JPS60121184A - Release-recovery device for lifeboat - Google Patents

Abstract

PURPOSE:To make a device into a simple structure with the number of three winches reduced to one unit alone, by hooking a sling wire, engaging a lifeboat mounted on a downtilt deck of the stern, on a winch on a lower deck of the down-tilt deck via a derrick tip, while making a locking device on an upper end part of the lifeboat operatable with a cylinder mechanism. CONSTITUTION:A lifeboat B is mounted on a slide block 2 installed on a down- tilt deck D1 of the stern part. Portal derricks 26 are made to be rockable centering on both symmetrical positions of the slide block 2 and a fulcrum shaft of a derrick braket 25 on an upper deck. A slong wire 36 engaging a winch 32 on the upper deck in hooked on each pulley block of these portal derricks 26, while the lifeboat B is supported from each upper tip of these portal derricks 25. On the other hand, a rear upper end of the lifeboar B is engaged to a locking device 8, and its engagement or disengagement takes place with each of cylinder mechanisms 12 and 13. Making an operating mechanism for each part simple enough, a free drop of the lifeboat and its recovery operation are smoothly performed.

Description

[Detailed description of the invention] (Purpose of @Ro Recovered to save the lives of shipwrecked crew members, etc.
This invention relates to a boat discharge and recovery device that can safely, quickly, and reliably carry out work.

(Prior art) Conventionally, completely enclosed boat release and recovery equipment (N has self!1
A hoist winch, derrick winch, and position winch are required as power equipment for lowering and retrieving objects, and the rope cable to the winch installed on the deck runs on the deck, which takes up a lot of floor space and reduces the structure. It was complicated, took a lot of time to install, and an increase in costs could not be avoided. Examples of this are (1) rear deck as shown in Figures 1 to 3; l and the slide S, which is tilted downward toward the stern on the aft inclined deck DI, is pivoted to the support shaft 59 provided on the derrick bracket BD, which is installed on the left and right side edges of the inclined deck OL, and can be raised and lowered freely. The rJJJ pulley hanging pulley SR is attached to the tip of the derrick through the #pulley SN installed in the load block IIL, which is suspended from the tip of the derrick. The pulley S1 is attached to the derrick bracket BD, and the rear end of the sloped deck. Bracket 8 attached to
(1) A hoisting rope device with a hoisting rope RH installed on the deck via a pulley S2 attached to the hoist winch W [1], and (2) a bracket attached to the back of the tip of the portal derrick D (2). A tension bar T13 is bendably connected between B13 and a bracket BT attached to the top of the tower TS supporting the derrick column Tc vertically installed at the rear end of the rear deck Dol, and the gate-shaped derrick D (, The pulley SI is held in the swinging position and is pivoted on both the left and right sides of the derrick tip, and the pulley SD is pivoted on the top of the derrick support Tc.
The pulleys SV, SX, and SY were installed on the deck I from the pulley Sυ pivoted to the base of the derrick support T (via the Derrick with tow rope RD stretched on the left and right drums (leaching device and (3) bow until it can be locked to the free-fall locking device installed at the top of the slide S) - B-f - Pull up on the slide S Therefore, the tow line Rp connected to the stern TaflI and the takeoff fitting BR is stretched through the pulley Sp pivoted to the upper end of the scrap platform to the position winch Np installed on the deck 001. It has two components.

(Structure of the Invention) This invention makes it possible to raise and lower a derrick and suspend a boat with a single winch, and shorten the distance to move a boat placed on a slide to a storage position. In addition to driving the tow line using a hydraulic cylinder instead of a tow line, the derrick device has been developed to eliminate the need for tension bars, derrick supports, and towers, and the boat release and recovery system has a structure that avoids ropes passing over the deck. It is a device.

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

Figures 64 to 6 show a boat discharge and recovery device l. Slip 8 installed on the rear deck OUT, tilting downward toward the stern.
2 supports the left and right skid rails 3 by the lower deck 54, the front column 4 and the middle column 5, and connects the front part to the upper end connecting frame 6.
A bracket 7 protruding from the center of the upper end connecting frame 6 connected to form a U-shape is equipped with a free-falling locking device 8, and a bearing portion 9 protruding left and right is provided with a derrick tip lO. A position cylinder 12 that can be driven hydraulically is attached to the bracket 7 at the bottom of the lock device @ 8, and a knuckle shaft 14 at the tip of the piston rod 13 is attached to the position cylinder 12 for positioning. A storage drive in which the hook 16 at the tip of the tow line 15 is hooked and the other end is connected to the takeoff fitting 17 attached to the stern of boat B. A
An operating valve 19 that operates 11l18 is installed on the upper end connecting frame 6. The free-fall locking device 1ii8 has a protruding hook 21 that can be hooked to a locking fitting 20 protruding from the stern of the boat B, and is also secured with a safety bolt 22 to prevent the boat from falling even if the lock lever 23 is accidentally released. let Support qtll provided on the derrick bracket 24 attached to the left and right side edge decks of the boat slide 2
The gate-shaped derrick 26 that is attached to 125 and can be raised or lowered is on the left 6.
A portal-shaped derrick 26 in which the left and right legs are connected by an intermediate connecting beam 27 above the 11111 part, and the left and right legs are curved inward so that they can be connected to the tip block 28, and both are brought together at the tip to form a triangle. It is. At the depression angle position L when the portal derrick 26 is swung outboard, the deck is 0.
The derrick stopper 29 protruding from the rear end of the slide 2 contacts the lower surface of the derrick, and at the elevation angle ml, the derrick stopper 30 protruding from the upper side of the slide 2 contacts the upper surface of the derrick. The power unit 33 of the boat winch 32 is stopped by the action of the provided derrick limit switch 31. Derrick tip block 2
Two side pulleys 34 are pivoted on both sides of the slide 8, and the two side pulleys 11 are pivoted on the left and right bearings 9 at the upper end of the slide. A hanging rope 36 is wound up and stretched around the left and right drums 35 of a boat winch 32 installed above.

- The load block 37, which is suspended from the pulleys 34 on both sides of the derrick tip ff1lo via the rope 36, is loaded until it reaches the swinging position of the gate-shaped derrick 26 by the rope 36 passed through the internal m pulley 38. When the block 37 is lifted, the top of the locking metal fitting 39 installed on the upper end of the load block 37 comes into contact with the lower outer periphery of the guide metal fitting 40 that projects downward from the derrick tip lO and forms an arcuate guide surface on the outer periphery. The m pulley 38 stops rotating as it comes into contact with the m pulley 38 and stops.
Furthermore, when continuing to hoist the hanging rope 36, the portal derrick 26 rotates around the support shaft 25 of the derrick bracket 24 from the depression angle position ■ to the elevation angle position 1llil, so that the load block 37 is engaged at the derrick tip @mho. The stopper 39 is inserted into the guide metal l at the angle of elevation of the derrick.
It is guided while contacting the outer circumferential surface of ll1!140 and sinks into the derrick tip 10, and is introduced into 11118 formed between the hook metal fitting 41 protruding from the lower part of the guide metal 140, and finally the locking metal fitting 39 It takes a position where it is hung on the hook hardware 41. Therefore, the derrick elevation angle mi
At , boat B, which has a lifting hook 44 hooked to a chain tJg43 at the lower end of a boat fall 42 that is hooked to a piece of metal scrap 41 and connected to the lower part of a load block 37 suspended from a derrick, is tilted downward onto the slide z. It can be placed at the lifting position. In addition, one end is tied four times to the lifting hook 44, and the other end is connected to the slide top a part connecting frame 6 via a small pulley 46 pivoted to a support frame 45 installed on the side of the derrick at the lower part of the derrick tip block 28. A small pulley 48 that is pivoted on the boat winch 32 is passed through a small pulley 47 that is pivoted.
A remote control line 50 is attached to the tip of the winch brake lever 49 via a remote control line 50, so that the boat winch 32 can be operated after boarding the main boat B.

Furthermore, when the positioning tow line 15 connected to the harrier 17 at the stern of the boat that is in the lifting position on the slide 2 is moved to a predetermined storage position by the storage drive device 18, the boat is lifted onto the slide 2. The slide 2 can be lifted up until the installed position limit switch 51 is activated, and the drive hydraulic power can be turned off at the retracted position.

(Action of the invention) Boat release and recovery! A i? The effect of l1 will be explained for four cases with reference to FIG.

(1) If the ship sinks, the A5 closed boat B on board due to a free-floating emergency a female will be placed in the storage position of the slide 2 and will simultaneously dive under the sea surface, but due to the buoyancy of the boat B, the slide will slide. Boat B floats by destroying the front and rear guides 52 and 53 which are installed at the front and rear of the left and right skid rails 3 of 2 and which hold boat B, so that boat B can be launched on the sea surface and evacuated. In this case, the free fall lock on the slide + 41 it
There is no problem because the lock lever 23 of No. 8 is in the open state upwardly.

(2) After boarding the free-fall boat, release the safety bolt 22 on the slide 2, and then operate the lock lever 23 of the free-fall lock 4Aia8 from the lever to release it, and the boat B will move backward from the descending position on the platform 2. Boat B can be launched and operated as it descends and surfaces after landing on the water.

(3) After gravity descent, connect the lower tide connection ring 43 of the port fall 42 connected to the load block suspended from the derrick tip 10 to the lifting hook 44 of the boat B, and further,
After the remote control line 50 is also connected, the position cylinder 12 of the storage unit 1ltlI device 18 is connected by the hook 16 at the tip of the position tow rope 15,
After releasing the safety bolt 22, the free-fall locking device i
After releasing the lock lever 23 of 18, the operation valve 19 of the position cylinder 12 is released, and the boat B descends on the slide 2 according to the self-report. Next, when the positioning tow hook 16 is released, the boat B is suspended from the derrick tip 10 by the boat fall 42 and placed on the slide.

Then, when the brake lever 49 of the boat winch 32 is released by operating the remote control line 50 from inside the boat, the portal derrick 26 changes from the elevation angle tFi I to the depression angle position! It is swung out to i11 and comes into contact with the derrick stopper 29, and the rotation of the portal derrick 26 is stopped, but the load block 37 continues to descend due to the loosening of the rope 36, and as boat B lands on the sea surface, the port fall 42 is lifted. The hook 44 can be released and the boat B can be started and evacuated.

(4) Recovery (3) Perform the exact opposite procedure to the gravity descent. That is, after connecting the lifting hook 44 of the boat B to be recovered to the connecting ring 43 at the end of the boat fall 42 suspended from the derrick tip 1o via the load block 37,
When the boat winch 32 is operated on the ship and hoisted up, the boat leaves the sea surface and rises until the locking metal fitting 39 of the load block 37 comes into contact with the guide metal fitting 4° of the derrick tip 1o at the swinging position of the gate-shaped derrick 26 and stops. Then, the gate-shaped derrick 26 rotates until it reaches the elevation position (3) and comes into contact with the derrick stopper 30, and the derrick limit switch 31 is activated, so that the power unit 1133 of the boat winch 32 is stopped.

- At this time, I was leaning downward on the boat B on the slide 2, which was lifted! The load block 37 is then hooked onto the hook metal fitting 41 of the derrick tip lO. Then, the hook 16 at the tip of the position tow line 15 connected to the detachment fitting 17 protruding from the stern of the boat is operated until the piston rod 13 of the position cylinder 12 is pushed out and can be hooked onto the knuckle shaft 14 at the tip. Valve 1
Operate 9. If the hook 16 at the tip can be hooked, operate the operation valve 19 to the retract stroke, slide the boat B and move it over the top 2, and hook the hook 21 of the free-fall locking device 118 at the upper end of the boat to the latching metal fitting 20 at the stern of the boat. When the position limit switch 51 is activated, the retractable drive III
The IJ device 18 automatically stops.

Then, after setting the lock lever 23 of the ti18 to the lock position and inserting the safety bolt 22, the position cylinder 12 and the hook 16 of the position tow cable are connected.
M is cut off, and the connection between the port fall 42 and the lifting hook 44 is also cut off, and the boat trolley is set in the retracted state.

(Effect of the invention) This invention has the following advantages because of the above-mentioned groove structure.

(1) By reducing the number of winches from three to one, the structure is simplified and the labor required for processing and assembly is reduced. Costs can be reduced by reducing the number of parts and weight.

(2) The floor space occupied by ropes passing over the deck is reduced, allowing for effective use of the deck.

(3) Installation is easy and the work period can be shortened.

[Brief explanation of the drawing]

Figure 1 is an overall layout of a conventional boat discharge and recovery device (front view), Figure 2 is the same as above (plan view), Figure g3 is the same as above (side view), and Figure 4 is the boat discharge and recovery device of the present invention. The overall arrangement of the device (front view), Figure 5 is the same as above (plan view), and Figure 6 is the same as above (side view). (Explanation of symbols of main parts) l...Boat release and recovery device 2...L bone Li Base 8...Free fall locking device 9...Bearing part lO...Derrick Tip part 11...Two side pulley (upper end) 12...Position cylinder 18...Retraction drive device 24...Derrick bracket 2...Support shaft 26... Portal derrick 32...Boat winch 34...Two side pulley (tip) 35...Left and right drums 36...Hanging column 37...Load block 38...Moving pulley 40...Guide hardware 41...Hook hardware

Claims (1)

[Claims] The lifeboat slide was tilted downward at the stern and was constructed on the deck.The slide was attached to the four ends of the portal-shaped derrick, which was pivoted to the support shaft installed on the derrick bracket installed on the deck on the left and right sides of the lifeboat slide, which was tilted downward at the stern. The left and right ropes are attached to bearings installed at the tip of the derrick and the upper end of the slide, respectively, with a hanging rope passed through an m-pulley installed in a load block that can be crimped or suspended at the tip via protruding guide hardware and hook hardware. A gate-shaped derrick swing-out lowering and recovery device was installed on the left and right drums of the boat winch, which was passed back and forth between the pulleys of the rows on both sides and placed on the deck at the bottom of the slide, and the lifeboat was installed at the top of the slide. A lifeboat release and recovery device comprising: a lifeboat storage section # device including a position cylinder attached to a descent lock device.