An LNG inland waterway multipurpose roll-on / roll-off cargo ship
By designing and arranging LNG fuel tanks and equipment in separate zones on inland waterway roll-on/roll-off cargo ships, the problem of equipment layout conflicts was solved, efficient space utilization and operational process optimization were achieved, and the safety and economy of the ships were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU MODERN SHIPBUILDING TECH
- Filing Date
- 2025-10-16
- Publication Date
- 2026-07-31
AI Technical Summary
In the existing technology, there are spatial layout conflicts when arranging equipment such as LNG fuel tanks, hydraulic folding ramps, lifting platforms and hatch covers on inland waterway roll-on/roll-off cargo ships. It is difficult to meet the requirements of safety distance and ease of operation, and at the same time, it affects the economic efficiency of the ship.
The design adopts a partitioned layout, with the LNG fuel tank located on the left side of the hull and equipped with anti-collision guide rails. The hydraulically folding ramp and watertight hatch are located on the right side. The equipment is coordinated through a pre-set lifting device, and the folding and lifting of the equipment are controlled by a 40-foot standard tank container and a hydraulic system.
It improves the space utilization and loading/unloading efficiency of equipment, enhances the safety of ships and optimizes operating procedures, and meets the requirements of safety distance and economy.
Smart Images
Figure CN224576778U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an LNG inland waterway multipurpose roll-on / roll-off cargo ship. Background Technology
[0002] With the advancement of urbanization and regional economic integration, the demand for roll-on / roll-off (Ro-Ro) cargo ships in inland waterways and maritime transport is increasing rapidly. Economic growth has driven demand for products such as automobiles and machinery, providing a stable cargo transportation market for Ro-Ro ships. As a type of cargo transport vessel connecting inland cities and coastal ports, Ro-Ro ships occupy an important position in the shipping market due to their efficient and convenient transportation methods. Faced with global climate change and environmental issues, the Ro-Ro shipping industry is also actively taking measures to promote green, environmentally friendly, and sustainable development. To adapt to market demands, inland waterway Ro-Ro ships are increasingly focusing on environmental protection, energy conservation, and efficiency in their design. LNG clean energy has become a major measure to reduce ship pollutant emissions. The application of LNG fuel on inland waterway Ro-Ro cargo ships is also becoming a development trend.
[0003] However, for inland waterway ro-ro cargo ships, the integrated arrangement of their ramps, elevator platforms, deck outfitting components, hatch covers, and LNG tanks presents certain difficulties and challenges. Specifically, in existing technologies, how to coordinate the arrangement of large-sized LNG fuel tanks, hydraulically folding ramps, elevator platforms, watertight hydraulic hatch covers, and stern anchors within the limited space at the stern of the ship, while simultaneously meeting the stringent requirements of inland waterway vessel regulations regarding safety distances and escape routes, and taking into account the ship's economy, operational convenience, and anchoring orientation requirements, is a prominent technical challenge currently facing the design of inland waterway LNG ro-ro cargo ships.
[0004] Therefore, there is a need for an LNG inland waterway multipurpose roll-on / roll-off cargo ship that can meet all functional requirements while maximizing space utilization and optimizing operational processes. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an LNG inland waterway multipurpose roll-on / roll-off cargo ship to achieve coordinated operation between various equipment, improve space utilization, operational efficiency, and ship economy. This purpose of this utility model is achieved as follows: This utility model proposes an LNG inland waterway multipurpose roll-on / roll-off cargo ship, including a hull. The upper part of the hull is provided with a fuel tank area and a cargo passage area. The fuel tank area is located on the left side of the hull and is equipped with an LNG fuel tank. The cargo passage area includes a ramp and a hydraulically folding tank cover. The ramp is installed on the left side of the hull, and the hydraulically folding tank cover is located on the right side of the fuel tank area. The lower part of the hydraulically folding tank cover is provided with a preset lifting device. The fuel tank area includes anti-collision guide rails, and the ramp is a hydraulically folding ramp.
[0006] Furthermore, the LNG fuel tank is a 40-foot container.
[0007] Furthermore, the bridge has a total length of 12m and a width of 5m, and a load-bearing capacity of 91t.
[0008] Furthermore, the lifting platform measures 10m in length and 5.5m in width, with a maximum load capacity of 43t.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: by dividing the stern into a fuel tank area and a cargo passage area, the LNG fuel and roll-on / roll-off equipment are arranged in a coordinated manner. The LNG fuel tank is arranged on the left side of the hull and equipped with anti-collision guide rails, while the hydraulic folding ramp and watertight hatch are arranged on the right side. The spatial conflict problem is solved through the partition design. This arrangement not only improves loading and unloading efficiency and space utilization, but also enhances ship safety. Attached Figure Description
[0010] Figure 1 This is a top view structural diagram of an LNG inland waterway multipurpose roll-on / roll-off cargo ship; Figure 2 This is a side view structural diagram of an LNG inland waterway multipurpose roll-on / roll-off cargo ship. The upper diagram is a schematic diagram before loading cargo, and the lower diagram is a schematic diagram after loading cargo. In the diagram: 1. Cargo passage area, 2. Hydraulic water-soluble tank cover, 3. Jump bridge, 4. Fuel tank area, 5. Anti-collision guide rail, 6. LNG fuel tank. Detailed Implementation
[0011] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.
[0012] Please refer to Figure 1-2 This utility model provides an embodiment of an LNG inland waterway multipurpose roll-on / roll-off cargo ship, including a hull. The upper part of the hull has a fuel tank area 4 and a cargo passage area 1. The fuel tank area 4 is located on the left side of the hull and is equipped with an LNG fuel tank 6. The cargo passage area 1 includes a ramp 3 and a hydraulically foldable tank cover 2. The ramp 3 is installed on the left side of the hull, and the hydraulically foldable tank cover 2 is located on the right side of the fuel tank area 4. The lower part of the hydraulically foldable tank cover 2 is equipped with a pre-set lifting device. The fuel tank area 4 includes anti-collision guide rails 5. The ramp 3 is a hydraulically folding ramp 3. The LNG fuel tank 6 is a 40-foot tank container. The ramp 3 has a total length of 12m and a width of 5m, with a load-bearing capacity of 91t. The lifting platform has a length of 10m and a width of 5.5m, with a maximum load-bearing capacity of 43t.
[0013] Specifically, the NG fuel tanks use standard 40-foot Type C independent fuel tank containers. These containers conform to ISO standards, have standardized dimensions and interfaces, and are easy to transport and replace. LNG fuel tank 6 is used to store liquefied natural gas, the main component of which is methane, a clean fuel. In actual implementation, fuel tank area 4 uses two sets of tank containers stacked along the ship's length on the side where the ship is moored. The stacking method can be expanded according to the range, with a maximum of two layers of high tank containers, meeting the requirement of four 40-foot LNG fuel tanks 6. Fuel tank area 4 is located 1m from the side of the hull, longitudinally arranged from the forward bulkhead of the aft engine room towards the stern. A 0.5m high isolation compartment is provided below the tank area to isolate the tanks from the machinery space. Anti-collision rails 5 are protective devices installed around the fuel tank area, usually made of high-strength steel, and arranged longitudinally. The main function of anti-collision rails 5 is to prevent... During loading and unloading operations or when the ship is berthed, external equipment or objects may collide with the LNG fuel tank 6, thus protecting the safety of the fuel tank. In actual implementation, the height of the anti-collision guide rail 5 should cover at least 2 / 3 of the height of the fuel tank, and the spacing should not exceed 1m, which can effectively prevent accidental collisions with forklifts, lifting equipment, and other equipment. The ramp 3 is a hydraulically folding ramp 3, installed on the left side of the ship. The hydraulically folding ramp 3 is a foldable and retractable ship ramp 3 device controlled by a hydraulic system. It consists of a hydraulic cylinder, a hinge mechanism, and the main body of the ramp 3. The ramp 3 is 12m long, 5m wide, and has a maximum load capacity of 91t, which can withstand the weight of a heavy tracked excavator. In actual implementation, the ramp 3 is tilted to the shore at a certain angle, allowing cargo to be loaded and unloaded by rolling up and down. The hydraulically water-soluble hatch cover 2 is a watertight hatch cover driven by a hydraulic system, consisting of a hatch cover plate, a hydraulic cylinder, and a locking device. The hatch cover evenly distributes cargo load at 2.5t / m², effectively preventing water from entering the cargo hold. The pre-set lifting device includes a steel wire rope pulley block driven by a hydraulic cylinder. The lifting platform is 10m long and 5.5m wide, with a maximum load capacity of 43t. In actual implementation, after the roll-on / roll-off cargo enters the ship through the ramp 3, the hydraulic hatch cover opens, the lifting platform rises to the main deck, and the cargo is driven onto the lifting platform before being lowered to the ship's inner bottom platform.
[0014] In actual implementation, the layout of fuel tank area 4 and cargo passage area 1 is independent yet coordinated. Fuel tank area 4 is located on the left side of the ship to ensure the safe storage and supply of LNG fuel. Cargo passage area 1 is located on the right side of the ship, and efficient loading and unloading of cargo is achieved through ramp 3 and hydraulic water-soluble cargo cover 2. This layout not only ensures the safety of fuel but also improves loading and unloading efficiency, and achieves a coordinated layout of LNG fuel and roll-on / roll-off equipment.
[0015] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A LNG inland multipurpose ro-ro cargo ship characterized in that, The vessel includes a hull, the upper part of which is provided with a fuel tank area and a cargo passage area. The fuel tank area is located on the left side of the hull and is equipped with LNG fuel tanks. The cargo passage area includes a ramp and a hydraulically folding hatch cover. The ramp is installed on the left side of the hull, and the hydraulically folding hatch cover is located on the right side of the fuel tank area. The lower part of the hydraulically folding hatch cover is provided with a preset lifting device. The fuel tank area includes anti-collision guide rails, and the ramp is a hydraulically folding ramp.
2. The LNG river multipurpose ro-ro cargo ship according to claim 1, characterized in that, The LNG fuel tank is a 40-foot container.
3. The LNG river multipurpose roll-on / roll-off cargo ship according to claim 2, characterized in that, The bridge measures 12m in length and 5m in width, and has a load-bearing capacity of 91t.
4. The LNG river multipurpose roll-on / roll-off cargo ship according to claim 3, characterized in that, The lifting platform measures 10m in length and 5.5m in width, with a maximum load capacity of 43t.