Stern fairlead mount

Abstract

The present invention provides a stern fairlead base, which is composed of a plurality of side panels of equal height and a top panel fixedly connected to the top edges of the plurality of side panels, wherein the entire bottom edge of each side panel is vertically mounted on the deck; the side panels are composed of two transverse side panels and at least two longitudinal side panels connected between the transverse side panels: the transverse side panels are trapezoidal steel plates, and the two ends of each longitudinal side panel are welded between the two transverse side panels, wherein a first longitudinal side panel is welded between the longitudinal rear sides of the two transverse side panels, and a second longitudinal side panel connecting the ends of the bottom edges of the two transverse side panels close to the side of the ship is welded between the two transverse side panels; at least one flat steel reinforcement rib is arranged between the two transverse side panels, the flat steel reinforcement rib is cross-crossed with the second longitudinal side panel and welded, and the upper surface of the flat steel reinforcement rib is welded to the upper surface of the top panel. The fairlead base provided by this patent can effectively improve stress distribution and ensure structural safety.

Description

Technical Field

[0001] The invention relates to a ship fairlead, in particular to a stern fairlead base. Background Art

[0002] Mooring equipment, such as fairleads, are usually required on the stern deck or platform of a ship. As the outer bottom line of the stern rises, the distance between the outer bottom plate and the deck continues to shrink, increasing the difficulty of structural layout. In particular, the space between the deck and the outer bottom at the side of the stern is particularly narrow. At this time, the fairlead base placed on it can only be aligned with the original strong member. Otherwise, it will be difficult to arrange the fairlead base support structure, which will cause stress concentration and damage the hull structure. On the other hand, the side line of the stern shrinks toward the middle of the ship. When the fairlead hole is arranged on the side of the stern, the cable is easy to contact and rub against the ship structure. In order to avoid this situation, the fairlead base needs to be extended outboard to make it flush with the maximum ship width. All of these increase the difficulty of the fairlead base design.

[0003] The current fairlead base is generally a closed box base, and the structure of the box base is as follows: Figure 1 As shown, the box base 1 is in the deck area. However, for the fairlead arranged on the stern side, its base needs to meet the following two requirements: on the one hand, it needs to be aligned with the strong member to prevent structural damage, and on the other hand, it needs to extend outboard to the maximum ship width to prevent the cable from contacting and rubbing with the hull structure. Therefore, there are significant defects when the closed box base is installed at the stern. Summary of the invention

[0004] The present invention provides a stern fairlead base, which is fixed at the side of the stern, and a fairlead is fixed on the upper surface of the stern fairlead base. The stern fairlead base is composed of a plurality of side panels of equal height and a top panel fixedly connected to the top edges of the plurality of side panels, and the entire bottom edge of each of the side panels is vertically mounted on the deck;

[0005] The side panels are composed of two transverse side panels and at least two longitudinal side panels connected between the transverse side panels:

[0006] The two transverse side plates are arranged parallel to each other and perpendicular to the sailing direction of the ship. The transverse side plates are trapezoidal steel plates. The top edge of the transverse side plate near the side extends horizontally to the outside of the side and is connected to the bottom edge through the bevel.

[0007] Both ends of each of the longitudinal side plates are welded between the two transverse side plates, wherein a first longitudinal side plate is welded between the longitudinal rear sides of the two transverse side plates away from the ship's side, and a second longitudinal side plate is welded between the two transverse side plates to connect the ends of the bottom edges of the two transverse side plates close to the ship's side;

[0008] At least one flat steel reinforcement rib having the same length as the top edge of the transverse side plate is arranged between the two transverse side plates. The flat steel reinforcement rib is cross-connected with the second longitudinal side plate and welded together, and the upper surface of the flat steel reinforcement rib is welded together with the upper surface of the top plate.

[0009] Furthermore, a partial bottom edge of the flat steel reinforcement rib is welded to the upper surface of the deck.

[0010] Furthermore, the height of the flat steel reinforcement rib is smaller than the height of the side plate.

[0011] Furthermore, arc welding is used to smoothly transition the connection between the transverse side panels and the longitudinal side panels.

[0012] Furthermore, the outer side edge of the top plate close to the side is flush with the side of the ship at the maximum ship width.

[0013] Furthermore, the first longitudinal side panel and the second longitudinal side panel are parallel and perpendicular to the two transverse side panels.

[0014] Furthermore, the spacing between the first longitudinal side plate and the second longitudinal side plate is not less than 100 mm.

[0015] Furthermore, the first longitudinal side plate is perpendicular to the two transverse side plates, the rear side of the second longitudinal side plate is arranged at the junction of the stern and the side of the ship, and the front side is connected to the side of the ship.

[0016] The fairlead base of the present invention can be considered to be composed of two parts. One is a closed box-type base composed of two transverse side plates and the first and second longitudinal side plates; the other is an open extension mechanism extending outboard is provided on one side of the box-type base, and the open extension mechanism extends the horizontal length of the top plate of the fairlead base to avoid friction between the cable of the fairlead and the hull. In order to ensure the strength of the top plate of the fairlead base, an inclined support mechanism is adopted at its bottom, and a plurality of flat steel reinforcing ribs cross-connected with the second longitudinal side are provided on the lower surface of the top plate, further improving the overall rigidity of the fairlead base. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 The present invention is a diagram of the installation position of the box-type fairlead base at the stern in the prior art;

[0019] Figure 2 The figure is a diagram of the installation position of the fairlead base of the present invention at the stern;

[0020] Figure 3 A three-dimensional diagram showing the internal structure of the fairlead base after the top plate of the fairlead base is hidden in one embodiment;

[0021] Figure 4 For the corresponding Figure 3 A schematic diagram of a structure in which two longitudinal side panels are arranged parallel to each other and perpendicular to the transverse side panels;

[0022] Figure 5 It is the front view of the transverse side panel, used to indicate the number of each side;

[0023] Figure 6 is a schematic diagram of another embodiment in which the second longitudinal side plate is not arranged parallel to the first longitudinal side plate;

[0024] Figure 7 It is shown that the front and rear ends of the second longitudinal side plate are respectively connected to the junction between the stern and the side of the ship and the side of the ship. DETAILED DESCRIPTION

[0025] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0026] In order to fully understand the present invention, detailed steps and detailed structures will be proposed in the following description to illustrate the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0027] Reference Figure 2 As shown, the present invention provides a stern fairlead base, wherein the stern fairlead base 10 is fixed at the side of the stern, a fairlead is fixed on the upper surface of the stern fairlead base 10, and the stern fairlead base 10 is composed of a plurality of side panels of equal height and a top panel 20 fixedly connected to the top edges 11d of the plurality of side panels, and the entire bottom edge of each side panel is vertically mounted on the deck.

[0028] Further reading Figure 3The side panels of the stern fairlead base 10 are composed of two transverse side panels 11 and at least two longitudinal side panels connected between the transverse side panels 11: the two transverse side panels 11 are arranged parallel to each other and perpendicular to the sailing direction of the ship, the transverse side panels 11 are trapezoidal steel plates, and one end of the top edge 11d of the transverse side panel 11 close to the side horizontally extends to the outside of the side and is connected to the bottom edge 11a through the oblique edge 11b, and the two ends of each longitudinal side panel are vertically welded between the two transverse side panels 11, and a first longitudinal side panel 12 is welded between the longitudinal rear sides 11c of the two transverse side panels 11 away from the side, and a second longitudinal side panel 13 connecting the ends of the bottom edges 11a of the two transverse side panels 11 close to the side is welded between the two transverse side panels 11. Among them, at least one flat steel reinforcement rib 14 with the same length as the top edge 11d of the horizontal side plate 11 is arranged between the two horizontal side plates 11, the flat steel reinforcement rib 14 is cross-connected with the second longitudinal side plate 13 and welded, and the upper surface of the flat steel reinforcement rib 14 is welded to the upper surface of the top plate 20.

[0029] The fairlead base provided by the present invention is upgraded and transformed based on the traditional box base. As can be seen from the figure, the fairlead base of the present invention can be regarded as composed of two parts. One is a box base 10-1 with strong rigidity, which is composed of two transverse side panels 11 and a first longitudinal side panel 12 and a second longitudinal side panel 13; the other is an open extension mechanism 10-2 extending to the side of the ship is provided on one side of the box base 10-1. The open extension mechanism 10-2 extends the horizontal length of the top plate 20 of the stern fairlead base to avoid friction between the cable of the fairlead and the hull. In order to ensure the strength of the top plate 20, an oblique support mechanism is adopted at its bottom, that is, two trapezoidal transverse side panels 11 are used to provide support for the outer side of the top plate 20. At the same time, a plurality of flat steel reinforcing ribs 14 cross-connected with the second longitudinal side panel 13 are provided on the lower surface of the top plate 20, which further improves the overall rigidity of the fairlead base. The openness of the open extension mechanism 10-2 means that no steel is connected between the oblique edges 11b of the two lateral side panels 11, that is, the bottom of the open extension mechanism 10-2 is hollow and open, thereby saving steel and improving the installation efficiency of the fairlead base.

[0030] Among them, each of the above-mentioned side panels can be made of flat steel to reduce processing costs.

[0031] In an optional embodiment of the present invention, the local bottom edge of the flat steel reinforcement rib 14 is welded to the upper surface of the deck, which means that the height of the flat steel reinforcement rib 14 can be the same as that of each side plate, so that the lower side edge of the flat steel reinforcement rib 14 located in the deck area is welded and fixed to the upper surface of the deck, which can play a role in improving strength. In order to reduce the difficulty of installation and save steel materials, the height of the flat steel reinforcement rib 14 is less than the height of the side plate. Although the bottom edge of the flat steel reinforcement rib 14 is not in contact with the deck, it can still achieve a certain effect of improving strength.

[0032] In an optional embodiment of the present invention, arc welding is used for smooth transition at the connection between the transverse side plate 11 and the longitudinal side plate, which can disperse the stress at the welding point. Excessive stress at local right-angle welding may cause fracture of the welding part.

[0033] In an optional embodiment of the present invention, the outer side edge of the top plate 20 close to the side is flush with the side of the ship at the maximum ship width.

[0034] In an optional embodiment of the present invention, the first longitudinal side plate 12 and the second longitudinal side plate 13 are parallel and perpendicular to the two transverse side plates 11, and the spacing between the first longitudinal side plate 12 and the second longitudinal side plate 13 is not less than 100 mm. Figure 4 In another optional embodiment, the first longitudinal side plate 12 is perpendicular to the two transverse side plates 11, the rear side of the second longitudinal side plate 13 is arranged at the junction of the stern and the side of the ship, and the front side is connected to the side of the ship, such as Figure 7 .

[0035] The fairlead base provided by this patent can effectively improve stress distribution and ensure structural safety, while avoiding the use of curved plates, reducing construction difficulty, reducing production costs, and improving economic benefits.

[0036] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A stern fairlead base, wherein the stern fairlead base (10) is fixed at the side of the stern, and a fairlead is fixed on the upper surface of the stern fairlead base (10), characterized in that: The stern fairlead base (10) is composed of a plurality of side panels of equal height and a top panel (20) fixedly connected to the top edges (11d) of the plurality of side panels, and the entire bottom edge of each of the side panels is vertically mounted on the deck; The side panels are composed of two transverse side panels (11) and at least two longitudinal side panels connected between the transverse side panels (11). The two transverse side plates (11) are arranged parallel to each other and perpendicular to the sailing direction of the ship. The transverse side plates (11) are trapezoidal steel plates. The top edge (11d) of the transverse side plate (11) extends horizontally to the outer side of the ship at one end close to the side and is connected to the bottom edge (11a) through the oblique edge (11b). Both ends of each of the longitudinal side plates are welded between the two transverse side plates (11), wherein a first longitudinal side plate (12) is welded between the longitudinal rear sides (11c) of the two transverse side plates (11) away from the ship's side, and a second longitudinal side plate (13) is welded between the two transverse side plates (11) to connect the ends of the bottom sides (11a) of the two transverse side plates close to the ship's side; At least one flat steel reinforcing rib (14) having the same length as the top edge (11d) of the transverse side plate (11) is arranged between the two transverse side plates (11); the flat steel reinforcing rib (14) and the second longitudinal side plate (13) are cross-connected and welded together; and the upper surface of the flat steel reinforcing rib (14) is welded together with the upper surface of the top plate (20).

2. The stern fairlead base according to claim 1, characterized in that: The local bottom edge of the flat steel reinforcement rib (14) is welded to the upper surface of the deck.

3. The stern fairlead base according to claim 1, characterized in that: The height of the flat steel reinforcing rib (14) is smaller than the height of the side plate.

4. The stern fairlead base according to claim 1, characterized in that: Arc welding is used to smoothly transition the connection between the transverse side plate (11) and the longitudinal side plate.

5. The stern fairlead base according to claim 1, characterized in that: The outer side edge of the top plate (20) close to the side is flush with the side of the ship at the maximum ship width.

6. The stern fairlead base according to claim 1, characterized in that: The first longitudinal side plate (12) and the second longitudinal side plate (13) are parallel and perpendicular to the two transverse side plates (11).

7. The stern fairlead base according to claim 6, characterized in that: The distance between the first longitudinal side plate (12) and the second longitudinal side plate (13) is not less than 100 mm.

8. The stern fairlead base according to claim 1, characterized in that: The first longitudinal side plate (12) is perpendicular to the two transverse side plates (11); the rear side of the second longitudinal side plate (13) is arranged at the junction of the stern and the side of the ship, and the front side is connected to the side of the ship.

Images