FR2538340A1 - MOBILE SHUTTER COMPONENT FOR SHIP HULL PROVIDED WITH STABILIZING FINS - Google Patents

Abstract

The movable shutter for a ship's hull fitted with stabilizing fins in which a seawater box 1 placed at the edge of the hull 6 of the ship contains at its upper part a stabilizing fin 3 which is fitted with a device allowing the exit and the retraction of the hull by a rotation of at least 90 degrees is characterized in that the upper bulkhead of each water box 1 disposed along the hull near the waterline carries casings 12 regularly spaced and whose lower part maintains hollow semi-circular guides 11 in which can roll rollers 8, 9 integral with arched shutter-carrying arms 7 to the lower part of which are fixed movable shutters 5. (CF DRAWING IN BOPI)

Description

Many ships are equipped with stabilized

  anti-rollers which are placed on either side of the hull of the ship and are extended perpendicular to the longitudinal axis of the ship to ensure stabilization in the transverse direction, that is to say to fight against the

  However, in good weather, these fins are

  in the hull by describing a rotational movement of substantially 9, 0 and are placed within housings formed in the hull below the waterline but, as is quite understandable, the openings in the hull of the ship necessary for the passage of each fin cause a resistance to the advancement of the ship,

  hence an increase in energy consumption.

  Indeed, the water nets are disturbed-by these

  openings and the sliding of the hull is hurting.

  The present invention eliminates these drawbacks by creating a shutter shutter closing each opening of the shell allowing the exit of a fin to obtain a complete shell facilitating a perfect continuity of

nets of water.

  According to the invention, the movable shutter shutter for hull of ship equipped with stabilizing fins} in which a chest in sea water placed at the edge of the hull of the ship contains at its upper part a stabilizing fin which is provided with a device allowing the exit and the re-entry of the hull by a rotation of at least 900, is characterized in that the upper partition of each water box arranged along the hull, close to

  of the waterline, with regularly spaced housings

  and the lower part of which holds hollow semicircular guides in which can roll rollers solidarity arm arched bow to the part

  lower parts of which are movable shutters, the movement

  entry and exit of the hull of each flap being obtained from a control shaft bearing from distance the links connecting via a shaft, the sliding of the rollers in the semicircular guides is for back to school or for the release

  of the shutter and, moreover, the movement of rotation of

  900 of the main shaft is obtained from a hydraulic motor cylinder whose rod is connected by a

  articulation to a rod which is integral with the end

  of the shaft and finally this end of the control shaft carries a cam having two notches arranged at an angle of at least 90 to

  cooperate with the mobile armature of an electronic lock.

  magnetic placed just above the cam.

  According to another characteristic of the invention, the end of the control shaft passes through the wall of the trunk in sea water so that the engine cylinder, the connecting rod, the cam and the electromagnetic lock are placed at inside the hull of the ship without

contact with seawater.

  Various other features of the invention

  from the detailed description which follows.

  Embodiments of the subject of the invention are represented, by way of non-limiting examples, in

attached drawing.

  FIG 1 is a partial perspective view of

  control device shutter shutter.

  Fig 2 is an elevation on a smaller scale

  complete face of the shutter control device.

  FIG 3 is a plane corresponding to FIG 1.

  FIG. 4 is a section substantially according to the

line IV-IV of fig 3.

  FIG. 5 is a section showing a variant of

realization of fig 4.

  FIG. 6 is a partial section of the device

  control of the flap showing the flap in the retracted position.

  FIG. 7 is a partial side elevation of the shutter locking device in the position

  open and in the closed position.

  FIG. 8 shows in section an embodiment comprising

  two shutters shutters operating in synchronism for the closing and opening passage of the flap

in the hull.

  In FIG. 1, there is shown a trunk 1, said trunk 7 ea of sea, whose external partition 2 is in line with the hull of the ship and which contains interior-

  the lower part of the stabilizer fin.

  Moreover, when we look at FIG. 6, we see part of the aileron 3 schematized. The front face of the partition 2 is pierced with an opening 4 allowing the

  exit and re-entry of the stabilizer fin 3.

  This opening 4 is normally closed, when the fin 3 is retracted or extended, by a movable flap which, thus, avoids the eddies and therefore the discontinuities of the water streams along the hull of the ship, schematically hull especially in fig 6

  and referenced 6 thus limits energy consumption.

since the hull is complete.

  The movable flap 5 is secured to several arcuate flap-holder arms 7 which each have on their sides 20, 8, 9 axes on which are mounted rollers

crazy 10.

  The rollers 10 roll two by two in a guide

  semicircular hollow 11 which is fixed by its upper part

  on a holding casing 12 secured to the top of the trunk 1 In addition, the semicircular guide 11 carries, at its lower part, a support 13 holding a bearing 14 A control shaft 15 resting in the bearings 14 (see fig. 3) can rotate because one of its ends 15 has rests in the bearing 17 fixed on the edge of the vertical partition 1b of the seawater chest 1 Moreover, this rotation is caused by a double-acting engine cylinder 20 or by a hydraulic motor or by any other drive means which, by means of a hinge 21, drives a connecting rod 22 fixed on the

  outer portion 15b of the shaft 15, this outer portion

  15b of the tree being located within the

253 834 O

  out of water vessel The end 15b of the shaft 15 also carries between the bearing 17 and the connecting rod 22 a locking cam 23 having two notches 24, 25 arranged

  at 900 to one another.

  hydraulic or electrical control 26 allows the cam 23 to be locked by engaging the latch in the notch 24 when the flap 5 closes the outlet opening 4 of the stabilizer When the latch 26 is in the notch

  flap 5 is open (see figs 4 and 5).

  The control of the shutter 5 is obtained by drive levers 31 which are welded on the spacer shaft

  and connected by rods 32 to solid arms 33

  In general, the biel-

  bits 32 are telescopic rods containing a powerful spring banded which allows an extremely strong support so a veneer of the flap 5 in front

  the opening 4 even under the effect of the pressure of the water.

  The operation of the device is very simple since, when the ondésire bring out the fin-de

  stabilization, stream 5 is returned to the cof-

  in seawater 1 under the effect of the engine cylinder 20 which, by exiting its cylinder rod, pivots the connecting rod 22 by approximately 900 This movement is possible since before

  the power supply of the engine cylinder 20 the electromagnetic lock

  tick 26 is energized and calls its armature that releases the notch 24 of the cam 23 The shaft 15 rotates at least 900 and, as a result, the arms 33 also rotate by driving the rods 32 and the levers As a result, the shaft 30, by pivoting, brings the shutter arms 7 along the guides 11. The shutter 5 thus escapes inside the box 1 (see FIG. 4 is free and

  the stabilizer fin can come out.

  When the stabilizer fin has returned

  the hull, the engine cylinder 20 performs the maneuver

  poured, which brings the shutter 5 back to the opening

  4 of the hull of the ship (see fig 5).

  Of course, after each maneuver, the lock

  electromagnetic system 26 ceases to be powered and its armament

  The thread penetrates either into the notch 24 or into the notch 25 to lock the flap 5 either in the open position (see FIG. 4) or in the closed position (see FIG. 5). Moreover, a spring tends to make lower this

mobile frame.

  As mentioned above, the connecting rods

  scopiques 32 ensure a very strong application of the flap 5 in front of the opening 4 of the stabilizers and this arrangement, caused by an elastic member placed inside each rod 32, also allows

  quick and effortless unlocking of the electronic lock

  magnetic 26 before the maneuvers This construction

  rods 32 also provides a compensation for

  vibration caused by the ship's machinery and

also to the waves.

  The flap opening control 5 and the control of their closure are normally synchronized with the output and retraction of the fins 3, this movement being placed under the control of an electrical device of the mini-computer type to avoid all false maneuvers and also allowing the ship's command to instantly and permanently know the position of the ailerons 3 and flaps 5 closing the

shell 6.

  In FIG. 8, a section is shown in FIG.

  sation with shutters operating in synchronism one upwards and the other down to clear and close the passage of the fins of the hull As shown in the drawing, the hull 2 is

  pierced on each of its sides with an opening 4

  both the-output of the return of stabilizing flap S

  3 As in the previous figures, the function

  two movable half-shutters Sa, 5b is

  tick and that's why the control parts and

  these two half-sections bear the same

  However, when it is desired to open the hull for the exit of the fin 3, the movements are controlled in synchronism by a central control acting first on the actuating members of the flaps a, 5 b, then on the actuators

  each fin 3, the description of this set has

  This last embodiment, however, allows easier maneuvering of the openings and closures because the flaps 5a, 5b have a smaller surface area and therefore offer less

resistance to movement.

Claims (4)

  1 Mobile shutter for a ship's hull equipped with stabilizing fins in which a seawater trunk (1) placed at the edge of the hull (6) of the ship contains at its upper part a stabilizing fin (3) which is equipped with a device allowing exit and retraction of the hull by a rotation of at least 900, characterized in that the upper partition of each water box (1) disposed along the hull near the   water line carries casings (12) spaced regularly   and whose lower part holds hollow semicircular guides (11) in which rollers (8,9) integral with the arched door-flap arms (7) at the lower part of which movable flaps (5) are fixed are rollable. , the input and output movement of the hull of each flap (5) being obtained from a control shaft (15) bearing at a distance the links (33, 32, 31) ensuring, by the intermediate of a shaft (30), the sliding of the rollers (8,9) in the semicircular guides (11) is for the re-entry or for the exit of the flap (5) and, moreover, the rotational movement of substantially 90 of the main shaft (15) is obtained from a hydraulic motor cylinder (20) whose rod is connected by a hinge to a rod (22) integral with the end (15b) of the shaft (15) finally 1 this end (15b) of the control shaft (15) carries a cam (23) having two notches (2 4.25) arranged at an angle of at least 90 to cooperate with the movable armature of an electromagnetic lock (26) located just above the cam (23).   2 movable shutter shutter for ship's hull provided with stabilizing fins according to claim 1, characterized in that the end (15 a) of the control shaft (15) passes through the wall of the trunk in sea water ( 1) so that the motor lever (20)> the connecting rod (22), the cam (23) and the electromagnetic lock (26) are placed inside the hull (6) of the non-contact vessel with seawater - 2 38340   3 movable shutter shutter for ship's hull provided with stabilizing fins according to claim 1, characterized in that each link connecting the main shaft (15) to the shaft (30) is constituted by an arm (33), a connecting rod (32) and a drive lever (31) and in that the rod (32) is in the form of a telescopic member provided with a strong elastic element allowing a perfect application of the flap (5) in front of the opening (4) output of each fin (3).   4 Mobile shutter shutter for ship's hull   equipped with stabilizing fins according to one of the   dications 1 to 3, characterized in that there exists in front of each opening two shutters (5a, 5b) controlled in synchronism so as to disengage one upwards,   the other down the hull using each one of a   described in the preceding claims.