JPS64275B2 - - Google Patents

Description

[Detailed Description of the Invention] (Object of the Invention) This invention is a lifeboat launching device (hereinafter referred to as a boat) for evacuating crew members from a ship, in which two boats are suspended from one davit and the boat davit is launched once. This invention relates to a double-barrel boat davit that can launch two boats one after the other and shorten the evacuation time for crew members.

(Prior art) Conventionally, there were boat davits that suspended one boat on a single davit and swung the cradle out by sliding it on an inclined frame, but there was a type of boat davit that suspended two boats. Boat A and Boat B shown in the figure are lined up vertically, but Boat A is always on deck and Boat B is on davits.
D Suspended by _B. As shown in Figure 2, the method of launching a boat is to first swing boat B from the storage position to the launching position using the screw screw S, then pull it to the boarding position, board the boat, lower the boat onto the sea surface, and reach the launching position. After leaving the boat B, the boat winch on the deck is manually used to wind up the hooked pulley and returned to the storage position using the davit screw screw S. Next, in order to lift boat A, dock the boat A with a pulley with a hook. Then, by manual force, the boat A is lifted up from the swinging position to the boarding position, and the boat A is boarded, and the boat A is lowered to the sea surface and the hooked pulley is detached from the boat hook. In this method, the evacuation time is long because boats and other objects are hoisted up manually, making it extremely difficult to launch two boats in 30 minutes as required by international conventions.

(Structure of the Invention) This invention allows two boats to be stored at the same time, launched at the same time, and boarded at the same time, and by launching them one after another, the boat can be launched one after another within the time agreed by international treaties. Can escape for a short time 2
It is a linked boat davit. The basic structure is a long arm-shaped column that bends outward so that two boats can be suspended in a stair-like manner on a boat davit, and pulleys with hooks that can hang boats are attached to the top and tip of each column. In addition, there is a pair of front and rear cradles that are circumscribed diagonally rearward of the upper pulley and have a rope restraining pulley attached to their shafts, and a slanted cradle that allows the support wheels to be inserted into the upper pulley to move the cradle and swing out the frame column to the swinging position. A pair of front and rear frames with guide frames installed, and a cradle stopper that allows wheel stops to be moved in and out to move the cradle further to a new launching position for launching two boats one after the other is attached to the frame support frame. In addition, the two boat winches that hoist the ropes of the two boats onto the left and right drums are connected by a coupling and clutch switching device so that they can be operated simultaneously or independently, and by a connecting rod that is linked to the brake lever that operates them. It is equipped with a remote control device that can release and stop the brakes simultaneously or individually.

Embodiments of the present invention will be described below with reference to the drawings.

3 and 4 show a two-stage boat davit 1. FIG. A pair of front and rear cradles 2 have pulleys 3 and 4 on both sides with hooks pivoted on the tip and upper part of an arm-shaped frame that bends outward, respectively, and an upper pulley 4.
In addition to pivoting pulleys 5 on both sides of the sling restraint so as to circumscribe diagonally rearward of the cradle 2, pulleys 6 and 7 on one side are also pivoted on the waist and support legs of the cradle 2 to guide the sling for the boat. On the other hand, the frame 9 is an inclined frame supported by support frames vertically installed on the 01 deck D ₀₁ and the 02 deck D ₀₂ , and has four front and rear support wheels 8 that fit into the inclined guide frame 10 and can move while supporting the cradle 2. The front wheel of the supporting wheels is guided to the vertical guide frame 11 in the lower end support frame so that the cradle 2, which is pivoted on the cradle 2, can be swung out to the swinging position of the boat, and stopped by the wheel stop plate 13, and then the cradle 2 is moved to the swinging position. Hydraulic cylinder 1 for driving the cradle stopper 12 attached to the lower end support frame in order to
4 and the manual pump 15 to retract the wheel stop plate 13 and move the front wheel to the lower stopper 1 of the vertical guide frame 11.
You can continue until you hit 6. An upper stopper 17 is installed near the upper end of the inclined guide frame 10 of the frame 9, and the rear wheel of the cradle 2 can be placed in the storage position.

The sling device for suspending two boats on the boat davit 1 is constructed by attaching the ends of the slings 18 and 19 to the mounting adjustment screws 21 attached to the upper end of the frame 9, passing the sling ropes through the sling pulley 5, and attaching the slings 18 to the hook at the tip of the cradle. The hanging rope 19 passes through the pulley 4 with an upper hook, passes through a pulley attached to a floating block 20 hooked to the hook, and guides the pulley 3 downward again through the pulleys 3 and 4 with hooks. 7, the direction is changed to the lower side of the frame 9 by a double pulley 22 protruding from the upper end of the frame 9, and as shown in FIG. Pulleys 23 and 2 are installed on the path leading to the hoisting to the left and right drums of the two winches 40 and 41 installed on the 01 deck D ₀₁ adjacent to the support frame.
4, 25, 26, 27, 28. On the other hand, an end link 30 with an ear ring is attached to the end of several end links 29 connected to a floating block 20 hooked on a pulley 3 with a hook at the tip end.
, and hook Boat A's lifting hook to hang Boat A. In addition, boat B is suspended in two steps in the cradle 2 by directly connecting the end link 30 with an ear ring to the floating block 20 hooked on the pulley 4 with the upper hook, and hanging the boat B by hooking the lifting hook of boat B. It can be stacked to store two boats. When storing the boats A and B, a latching cable 31 is attached to the hull from the outer side of the boats A and B to a fulcrum protruding from the inclined frame of the frame 9, and a wooden cable is attached between the inner side of the boats A and B and the cradle 2. boat tiyoke 32
Insert it in two places, front and back, to fix the left and right swinging.
Next, before launching the boat, move the cradle 2 to the starting position and move the boat to 01 for boarding.
Support points 33 and 34 are protruded from the lower part of the cradle 2 in order to pull it to the side of the deck D ₀₁ , and the pendant rigging 35 is connected to the ear rings 37 attached to the end links 30 of boats A and B, and the lower end support frame 11 of the frame 9 is connected to the pendant rigging 35. Side link 38 protruding in the gunwale direction
A bosing rope 36 is provided which can directly connect the ear ring 37 to the ear ring 37 and remove the pendant rope 35 after pulling the boat with an attached tackle.

The boat winches 40 and 41 are arranged in the longitudinal direction on the 01 deck D ₀₁ and can be switched to simultaneous operation or independent operation by means of a coupling 43 and a claw-type clutch 44 which can be switched by a moving shifter, as shown in FIG. Furthermore, a portable air motor 5 is installed on the outside of the left and right winch brakes 42.
8 are directly connected to each other to use as the power to hoist the rope, but in an emergency, they can be removed and the gravitational action stroke due to the boat's own weight can be manually controlled to enable escape. The coupling clutches 44 of both winches are used as a "contact" when hoisting ropes at the same time, but in an emergency, the clutches 44 are "disconnected" and a remote control device 48 is installed as shown in FIGS. Install as shown in Figure 7. 01 Deck D ₀₁ A winch brake lever 46 is pivoted vertically to the left end of a control rod 49 supported by left and right brackets 54 and 55 installed on the deck D 01, and a control arm 50 is pivoted horizontally to the right end. The left and right ends of the connecting rod 47, which is pivoted on the upper end bracket of the control rod 51 which can be moved up and down and connected horizontally to the left and right, are half-inserted into the cylindrical distance rod 52, and the connecting rod 51 is inserted from the left and right outside. Fit the adjusting rod 53 until it touches the outer end of the connecting rod 47, and the other end is pivoted to the lower end bracket portion 57 of the adjuster rod 56, which is pivoted to the bracket 39 attached to the left and right brake weights 45, and then the brake lever is attached. 46
By this operation, the connecting rod 47 is moved up and down, and the left and right brake weights 45 can be moved up and down at the same time. When switching to independent braking operation of either winch, this can be done by sliding inward the distance rod 52 linked to the brake weight 45 of either winch 40 or 41 to disconnect it from the connecting rod 53. .

Figure 8 shows the boarding bridge from deck D ₀₂ to boat B so that boats A and B can be boarded at the same time.
This is an example of boarding two boats at the same time by boarding boat _B by crossing over to boat B using a gangplank with B R protruding from its tip _and folded back and hinged. It is something that

(Operation of the invention) The operation of the invention will be explained according to the position of the boat shown in FIG. 20, slings 18 and 19, cradle 2, and winches 40 and 41, the boat is three-dimensionally stored on the deck, and the boat is secured with lashing ropes 31, and a boat yoke 32 is inserted to hold the boat in the stored position.

2. Swinging out the boat (swinging position in the figure) When the coupling clutches 44 of the boat winches 40 and 41 are disengaged and the brake lever 46 is raised, both winch brakes are released via the connecting rod 47, and boats A and B are The four front and rear wheels of the supporting legs of the cradle 2 rotate within the guide frame 8 of the tilted frame 9 until it reaches the swinging position due to its own weight, and the front wheels are guided by the vertical guide frame 11 in the lower end support frame to reach the cradle stopper. It hits the wheel stop plate 13 of No. 12 and stops.

3 Boarding and evacuation of boat A (boarding position and descent position in the diagram) Boat A cuts the winch 41 side of the departure rod 52 of the brake operating device 48 at the swing-out position, and when the brake of the winch 40 is further loosened, the pendant line 35 is stuck between the fulcrum 33 of the cradle and the ear ring 37 of the suspension end link 35 of boat A, and when boat A descends to the boarding position, it is attached to the 01 deck.
D ₀₁ is pulled to the boarding side of the boat, and then pulled to the boarding position by the bosing rope 36 with a tail connected between the ear ring 37 and the side link 38 protruding from the side of the frame support frame. I do. Thereafter, the slip hook of the pendant cable 35 is removed and the bosing cable 36 is also loosened to lower the boat A to the lowering position V and escape to the sea surface.

4 Boarding and evacuation of boat B (in the figure, swing out position, boarding position, and descent position) Boat B disconnects the winch 40 side of the departure rod 52 of the brake operating device 48 and further loosens the brake of the winch 41, while the frame 9 When the wheel stop plate 13 of the cradle stopper 12 attached to the lower end support frame is retracted by the manual pump 15 and the drive hydraulic cylinder 14, and the front wheel of the cradle 2 is dropped until it hits the lower stopper 16 of the vertical guide frame 11, the cradle is closed. reaches the maximum swing position and stops. When the brake is further loosened, the pendant cable 35 of the boat B becomes attached as described above, and the boat B descends to the boarding position and is pulled to the boarding side.
6 is connected between the end link ear ring 37 of the boat B and the side link 38 on the side of the boat, and the boat B is pulled and boarded. Then rigging 35 and 36
Loosen the boat winch 4 in the lowered position V.
When brake 1 is released, boat B reaches the surface of the sea and escapes.

(Effects of the Invention) Since the present invention has the above configuration, it has the following advantages.

(1) Since two boats can be installed above the passageway as a storage area for boats, a safe passageway can be secured, space utilization efficiency is improved, and emergency safety and ship design economy are improved.

(2) Since two boats can be launched at the same time or in succession, safety can be guaranteed with respect to human life through safe and quick evacuation.

(3) During the boat launching process, there is no hoisting of the boat, and everything is operated by gravity, and the launching function can be performed only by manual force, which shortens the evacuation time and launches the boat faster. It can be done safely.

[Brief explanation of drawings]

Figure 1 is an overall layout (front view) of a conventional two-barrel boat davit, Figure 2 is the same figure (side view), and Figure 3 is the same figure (side view).
The figure shows the overall layout (side view) of a two-tiered boat davit, Figure 4 is the same view (front view), Figure 5 is a front view of the overall boat winch layout, and Figure 6 is the overall layout of the winch brake remote control device. (side view), Fig. 7 is the same figure (front view), and Fig. 8 is a simultaneous boarding procedure. Explanation of the symbols of the main parts, 1...Two-tiered boat davit, 2...Cradle, 3...Pulley with hook at the tip, 4...Pulley with upper hook, 5...Pulley to hold rope, 8...Wheel (Cradle), 9...
Frame, 10... Inclined guide frame (frame), 1
1... Vertical guide frame (frame), 12... Cradle stopper, 13... Wheel stop plate, 14... Drive device, 40... Boat winch (for boat A),
41...Boat winch (for boat B), 42...
...Winch brake, 43...Cup spring, 4
4...Switching clutch, 45...Brake weight, 46...Brake lever, 47...Connecting rod, 48...Remote control device.

Claims (1)

[Claims] 1. A pulley for hanging two lifeboats in a stepped manner is attached to the upper part and tip of an arm-shaped strut that bends outward from the ship's side, and is further circumscribed diagonally to the rear of the upper pulley. A pair of front and rear cradles with rope-retaining pulleys pivoted thereon, and a drive device that can freely move in and out the wheel stop plate attached to the vertical guide frame following the end of the inclined guide frame of the frame into which the cradle support wheels can be inserted were attached. A pair of front and rear frames with cradle stoppers and a coupling and switching clutch device that can operate two boat winches simultaneously or independently are installed between them, and the brake weights of both winches can be adjusted simultaneously in conjunction with the brake lever of the winch brake. A double-barreled boat davit comprising a boat winch equipped with a remote control device and a connecting rod that can be raised and lowered.