Economical ro-ro passenger ship suitable for Jones Gorges
By designing the two-layer structure of the main vehicle cabin and the upper vehicle cabin in the Qiongzhou Strait passenger roulette, abolishing the small vehicle cabin, and using detachable springboard connections, the problems of insufficient profitability and insufficient space utilization of active ships have been solved, and more efficient vehicle carrying and economic improvement have been achieved.
Patent Information
- Application Number
- CN202422564256.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-10-23
AI Technical Summary
The current Qiongzhou Strait passenger roulette ship has insufficient profits in loading trucks and passengers, insufficient vehicle space utilization and limited small cabin space, resulting in low operational efficiency and increased costs.
An economical passenger roulette boat was designed, including the main deck, upper deck and superstructure. A main vehicle cabin was formed between the main deck and the upper deck. There was an overhead space below the superstructure to form an upper vehicle cabin. The small vehicle cabin under the main deck was abolished, and the vehicle passage space was increased. The main deck and the upper deck were connected through a detachable springboard to achieve the connection between the two-story vehicle cabins, meeting the specifications and limits while increasing the vehicle load capacity.
It significantly improved the vehicle loading capacity, increased profitability, increased lane length by about 115%, slightly lower cost, reduced passenger cabins, moderate total tonnage, and meets route requirements.
Smart Images
Figure CN223116536U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ships, and particularly relates to an economical passenger and roll-on / roll-off ship applicable to the Qiongzhou Strait. Background Art
[0002] The Qiongzhou Strait is the only passage between Guangdong and Hainan. The entire shipping route is about 12.4 nautical miles. The passenger and roll-on / roll-off ship serves as the only carrier for passenger and cargo transportation on this route. The regional specification "Document No. 120 of Zhuyunshuifa
[2021] " has the following restrictions on the main dimensions of this route: the overall length does not exceed 135 meters, the ship width is 22.5 ± 2 m, the draft is 4.5 ± 0.5 m, and the gross tonnage does not exceed 12,500.
[0003] The characteristics of the existing passenger and roll-on / roll-off ships on the Qiongzhou Strait route are briefly described as follows: the gross tonnage is about 12,500, the overall length is about 125 - 128 m, the ship width is about 20.5 meters, the draft is about 4.2 meters, and the passenger capacity is 999; the main deck has a full-length large vehicle cabin that can carry trucks, and there is a small car garage for carrying cars under the main deck.
[0004] The existing ships have the following problems:
[0005] (1) The main profit point of the ship comes from carrying trucks (the ticket price for a truck loaded with a 40-foot container truck is about 1,200 yuan, while the ticket price for adult passengers has been 41.5 yuan for nearly 10 years). At present, the length of the large vehicle lanes of all existing ships in the Qiongzhou Strait is about 600 - 650 meters, and none of them exceed 700 meters. Under the restrictions of the specifications, the area of the ship allocated to the profitable business is not enough.
[0006] (2) At present, the passenger quota of all existing ships is 999 people. However, in 90% of the actual operation cases, the number of passengers on board is less than 500 people, and the empty cabin is relatively serious.
[0007] (3) At present, a small car cabin is arranged under the main deck of the existing ship. Due to the requirement of stability, a relatively wide double hull is needed, resulting in a small space for the small car cabin and a limited number of cars that can be loaded. This also brings many adverse factors: including the need to set up a watertight ramp cover to enter the small car cabin; the small car cabin is an enclosed space, and the internal environment such as ventilation and air is relatively poor, which causes great dissatisfaction among drivers, and the improvement by setting up high-power fans is limited. Content of the Utility Model
[0008] The technical problem to be solved by the utility model is to overcome the above-mentioned defects existing in the prior art and provide an economical passenger and roll-on / roll-off ship applicable to the Qiongzhou Strait.
[0009] The utility model solves the above technical problem through the following technical solutions:
[0010] An economical passenger and roll-on / roll-off ship applicable to the Qiongzhou Strait, which includes a main deck, an upper deck and a superstructure. The upper deck is arranged above the main deck; the superstructure is arranged above the upper deck. A main vehicle cabin is formed between the main deck and the upper deck; an overhead space allowing vehicles to pass through is provided between the bottom of the superstructure and the upper deck; the open-air part of the upper deck and the overhead space under the superstructure form an upper vehicle cabin; both the main vehicle cabin and the upper vehicle cabin are provided with 7 truck lanes.
[0011] Furthermore, no cargo hold for loading vehicles is provided below the main deck.
[0012] Furthermore, the height of the overhead space is the same as that of the main vehicle cabin.
[0013] Furthermore, among the 7 truck lanes in the main vehicle cabin, the widths of 5 truck lanes are all 3m, and the widths of 2 truck lanes are all 3.2m.
[0014] Furthermore, among the 7 truck lanes in the upper vehicle cabin, the widths of 5 truck lanes are all 3m, and the widths of 2 truck lanes are all 3.2m.
[0015] Furthermore, the widths of both the upper deck and the main deck are not greater than 24.5 meters.
[0016] Furthermore, the widths of the upper deck and the main deck are the same.
[0017] Furthermore, there is a variable ship width profile shape with the ship width gradually decreasing between the main deck and the waterline position.
[0018] Furthermore, a gangplank that can extend to the main deck is embedded on the upper deck, and both ends of the gangplank are hinged to the upper deck.
[0019] Furthermore, the connection between the gangplank and the upper deck is detachable.
[0020] The beneficial effects of the present utility model are as follows: The present utility model can load more vehicles, and the profitability is greatly improved. The length of the large vehicle lanes of the existing ships is about 650 meters. Under the condition that the dimensions and gross tonnage of the present utility model are not much different from those of the original ship, the lane length exceeds 1400 meters, an increase of about 115%. Since the small vehicle cabin is cancelled and the superstructure is streamlined, in horizontal comparison, the construction cost of the present utility model is slightly lower than that of the existing ship type. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a side view of a preferred embodiment of the present utility model.
[0022] Figure 2 It is a top view of the upper deck of a preferred embodiment of the present utility model.
[0023] Figure 3It is a top view of the main deck of a preferred embodiment of the present utility model.
[0024] Figure 4 It is a cross-sectional view of a preferred embodiment of the present utility model. Specific embodiments
[0025] The following is a preferred embodiment and, in combination with the accompanying drawings, will more clearly and completely illustrate the present utility model.
[0026] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, an economical passenger and roll-on / roll-off ship applicable to the Qiongzhou Strait includes a main deck 10, an upper deck 20, and a superstructure 30. The upper deck 20 is arranged above the main deck 10; the superstructure 30 is arranged above the upper deck 20, and a main vehicle cabin 40 is formed between the main deck 10 and the upper deck 20.
[0027] An overhead space 52 allowing vehicles to pass through is provided between the bottom of the superstructure 30 and the upper deck 20. The height of the overhead space 52 is the same as the height of the main vehicle cabin 40.
[0028] The open-air part of the upper deck 20 and the overhead space 52 below the superstructure form an upper vehicle cabin 50.
[0029] No cargo hold for loading vehicles is provided below the main deck 10.
[0030] The main vehicle cabin 40 is provided with 7 truck lanes 41. The truck lanes 41 in the main vehicle cabin are arranged on the main deck 10.
[0031] Among the 7 truck lanes 41 in the main vehicle cabin 40, the widths of 5 truck lanes are all 3m, and the widths of 2 truck lanes are all 3.2m. As Figure 3 and 4 shown, in the main vehicle cabin, there are 5 truck lanes with a width of D1, and the width D1 is 3m; there are 2 truck lanes with a width of D2, and the width D2 is 3.2m.
[0032] The upper vehicle cabin 50 is provided with 7 truck lanes 51. The truck lanes 51 in the upper vehicle cabin are arranged on the upper deck 20.
[0033] Among the 7 truck lanes 51 in the upper vehicle cabin 50, the widths of 5 truck lanes are all 3m, and the widths of 2 truck lanes are all 3.2m. The layout of the truck lanes in the upper vehicle cabin is the same as that in the main vehicle cabin.
[0034] The widths of the upper deck and the main deck are both not greater than 24.5 meters. The width of the upper deck 20 is the same as the width of the main deck 10.
[0035] There is a variable beam cross-sectional shape with a gradually decreasing beam width between the main deck 10 and the waterline 11. The width of the main deck is greater than the beam width below the waterline.
[0036] A plurality of watertight compartments 13 are provided below the main deck 10.
[0037] A gangway 21 that can extend to the main deck is embedded in the upper deck 20. Both ends of the gangway 21 are hinged to the upper deck 20. The connection between the gangway 21 and the upper deck 20 is detachable. The gangway is flush with the upper deck.
[0038] The main deck 10 is provided with a gangway area 42 corresponding to the area directly below the gangway.
[0039] When a driving passage needs to be set up between the upper deck and the main deck, the gangway can be used as the driving passage between the upper deck and the main deck. The end of the gangway close to the bow is the front end of the gangway; the end of the gangway close to the stern is the rear end of the gangway.
[0040] The gangway has two usage methods.
[0041] In the first method, the front end of the gangway disengages from the upper deck, and the front end of the gangway abuts downward against the main deck; at this time, the rear end of the gangway is hinged to the upper deck.
[0042] In the second method, the rear end of the gangway disengages from the upper deck, and the rear end of the gangway abuts downward against the main deck; at this time, the front end of the gangway is hinged to the upper deck.
[0043] In both of these two methods, the gangway can be used as the driving passage between the upper deck and the main deck.
[0044] The present utility model proposes a ship type that greatly improves the truck loading capacity based on the existing boundary conditions. One of the core points is based on the requirement in the ship specifications that "the open deck (without a deck above) is not included in the gross tonnage".
[0045] In the present utility model, two full layers of truck vehicle compartments are provided throughout the ship, namely the main vehicle compartment and the upper vehicle compartment. In the upper vehicle compartment, most of it is open (not included in the gross tonnage), and a small part (i.e., the overhead space) under the superstructure is included in the gross tonnage.
[0046] The main vehicle compartment and the upper vehicle compartment are connected by a movable gangway inside that can be inclined at both ends.
[0047] Both the main vehicle compartment and the upper vehicle compartment are provided with 7 truck lanes. Among them, the width of 5 truck lanes is 3.0 m, which is the conventional width; the width of 2 truck lanes is 3.2 m, and these two truck lanes fully consider over-width vehicle models. Compared with all currently serving ships that have 6 large lanes, the present utility model significantly enhances the truck carrying capacity.
[0048] In the present utility model, no space for loading vehicles is provided below the main deck. That is to say, no car cabin for loading sedans is provided below the main deck. In this way, the height of the main deck can be appropriately reduced to decrease the gross tonnage; by densifying the subdivision below the main deck, the problem of insufficient damage stability caused by the lower freeboard can be solved.
[0049] In the present utility model, the superstructure is erected above the vehicle loading cabin; the superstructure is mainly the passenger cabin. After setting up the overhead layer, the number of passenger cabins is reduced, and the permitted number of passengers can be reduced from the existing 999 to 600, which can reduce the gross tonnage of the ship.
[0050] In the present utility model, the widths of the main deck and the upper deck are less than 24 meters, usually about 23.9 m can be set to accommodate 7 truck lanes; a variable-width design is adopted between the main deck and the waterline position, and the width of the waterline part is about 21.0 m. This design solves, on the one hand, the problem that the overall widening results in too good stability, leading to the risk of vehicle movement and the discomfort brought to passengers by the excessive initial metacentric height (GM), and on the other hand, it also reduces the gross tonnage and is beneficial to the speed performance.
[0051] Based on the situation of the Qiongzhou Strait route and wharves, while conducting research on mainstream shipowners and combining the characteristics of existing ro-ro passenger ships, the present utility model proposes a ro-ro passenger ship with the maximized truck loading capacity and economic benefits under this shipping route.
[0052] The present utility model has the following advantages:
[0053] 1. It can load more vehicles, and the profitability is greatly improved. For existing ships, the length of the large truck lanes is about 650 meters. Under the condition that the dimensions and gross tonnage of the present utility model are not much different from those of the original ship, the lane length exceeds 1400 meters, an increase of about 115%.
[0054] 2. Due to the cancellation of the car cabin and the simplification of the superstructure, compared horizontally, the construction cost of the present utility model is slightly lower than that of the existing ship type.
[0055] The ship type of the present utility model will be a main ship type in the Qiongzhou Strait in the next few years.
[0056] Although the specific implementation manners of the present utility model have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present utility model is defined by the appended claims. Without departing from the principle and essence of the present utility model, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present utility model.
Claims
1. An economical passenger and roll-on / roll-off ship applicable to the Qiongzhou Strait, comprising a main deck, an upper deck and a superstructure, the upper deck being arranged above the main deck; the superstructure being arranged above the upper deck, and a main vehicle cabin being formed between the main deck and the upper deck; characterized in that, There is an overhead space allowing vehicles to pass between the bottom of the superstructure and the upper deck; the open part of the upper deck and the overhead space below the superstructure form the upper vehicle hold; both the main vehicle hold and the upper vehicle hold are provided with 7 truck lanes.
2. The economy passenger and roll-on / roll-off ship applicable to the Qiongzhou Strait as described in claim 1, wherein No cargo hold for loading vehicles is provided below the main deck.
3. The economy passenger and roll-on / roll-off ship applicable to the Qiongzhou Strait according to claim 1, wherein The height of the overhead space is the same as that of the main vehicle hold.
4. The economical passenger and roll-on / roll-off ship applicable to the Qiongzhou Strait according to claim 1, characterized in that, Among the 7 truck lanes in the main vehicle hold, 5 truck lanes have a width of 3m each, and 2 truck lanes have a width of 3.2m each.
5. The economical passenger and roll-on / roll-off ship applicable to the Qiongzhou Strait as described in claim 1, characterized in that, Among the 7 truck lanes in the upper vehicle hold, 5 truck lanes have a width of 3m each, and 2 truck lanes have a width of 3.2m each.
6. The economy passenger and roll-on / roll-off ship applicable to the Qiongzhou Strait as claimed in claim 1, wherein The widths of both the upper deck and the main deck are not greater than 24.5 meters.
7. The economical passenger and roll-on / roll-off ship applicable to the Qiongzhou Strait as claimed in claim 1, wherein, The upper deck and the main deck have the same width.
8. The economy passenger and roll-on / roll-off ship applicable to the Qiongzhou Strait as claimed in claim 7, wherein There is a variable beam profile shape with the beam gradually decreasing between the main deck and the waterline.
9. The economy passenger ro-ro ship applicable to the Qiongzhou Strait according to claim 1, characterized in that, A ramp that can extend to the main deck is embedded in the upper deck, and both ends of the ramp are hinged to the upper deck.
10. The economy passenger and roll-on / roll-off ship applicable to the Qiongzhou Strait as claimed in claim 9, wherein The connection between the ramp and the upper deck is detachable.