JP3068463U - Boat davit rope speed switching mechanism - Google Patents

Abstract

(57) [Summary] (Modifications required) [Problem] To prevent the danger of the boat being swirled by the following wave during the hoisting by quickly hoisting the boat to a position away from the surface of the sea, and then to make the boat at normal speed To easily switch to a safe storage location. The cradle moves along with a pair of supports to move out of the deck from the deck, or from the outboard to the deck.
In the boat davit moving upward, the winch 6 is provided with a rope speed changeover switch 20, which is provided with a speed changeover knob 21 and a rope movable button 22. Going, the boat was quickly released from the surface of the sea and then dropped to normal speed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention was applied to a boat davit rope speed switching mechanism that allows various boats, such as lifeboats and security rescue boats, installed on the deck of a ship to descend from the storage location and to be stored in the storage location from outside the boat. In particular, the boat is quickly drained from the surface of the sea and quickly lifted away from the surface of the sea, thereby preventing the danger of the boat being swirled by the sea during the hoisting, and furthermore, the boat is not normally used. The present invention relates to a boat davit roping speed switching mechanism that can be easily switched to a speed and safely guided to a storage location.

[0002]

[Prior art]

 Generally, various types of boats, such as lifeboats, security rescue boats, patrol boats, etc., are stored on the deck of the ship, and when necessary, they are extended from the deck to the sea surface outside the boat by boat davits. , For the intended use.

As shown in FIG. 1, a boat davit A of this type is usually provided with a pair of supports 4 for supporting a boat 3 fixed and erected on a deck 2 of a ship 1 and a winch 6 for rope operation. A rope 7 is extended by a winch 6 through pulleys 19a and 19b at the middle part of the support 4 and a pulley 5 at the top, and is connected to a tip 8 of the rope 7 by a winch. And a cradle 10 that moves along 4 and abuts the boat side 9 of the boat 3.

The cradle 10 has a pair of cradle bodies 12 having a series of rollers 11, 11... 11 held by a roller support plate 15, and an auxiliary roller 14 extending upward from the cradle bodies 12. 11 and the auxiliary roller 14 are rolled along the pair of columns 4 so that the boat 3 is brought into contact with the cradle body 12 while being engaged with the deck. 2 to outboard, or from outboard onto deck 2.

The upper end of the arm 13 is provided with a cradle head 18 connected to the tip 8 of the rope 7. The boat 3 is detachably attached to the cradle head 18 at the upper end of the arm 13 at two locations near the bow and stern thereof (for example, the fixture 16 shown in FIG. 1) via a launching strap 17 having a predetermined length. The cradle 10 is mounted so as to abut the cradle body 12, and moves along with the cradle 10 from the deck 2 to the outboard or along the pair of columns 4 onto the deck 2 from the outboard.

[0006]

[Problems to be solved by the invention]

 By the way, the height of waves in the ocean reaches 4 to 5 m in bad weather. When the boat 3 is hoisted from the sea surface by the boat davit A shown in FIG. 1 in such a state, the hoisting speed of the rope 7 is always a constant speed of 15 to 18 m / min by operating the winch 6. For example, if the boat 3 is hoisted at a constant speed of 15 m / min, the boat 3 will be preliminarily lifted by the following wave before leaving a sufficient distance from the sea surface, which poses a great danger to boat occupants.

In order to avoid such a danger, it is conceivable to increase the winding speed of the rope 7 and wind it up. However, in this case, when the boat 3 is stored in the storage place on the boat 1, it is too fast. Be dangerous.

For this reason, in recent years, there has been a demand for the development of a variable speed hoist mechanism capable of hoisting the boat 3 at a high speed when draining the boat 3 and thereafter reducing the hoisting speed.

[0009] Therefore, an object of the present invention is to quickly drain a boat from the surface of the sea and wind it up quickly to a position away from the sea surface, thereby preventing a danger of the boat being washed up by a surf during the winding. It is another object of the present invention to provide a boat davit rope speed switching mechanism which easily switches a boat to a normal speed and safely guides the boat to a storage location, and improves on the above-mentioned disadvantages of the prior art.

[0010]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, a pair of posts for supporting a boat fixed on the deck of a ship, and a rope extending from a rope operating winch via a pulley at the tip of the post, A cradle that is connected to the tip of the rope and moves along a pair of pillars by operation of the rope; the cradle includes a pair of cradle bodies having a series of rollers and abutting on the boat side of the boat; And a cradle head portion connected to the tip of the rope at the upper end of the arm. The boat has a launching rope having a predetermined length at two locations near its bow and stern. To the cradle head at the upper end of the arm so that it can be detached and the ship side comes into contact with the cradle body. In a boat davit, which moves along with a pair of struts from the deck to the outboard or from the outboard to the deck, the winch includes a rope speed change switch having a speed change knob and a rope movable button. The feature is that the boat is drained from the sea surface at high speed by operation, and the boat is quickly separated from the sea surface and then dropped to normal speed.

[0011]

[Embodiment of the invention]

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an explanatory view showing the operation state of the boat davit and the rope speed switching mechanism according to the present invention.

In FIG. 1, a boat davit A according to the present invention includes a pair of upside-down columns 4 for supporting a boat 3 erected and fixed on a deck 2 of a ship 1, and a lower portion of the column 4 below the columns 4. A rope 7 extending from the rope operating winch 6 via the pulleys 19a and 19b at the middle of the column 4 and the pulley 5 at the top so as to be able to be extended or wound up by the winch 6, and connected to the tip 8 of the rope 7 to operate the rope 7; And a cradle 10 that moves along the pair of struts 4 and abuts on the ship side 9 of the boat 3.

The cradle 10 includes a pair of cradle bodies 12 having a series of rollers 11, 11... 11 held by a roller support plate 15, and an auxiliary roller 14 extending upward from the cradle bodies 12. 11 and the auxiliary roller 14 are rolled along the pair of columns 4 so that the boat 3 is brought into contact with the cradle body 12 while being engaged with the deck. 2 to outboard, or from outboard onto deck 2.

The upper end of the arm 13 is provided with a cradle head 18 connected to the tip 8 of the rope 7. The boat 3 is detachably attached to the cradle head 18 at the upper end of the arm 13 at two locations near the bow and stern thereof (for example, the fixture 16 shown in FIG. 1) via a launching strap 17 having a predetermined length. The cradle 10 is mounted so as to abut the cradle body 12, and moves along with the cradle 10 from the deck 2 to the outboard or along the pair of columns 4 onto the deck 2 from the outboard.

A feature of the present invention resides in that the winch 6 is provided with a rope speed changeover switch 20, as shown in FIG. The changeover switch 20 is provided with a speed changeover knob 21 capable of switching the winding speed of the rope between high speed, medium speed and low speed, and a rope movable button 22, and is connected to the winch 6 and a conductor 23. In the present invention, instead of using the conductor 23, it is also possible to communicate wirelessly by radio.

In this operation, if the speed change knob 21 is set to H and the rope movable button 22 is pressed, the rope 7 is operated at a high speed, for example, at a speed of 20 m / min. Stops when released. If the speed change knob 21 is set to M and the movable button 22 is pressed, the rope 7 is operated at a speed of, for example, 15 m / min in the same manner as described above, and stops when the rope 7 is released. Further, if the speed switch knob 21 is set to L and the movable button 22 is pressed, the rope 7 is operated at a speed of, for example, 10 m / min in the same manner as described above, and stops when released.

Further, when the speed change knob 21 is turned in the order of H, M, and L, for example, while keeping the rope movable button 22 pressed, the rope 7 cuts the speed in the order of 20 m / min, 15 m / min, and 10 m / min. It is operated continuously while changing.

Therefore, in the present invention, by operating the changeover switch 20, first, the boat 3 is quickly drained at a speed of 20 m / min from the sea surface, and is quickly wound up to a position away from the sea surface, and the boat is lifted by the following wave. Prevent danger. Next, the hoisting speed of the rope 7 is reduced to 15 m / min to approach the storage location on the vessel 1, and further reduced to 10 m / min for storage in the storage location.

In the present invention, it is also possible to quickly separate the boat 3 from the surface of the sea, reduce the speed to a medium hoisting speed, and then successively switch the operation of lowering the speed during storage.

[0021]

[Effect of the invention]

 As described above, in the present invention, since the winch was provided with the rope speed changeover switch, the boat was quickly drained from the sea surface and was quickly wound up to a position away from the sea surface. It prevents danger of drowning and, in addition, allows the boat to be easily switched to normal speed and guided safely to the storage area thereafter.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an operation state of a boat davit and a rope speed switching mechanism according to the present invention.

[Explanation of symbols]

 A Boat davit 1 Ship 3 Boat 6 Winch 7 Rope 20 Rope speed switch 21 Speed switch knob 22 Rope movable button 23 Conductor

Claims (2)

[Utility model registration claims] 1. A pair of pillars for supporting a boat fixed on the deck of a ship, a rope extending from a rope operating winch via a pulley at the tip of the pillar, and connected to the tip of the rope to operate the rope. A cradle that moves along a pair of struts, the cradle includes a pair of cradle bodies having a series of rollers and abutting on the boat side of the boat, and an arm extending upward from the cradle bodies. The upper end of the arm is provided with a cradle head portion connected to the tip of the rope, and the boat is detachably attached to the cradle head portion at the upper end of the arm by launching stroops of a predetermined length at two locations near the bow and stern, and Attached so that the ship side comes into contact with the cradle body, and as the cradle moves, In a boat davit which moves from the boat to the outboard or from the outboard to the deck, the winch is provided with a rope speed changeover switch having a speed changeover knob and a rope movable button. A boat davit rope speed switching mechanism characterized in that the boat is quickly separated from the sea surface and then dropped to a normal speed. 2. The rope speed change switch according to claim 1, wherein the rope speed change switch is a continuous three-stage change switch. The rope speed switching mechanism of the boat davit according to claim 1, wherein: