate on the bottom of the stern boat or installing a wave suppression plate behind the stern seal plate, because the wedge plate and the fixed The wave suppressor is designed for the design speed of the speedboat, so its resistance may not decrease but increase at other speed ranges of the speedboat. For the adjustable wave suppressor, it can adapt to a wider speed range of the speedboat, but it is still suitable for speedboats sailing at lower speeds. Will increase speedboat drag.

Chinese invention patent ZL 200810123918.X "Single-plate double-action rectification and anti-rolling device for speedboats" discloses a single-plate rectification and anti-rolling device for planing boats. Although this invention patent has good drag reduction, pitch reduction and It can reduce the roll, but the hull will yaw when the roll is reduced. At this time, it is necessary to properly press the rudder to maintain the course of the hull. When the amplitude roll is reduced, the water flow at the bottom of the speedboat has the phenomenon of "outside jetting", which will have an adverse effect on the speed and state of the speedboat. In complex sea conditions, the anti-rolling effect is not ideal, and at the same time, the envelope surface of the lower edge of the actuator does not coincide with the naturally extending surface of the bottom of the boat, so that the hull has different degrees of water flow in certain sailing states. The "rake water" phenomenon flowing in the direction of the bow of the boat increases the resistance of the speedboat to advance.

Contents of the invention

The object of the present invention is to provide a drag reduction and anti-rolling device which can effectively reduce the resistance and swing amplitude of a planing boat when sailing.

The present invention is achieved through the following technical solutions:

A double-plate rotary rectifying drag reduction and anti-rolling device for a speedboat, comprising two sets of driving mechanisms and two sets of actuators, the driving mechanisms are symmetrically arranged on both sides inside the stern of the speedboat, and the actuators are symmetrically arranged outside the stern of the speedboat On both sides, the actuator is connected with the drive mechanism; the drive mechanism includes a stepping motor, a drive shaft, an eccentric wheel, a drive slider and a pair of vertical slide rails, and the actuator includes a base plate, a cover plate, a rectifying plate, a core Shaft, mandrel bearings, several anti-warping pins, several pairs of end sliders, several pairs of smooth rails matched with the end sliders; the stepper motor is fixed in the stern seal and connected to the drive shaft through an elastic coupling. The driving shaft passes through the sealing device and the stern sealing plate, and the two ends of the driving shaft are respectively supported on the cover plate and the base plate through the front bearing and the rear bearing; the eccentric wheel is arranged in the driving slider and is fixedly connected with the driving shaft. And it is slidingly matched with the driving slider; the base plate is fixed outside the stern cover plate, the rectifying plate is arranged between the base plate and the cover plate, the lower openings of the cover plate and the base plate are open, and the lower side of the rectifying plate can protrude from the lower side There is a rectangular hole in the center of the upper part of the rectifying plate, a pair of vertical slide rails are fixed on both sides of the rectangular hole, the driving slider is arranged in the rectangular hole of the rectifying plate, and the driving slider and the vertical slide rail form a sliding friction pair; The mandrel passes through the mandrel bearing fixed in the center of the lower part of the rectifying plate, and the two ends of the mandrel are respectively fixed on the base plate and the cover plate, and the rectifying plate is hinged to the stern sealing plate through the mandrel; The arc-shaped grooves are centered on the center of the mandrel, and are distributed on both sides of the center line of the rectifying plate with different arc radii; several anti-warping pins pass through the corresponding arc-shaped grooves of the rectifying plate, and their two ends They are respectively fixed on the base plate and the cover plate; the end sliders are respectively fixed on both sides of the rectifying plate, the smooth rails are respectively fixed on the base plate and the cover plate, and the paired end sliders are respectively fixed on the base plate It forms a sliding friction pair with the smooth rail on the cover.

The purpose of the present invention can also be further achieved through the following technical measures.

The aforementioned speedboat double-plate rotating rectifying drag reduction and anti-rolling device, wherein the lower edge of the base plate and the cover plate coincides with the lower edge of the stern seal plate, the outer edge coincides with the outer edge of the stern seal plate, and the inner edge coincides with the stern seal plate. The center lines of the plates are coincident, and the enveloping curved surfaces of the lower edges of the base plate, rectifying plate and cover plate are coincident with the naturally extending curved surface of the bottom of the boat.

In the aforementioned speedboat double-plate rotating rectifying drag reduction and anti-rolling device, the shape of the driving slider is large in the middle and small at both ends. Both the drive slider and the end slider are oil-containing sliders.

The invention has the advantages of compact structure, low cost and easy maintenance; only a few parts are added to the stern of the speedboat, which solves the problem of a relatively large swing of the speedboat when the speedboat sails on the water surface, and also solves the problem of the speedboat in different sailing states and Drag reduction problem at speed. The driving mechanism of the present invention utilizes the stepping motor to receive the on-off signal of the stepping motor controller to drive the drive shaft to rotate, and drives the rectifying plate to rotate around the axis of the mandrel arranged below it through the eccentric wheel and the driving slider, so that the rectifying plate The lower edge protrudes from the bottom edge of the planing boat and cuts into the water, which improves the problem of hydrodynamic performance defects at the bottom of the planing boat caused by design or construction. According to the sea condition or the actual condition of the planing boat, the present invention can select a suitable movement combination mode of the rectifying plate, so as to change the water flow field and the hydrodynamic pressure center of the boat bottom to achieve the purpose of anti-rolling and drag reduction.

The invention, with advantages and characteristics, will be illustrated and explained by the following non-limiting description of preferred embodiments, given by way of example only with reference to the accompanying drawings.

Description of drawings

Fig. 1 is a schematic structural diagram of the present invention;

Fig. 2 is the A-direction view of Fig. 1, at this moment, the rectifying plate is in the working state of rectifying plate single-action right outer cutting water;

Fig. 3 is the B-B rotation sectional enlarged view of Fig. 2;

Fig. 4 is the C-C sectional enlarged view of Fig. 2;

Fig. 5 is a D-D rotation sectional enlarged view of Fig. 2;

Fig. 6 is an enlarged view of part E of Fig. 2;

Fig. 7 is a view from direction A of Fig. 1, at this time the rectifier is in the working state of synchronous right-cutting;

FIG. 8 is a view from the direction A of FIG. 1 , and the rectifying plate is in the working state of differential inward cutting of the rectifying plate at this time.

Detailed ways

The present invention will be further described below in conjunction with drawings and embodiments.

As shown in Figures 1 to 8, this embodiment includes two sets of driving mechanisms 1 and two sets of actuators 2, the driving mechanisms 1 are arranged symmetrically on both sides of the stern 3 of the speedboat, and the actuators 2 are arranged symmetrically outside the stern 3 of the speedboat On both sides, the actuator 1 is connected to the drive mechanism 2 . The driving mechanism 1 includes a stepping motor 11, a driving shaft 15, an eccentric wheel 17, a driving slider 18 and a pair of vertical slide rails 110, and the actuator 2 includes a base plate 22, a cover plate 24, a rectifying plate 23, a spindle bearing 25, Mandrel 26, several anti-warping pins 27, several pairs of vertical slide rails 211, several end surface sliders 27 and several pairs of smooth rails 28. The power source of the driving mechanism 1 is a stepper motor 11, and the stepper motor 11 is fixed on the inner side of the stern cover 21 by the base 12, and the sealing device 14 is installed on the inner side of the stern cover 21, and the stepper motor The shaft 11a is connected to one end of the drive shaft 15 through a crown gear coupling 13, and other types of elastic couplings can also be used. The other end of the drive shaft 15 passes through the sealing device 14 and the stern seal plate 21, and the two ends of the drive shaft 15 are respectively supported on the cover plate 24 and the base plate 22 through the front bearing 16 and the rear bearing 19. Supported on the front bearing 16 and the rear bearing 19 respectively, the front bearing 16 is installed on the base plate 22, and the rear bearing 19 is installed on the cover plate 24. Eccentric wheel 17 is fixedly connected with drive shaft 15 by flat key 17a, is positioned between front bearing 16 and rear bearing 19, and eccentric wheel 17 is arranged in the driving slider 18, and its outer circle and the inner hole clearance fit of driving slider 18. The shape of the driving slider 18 is large in the middle and small at both ends, which is convenient for the swing of the rectifying plate 23 . The vertical sliding rail 110 is fixed on the left and right sides of the inner hole 231 of the rectifying plate 23 , and the left and right sides of the driving slider 18 are in clearance fit with the vertical sliding rail 110 . The vertical slide rail 110 is in the shape of a long strip, made of manganese brass bearing material, and the driving slider 18 and the vertical slide rail 110 form a sliding friction pair. The base plate 22 is fixed outside the stern cover plate 21, and the rectifying plate 23 is arranged between the base plate 22 and the cover plate 24. The lower side opening 220 of the cover plate 24 and the base plate 22 is open, and the lower side of the rectifying plate 23 can be stretched out. Side port 210.

The mandrel 26 passes through the mandrel bearing 25 fixed on the bottom center of the rectifying plate 23, and its two ends are respectively fixed on the base plate 22 and the cover plate 24, and the rectifying plate 23 is hinged with the stern seal plate 21 through the mandrel 26. The rectifying plate 23 is provided with 6 arc-shaped grooves 232 with the longitudinal centerline of the rectifying plate 23 as the axis of symmetry, and three arc-shaped grooves 232 are arranged on both sides of the longitudinal centerline. The arc-shaped slots 232 are centered on the center of the mandrel 26 and distributed on both sides of the center line of the rectifying plate 23 with different arc radii of R1 and R2. The six anti-warping pins 29 respectively pass through the corresponding arc-shaped slots 232 of the rectifying plate 23 , and their two ends are respectively fixed on the base plate 22 and the cover plate 24 . The end surface sliders 27 are respectively fixed on both sides of the rectifying plate 23, the smooth rails 28 are respectively fixed on the base plate 22 and the cover plate 24, and the paired end surface sliders 27 and the smooth rails are respectively fixed on the base plate 22 and the cover plate 24 28 form a sliding friction pair.

The drive slider 18 and the end slider 27 are all made of oil-impregnated bearing materials, and the smooth rail 28 is made of seawater corrosion-resistant stainless steel, which is correspondingly arranged on the base plate 22 and the cover plate 24, and the smooth rail 28 is axially limited to the rectifier plate 23. Several pairs of end surface sliders 27 respectively form sliding friction pairs with several pairs of smooth rails 28 correspondingly arranged on the base plate 22 and the cover plate 24 . The outer side of the lower edge of the rectifying plate 23 is appropriately chamfered upwards, and the length of the chamfer is about one-tenth of the length of the lower edge, so as to overcome the "side spray" phenomenon.

The lower edge of the base plate 22 and the cover plate 24 coincides with the lower edge of the stern cover plate 21, the outer edge coincides with the outer edge of the stern cover plate 21, the inner edge coincides with the center line of the stern cover plate 21, the base plate 22, The enveloping curved surface of the shape of the lower edge of the rectifying plate 23 and the cover plate 24 coincides with the naturally extending curved surface of the bottom of the boat. Both the drive slider 18 and the end slider 27 are maintenance-free oil-impregnated sliders.

The motion combination mode of the present invention is as follows.

The driving mechanism 1 of the present invention utilizes the stepping motor 11 to receive the on-off signal of the stepping motor controller to drive the drive shaft 15 to rotate, and drives the rectifying plate 23 to rotate around the center of the lower part of the rectifying plate 23 through the eccentric wheel 17 and the driving slider 18. Mandrel 26 axle centers rotate, make rectifying plate 23 lower edges unscrew the bottom edge of planing boat and cut into the water.

Looking from the stern to the bow: the rectifying plate 23 arranged on the port side rotates counterclockwise around the mandrel 26, and the rectifying plate 23 arranged on the starboard side rotates clockwise around the mandrel 26, which is called circumscribed, otherwise called inscribed; The rectifying plate 23 arranged on the port side rotates counterclockwise around the mandrel 26, while the rectifying plate 23 arranged on the starboard side rotates clockwise around the mandrel 26, which is called double circumscribed, otherwise it is called double inscribed; when the rectifying plate 23 arranged on the port side The plate 23 rotates clockwise around the mandrel 26, and the rectifying plate 23 arranged on the starboard side also rotates clockwise around the mandrel 26. Water cutting movements with different values are called differential cutting. The rotation angle (±θ) of the rectifying plate 23 is called the water cutting angle. When the rectifying plate 23 rotates clockwise, the water cutting angle θ is positive, otherwise θ is negative. According to the different combined drive modes of the two sets of drive mechanisms 1, the rectifying plate 23 can produce the following motion combination modes:

One, a rectifier plate 23 rotation movement:

1. The working state of the port side rectifying plate 23 with circumscribed cutting water—left circumscribed.

2. The port side rectifying plate 23 cuts inwards and cuts water working state - left inwards.

3. The starboard rectifying plate 23 circumscribed water cutting working state - right circumscribed.

4. Working status of starboard rectifier cutting water inwardly - right inwardly.

2. The rotation movement with the same absolute value of the rotation angles of the two rectifying plates 23:

5. The working state of the double rectification plate 23 circumscribed water cutting - double circumscribed.

6. Double rectifying plate 23 inner cutting water working state - double inner cutting.

7. The working state of the double rectifying plate 23 left forward cutting water - left forward cutting.

8. Double rectifying plate 23 is in the working state of cutting water in the right direction - cutting in the right direction.

3. Rotation motion with different absolute values of the rotation angles of the two rectifying plates 23:

9. The water cutting angle of the rectifying plate 23 on the port side is greater than that of the water cutting angle of the rectifying plate 23 on the starboard side.

10. Double circumscribed working state in which the water cut angle of the starboard rectifying plate 23 is greater than that of the port rectifying plate 23—right differential circumscribed.

11. The water cut angle of the port rectifier 23 is greater than that of the starboard rectifier 23 in the double inscribed working state—left differential inscribed

12. The double inscribed working state in which the water cut angle of the starboard rectifying plate 23 is greater than that of the port rectifying plate 23—right differential inscribed.

13. The left forward cutting working state in which the water cutting angle of the port rectifying plate 23 is greater than that of the starboard rectifying plate 23—left difference and left forward cutting.

14. The starboard straightening plate cut water angle is greater than the port straightening plate cut water angle in the right forward cut working state - right differential right forward cut.

15. The port side straightening plate 23 cuts the water angle smaller than the starboard side straightening plate 23 water cutting angle of the left side cut

Operating status - right difference left cut.

16. The starboard rectifying plate 23 cut water angle is smaller than the port rectifying plate 23 cut water angle to starboard cut

Operating status - left difference and right cut.

As shown in Figure 2, the rectifying plate 23 is in the single right outer forward cut working state. At this time, the stepper motor 11 of the drive mechanism 1 on the port side is in the 0 working position, and the stepper motor 11 of the drive mechanism 1 on the starboard side rotates counterclockwise. At this time, drive the rectifying plate 23 to rotate clockwise around the mandrel 26. At this time, the right lower edge of the rectifying plate 23 turns out of the bottom edge of the planing boat and cuts into the water at an angle θ, thereby changing the water flow field, hydrodynamic pressure and pressure center of the boat bottom. achieve the purpose of anti-rolling.

As shown in FIG. 7 , the rectifying plate 23 is in a synchronous right-cut working state, and starts to work with the initial phase of the stepping motors 11 of the two driving mechanisms 1 being 0°. At this time, the two driving mechanisms 1 are driven synchronously and in the same direction, that is, the rotation angle and direction of rotation of the two stepping motors 11 are the same. When the line rotates counterclockwise, the driving slider 18 is driven by the eccentric wheel 17 and is properly restricted by the vertical rectangular hole 231 of the rectifying plate 23. The central axis of the wheel 17 rotates counterclockwise, and at the same time drives the rectifying plate 23 to rotate clockwise around its respective mandrel 26. At this time, the right lower edge of the rectifying plate 23 turns out of the bottom edge of the planing boat and cuts into the water at an angle θ, thereby changing The bottom water flow field, hydrodynamic pressure and pressure center achieve the purpose of reducing drag, reducing pitch and main rolling.

As shown in Figure 8, the rectifying plate 23 is in the working state of the left differential cut in. At this time, the stepper motor 11 of the drive mechanism 1 on the port side drives the rectifying plate 23 on the port side to rotate clockwise around the mandrel 26 on the port side, and the rotation angle is θ1; the stepping motor 11 of the drive mechanism 1 on the starboard side drives the rectifying plate 23 on the starboard side to rotate counterclockwise around the mandrel 26 on the starboard side, and the rotation angle is -θ2, and the absolute value of θ1 is greater than the absolute value of -θ2; The lower edge of the plate 23 rotates out of the bottom edge of the planing boat at angles of θ1 and -θ2 and cuts into the water, thereby changing the water flow field at the bottom of the boat, the hydrodynamic pressure and the pressure center to achieve drag reduction, pitch reduction and amplitude roll reduction. Purpose.

In addition to the above-mentioned embodiments, the present invention can also have other implementations, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.

Claims (1)

1. A double-plate rotary rectifying drag reduction and anti-rolling device for a speedboat, comprising two sets of drive mechanisms and two sets of executive mechanisms, said drive mechanism comprising a stepping motor, a drive shaft, an eccentric wheel, a drive slider and a pair of vertical slides rail, the actuator includes a base plate, a cover plate, a rectifying plate, a mandrel, a mandrel bearing, several anti-warping pins, several pairs of end sliders, and several pairs of smooth rails matched with the end sliders; the stepping motor is fixed In the stern cover, it is connected to the drive shaft through an elastic coupling, the drive shaft passes through the sealing device and the stern cover, and the two ends of the drive shaft are respectively supported on the cover plate and the base plate through the front bearing and the rear bearing; The eccentric wheel is arranged in the driving slider, is fixedly connected with the driving shaft, and is slidably matched with the driving slider; the base plate is fixed outside the stern sealing plate, the rectifying plate is arranged between the base plate and the cover plate, and the cover plate and the cover plate The lower side opening of the base plate is open, and the lower side of the rectifying plate can protrude from the lower side opening; there is a rectangular hole in the center of the upper part of the rectifying plate, a pair of vertical slide rails are fixed on both sides of the rectangular hole, and the driving slider is arranged on the rectifying plate In the rectangular hole, the driving slider and the vertical slide rail form a sliding friction pair; the mandrel passes through the mandrel bearing fixed in the center of the lower part of the rectifying plate, and the two ends of the mandrel are respectively fixed on the base plate and the cover plate, and the rectifying plate passes through the center The shaft is hinged to the stern plate; there are several arc-shaped grooves on the rectifying plate, and the arc-shaped grooves are centered on the center of the mandrel and distributed on both sides of the center line of the rectifying plate with different arc radii; The anti-warping pins respectively pass through the corresponding arc-shaped grooves of the rectifying plate, and their two ends are respectively fixed on the base plate and the cover plate; the end sliders are respectively fixed on both sides of the rectifying plate, and the smooth rails are respectively fixed on the base plate and the cover plate, the paired end face sliders and the smooth rails respectively fixed on the base plate and the cover plate form a sliding friction pair; it is characterized in that the driving mechanism is symmetrically arranged on both sides of the stern of the speedboat, and the actuator Symmetrically arranged on both sides of the stern of the speedboat, the actuator is connected to the driving mechanism; the lower edge of the base plate and the cover plate coincides with the lower edge of the stern cover plate, the outer edge coincides with the outer edge of the stern cover plate, and the inner edge Coincident with the center line of the stern cover plate, the enveloped surface of the lower edge of the base plate, rectifying plate and cover plate coincides with the naturally extending curved surface of the bottom of the boat.