JP3077671U - Boat davit cradle structure - Google Patents

Abstract

(57) [Summary] (Modified) [Problem] To relieve the impact of the side of a boat hitting the cradle when the boat is brought into contact with the cradle on the sea, retracted, and rolled out of the boat. A pair of supports (4) for supporting a boat (3) on a deck (2).
And a cradle 10 connected to a rope 7 distal end 8 extending from a rope operating winch 6 via a pulley 5 at a column end and moving along the column, and the cradle is provided with a series of rollers 11 for a boat. A pair of cradle bodies in contact
12 and an auxiliary roller 14 extending upward from the cradle body.
The boat davit A, which moves along the support by the rollers and the auxiliary rollers, has a cradle chock 19 on the side of the cradle body that abuts the boat, and the cradle chock is fixed to the cradle body. And a fender formed on the base, and the fender is composed of side-by-side hollow rubber cushion members having a hardness of about 50 and a substantially D-shaped cross section.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention relates to the cradle structure of a boat davit for lowering various boats such as lifeboats installed on the deck of a ship from their stowage position and outboard, especially after the boat has been extended outboard. Also, the present invention relates to a cradle structure of a boat davit that can reduce the impact of the side of the boat hitting the cradle when the boat is brought into contact with the cradle at sea and retracted to wind up the cradle from outside.

[0002]

[Prior art]

 In general, various types of boats, such as lifeboats, security boats, patrol boats, etc., are stored on the deck on ships, and when necessary, they are sent out from the deck to the sea surface outside the boat by boat davits. Provided for the intended use.

As shown in FIG. 1, a boat davit of this type is usually composed of a pair of struts 4 for supporting a boat 3 fixedly erected on a deck 2 of a ship 1 and a rope operating winch 6. A rope 7 which is extended by a winch 6 via a pulley 5 at the top, or which is extended so as to be able to be wound up, and which is connected to a tip 8 of the rope 7 and moves along a pair of supports 4 by operating the rope 7. 3 is provided with a cradle 10 which abuts on the ship side 9.

The cradle 10 includes a pair of cradle bodies 12 having a series of rollers 11, 11... 11, an arm 13 extending upward from the cradle bodies 12 and having an auxiliary roller 14. 11 and the auxiliary roller 14 are rolled, and the boat 3 is brought into contact with the cradle body 12 along the pair of columns 4 while being brought into contact with the cradle body 12 and outboard from the deck 2 or The ship moves onto deck 2 from outside.

The above-mentioned auxiliary roller 14 is provided on the side facing the column 4, and improves the sliding on the column 4.

[0006] Usually, the above-mentioned boat davit, when the boat is extended out of the boat, abuts the boat on the cradle on the sea surface, and when the cradle is retracted and retracted from the boat, the side of the boat hits the cradle and receives an impact. Therefore, the side of the boat is damaged. Especially when the sea waves are high and rough, the impact is large, and the side of the boat will be scarred.

Conventionally, a cradle provided with a solid rubber fender made of hard rubber is used on the side of the cradle body that contacts the boat ship side in order to prevent the boat side surface from being damaged by such an impact. Had been.

[0008]

[Issues to be solved by the invention]

 However, with this type of cradle, the impact is still large, especially when the waves are high, and the boat side hits the cradle fender violently, and the boat side is still damaged.

Therefore, an object of the present invention is to strike the cradle out of the boat after the boat is extended out of the boat and then abut the cradle on the sea. It is an object of the present invention to provide a boat davit cradle structure which is soft and improves on the 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; An arm with an auxiliary roller extending upwardly from the boat, the roller and the auxiliary roller being rolled to move out of the deck along the pair of columns and outboard from the deck or out of the boat onto the deck. A cradle chock is provided on the side of the pair of cradle bodies that abuts on the boat ship side. And a fender formed on the base. The fender comprises a plurality of hollow rubber cushions having a hardness of about 50 and a substantially D-shaped cross section. And

[0011]

[Embodiment of the invention]

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

FIG. 1 is a plan view showing a specific example of the cradle structure of the boat davit according to the present invention and an operation state thereof. In the figure, A denotes a boat davit, which is fixed on a deck 2 of a ship 1 and supports a boat 3 via a support 4 for supporting a boat 3 and a pulley 5 attached to the tip of the support 4 to operate a rope. And a cradle 10 connected to the tip 8 of the rope 7 and moving along the pair of struts 4 by operating the rope 7 and abutting on the boat side 9 of the boat 3. You.

The cradle 10 includes a cradle body 12 configured to support a series of rubber rollers 11, 11... 11 in a roller support plate 15, and an arm 13 extending upward from the cradle body 12. And the arm 13 is provided with an auxiliary roller 14 on the side facing the column 4.

The boat 3 has a cradle head 18 (rope attachment) at the upper end of an arm 13 via a launching rope 17 of a predetermined length at two places near the bow and stern (for example, the attachment 16 in FIG. 1). The cradle body 12 is detachably attached to the block (block) and the ship side 9 is attached to the cradle body 12.

As shown in FIGS. 1 and 2, a feature of the present invention resides in that a cradle chock 19 is provided on the side of the pair of cradle bodies 12, 12 which contacts the boat side 9 of the boat 3.

As shown in FIG. 3, which is a cross-sectional view taken along the line AA of FIG. 2, the cradle chock 19 has a metal base 20 fixed to the cradle body 12 by welding or the like, and is not shown on the base 20. And fenders 21 mounted and formed by screws or the like.

Further, as shown in FIG. 3, the fender 21 is formed by arranging a plurality of, preferably two, hollow rubber cushion members having a substantially D-shaped cross section. This rubber cushion material uses a soft rubber having a hardness of about 50.

[0018]

[Effect of the invention]

 In the present invention described above, a cradle chock 19 is provided on the side of the pair of cradle bodies 12 and 12 that abuts on the boat side 9 of the boat 3, and this cradle chock 19 is composed of a base 20 and a fender 21 formed thereon. The fender 21 is made of soft rubber having a hardness of 50 to form a hollow rubber cushion material having a substantially D-shaped cross section, and a plurality, preferably two, of these are arranged in parallel. It deforms by about 15 mm with respect to the pressing force of the boat and absorbs the pressing force, thereby improving the cushioning property. As a result, when the boat is extended outboard, when the boat abuts on the cradle at sea and is retracted and the cradle is rolled offboard, the impact of the boat hitting the cradle is softened, and the waves are particularly high. Even so, the shock is softened and the side of the boat is not damaged.

[Brief description of the drawings]

FIG. 1 is a plan view showing a specific example of a cradle structure of a boat davit according to the present invention and an operation state thereof.

FIG. 2 is a partial plan view showing the cradle structure according to the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

[Explanation of symbols]

 A Boat davit 1 Ship 2 Deck 3 Boat 4 Strut 5 Pulley 6 Winch 7 Rope 8 Tip 9 Ship side 10 Cradle 11 Roller 12 Cradle body 13 Arm 14 Auxiliary roller 19 Cradle chock 20 Base 21 Fender

Claims (1)

[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, each having a series of rollers, abutting on the boat side of the boat, and an auxiliary roller extending upward from the cradle bodies. An abutting arm, and in a boat davit that moves out of the deck along the pair of columns and outboard or outboard from the outboard by the rolling of these rollers and auxiliary rollers, abuts the boat ship side of the pair of cradle bodies. Side with a cradle chock, this cradle chock has a base fixed to the cradle body and And a fender having a hardness of 50 and a plurality of hollow rubber cushions having a substantially D-shaped cross section are arranged in parallel.