Mooring fairlead structure for ships

Abstract

The present invention relates to the technical field of ship mooring, and discloses a fairlead structure for ship mooring, including a bottom plate. The upper end surface of the bottom plate is connected with two rotating cylinders, and the two rotating cylinders are respectively located at the front and rear ends of the upper end surface of the bottom plate. The upper end surface of the bottom plate is connected with two upright columns, and each of the two upright columns is connected with a limiting mechanism; the upper end surface of the bottom plate is connected with a speed reduction mechanism; a compensation mechanism is arranged in the speed reduction mechanism. The fairlead structure for ship mooring is provided to overcome the defects that the existing fairlead does not have a speed reduction function, the release speed of the cable becomes faster and faster, and the too fast release speed is likely to cause safety accidents, while using a drum motor to limit the release speed will cause the motor to be overloaded.

Description

Technical Field

[0001] The present invention relates to the field of ship mooring, and specifically to a fairlead structure for ship mooring. Background Art

[0002] A fairlead, also known as a "mooring clamp" or "mooring hook", is a mooring appliance used to guide a cable through or change its direction to protect the cable from abrasion. It is generally a metal crab-claw shaped object, and some are provided with a round post or a roller between the two jaws and are installed at the edge of the ship's deck or the dock edge. It is used to lead the cable out from a certain location at the ship's edge or the dock edge.

[0003] Existing fairleads generally only have a guiding function and do not have a decelerating function. During the process of releasing the cable, due to the weight of the ship's anchor itself dropping, the release speed will become faster and faster. An overly fast release speed is likely to cause safety accidents. Using a winch motor to limit the release speed will result in an excessive load on the motor. Therefore, a fairlead structure for ship mooring is proposed to address the above problems. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defect that existing fairleads do not have a decelerating function, the cable release speed becomes faster and faster, an overly fast release speed is likely to cause safety accidents, and using a winch motor to limit the release speed will result in an excessive load on the motor, and to provide a fairlead structure for ship mooring.

[0005] The technical solution to achieve the above purpose is: a fairlead structure for ship mooring, including a bottom plate, the upper end surface of the bottom plate is connected with two rotating cylinders, the two rotating cylinders are respectively located at the front and rear ends of the upper end surface of the bottom plate, the upper end surface of the bottom plate is connected with two upright columns, and each of the two upright columns is connected with a limiting mechanism; the upper end surface of the bottom plate is connected with a decelerating mechanism; a compensating mechanism is arranged inside the decelerating mechanism.

[0006] Preferably, the limiting mechanism includes a limiting member, the limiting member is rotatably connected to the upright column; a fixed disk is connected to the upright column, the fixed disk is located below the limiting member, a first semi-circular chute is opened on the upper end surface of the fixed disk, and a plurality of first balls are arranged in the first semi-circular chute; a second semi-circular chute is opened on the lower end surface of the limiting member, and the plurality of first balls are in contact with the second semi-circular chute.

[0007] Preferably, the speed reduction mechanism includes a fixing plate connected to the bottom plate. At both ends of the upper end surface of the fixing plate, a second fixing seat is connected respectively. A rotating rod is connected between the two second fixing seats. Opposite threads are provided at both ends of the rotating rod. The right end of the rotating rod is connected to a first motor. On both sides of the upper end surface of the bottom plate, a slide rail is connected respectively; at the upper ends of the two semi-circular clamping members, two first fixing members are connected respectively. At the lower ends of the two semi-circular clamping members, two second fixing members are connected respectively; at the middle parts of the two second fixing members, a first lead screw nut is connected respectively. The two first lead screw nuts are respectively connected to the opposite threads provided at both ends of the rotating rod; at both sides of the lower end surface of the two second fixing members, a U-shaped sliding groove is opened respectively. The U-shaped sliding groove is slidably connected to the slide rail;

[0008] On the opposite surfaces of the two first fixing members, two T-shaped holes are respectively opened outwards. At the left and right ends of the upper end surface of the bottom plate, a support column is connected respectively. Two guide rods respectively pass through the two T-shaped holes on the two first fixing members. Both ends of the two guide rods are connected to the two support columns. A first spring is sleeved on a section of the two guide rods between the two first fixing members; A speed reduction component is connected in each of the two semi-circular clamping members.

[0009] Preferably, the speed reduction component includes a semi-circular friction plate located inside the semi-circular clamping member. A T-shaped rod passes through the semi-circular clamping member and is connected to the back surface of the semi-circular friction plate. A second spring is sleeved on one end of the T-shaped rod close to the semi-circular friction plate.

[0010] Preferably, the compensation mechanism includes a compensation plate located between the two semi-circular clamping members. At the lower ends of the two semi-circular clamping members, a placement groove is opened respectively; The lower end of the compensation plate is connected to a U-shaped lifting rod. The lower end of the U-shaped lifting rod is located on the lower end surface of the bottom plate. At both sides of the lower end of the U-shaped lifting rod, a first shaft joint seat is connected respectively. Each of the two first shaft joint seats is connected to a connecting rod. The other end of the connecting rod is connected to a second shaft joint seat. The second shaft joint seat is connected to a second lead screw nut. The second lead screw nut is connected to a lead screw. The lead screw is connected to a second motor. A plurality of second balls are movably connected to the upper end surface of the compensation plate.

[0011] Preferably, two grooves are opened on the lower end surface of the bottom plate. The two lead screws are respectively located in the corresponding grooves.

[0012] Preferably, at both ends of the rotating cylinder, a first fixing seat is respectively and movably connected. The first fixing seat is connected to the upper end surface of the bottom plate.

[0013] Preferably, both ends of the first spring are located in the T-shaped holes.

[0014] The beneficial effects of the present invention are as follows: By providing two semi-circular clamping members, two semi-circular friction plates, and opposite threads are provided at both ends of the rotating rod. When the first motor rotates, the two semi-circular clamping members move closer to each other, causing the semi-circular friction plates to squeeze the cable, thereby achieving the purpose of slowing down the cable release speed, avoiding the problem of using a drum motor to limit the release speed, and also improving the safety factor.

[0015] By providing a compensating plate, a U-shaped lifting rod, two second lead screw nuts, and two lead screws, when the two semi-circular friction plates do not decelerate the cable, the U-shaped lifting rod moves upward, causing the compensating plate to enter the gap between the lower ends of the two semi-circular friction plates, so that the cable will not fall into the gap between the two semi-circular friction plates and get stuck. When the U-shaped lifting rod descends, the compensating plate enters the gap between the lower ends of the two semi-circular clamping members. When the two semi-circular clamping members move closer to the middle, both ends of the compensating plate enter the placement grooves opened at the lower ends of the semi-circular clamping members, and the compensating plate does not affect the approach of the two semi-circular clamping members. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view of the present invention;

[0017] Figure 2 is the bottom view of the present invention;

[0018] Figure 3 is the front view of the deceleration mechanism of the present invention;

[0019] Figure 4 is the side view of the deceleration mechanism of the present invention;

[0020] Figure 5 is the cross-sectional view of the limiting mechanism of the present invention;

[0021] Figure 6 is the detailed view of the position of the first semi-circular chute of the present invention;

[0022] Figure 7 is the detailed view of the limiting member of the present invention;

[0023] Figure 8 is Figure 4 the enlarged view at A in

[0024] Figure 9 is Figure 2 the enlarged view at B in

[0025] In the figure: 1, bottom plate; 2, rotating cylinder; 3, upright column; 4, first fixed seat; 5, limiting member; 6, second semi-circular chute; 7, fixed disk; 8, first semi-circular chute; 9, first ball; 10, fixed plate; 11, second fixed seat; 12, first motor; 13, support column; 14, guiding rod; 15, T-shaped rod; 16, semi-circular clamping member; 17, second spring; 18, semi-circular friction plate; 19, first spring; 20, first lead screw nut; 21, second fixing member; 22, rotating rod; 23, slide rail; 24, first fixing member; 25, U-shaped chute; 26, T-shaped hole; 27, filling plate; 28, placing groove; 29, second ball; 30, U-shaped lifting rod; 31, first shaft connecting seat; 32, connecting rod; 33, second shaft connecting seat; 34, second motor; 35, second lead screw nut; 36, lead screw; 37, groove. Detailed implementation manners

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] As Figures 1-9 shown, the structure of a mooring fairlead for a ship includes a bottom plate 1. The upper end surface of the bottom plate 1 is connected with two rotating cylinders 2, and the two rotating cylinders 2 are respectively located at the front and rear ends of the upper end surface of the bottom plate 1. The upper end surface of the bottom plate 1 is connected with two upright columns 3, and each of the two upright columns 3 is connected with a limiting mechanism; the upper end surface of the bottom plate 1 is connected with a speed reduction mechanism; a filling mechanism is arranged in the speed reduction mechanism. The two ends of the rotating cylinder 2 are respectively and movably connected with a first fixed seat 4, and the first fixed seat 4 is connected to the upper end surface of the bottom plate 1. The cable passes through the speed reduction mechanism and the limiting mechanism, and the speed reduction mechanism can slow down the release speed of the cable.

[0029] Specifically, the limiting mechanism includes a limiting member 5 which is rotatably connected to the column 3; a fixed disk 7 is connected to the column 3 and is located below the limiting member 5. A first semi-circular chute 8 is formed in the upper end surface of the fixed disk 7, and a plurality of first balls 9 are arranged in the first semi-circular chute 8; a second semi-circular chute 6 is formed in the lower end surface of the limiting member 5, and the plurality of first balls 9 are in contact with the second semi-circular chute 6. Arranging a plurality of first balls 9 can make the limiting member 5 rotate more smoothly on the fixed disk 7.

[0030] Specifically, the deceleration mechanism includes a fixing plate 10 which is connected to the bottom plate 1. At both ends of the upper end surface of the fixing plate 10, a second fixing seat 11 is connected respectively. A rotating rod 22 is connected between the two second fixing seats 11. Opposite threads are arranged at both ends of the rotating rod 22. The right end of the rotating rod 22 is connected to a first motor 12. On both sides of the upper end surface of the bottom plate 1, a slide rail 23 is connected respectively; at the upper ends of the two semi-circular clamping members 16, two first fixing members 24 are connected respectively, and at the lower ends of the two semi-circular clamping members 16, two second fixing members 21 are connected respectively; in the middle of the two second fixing members 21, a first lead screw nut 20 is connected respectively, and the two first lead screw nuts 20 are respectively connected to the opposite threads arranged at both ends of the rotating rod 22; on both sides of the lower end surface of the two second fixing members 21, a U-shaped chute 25 is formed respectively, and the U-shaped chute 25 is slidably connected to the slide rail 23; on the opposite surfaces of the two first fixing members 24, two T-shaped holes 26 are formed respectively and extend outwards. On the left and right ends of the upper end surface of the bottom plate 1, a support column 13 is connected respectively. Two guide rods 14 pass through the two T-shaped holes 26 on the two first fixing members 24 respectively, and both ends of the two guide rods 14 are connected to the two support columns 13. A first spring 19 is sleeved on a section of the two guide rods 14 located between the two first fixing members 24; a deceleration component is connected in each of the two semi-circular clamping members 16. Both ends of the first spring 19 are located in the T-shaped holes 26. The deceleration component includes a semi-circular friction plate 18 which is located inside the semi-circular clamping member 16. A T-shaped rod 15 passes through the semi-circular clamping member 16 and is connected to the back surface of the semi-circular friction plate 18. A second spring 17 is sleeved on the end of the T-shaped rod 15 close to the semi-circular friction plate 18. When deceleration is required, the first motor 12 is started. The first motor 12 rotates forward to make the two second fixing members 21 move closer to each other, so that the two semi-circular clamping members 16 move closer to each other, and the two semi-circular friction plates 18 squeeze the cable, achieving the purpose of slowing down the release speed of the cable; when the first motor 12 rotates in reverse, the two semi-circular clamping members 16 move towards both ends, and the two semi-circular friction plates 18 leave the cable.

[0031] Specifically, the filling mechanism includes a filling plate 27 which is located between two semi-circular clamping members 16. A placement groove 28 is formed at the lower end of each of the two semi-circular clamping members 16. The lower end of the filling plate 27 is connected to a U-shaped lifting rod 30. The lower end of the U-shaped lifting rod 30 is located on the lower end face of the bottom plate 1. A first shaft joint 31 is connected to each side of the lower end of the U-shaped lifting rod 30. Each of the two first shaft joints 31 is connected to a connecting rod 32 respectively. The other end of the connecting rod 32 is connected to a second shaft joint 33. The second shaft joint 33 is connected to a second lead screw nut 35. The second lead screw nut 35 is connected to a lead screw 36. The lead screw 36 is connected to a second motor 34. A plurality of second balls 29 are movably connected to the upper end face of the filling plate 27. Two grooves 37 are formed on the lower end face of the bottom plate 1. The two lead screws 36 are respectively located in the corresponding grooves 37. When the two semi-circular friction plates 18 do not decelerate the cable, when the two semi-circular clamping members 16 are separated, the two second motors 34 are started. The second motors 34 rotate forward to make the lead screws 36 rotate, so that the two second lead screw nuts 35 on the two lead screws 36 move towards both ends respectively, thereby pushing the U-shaped lifting rod 30 to move upward, so that the filling plate 27 enters the gap between the lower ends of the two semi-circular friction plates 18, so that the cable will not fall into the gap between the two semi-circular friction plates 18 and get stuck. When the two semi-circular friction plates 18 are about to decelerate the cable, the two second motors 34 are started. The second motors 34 rotate in reverse, so that the two second lead screw nuts 35 on the two lead screws 36 move towards the middle, so that the U-shaped lifting rod 30 descends, so that the filling plate 27 enters the gap between the lower ends of the two semi-circular clamping members 16. When the two semi-circular clamping members 16 move closer to the middle, the two ends of the filling plate 27 enter the placement grooves 28 formed at the lower ends of the semi-circular clamping members 16, and the filling plate 27 will not affect the closing of the two semi-circular clamping members 16.

[0032] Working principle: When deceleration is required, the first motor 12 is started. The forward rotation of the first motor 12 causes the two second fixing members 21 to move closer to each other, making the two semi-circular clamping members 16 move closer, and making the two semi-circular friction plates 18 clamp the cable, achieving the purpose of slowing down the cable release speed; when the first motor 12 rotates in reverse, the two semi-circular clamping members 16 move towards both ends, causing the two semi-circular friction plates 18 to leave the cable. When the two semi-circular friction plates 18 do not decelerate the cable and the two semi-circular clamping members 16 separate, the two second motors 34 are started. The forward rotation of the second motor 34 causes the lead screws 36 to rotate, making the two second lead screw nuts 35 on the two lead screws 36 move towards both ends respectively, and then pushing the U-shaped lifting rod 30 to move upward, so that the compensation plate 27 enters the gap between the lower ends of the two semi-circular friction plates 18, preventing the cable from falling into and getting stuck in the gap between the two semi-circular friction plates 18. When the two semi-circular friction plates 18 are to decelerate the cable, the two second motors 34 are started, and the second motor 34 rotates in reverse, making the two second lead screw nuts 35 on the two lead screws 36 move towards the middle, causing the U-shaped lifting rod 30 to descend, so that the compensation plate 27 enters the gap between the lower ends of the two semi-circular clamping members 16. When the two semi-circular clamping members 16 move closer to the middle, the two ends of the compensation plate 27 enter the placement grooves 28 opened at the lower ends of the semi-circular clamping members 16, and the compensation plate 27 does not affect the closing of the two semi-circular clamping members 16.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. Structure of a fairlead for mooring a ship, characterized in that It includes a bottom plate (1), and the upper end surface of the bottom plate (1) is connected with two rotating cylinders (2). The two rotating cylinders (2) are respectively located at the front and rear ends of the upper end surface of the bottom plate (1). The upper end surface of the bottom plate (1) is connected with two upright columns (3), and a limiting mechanism is respectively connected to the two upright columns (3); a speed reduction mechanism is connected to the upper end surface of the bottom plate (1); a compensation mechanism is arranged in the speed reduction mechanism; The compensation mechanism includes a compensation plate (27). The compensation plate (27) is located between two semi-circular clamping members (16), and a placement groove (28) is respectively opened at the lower end of each of the two semi-circular clamping members (16); the lower end of the compensation plate (27) is connected with a U-shaped lifting rod (30). The lower end of the U-shaped lifting rod (30) is located on the lower end surface of the bottom plate (1). A first shaft joint seat (31) is respectively connected to both sides of the lower end of the U-shaped lifting rod (30). Each of the two first shaft joint seats (31) is respectively connected with a connecting rod (32). The other end of the connecting rod (32) is connected with a second shaft joint seat (33). The second shaft joint seat (33) is connected to a second lead screw nut (35). The second lead screw nut (35) is connected to a lead screw (36). The lead screw (36) is connected with a second motor (34). A plurality of second balls (29) are movably connected to the upper end surface of the compensation plate (27).

2. The structure of the fairlead for ship mooring according to claim 1, characterized in that, The limiting mechanism includes a limiting member (5). The limiting member (5) is rotatably connected to the upright column (3); a fixed disk (7) is connected to the upright column (3). The fixed disk (7) is located below the limiting member (5). A first semi-circular sliding groove (8) is opened on the upper end surface of the fixed disk (7). A plurality of first balls (9) are arranged in the first semi-circular sliding groove (8); a second semi-circular sliding groove (6) is opened on the lower end surface of the limiting member (5). The plurality of first balls (9) are in contact with the second semi-circular sliding groove (6).

3. The structure of the fairlead for ship mooring according to claim 1, characterized in that, The speed reduction mechanism includes a fixing plate (10). The fixing plate (10) is connected to the bottom plate (1). A second fixing seat (11) is respectively connected to both ends of the upper end surface of the fixing plate (10). A rotating rod (22) is connected between the two second fixing seats (11). Opposite threads are respectively arranged at both ends of the rotating rod (22). The right end of the rotating rod (22) is connected with a first motor (12). A slide rail (23) is respectively connected to both sides of the upper end surface of the bottom plate (1); the upper ends of the two semi-circular clamping members (16) are respectively connected with two first fixing members (24). The lower ends of the two semi-circular clamping members (16) are respectively connected with two second fixing members (21); a first lead screw nut (20) is respectively connected to the middle of each of the two second fixing members (21). The two first lead screw nuts (20) are respectively connected to the opposite threads arranged at both ends of the rotating rod (22); a U-shaped sliding groove (25) is respectively opened at both sides of the lower end surface of each of the two second fixing members (21). The U-shaped sliding groove (25) is slidably connected with the slide rail (23); Two opposite faces of the two first fixing members (24) are respectively provided with two T-shaped holes (26) opening outwards. At the left and right ends of the upper end face of the bottom plate (1), a support column (13) is connected respectively. Two guide rods (14) respectively pass through the two T-shaped holes (26) on the two first fixing members (24). Two ends of the two guide rods (14) are connected to the two support columns (13). A section of the two guide rods (14) located between the two first fixing members (24) is sleeved with a first spring (19); A deceleration assembly is connected in each of the two semi-circular clamping members (16).

4. The structure of the fairlead for ship mooring according to claim 3, characterized in that, The deceleration assembly includes a semi-circular friction plate (18). The semi-circular friction plate (18) is located inside the semi-circular clamping member (16). A T-shaped rod (15) passes through the semi-circular clamping member (16) and is connected to the back surface of the semi-circular friction plate (18). A second spring (17) is sleeved at one end of the T-shaped rod (15) close to the semi-circular friction plate (18).

5. The structure of the fairlead for ship mooring according to claim 1, characterized in that, Two grooves (37) are formed in the lower end face of the bottom plate (1). The two lead screws (36) are respectively located in the corresponding grooves (37).

6. The structure of the fairlead for ship mooring according to claim 1, characterized in that, Two ends of the rotating cylinder (2) are respectively and movably connected with a first fixing seat (4). The first fixing seat (4) is connected to the upper end face of the bottom plate (1).

7. The structure of the fairlead for ship mooring according to claim 3, characterized in that, Two ends of the first spring (19) are located in the T-shaped holes (26).

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