Smooth traveling transition mechanism for stern door and fixed ramp of roll-on-roll-off ship

Abstract

The invention discloses a smooth running transition mechanism for a stern door and a fixed ramp of a roll-on-roll-off ship, which comprises a transition mechanism body and a guide mechanism, one end of the transition mechanism body is rotatably connected with the stern door, and the other end of the transition mechanism body is lapped on the fixed ramp during use. The guide mechanism is fixed to the end, close to the stern door, of the fixed ramp, an inclined section is arranged on the lower end face of the transition mechanism body, the inclined section inclines downwards relative to the upper end face of the transition mechanism body from the end, close to one side of the fixed ramp, of the lower end face, and a sliding mechanism is arranged on the inclined section. The upper end face of the guide mechanism is an inclined face which inclines downwards relative to the horizontal plane from the end of the side, close to the stern door, of the fixed ramp, and the sliding mechanism slides on the guide mechanism. According to the smooth running transition mechanism for the stern door and the fixed ramp of the roll-on-roll-off ship, the requirements of smooth running, rolling storage and convenient maintenance can be met at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and particularly relates to a fairing driving transition mechanism for a ro-ro ship stern door and a fixed ramp. Background Art

[0002] The ro-ro passage system is the core system for loading and unloading goods on a ro-ro ship, which directly determines the operation efficiency of the ro-ro ship. The ro-ro passage system generally includes an outboard stern door (or side door), an in-ship fixed ramp (or movable ramp), etc. Due to the changes in the draft of the ro-ro ship and the tide level of the dock, the height difference between the main deck and the quay wall changes, resulting in the working angle of the stern door generally being + / -7 o . The angle of the fixed ramp connecting the main deck and the upper deck is generally 7-9 o . At present, a simple sliding cover plate is usually used for the transition between the conventional stern door and the fixed ramp. However, when the stern door is at a large working angle, the included angle between the stern door and the fixed ramp is in a V shape or an inverted V shape. The conventional sliding cover plate often has the following three problems: 1. The short sliding cover plate cannot achieve a fairing transition, resulting in uneven driving, which affects the loading and unloading efficiency and safety; 2. When the long sliding cover plate is stored, it needs to slide a long distance on the surface of the stern door or the fixed ramp when the stern door is closed. Since these surfaces have anti-slip measures for driving such as anti-slip sand or fishbone strips, it is difficult to slide; 3. The long sliding cover plate can achieve a fairing transition, but it is inconvenient for manual operation, and it is difficult to repair the stern door hinge covered by the cover plate. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a fairing driving transition mechanism for a ro-ro ship stern door and a fixed ramp, which can meet the requirements of fairing driving, rolling storage, and convenient maintenance at the same time.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A fairing driving transition mechanism for a ro-ro ship stern door and a fixed ramp includes a transition mechanism body and a guiding mechanism. One end of the transition mechanism body is rotatably connected to the stern door. During use, the other end is lapped on the fixed ramp. The guiding mechanism is fixed to one end of the fixed ramp close to the stern door. The lower end surface of the transition mechanism body is provided with an inclined section, and the inclined section inclines downward from the end of the lower end surface close to the fixed ramp side relative to the upper end surface of the transition mechanism body. The inclination angle of the inclined section is the same as the inclination angle of the fixed ramp. A sliding mechanism is arranged on the inclined section; the upper end surface of the guiding mechanism is an inclined surface that inclines downward from the end of the fixed ramp close to the stern door side relative to the horizontal plane, and the sliding mechanism slides on the guiding mechanism.

[0005] Further, the sliding mechanism includes a first sliding mechanism and a second sliding mechanism. The first sliding mechanism frictionally slides with the guiding mechanism, and the second sliding mechanism rolls with the guiding mechanism. The first sliding mechanism is located at the end of the inclined section close to the fixed ramp, and the second sliding mechanism is located within the length range of the inclined section.

[0006] Further, the first sliding mechanism is a semi-circular steel bar, and the arc surface of the semi-circular steel bar faces outward; the second sliding mechanism is a roller.

[0007] Further, the guiding mechanism includes a guiding plate, which includes a first inclined section and a second inclined section. The inclination angle of the first inclined section is smaller than that of the second inclined section. One side of the first inclined section away from the second inclined section is butted against the fixed ramp, and the connecting side of the first inclined section and the second inclined section extends to the outside of the hull.

[0008] Further, the inclination angle of the second inclined section is greater than that of the inclined section.

[0009] Further, a support mechanism is connected between the lower end surface of the second inclined section and the outer wall of the hull; reinforcing members are provided inside the connecting corner of the first inclined section and the second inclined section and within the included angle formed by the first inclined section and the outer wall of the hull.

[0010] Further, the length of the upper end surface of the transition mechanism body along the direction from the stern door to the fixed ramp is greater than the length of the lower end surface of the transition mechanism body in this direction.

[0011] Further, a lifting eye plate is provided on the upper end surface of the transition mechanism body close to the fixed ramp.

[0012] Further, the transition mechanism body is rotatably connected to the stern door through a connecting shaft.

[0013] Compared with the conventional sliding cover plate, the fairing driving transition mechanism between the stern door and the fixed ramp of the roll-on / roll-off ship of the present invention is lengthened, which can effectively fill the V-shaped or inverted V-shaped corner area between the stern door and the fixed ramp, realize fairing driving, improve the loading and unloading efficiency and safety; the transition mechanism can roll smoothly on the surface of the fixed ramp to realize convenient storage; the transition mechanism can be easily lifted manually, which is convenient for overhauling the stern door hinge shielded by the transition mechanism. Description of the Drawings

[0014] Figure 1 Fig. is the working state of the fairing driving transition mechanism between the stern door and the fixed ramp of the roll-on / roll-off ship of the present invention when the working angle of the stern door is -7°.

[0015] Figure 2 For Figure 1Schematic enlarged view of part A.

[0016] Figure 3 It is the working state of the fairing driving transition mechanism between the stern door and the fixed ramp of the ro-ro ship according to the present invention when the working angle of the stern door is +7°.

[0017] Figure 4 It is Figure 3 Schematic enlarged view of part B.

[0018] Figure 5 It is the working state of the fairing driving transition mechanism between the stern door and the fixed ramp of the ro-ro ship according to the present invention when the stern door is in the stowed state.

[0019] Figure 6 It is Figure 5 Schematic enlarged view of part C.

[0020] Figure 7 It is the lifting state of the fairing driving transition mechanism between the stern door and the fixed ramp of the ro-ro ship according to the present invention when the stern door needs to be overhauled.

[0021] Wherein, 1 - transition mechanism body; 2 - connecting shaft; 3 - semi-circular steel; 4 - roller; 5 - guiding mechanism; 6 - eye plate; 7 - stern door; 8 - fixed ramp, 101 - inclined section, 501 - guiding plate, 502 - supporting mechanism, 503 - strengthening member, 5011 - first inclined section, 5012 - second inclined section. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] As shown in Figure 7 shown, a fairing driving transition mechanism between the stern door and the fixed ramp of a ro-ro ship includes a transition mechanism body 1 and a guiding mechanism 5. One end of the transition mechanism body 1 is rotatably connected to the stern door 7. During use, the other end is lapped on the fixed ramp 8. The guiding mechanism 5 is fixed to one end of the fixed ramp 8 close to the stern door 7. An inclined section 101 is provided on the lower end surface of the transition mechanism body 1. The inclined section 101 slopes downward from the end of the lower end surface close to the fixed ramp 8 side relative to the upper end surface of its transition mechanism body 1. The inclination angle of the inclined section 101 is the same as the inclination angle of the fixed ramp 8. A sliding mechanism is provided on the inclined section 101. The upper end surface of the guiding mechanism 5 is an inclined surface that slopes downward from the end of the fixed ramp 8 close to the stern door 7 side relative to the horizontal plane. The sliding mechanism slides on the guiding mechanism 5.

[0024] The angle of the fixed ramp 8 is determined according to the floor height where the fixed ramp 8 is located and the length of the fixed ramp. Generally, it does not exceed 7°.

[0025] In some embodiments, the transition mechanism body 1 is rotatably connected to the stern door 7 through a connecting shaft 2. Of course, in other embodiments, the transition mechanism body 1 can also be rotatably connected to the stern door 7 in other ways, such as hinges and pin shafts.

[0026] Furthermore, the sliding mechanism includes a first sliding mechanism and a second sliding mechanism. The first sliding mechanism frictionally slides with the guiding mechanism 5, and the second sliding mechanism rolls and slides with the guiding mechanism 5. The first sliding mechanism is located at the end of the inclined section 101 close to the fixed ramp 8, and the second sliding mechanism is located within the length range of the inclined section 101.

[0027] In some embodiments, the first sliding mechanism is a semi-circular steel 3, and the arc surface of the semi-circular steel 3 faces outward; the second sliding mechanism is a roller 4. Among them, the installation positions of the roller 4 and the semi-circular steel 3 are determined such that within the working range of the stern door at + / -7°, the roller 4 should be near the guiding mechanism 5 but will not move onto the guiding mechanism 5, while the semi-circular steel 3 should work on the guiding mechanism 3.

[0028] Furthermore, the guiding mechanism 5 includes a guiding plate 501. The guiding plate 501 includes a first inclined section 5011 and a second inclined section 5012. The inclination angle of the first inclined section 5011 is smaller than that of the second inclined section 5012. The side of the first inclined section 5011 away from the second inclined section 5012 is butted against the fixed ramp 8, and the connecting side of the first inclined section 5011 and the second inclined section 5012 extends to the outside of the hull.

[0029] Furthermore, the inclination angle of the second inclined section 5012 is greater than that of the inclined section 101.

[0030] Furthermore, a support mechanism 502 is connected between the lower end surface of the second inclined section 5012 and the outer wall of the hull; reinforcing members 503 are provided both inside the connecting corner of the first inclined section 5011 and the second inclined section 5012 and within the included angle formed by the first inclined section 5011 and the outer wall of the hull.

[0031] Furthermore, the length of the upper end surface of the transition mechanism body 1 in the direction from the stern door 7 to the fixed ramp 8 is greater than the length of the lower end surface of the transition mechanism body 1 in this direction.

[0032] Furthermore, a lifting eye plate 6 is provided on the upper end surface of the transition mechanism body 1 near the fixed ramp 8.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fairing driving transition mechanism for a ro-ro ship stern door and a fixed ramp, characterized in that It includes a transition mechanism body and a guiding mechanism. One end of the transition mechanism body is rotatably connected to the stern door. During use, the other end is lapped on the fixed ramp. The guiding mechanism is fixed to one end of the fixed ramp close to the stern door. The lower end surface of the transition mechanism body is provided with an inclined section. The inclined section inclines downward from the end on the side close to the fixed ramp of the lower end surface relative to the upper end surface of the transition mechanism body. The inclination angle of the inclined section is the same as that of the fixed ramp. A sliding mechanism is provided on the inclined section; the upper end surface of the guiding mechanism is an inclined surface that inclines downward from the end on the side close to the stern door of the fixed ramp relative to the horizontal plane. The sliding mechanism slides on the guiding mechanism.

2. The fairing driving transition mechanism for the stern door and fixed ramp of a ro-ro ship according to claim 1, wherein The sliding mechanism includes a first sliding mechanism and a second sliding mechanism. The first sliding mechanism frictionally slides with the guiding mechanism, and the second sliding mechanism rolls and slides with the guiding mechanism. The first sliding mechanism is located at the end of the inclined section close to the fixed ramp, and the second sliding mechanism is located within the length range of the inclined section.

3. The fairing driving transition mechanism for the ro-ro ship stern door and the fixed ramp according to claim 2, wherein, The first sliding mechanism is a semi-circular steel bar, and the arc surface of the semi-circular steel bar faces outward; the second sliding mechanism is a roller.

4. The fairing driving transition mechanism for the ro-ro ship stern door and the fixed ramp according to claim 3, characterized in that, The guiding mechanism includes a guiding plate. The guiding plate includes a first inclined section and a second inclined section. The inclination angle of the first inclined section is smaller than that of the second inclined section. The side of the first inclined section far from the second inclined section is docked with the fixed ramp. The connection side of the first inclined section and the second inclined section extends to the outside of the hull.

5. The fairing driving transition mechanism of the ro-ro ship stern door and the fixed ramp according to claim 4, characterized in that, The inclination angle of the second inclined section is greater than that of the inclined section.

6. The fairing driving transition mechanism for the ro-ro ship stern door and the fixed ramp according to claim 5, characterized in that, A support mechanism is connected between the lower end surface of the second inclined section and the outer wall of the hull; reinforcing members are provided inside the connection corner between the first inclined section and the second inclined section and within the included angle formed by the first inclined section and the outer wall of the hull.

7. The fairing driving transition mechanism for the stern door and fixed ramp of a ro-ro ship according to claim 6, characterized in that, The length of the upper end surface of the transition mechanism body in the direction from the stern door to the fixed ramp is greater than the length of the lower end surface of the transition mechanism body in this direction.

8. The fairing driving transition mechanism for the stern door and fixed ramp of a roll-on / roll-off ship according to claim 1, characterized in that, A lifting eye plate is provided on the side of the upper end surface of the transition mechanism body close to the fixed ramp.

9. The fairing driving transition mechanism between the stern door and the fixed ramp of the ro-ro ship according to claim 1, wherein, The transition mechanism body is rotatably connected to the stern door through a connecting shaft.

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