JP2009241706A - Life boat launching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a life boat launching device capable of avoiding the interference of the life boat with a davit arm during launching work or lifting work of the life boat. <P>SOLUTION: A support column 13 is vertically provided on the upper surface of a support plate 12, and a pair of right and left sliding ramps 14 is installed on the upper end part of the support column 13. A guide roller 15 is mounted to the both ramps 14 to compose a sliding base 11. The life boat 16 is movably supported by the guide roller 15 obliquely downward, and the life boat 16 is held by a locking mechanism at a predetermined position. The davit arms 22, 23 are tiltably supported on the both ramps 14 in the fore and aft direction through a hinge mechanism 21. Support arms 25, 26 are mounted to the upper part of the ramp 14 and an arm derricking mechanism K1 having a derricking winch 28 between the support arms 25, 26 and the davit arms 22, 23. A hoisting mechanism K2 for hoisting the life boat 16 is mounted to the davit arms 22, 23. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lifeboat launching device for evacuating (leaving) a crew member in the event of a marine accident of a ship.

  Conventionally, a large-sized ship is equipped with a lifeboat launching device so that crew members can escape from the ship in the event of a marine accident. As the lifeboat launching device, a moving pulley that is moved up and down by a hoisting winch is respectively hooked on the tip of a pair of suspension arms, and the lifeboat is suspended by a locking hook provided on the moving pulley. A type of rewinding the wire from the hoisting drum of the hoisting winch and launching the lifeboat to the sea surface has been used. In the lifeboat launching device using the winch, there is a problem that the time required for the occupant to escape is increased because the time required for the occupant to actually evacuate from the ship is increased.

  In order to solve the above problem, a lifeboat is conventionally mounted on a sliding ramp in an inclined state, and in the event of a maritime accident, the locking mechanism of the sliding ramp and the lifeboat is released and the lifeboat is disconnected. A lifeboat launching device has been proposed in which a lifeboat is caused to slide obliquely downward by its own weight, and the lifeboat is quickly moved from the ship to the sea. This lifeboat launching device will be described with reference to FIGS. 11 and 12.

  As shown in FIG. 11, a lifeboat 16 is mounted in an inclined state on a sliding lamp 14 mounted on the rear of the ship. A pair of left and right davit arms 22 and 23 are attached to a lower end portion of the sliding lamp 14 by a hinge mechanism 21 so as to be reciprocally tiltable in the front-rear direction, and the davit is interposed between the sliding lamp 14 and the davit arms 22 and 23. An arm hoisting mechanism K1 for tilting the arms 22 and 23 is mounted. The base end portion of the tilt cylinder 71 constituting the arm hoisting mechanism K1 is rotatably connected to the upper surface of the sliding lamp 14 by a connecting pin 72, and the tip end portion of the piston rod 73 of the tilt cylinder 71 is connected to the davit. The arms 22 and 23 are rotatably connected by connecting pins 74. The davit arms 22 and 23 are equipped with an elevating mechanism K2 for the lifeboat 16 for lowering the lifeboat 16 to the sea surface or lifting it from the sea surface. The elevating mechanism K2 includes a hoisting winch 42 attached to the lower end portion of the davit arm 22, a wire connected to the hoisting drum of the hoisting winch 42, and a pulley on which the wire is hung. ing.

  11 showing the retracted state of the lifeboat 16, the tilt cylinder 71 is operated to project the piston rod 73, and the davit arms 22 and 23 are rotated counterclockwise around the hinge mechanism 21. When moved, the davit arms 22 and 23 are switched to an inclined state toward the sea surface as shown in FIG. In this state, the hoisting winch 42 is operated, the wire is rewound from the hoisting drum of the winch, and the lifeboat 16 is lowered and launched to the sea surface.

Patent Document 1 discloses a mechanism for raising and lowering a davit arm with a cylinder.
JP 61-163084 A

  However, the conventional lifeboat launching device has the following problems because the arm hoisting mechanism K1 for tilting the davit arms 22 and 23 is constituted by the tilt cylinder 71. That is, in the process in which the lifeboat 16 shown in FIG. 11 is moved from the retracted state to a position corresponding to the sea surface as shown in FIG. The lifeboat 16 passes between the pair of left and right davit arms 22 and 23. Therefore, the lifeboat 16 is launched and the lifeboat 16 is lifted from the sea surface while avoiding the collision between the lifeboat 16 and the davit arms 22 and 23 due to the shaking of the ship or the lifeboat 16. Is required. Therefore, there is a problem that launching and lifting of the lifeboat 16 is very difficult.

  Further, since the tilt cylinder 71 is used as the mechanism for tilting the davit arms 22 and 23, it is necessary to equip a dedicated hydraulic unit and piping that are forced to be hydraulically driven and can be activated by an emergency power source of the ship. However, there are problems that the number of parts increases, repair and maintenance work is troublesome, and it is difficult to reduce running costs.

  Further, since the tilt cylinder 71 is operated by operating a hydraulic operation valve provided at a predetermined position below the sliding lamp 14, there is a problem in that it is not portable and the operability is poor. was there.

  In addition, since the conventional lifeboat launching device uses the tilt cylinder 71, not only does the oil leakage from the tilt cylinder 71 cause a problem of marine pollution, but also the lower ends of the davit arms 22 and 23. Since the portion is located on the sea side of the ship, seawater droplets are likely to adhere to the hoisting winch 42 and the tilt cylinder 71 during navigation of the ship, and the seam is placed in a significantly corrosive environment. There is a problem that the durability of the tilt cylinder 71 is lowered.

  The present invention solves the above-mentioned problems in the prior art and can avoid the interference between the lifeboat and the davit arm during the launching or lifting operation of the lifeboat, and improves operability. The number of parts of the arm raising / lowering mechanism of the davit arm can be reduced, repair and maintenance work can be easily performed, running costs can be reduced, and the durability of the arm raising / lowering mechanism and the lifting mechanism of the lifeboat can be reduced. It is to provide a lifeboat launching device that can improve the performance.

  In order to solve the above problems, the invention described in claim 1 is a pair of left and right via a hinge mechanism at a middle height position of a sliding lamp that can guide a lifeboat obliquely downward and freely fall. A lower arm of the davit arm is mounted so as to be capable of reciprocating in the front-rear direction, and an arm hoisting having a hoisting winch for reciprocally tilting the davit arm in the front-rear direction between the upper part of the sliding ramp and the davit arms The gist is that a mechanism is mounted, and a lifting mechanism equipped with a hoisting winch for moving the lifeboat up and down with the arms tilted forward is mounted on both davit arms.

  According to a second aspect of the present invention, in the first aspect, the davit arm is supported in a vertical state so that the davit arm is always oriented in the vertical direction. In the vertical state of the davit arm, a tilting force is applied to the davit arm. The gist is that the tilting force is applied by the mechanism.

  According to a third aspect of the present invention, in the first or second aspect, the undulation winch is provided with two undulation drums connected in series, and one end of a wire is connected to each of the undulation drums. The middle part of the wire is hung on a pulley provided on the davit arm, the other end of the wire is connected to the sliding lamp side, and the hoisting winch has two hoisting drums connected in series. One end of each wire is connected to each of the hoisting drums, and the middle part of both wires is mounted on a fixed pulley and a moving pulley provided on the davit arm, and the other end of both wires is the davit arm. The gist is that they are connected to each other.

  According to a fourth aspect of the present invention, in the third aspect, support arms are respectively attached to the left and right sides of the upper end of the sliding ramp, and the undulating winch is attached to both the support arms, The gist is that the wire is hooked on a plurality of pulleys mounted on the support arm and davit arm, and the other ends of both wires are respectively connected to predetermined positions of the support arm.

  The invention according to claim 5 is the case according to any one of claims 2 to 4, wherein the tilting force applying mechanism is fixed to a predetermined position on the sliding lamp side and supported so as to be directed forward. And a tilting force imparting rod housed inside the case, and a biasing member housed inside the case and biasing the tilting force imparting rod forward.

  According to the present invention, since the hoisting winch is used as the arm hoisting mechanism that tilts the davit arm, the position of the hinge mechanism that connects the davit arm to the sliding ramp can be set on the upper side of the sliding ramp. For this reason, only the rear part of the lifeboat supported by the raising / lowering mechanism provided in the davit arm is arranged between the two davit arms in the vertical state. For this reason, it is possible to reduce the interference between the lifeboat and the davit arm when the davit arm is tilted forward or raised while the lifeboat is being launched or lifted. Moreover, since the hoisting winch is operated by electric power, the restriction on the installation location of the operation switch is eased, and the operability of the hoisting winch can be improved. Furthermore, the number of parts of the arm raising / lowering mechanism of the davit arm can be reduced, repair and maintenance inspection work can be easily performed, and the running cost can be reduced. In addition, the arm hoisting mechanism and the lifeboat lifting mechanism can be arranged on the upper side of the sliding ramp, that is, from the outer side of the ship to the inner side, making it difficult for seawater droplets to adhere to both mechanisms and improving durability. Can do.

Hereinafter, an embodiment of a lifeboat launching device embodying the present invention will be described with reference to FIGS.
As shown in FIG. 3, the planing board 11 of the lifeboat launching device includes a rectangular support plate 12 attached to a predetermined position at the rear of the ship, and four standing plates provided at four corners of the support plate 12. A pair of sliding lamps 14 bridged in an inclined state between the upper ends of a pair of pillars 13 having different heights before and after being positioned on the left and right of each of the pillars 13, and mounted on both sliding lamps 14 And a large number of guide rollers 15. A lifeboat 16 is mounted between the sliding lamps 14 so that the guide roller 15 can slide downward. On the left and right side surfaces of the lifeboat 16, a strip-like planing plate 16a supported by the guide roller 15 is formed.

  As shown in FIG. 2, connecting frames 18 and 19 are bridged between the middle part and the upper end part of both sliding lamps 14, and the lifesaving unit is connected between the connecting frame 19 and the tail part of the lifeboat 16. A lock mechanism 20 for locking the boat 16 in the retracted position is provided. At the rear end of the lifeboat 16, although not shown, a lock pin constituting the lock mechanism 20 and a hydraulic cylinder for switching the lock pin between a lock position and an unlock position are provided. Then, when the occupant in the lifeboat 16 operates the hydraulic cylinder, the lock pin is pulled away from a lock hole of a lock plate (not shown) on the connection frame 19 side, and the lifeboat 16 is unlocked from the sliding lamp 14. The lifeboat 16 falls down obliquely downward along the sliding ramp 14 due to its own weight.

  At the intermediate height position of the sliding lamp 14, lower end portions of a pair of left and right davit arms 22, 23 are mounted via a hinge mechanism 21 so as to be capable of reciprocating in the front-rear direction, and between the upper end portions of the davit arms 22, 23. The connecting frame 24 is bridged, and the davit arms 22 and 23 are rotated synchronously. The arm hoisting mechanism K1 that reciprocally tilts the davit arms 22 and 23 in the front-rear direction will be described below. As shown in FIG. 1, a pair of left and right support arms 25, 26 having an inverted V shape when viewed from the side are erected at the upper ends of the sliding lamps 14. As shown in FIGS. 2 and 3, a connecting frame 27 is bridged between the parts. As shown in FIG. 3, a undulation winch 28 is attached to one of the support arms 26 located on the right side, and first and second undulation drums 29 and 30 connected in series to the rotation shaft of the undulation winch 28. As shown in FIG. 4, one ends of the first and second wires 31 and 32 are connected to each other. As shown in FIGS. 1 to 4, the intermediate portion of the first wire 31 includes a first pulley 33 attached to an upper end portion of the support arm 26, a second pulley 34 attached to the davit arm 23, It is hung on a third pulley 35 attached to the upper end of the support arm 26 and a fourth pulley 36 attached to the davit arm 23. The other end of the first wire 31 is connected to a first fixture 37 provided on the support arm 26 via a turnbuckle that can be adjusted in length. On the other hand, the intermediate portion of the second wire 32 is hooked on the relay pulley 38 attached to the connection frame 27 and the relay pulley 39 attached to the upper end of the support arm 25, and then the first wire described above. To the first pulley 33 ', the second pulley 34', the third pulley 35 ', and the fourth pulley 36', which are the same as the fourth pulleys 33 to 36. The other end of the second wire 32 is connected to a second fixture 37 ′ similar to the first fixture 37 provided on the support arm 25 via a turnbuckle whose length is not shown.

  Accordingly, when the first and second hoisting drums 29 and 30 of the hoisting winch 28 are rotated in the clockwise direction or the counterclockwise direction in FIG. 4, the first and second wires 31 and 32 are rewound. The davit arms 22 and 23 are tilted forward or raised rearward about the hinge mechanism 21 as a result of being pushed or rolled up.

  Next, the lifting mechanism K2 of the lifeboat 16 that can launch the lifeboat 16 to the sea surface or lift the lifeboat 16 from the sea surface in a state where the lifeboat 16 is suspended will be described.

  As shown in FIG. 3, a hoisting winch 42 is mounted at an intermediate height position of the davit arm 23 via a mounting plate 41. The winding drums 43 and 44 are connected in series. As shown in FIG. 5, one ends of a first wire 45 and a second wire 46 are connected to the hoisting drums 43 and 44, respectively. As shown in FIG. 2, the intermediate portion of the first wire 45 includes a first pulley 47 attached to the upper end portion of the davit arm 23, a second pulley 48 attached to the end portion of the connecting frame 24, and the davit arm 23. Are sequentially attached to a third pulley 49 and a fourth pulley 50 attached to the upper end of the first pulley. As shown in FIGS. 3 and 5, the first wire 45 drawn downward from the fourth pulley 50 is hooked with a fifth pulley 52 as a movable pulley having a locking hook 51 and capable of moving up and down. It is disguised. Further, the first wire 45 is a length (not shown) with respect to the first fixture 55 formed on the connection frame 24 after being hooked on the sixth pulley 53 and the seventh pulley 54 attached to the connection frame 24. It is connected via an adjustable turnbuckle.

  On the other hand, the intermediate portion of the second wire 46 has first to seventh pulleys 48 ', 49', 50 'similar to the first to seventh pulleys 47, 48, 49, 50, 52, 53, 54 described above. , 52 ′, 53 ′, 54 ′ and a second fixing device 55 ′ similar to the first fixing device 55 provided on the connecting frame 24 via a turnbuckle capable of adjusting the length (not shown). Are connected.

  Accordingly, when the hoisting winch 42 is operated and the hoisting drums 43 and 44 are rotated in the clockwise direction in FIG. 5, the first and second wires 45 and 46 are taken up by the hoisting drum. The wires 45 and 46 are fed out after being unwound from 43 and 44. For this reason, the fifth pulleys 52 and 52 'are moved downward, the lifeboat 16 hooked on the hooks 51 and 51' via wires is moved downward, and the lifeboat 16 is launched to the sea surface. Is done. On the contrary, when the first and second winding drums 43 and 44 are rotated in the counterclockwise direction, the first and second wires 45 and 46 are wound around the winding drums 43 and 44, respectively. The fifth pulleys 52 and 52 'are moved upward, and the lifeboat 16 is lifted from the sea surface.

  Next, as shown in FIG. 1, with the davit arms 22 and 23 standing vertically in the vertical direction, the davit arms 22 and 23 are positioned at predetermined positions, and the davit arms 22 and 23 are A tilting force applying mechanism 61 for applying a tilting force at the initial stage of the tilting operation will be described. The tilting force applying mechanism 61 is mounted in the horizontal direction with respect to the outer surface from the lower ends of the support arms 25 and 26. As shown in FIG. 6A, the tilting force applying mechanism 61 includes a horizontal cylindrical case 62 fixed to the support arms 25 and 26, a tilting force applying rod 63 inserted into the case 62, A locking ring 64 fitted and fixed to the outer peripheral surface of the tilting force applying rod 63 and a coil spring 65 as a biasing member interposed between the locking ring 64 and the bottom surface of the case 62 are configured. ing. When the davit arms 22 and 23 are in the upright state as shown in FIG. 1, as shown in FIG. 6A, the tilting force applying rod 63 of the tilting force applying mechanism 61 is moved by the davit arms 22 and 23. The coil spring 65 is moved in a direction to be immersed in the case 62 against the elastic force of the coil spring 65. When the davit arms 22 and 23 are moved upright by the hoisting winch 28 and the first and second wires 31 and 32 of the arm hoisting mechanism K1, the coil spring 65 of the tilting force applying mechanism 61 is stored. By the force, the tilting force applying rod 63 presses the rear surfaces of the davit arms 22 and 23 forward so that the standing davit arms 22 and 23 are smoothly tilted forward.

  As shown in FIG. 1, in the vicinity of the hinge mechanism 21, the davit arms 22, 23 are moved by the hoisting winch 28 from the inclined state to the upright state in the final stroke. A position sensor 66 for detecting the standing state is attached. When the position sensor 66 detects that the davit arms 22 and 23 are upright, the hoisting winch 28 is stopped.

Next, the operation of the lifeboat launching device configured as described above will be described.
1 and 3, the davit arms 22 and 23 are held in an upright (vertical) state by the arm raising / lowering mechanism K1, and the tilting force applying rod 63 of the tilting force applying mechanism 61 shown in FIG. The davit arms 22 and 23 are pushed forward. In addition, the lifeboat 16 is not connected to the locking hook 51 of the fifth pulley 52 as shown by the solid line in FIG. In this state, when the ship encounters a marine accident, the occupant evacuates inside the lifeboat 16, and a hydraulic cylinder (not shown) of the lock mechanism 20 is operated and locked by the occupant inside the lifeboat 16. The pin is released from the lock hole of the lock plate, and the locked state is released. As a result, as shown in FIG. 7, the lifeboat 16 is guided by the guide roller 15 mounted on the sliding ramp 14, moved diagonally forward and downward, and launched to the sea surface.

Next, a method for performing the lifting work of the lifeboat 16 dropped on the sea surface will be described.
As shown in FIG. 7, in the state where the lifeboat 16 does not exist on the slide 11, the hoisting winch 28 of the arm hoisting mechanism K1 is operated, and the first and second hoisting drums 29, 30 shown in FIG. When rotated in the turning direction, the first and second wires 31, 32 are unwound from the first and second hoisting drums 29, 30, and the first and second wires 31, 32 are fed out. 7, the davit arms 22 and 23 are switched from the standing state to the tilted state inclined forward as shown in FIG. 8. In this state, the hoisting winch 42 of the elevating mechanism K2 is actuated to rotate the hoisting drums 43 and 44 shown in FIG. By rewinding the second wires 45 and 46, the fifth pulleys 52 and 52 'and the locking hooks 51 and 51' are lowered. Then, the hooks 51 and 51 ′ are connected to the lifeboat 16 at sea via wires, and the lifeboat 16 is connected to the first and second wires 45 and 46. In this state, the hoisting winch 42 of the arm hoisting mechanism K1 is actuated again, and the first and second hoisting drums 43 and 44 shown in FIG. 5 are rotated counterclockwise, and the lifeboat 16 is moved to FIG. As shown in Fig.

  After the lifeboat 16 is pulled up to a predetermined height, the operation of the elevating mechanism K2 is stopped, and then the hoisting winch 28 of the arm hoisting mechanism K1 is operated so that the davit arms 22, 23 are centered on the hinge mechanism 21. Then, the hoisting winch 28 is stopped in a state where the davit arms 22 and 23 are slightly inclined forward from the vertical line H as shown in FIG. In this state, since the sliding board 16a of the lifeboat 16 is separated from the guide roller 15 on the sliding ramp 14 side, the hoisting winch 42 is operated to rewind the first and second wires 45 and 46. Then, the lifeboat 16 is lowered, and the lifeboat 16 is supported by the sliding ramp 14.

  Next, in FIG. 9, the hoisting winch 28 is operated to return the davit arms 22 and 23 to the standing position corresponding to the vertical line H, and then the hoisting winch 42 is operated to It moves obliquely upward along the guide roller 15 of the sliding ramp 14 and moves the lifeboat 16 to a predetermined (retracted) position of the sliding ramp 14 of the slide 11. Then, the occupant in the lifeboat 16 operates the lock mechanism 20 to lock the lifeboat 16 at a predetermined position on the slide 11 and fixes the lifeboat 16. Next, the coupling state of the locking hook 51 and the lifeboat 16 is released, and the locking hooks 51 and 51 'and the fifth pulleys 52 and 52' are held in the retracted state as shown by solid lines in FIGS. To do.

  Periodically, training work using the lifeboat 16 is also performed. In this case, as shown in FIG. 1, after the occupant in the lifeboat 16 releases the lock state of the lock mechanism 20 in a state where the locking hook 51 is connected to the lifeboat 16, the lifesaving described above is performed. The lifeboat 16 is launched to the sea surface by an operation completely opposite to the lifting operation of the boat 16.

According to the lifeboat launching apparatus of the above embodiment, the following effects can be obtained.
(1) In the above embodiment, the davit arms 22 and 23 are attached to the sliding lamp 14 via the hinge mechanism 21 so as to be able to reciprocate in the front-rear direction, and the upper end portion of the sliding lamp 14 and the davit arm 22 are mounted. , 23, an arm hoisting mechanism K1 using the hoisting winch 28, the first and second wires 31, 32, and the first to fourth pulleys 33 to 36 is mounted. The davit arms 22, 23 are tilted back and forth in the front-rear direction. For this reason, compared with the structure using the conventional tilt cylinder 71, the position of the hinge mechanism 21 that supports the davit arms 22 and 23 is not the lower end of the sliding ramp 14, but the central portion of the sliding ramp 14 in the height direction. Can be set slightly above. Therefore, when the davit arms 22 and 23 are in the standing state, the amount of the lifeboat 16 entering between the davit arms 22 and 23 is reduced, and as described with reference to FIGS. Since the lifeboat 16 hardly needs to be considered to interfere with the davit arms 22 and 23 in the final stage of the lifting operation or the initial stage of the launching operation, the launching and lifting work of the lifeboat 16 can be performed quickly and easily. Can be done.

  (2) In the above embodiment, the davit arms 22 and 23 are set above the sliding ramp 14, and the position of the arm hoisting mechanism K1 that tilts the davit arms 22 and 23 and the lifting mechanism K2 that moves the lifeboat 16 up and down is the ship. It can be mounted not on the outer edge near the sea but on the inside of the ship. For this reason, it is difficult for seawater splashes to adhere to the arm hoisting mechanism K1 and the lifting mechanism K2 during the navigation of the ship, and corrosion due to seawater is suppressed to improve the durability of the arm hoisting mechanism K1 and the lifting mechanism K2. it can.

  (3) In the above embodiment, since the hoisting winch 28 is used as the arm hoisting mechanism K1 for tilting the davit arms 22, 23, oil leakage is prevented and marine pollution is prevented as compared with a method using a cylinder. In addition, the operation of the hoisting winch 28 can be easily performed and stopped using the switch of the portable operation box, and the degree of freedom of the operation work can be improved. In addition, since it is not a hydraulic drive system, it is not necessary to equip a dedicated hydraulic unit and piping that can be activated by the emergency power supply of the ship, reducing the number of parts and facilitating repair and maintenance inspection work of the arm hoisting mechanism K1. Running costs can be reduced.

(4) In the above embodiment, since the first and second wires 31 and 32 are independently provided in the arm raising / lowering mechanism K1, the raising / lowering function can be maintained even if one of the wires is disconnected.
(5) In the above embodiment, the first and second wires 45, 46 are connected to the first and second hoisting drums 43, 44 of the hoisting winch 42 of the lifting mechanism K2, and the wires 45, 46 are connected. Since the two fifth pulleys 52 and 52 ′ are mounted in the middle part so as to be able to be moved up and down, the lifeboat 16 can be prevented from falling even if one of the wires is disconnected. In addition, when the lifeboat 16 is moved up and down, the pair of fifth pulleys 52 and 52 'are held at the same height, so that the lifeboat 16 can be prevented from rolling.

In addition, you may change the said embodiment as follows.
As shown in FIG. 10, the fifth pulley 52 as the movable pulley of the lifting mechanism K2 is omitted, and is locked to the tip ends of the first and second wires 45 and 46 via weights 70 and 70 ′. The hooks 51 and 51 'may be attached.

  In the embodiment, the guide roller 15 is attached to the sliding ramp 14 so that the lifeboat 16 is smoothly lowered. However, the guide roller 15 is omitted and along the inclined surface of the sliding ramp 14, The lifeboat 16 may be slid.

  In the embodiment, when the position sensor 66 is operated, the operation of the hoisting winch 28 is stopped. However, the davit arms 22 and 23 are brought into contact with the tilting force applying mechanism 61 and the hoisting winch 28 is moved. The hoisting winch 28 may be stopped when the rotational torque exceeds a set value.

  The winding winch 42 may be mounted on the sliding lamp 14 side. Further, the hoisting winch 42 may be omitted, and the function of the hoisting winch 28 as the hoisting winch 42 may be provided.

  In the embodiment, as shown in FIGS. 4 and 5, the arm raising and lowering mechanism K1, the first and second wires 31 and 32 of the lifting mechanism K2, and the first and second wires 45 and 46 are provided. The second wire 32 and the second wire 46 may be omitted.

  In the embodiment, a pulley is used as the arm raising / lowering mechanism K1, but this pulley is omitted, and the wires connected to the first and second raising / lowering drums 29, 30 are connected to the davit arms 22, 23. You may do it.

  In the above embodiment, the tilting force applying mechanism 61 applies the pressing force when the davit arms 22 and 23 are tilted forward, but the following configuration may be used instead. Good. When the davit arms 22 and 23 are held in a standing position slightly tilted forward (for example, 2 to 8 ° with respect to the vertical line) and the wire is unwound by the hoisting winch 28, the davit arms 22 and 23 The davit arms 22 and 23 may be tilted forward by their own weight.

The right view which shows one Embodiment which actualized the lifeboat launching apparatus of this invention. The rear view of the lifeboat launching apparatus of this invention. The perspective view of a lifeboat launching apparatus. FIG. 3 is a schematic perspective view showing a hoisting winch, a wire, and a pulley of an arm hoisting mechanism of a davit arm. FIG. 3 is a schematic perspective view showing a hoisting winch, a wire, and a pulley of an elevating mechanism that moves the lifeboat up and down. (A) is a center part longitudinal cross-sectional view of the tilting force provision state of a tilting force provision mechanism, (b) is a center part longitudinal cross-sectional view of the state in which the tilting force was open | released. The right view of the lifeboat launching apparatus explaining the operation | movement which launches a lifeboat. The right view of the lifeboat launching apparatus explaining the operation | movement which operates a davit arm and pulls up a lifeboat. The right view of the lifeboat launching apparatus explaining the operation | movement which raises a lifeboat by raising a davit arm. The schematic perspective view which shows the winding winch of the raising / lowering mechanism of another embodiment of this invention, a wire, and a pulley. The right view of the retreat state of the lifeboat which shows the conventional lifeboat launching apparatus. The right view of the use condition which shows the conventional lifeboat launching apparatus.

Explanation of symbols

  K1 ... Arm hoisting mechanism, K2 ... Elevating mechanism, 14 ... Sliding ramp, 16 ... Lifeboat, 21 ... Hinge mechanism, 22, 23 ... Davit arm, 25, 26 ... Support arm, 28 ... Hoisting winch, 42 ... Hoisting winch 43, 44 ... winding drum, 45, 46 ... wire, 61 ... tilting force applying mechanism, 62 ... case, 63 ... tilting force applying rod.

Claims (5)

At the middle height position of the sliding ramp that can guide the lifeboat obliquely downward and fall freely, the lower ends of the pair of left and right davit arms are respectively attached to the sliding lamp so as to be capable of reciprocating in the front-rear direction. An arm hoisting mechanism having a hoisting winch for reciprocatingly tilting the davit arm back and forth between the upper part of the sliding ramp and the davit arm is mounted, and the arm is tilted forward with respect to the davit arms. A lifeboat launching device equipped with a lifting mechanism equipped with a hoisting winch for moving the lifeboat up and down in a state of being lifted. 2. The davit arm according to claim 1, wherein the davit arm is supported in a vertical state so that the davit arm is always oriented vertically. In the vertical state of the davit arm, a tilting force is applied to the davit arm by a tilting force applying mechanism. A lifeboat launching device characterized by that. In Claim 1 or 2, the undulation winch is provided with two undulation drums connected in series, one end of each wire is connected to each of the undulation drums, and an intermediate portion of each wire is connected to the davit arm. The other end of the wire is connected to the sliding lamp side, and two hoisting drums connected in series are provided on the hoisting winch. Is characterized in that one end of each wire is connected, the middle part of both wires is hung on a fixed pulley and a moving pulley provided on the davit arm, and the other end of both wires is connected to the davit arm. Lifeboat launcher. 4. The sliding arm according to claim 3, wherein support arms are respectively attached to the left and right sides of the upper end of the sliding lamp, the undulating winch is attached to the support arms, and the wires are respectively connected to the support arm and the davit arm. A lifeboat launcher characterized in that it is hung on a plurality of pulleys mounted, and the other ends of both wires are respectively connected to predetermined positions of the support arm. 5. The tilting force applying mechanism according to claim 2, wherein the tilting force applying mechanism is fixed at a predetermined position on the sliding lamp side and supported so as to be directed forward, and is accommodated in the case. A lifeboat launching apparatus comprising: a tilting force imparting rod that is tilted; and a biasing member that is housed in the case and biases the tilting force imparting rod forward.

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