Combined movable ramp for ship

Abstract

The invention provides a ship combined movable ramp which comprises two combined sections arranged in a staggered mode in the horizontal direction and the vertical direction, the adjacent ends of the two combined sections are butt joint ends, and the opposite ends of the butt joint ends are rotationally connected with a ship structure so that the ship structure can be rotationally arranged in the vertical direction. Supporting assemblies are oppositely arranged on the front sides and the rear sides of the butt joint ends of the two combination sections, the upper end faces of the supporting assemblies and the reverse side of the upper-layer vehicle deck are located on the same horizontal plane, and a plurality of movable ramp supporting points capable of stretching out and drawing back along the end faces parallel to the butt joint ends of the combination sections are arranged on the supporting assemblies at intervals from bottom to top. At least one jacking device is oppositely arranged on the front side and the rear side, perpendicular to the butt joint end direction, of at least one combination section, and lifting assemblies of the jacking devices are in sliding connection with the butt joint side of the lower movable ramp. The combined movable ramp for the ship has better stability in structure, and meanwhile, the operation workload and the operation time of the movable ramp can be reduced.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding technology, and specifically relates to a ship-mounted modular ramp. Background Technology

[0002] In recent years, with the rapid development of economy and trade, freight transportation has become increasingly globalized. Simultaneously, the import and export trade of vehicles has also been increasing. Short-distance vehicle transport can be carried by trucks, while long-distance transport mainly relies on large roll-on / roll-off (Ro-Ro) ships. Vehicles are driven into different decks via ramps inside the Ro-Ro ship for securing and transport. These ramps can be categorized as fixed ramps and movable ramps.

[0003] Movable ramps are now widely used in roll-on / roll-off (Ro-Ro) ships due to their convenience. Existing ramps are typically of the hoist-lift type or hydraulic cylinder-lift type. Because the ramps in large Ro-Ro ships are generally quite large, some reaching tens of meters in length, their structure becomes simplistic, while also occupying a significant portion of the ship's cargo hold space. In practical applications, the methods for adjusting the ramps are limited, and the ramp deployment and retraction process is relatively slow, thus failing to improve the efficiency of loading and unloading vehicles. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a ship-mounted modular ramp that offers structural stability while reducing operational workload and time.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A modular movable ramp for ships is provided between two adjacent vehicle decks. It comprises two modular sections staggered both horizontally and vertically. The adjacent ends of the two modular sections form a docking end, and the opposite ends of the docking ends are rotatably connected to the ship's structure, allowing it to rotate vertically. Support assemblies are provided on the front and rear sides of the docking ends of the two modular sections, with the upper surface of each support assembly aligned with the opposite side of the upper vehicle deck. Multiple movable ramp support points, extendable and retractable along the end faces of the docking ends of the modular sections, are spaced from bottom to top on each support assembly. At least one set of lifting devices is provided on the front and rear sides of at least one modular section, perpendicular to its docking end. The lifting components of the lifting devices are slidably connected to the docking side of the lower movable ramp.

[0006] Furthermore, the two adjacent vehicle decks are the upper vehicle deck and the lower vehicle deck, respectively, and horizontally staggered notches are provided on the upper vehicle deck and the lower vehicle deck; the two combined sections are the upper movable ramp and the lower movable ramp, respectively, which are embedded in the notches of the upper vehicle deck and the lower vehicle deck, and their docking ends are rotatably connected to the upper vehicle deck and the lower vehicle deck, respectively.

[0007] Furthermore, the lifting device is located on both the front and rear sides of the lower movable ramp; the combined movable ramp also includes at least two cable assemblies, and the upper movable ramp and the lower movable ramp are vertically connected by the two cable assemblies.

[0008] Furthermore, the support assembly includes a support column and a hydraulic device. The lower end of the support column is fixed to the lower vehicle deck. The support column has a hollow structure. There are three support points on the support column: a bottom support point, a middle support point, and a top support point. The upper surface of the top support point is on the same horizontal plane as the surface of the upper vehicle deck, and the upper surface of the bottom support point is on the same horizontal plane as the opposite surface of the lower vehicle deck. The hydraulic device is connected to the middle support point and the top support point, driving them to extend and retract within and outside the hollow cavity of the support column.

[0009] Furthermore, there are two lifting devices, which are arranged opposite to each other on the front and rear sides of the docking end of the two combined sections; the lifting device includes a telescopic rod, an electromagnetic coil is fixed on the lower fixed section of the telescopic rod, the electromagnetic coil is connected to a power source, and an electromagnet ring is fixed on the telescopic section of the telescopic rod; the upper part of the telescopic section is slidably connected to the lower movable ramp along the front and rear side extension direction of the lower movable ramp through a connecting assembly.

[0010] Furthermore, the lifting assembly also includes a Z-shaped folded hook. A sleeve is fixed on the front and rear sides of the lower movable ramp near the docking end. A lifting hole is provided on the upper part of the telescopic section of the telescopic rod. The upper crossbar of the Z-shaped folded hook is inserted into the lifting hole. A sliding groove is provided on the side wall of the sleeve. The upper crossbar of the Z-shaped folded hook extends into the sliding groove and is slidably connected with the sleeve.

[0011] Furthermore, the lifting assembly also includes a warning light bulb, which forms a closed circuit with the electromagnet ring via wires, allowing it to rise and fall with the electromagnet ring. Electromagnetic induction generates an induced current, causing the bulb to flash; the stronger the magnetism, the brighter the bulb, serving as a warning.

[0012] Furthermore, the cable assembly includes a pulley, a cable, and two hooks. The pulley is fixed to the upper part of the side of the support column near the combined movable ramp. The two hooks are respectively fixed to the lower and upper ends of the upper and lower movable ramps. The cable passes around the pulley and is connected to the two hooks at both ends.

[0013] Furthermore, the cable assembly also includes two fine-tuning devices, which are respectively fixed on both sides of the cable length direction.

[0014] The ship-mounted modular ramp of this invention, when needed, activates by pressing a switch. The telescopic device on the lower deck lifts the lower half of the ramp, while the upper half descends under the action of the cable system. Finally, the two sections connect at the central support point of the support device, forming a single unit for vehicle passage. Furthermore, this modular ramp is installed in sections, making each section lighter than a single, complete ramp, thus reducing installation difficulty. The operation is simple and straightforward, saving operators' workload. Additionally, the simultaneous operation of both upper and lower ramp sections results in a shorter deployment and retraction time compared to a single, conventional ramp, thus improving work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the ship-mounted movable ramp described in this invention.

[0016] Figure 2 This is a right view of the support device described in this invention.

[0017] Figure 3 This is a rear view of the support device described in this invention.

[0018] Figure 4 This is a front view of the telescopic rod described in this invention.

[0019] Figure 5 This is a right view of the telescopic rod described in this invention.

[0020] Figure 6 This is a schematic diagram of the cable device described in this invention.

[0021] Figure 7 This is a top view of the combined ramp described in this invention.

[0022] Figure 8 This is a schematic diagram illustrating the switching of the working states of the folded hook and sleeve described in this invention.

[0023] Figure 9This is a schematic diagram of the first working state of the ship-mounted movable ramp described in this invention.

[0024] Figure 10 This is a schematic diagram of the second working state of the ship-mounted movable ramp described in this invention.

[0025] Among them, 1-upper vehicle deck, 2-lower vehicle deck, 3-upper movable ramp, 4-lower movable ramp, 5-sleeve, 61-support column, 62-bottom support point, 63-middle support point, 64-top support point, 7-telescopic rod, 8-electromagnetic coil, 9-electromagnetic ring, 10-warning light bulb, 71-lifting hole, 11-pulley, 12-cable, 13-cable hook, 14-fine adjustment device, 15-light bulb switch, 16-hydraulic device switch, 17-Z-type folded hook, 18-hydraulic device. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1-8 As shown, a modular movable ramp for ships is provided between two adjacent vehicle decks. It includes two modular sections staggered in both the horizontal and vertical directions. The adjacent ends of the two modular sections are docking ends, and their opposite ends are rotatably connected to the ship's structure, allowing them to rotate vertically. Support components are provided on the front and rear sides of the docking ends of the two modular sections. The upper surface of the support components is on the same horizontal plane as the opposite side of the upper vehicle deck 1. Multiple movable ramp support points, which can extend and retract parallel to the docking end faces of the modular sections, are spaced apart from bottom to top on the support components. At least one set of lifting devices is provided on the front and rear sides of at least one modular section, perpendicular to its docking end direction. The lifting components of the lifting devices are slidably connected to the docking side of the lower movable ramp 4.

[0028] Specifically, in this embodiment, the two adjacent vehicle decks are the upper vehicle deck 1 and the lower vehicle deck 2, and horizontally misaligned notches are provided on the upper vehicle deck 1 and the lower vehicle deck 2; the two combined sections are the upper movable ramp 3 and the lower movable ramp 4, which are respectively embedded in the notches of the upper vehicle deck 1 and the lower vehicle deck 2, and their docking ends are rotatably connected to the upper vehicle deck 1 and the lower vehicle deck 2, respectively.

[0029] In this embodiment, the support assembly includes a support column 61 and a hydraulic device 18. The lower end of the support column 61 is fixed to the lower vehicle deck 2. The support column 61 has a hollow structure. There are three support points on the support column 61: a bottom support point 62, a middle support point 63, and a top support point 64. The upper surface of the top support point 64 is on the same horizontal plane as the surface of the upper vehicle deck 1, and the upper surface of the bottom support point 62 is on the same horizontal plane as the opposite surface of the lower vehicle deck 2. The hydraulic device 18 is connected to the middle support point 63 and the top support point 64, and drives them to extend and retract within and outside the hollow cavity of the support column 61.

[0030] In this embodiment, the hydraulic device 1818 has a liquid channel inside, and the support points at the middle and top are extended and retracted by controlling the flow of liquid.

[0031] Furthermore, the lifting device is located on the front and rear sides of the lower movable ramp 4; the combined movable ramp also includes at least two cable assemblies, and the upper movable ramp 3 and the lower movable ramp 4 are vertically connected by the two cable assemblies.

[0032] More specifically, the cable assembly includes a pulley 11, a cable 12, and two hooks. The pulley 11 is fixed to the upper part of the side of the support column 61 near the combined movable ramp. The two hooks are respectively fixed to the lower end face and the upper end face of the upper movable ramp 3 and the lower movable ramp 4. The cable 12 passes around the pulley 11 and is connected to the two hooks at both ends.

[0033] Understandably, before the lower movable ramp 4 rises under the lifting action of the lifting device, the support points in the support assembly used to support the upper movable ramp 3 are retracted. When the lower movable ramp 4 rises under the lifting action of the lifting device, the upper movable ramp 3 descends under its own weight, and the cable 12 is tightened by the upper movable ramp 3, thereby generating an upward pulling force on the lower movable ramp 4. The lower movable ramp 4 rises slowly under the action of the cable 12 and the lifting device.

[0034] Furthermore, the cable 12 assembly also includes two fine-tuning devices 14, which are respectively fixed on both sides of the cable 12 along its length.

[0035] With this configuration, when the movable ramp needs to be set to the first working state, the fine-tuning device 14 can be adjusted to make the cable hook 13 and the lifting lug tightly connected, so that the top support point 64 is not stressed and the weight of the upper movable ramp 3 is entirely borne by the hooks on both sides of the upper movable ramp 3.

[0036] Furthermore, there are two lifting devices, which are arranged opposite to each other on the front and rear sides of the docking end of the two combined sections; the lifting device includes a telescopic rod 7, an electromagnetic coil 8 is fixed on the lower fixed section of the telescopic rod 7, the electromagnetic coil 8 is connected to a power source, and an electromagnet ring 9 is fixed on the telescopic section of the telescopic rod 7; the upper part of the telescopic section is slidably connected to the lower movable ramp 4 along the front and rear side extension direction of the lower movable ramp 4 through a connecting assembly.

[0037] Furthermore, the lifting assembly also includes a Z-shaped folded hook 17. A sleeve 5 is fixed on the front and rear sides of the lower movable ramp 4 near the docking end. A lifting hole 71 is provided on the upper part of the telescopic section of the telescopic rod 7. The upper crossbar of the Z-shaped folded hook 17 is inserted into the lifting hole 71. A sliding groove is provided on the side wall of the sleeve 5. The upper crossbar of the Z-shaped folded hook 17 extends into the sliding groove and is slidably connected with the sleeve 5.

[0038] Furthermore, the lifting assembly also includes a warning bulb 10, which forms a closed circuit with the electromagnet ring via a wire and can rise and fall with the electromagnet ring.

[0039] The higher the power of the switching power supply, the greater the magnetic flux through the coil, resulting in a larger induced current and a brighter bulb. As long as the bulb forms a closed circuit, an induced current will be generated between the electromagnet ring and the electromagnet coil.

[0040] Initially, the aforementioned combined movable ramp is in its second working state, such as... Figure 10 As shown, at this time, the upper movable ramp 3 and the lower movable ramp 4 act as decks, which can be used for parking and vehicle driving; at this time, the bottom support point 62 and the top support point 64 of the support device are under force, the middle support point 63 is not under force, and the cable 12 device at the top of the support device is in a semi-stressed state.

[0041] When the active ramp needs to be set to its first working state, such as Figure 9As shown, at this time, the cable hook 13 can be tightly connected to the lifting lug by adjusting the fine-tuning device 14, so that the top support point 64 is not stressed and the weight of the upper half of the movable ramp is borne entirely by the hooks on both sides of the upper half of the movable ramp; then, the hydraulic telescopic device switch located on the side of the support device is turned on, and the hydraulic telescopic device is adjusted to drive the middle support point 63 and the top support point 64 to retract; then, under the action of the switch being energized, the telescopic rod 7 adjusts the power of the electromagnetic coil 8, so that the like magnetic poles between the electromagnetic coil 8 and the electromagnetic ring 9 increase, generating an increasingly larger repulsive force. The telescopic rod 7 rises, causing the lower movable ramp 4 connected to the folded hook 17 to rise as well. Simultaneously, the warning light flashes (the electromagnetic coil 8 is energized, increasing magnetic flux and generating current; the bulb is connected to a coil of copper wire, forming a closed circuit, hence the warning light 10 flashes). As the lower movable ramp 4 rises, the upper movable ramp 3 slowly descends. When it reaches the middle support point 63, the hydraulic telescopic device is adjusted, causing the middle support point 63 and the top support point 64 to extend. At this point, the power of the electromagnetic coil 8 is reduced, and the two sections of the movable ramp slowly land on the middle support point 63. The switch is then turned off, and the warning light 10 goes out, indicating the first operating state.

[0042] When the movable ramp needs to return from the first working state to the second working state, the switch is turned on, the electromagnetic coil 8 and the electromagnet ring 9 generate a repulsive force, the warning light bulb 10 flashes, and the lower movable ramp 4 is pulled upward by the folded hook 17. At this time, the hydraulic telescopic switch is turned on, and the hydraulic telescopic device is adjusted to drive the middle support point 63 and the top support point 64 to retract. Since the weight of the lower movable ramp 4 is slightly greater than that of the upper movable ramp 3, the lower movable ramp 4 slowly descends under the action of gravity, while the upper movable ramp 3 slowly rises. During this process, it is only necessary to control the repulsive force between the control electromagnetic coil 8 and the electromagnet ring 9 to be slightly less than the weight of the movable ramp connected to the folding hook 17 driven by the electromagnet ring 9 (the weight of the lower half minus the weight of the upper half). When the lower end of the lower movable ramp 4 lands at the bottom support point 62, control the hydraulic telescopic switch to adjust the middle support point 63 and the top support point 64 to extend. At this time, the upper movable ramp 3 lands at the top support point 64. The switch is turned off, the power decreases, the magnetic flux gradually decreases to 0, the induced current decreases to 0, and the warning bulb 10 goes out. At this time, the movable ramp is in the second working state.

[0043] When the movable ramp is in its second working state, the upper movable ramp 3 and the lower half can be used as ordinary decks for parking cars. When it is in its first working state, the central support point 63 in the movable ramp support device and the hook together provide support for the movable ramp, improving the stability of the movable ramp. In addition, the workload is less during the raising and lowering of the movable ramp, and it can improve the loading and unloading efficiency of cars.

[0044] Those skilled in the art should understand that the above description is merely a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ship-mounted modular ramp, characterized in that, The combined movable ramp is located between two adjacent vehicle decks and includes two combined sections that are staggered in both the horizontal and vertical directions. The adjacent ends of the two combined sections are docking ends, and the opposite ends of the docking ends are rotatably connected to the ship structure so that it can be rotated in the vertical direction. Support components are provided on the front and rear sides of the docking ends of the two combined sections. The upper end surface of the support components is located on the same horizontal plane as the opposite side of the upper vehicle deck. Multiple movable ramp support points that can extend and retract along the end faces of the docking ends of the combined sections are provided on the support components from bottom to top. At least one set of lifting devices is provided on the front and rear sides of at least one combined section in the direction perpendicular to its docking end. The lifting components of the lifting devices are slidably connected to the docking side of the lower movable ramp.

2. The ship-mounted modular ramp according to claim 1, characterized in that, The upper and lower vehicle decks are two adjacent vehicle decks, with horizontally staggered notches on the upper and lower vehicle decks. The two combined sections are an upper movable ramp and a lower movable ramp, which are respectively embedded in the notches of the upper and lower vehicle decks, and their opposite ends are rotatably connected to the upper and lower vehicle decks, respectively.

3. The ship-mounted modular ramp according to claim 2, characterized in that, The lifting device is located on both the front and rear sides of the lower movable ramp; the combined movable ramp also includes at least two cable assemblies, and the upper movable ramp and the lower movable ramp are vertically connected by the two cable assemblies.

4. The ship-mounted modular ramp according to claim 3, characterized in that, The support assembly includes a support column and a hydraulic device. The lower end of the support column is fixed to the lower vehicle deck. The support column has a hollow structure. There are three support points on the support column: a bottom support point, a middle support point, and a top support point. The upper surface of the top support point is on the same horizontal plane as the surface of the upper vehicle deck, and the upper surface of the bottom support point is on the same horizontal plane as the opposite surface of the lower vehicle deck. The hydraulic device is connected to the middle support point and the top support point, and drives them to extend and retract within and outside the hollow cavity of the support column.

5. The ship-mounted modular ramp according to claim 3, characterized in that, The lifting device consists of two units, which are arranged opposite each other on the front and rear sides of the docking end of the two combined sections. Each lifting device includes a telescopic rod, an electromagnetic coil is fixed on the lower fixed section of the telescopic rod, the electromagnetic coil is connected to a power source, and an electromagnet ring is fixed on the telescopic section of the telescopic rod. The upper part of the telescopic section is slidably connected to the lower movable ramp along the front and rear sides of the lower movable ramp through a connecting assembly.

6. The ship-mounted modular ramp according to claim 5, characterized in that, The lifting assembly also includes a Z-shaped folded hook. A sleeve is fixed on the front and rear sides of the lower movable ramp near the docking end. A lifting hole is provided on the upper part of the telescopic section of the telescopic rod. The upper crossbar of the Z-shaped folded hook is inserted into the lifting hole. A sliding groove is provided on the side wall of the sleeve. The upper crossbar of the Z-shaped folded hook extends into the sliding groove and is slidably connected with the sleeve.

7. The ship-mounted combined movable ramp according to any one of claims 5 or 6, characterized in that, The lifting assembly also includes a warning light bulb, which forms a closed circuit with the electromagnet ring via a wire and can rise and fall with the electromagnet ring.

8. The ship-mounted modular ramp according to claim 4, characterized in that, The cable assembly includes a pulley, a cable, and two hooks. The pulley is fixed to the upper part of the side of the support column near the combined movable ramp. The two hooks are respectively fixed to the lower and upper ends of the upper and lower movable ramps. The cable passes around the pulley and is connected to the two hooks at both ends.

9. The ship-mounted modular ramp according to claim 8, characterized in that, The cable assembly also includes two fine-tuning devices, which are respectively fixed on both sides of the cable length direction.

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