Launching device capable of absorbing counter force of bow fulcrum of outer plate sharp and thin line type ship
By designing a drainage device in which wooden blocks with V-shaped grooves come into contact with the outer panel of the hull, the problem of large reaction force at the bow fulcrum of the ship is solved, and the structural stability and cost-effectiveness are improved.
Patent Information
- Application Number
- CN202420820368.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-19
AI Technical Summary
During the ship construction process, the reaction force at the bow fulcrum of the outer plate tip thin line type ship is very large, which can easily lead to structural instability and increase repair costs.
A drainage device that can absorb the reaction force of the bow fulcrum is designed, and a wooden block with V-shaped grooves is used to contact the outer panel of the hull to digest and absorb the reaction force by increasing the contact area.
It effectively reduces the impact of the reaction force on the structure of the bow fulcrum, avoids structural deformation, and disperses the pressure concentration of the reaction force on the slide, reducing the impact of the repair cost and delivery plan.
Smart Images
Figure CN222432559U_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of ship construction and design, and in particular relates to a launching device capable of absorbing the reaction force of a bow fulcrum of a thin-line outer plate type ship. Background Art
[0002] Ships with thin outer plate are thin and sharp near the bulbous bow, with V-shaped lines. When this type of ship is built on the slipway, three slideways are required for longitudinal launching. The effective contact area between the pads above the slide at the bow fulcrum and the outer bottom plate of the hull is very small. When the ship is stern-floating, the fulcrum reaction force at the bow fulcrum is very large, which can easily cause structural instability and generate a lot of structural repair work, resulting in a significant increase in costs and affecting the ship delivery plan. Laying wooden blocks under the bow fulcrum to digest and absorb the fulcrum reaction force can effectively solve this problem. Summary of the invention
[0003] In order to solve the above problems, the present invention provides a launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate, and the technical solution adopted is:
[0004] A launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a pointed outer plate comprises a rectangular iron frame, wherein both ends and the top of the frame are open structures, frame support bars are arranged on both sides and the bottom of the frame, and the height of the frame gradually increases from one end to the other end along the length direction of the frame. A plurality of wooden blocks are embedded in the frame, and the plurality of wooden blocks are arranged in sequence along the length direction of the frame. The wooden blocks have downwardly sunken grooves, and the grooves are V-shaped. The bottoms of the V-shaped grooves are located on the same horizontal line, and the height difference between the lowest point and the highest point of the grooves is at least 500 mm.
[0005] There are two rows of flat irons on the top of the frame, which press down the top of the wooden block. Vertical bolts pass through the flat irons and the wooden block from the top of the wooden block. There are transverse bolts on both sides of the bottom of the frame. The transverse bolts are close to the bottom of the wooden block. They pass through the frame and the wooden block from the outside of the wooden block to fix the wooden block in the frame. Longitudinal bolts pass through the frame and the wooden block from the stern side of the wooden block to the bow to fix the wooden block in the frame.
[0006] There are three slides on the slipway, which are arranged at equal intervals, and the launching device is located in the reaction area of the bow fulcrum of the middle slide.
[0007] The above-mentioned launching device that can absorb the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate, further, the frame support bars are divided into lateral support bars and bottom support bars, the lateral support bars are located on both sides of the frame, and the bottom support bars are located at the bottom of the frame, the lateral support bars are vertically arranged along the height direction, and the bottom support bars are horizontally arranged along the width direction.
[0008] The above-mentioned launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate, further, has a width of the launching device that is the same as a width of the skateboard.
[0009] The above-mentioned launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate, further, has a rubber sheet laid on the inner surface of the V-shaped groove.
[0010] The above-mentioned launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate, further comprises four lifting ears arranged on the top of the frame, and the four lifting ears are symmetrically arranged on the top of the frame.
[0011] The launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate is further characterized in that the outer contour of the frame is made of angle steel and the frame support bars are made of flat iron.
[0012] The above-mentioned launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate, further, the grooves on the wooden block are developed and matched according to the hull line drawing to maximize the contact area with the outer plate of the hull.
[0013] The launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate is further characterized in that the steel wire rope passes through the lifting lug and is fixedly connected to the deck of the ship.
[0014] The contact area between the grooved wood block and the outer plate of the present invention is many times that of the wood block pad only under the bow fulcrum, which can digest and absorb the bow fulcrum reaction force to the greatest extent, avoid the deformation of the bow structure, and is also conducive to dispersing the problem of the bow fulcrum reaction force on the slideway. The wood block structure is relatively simple, energy-saving and environmentally friendly, easy to manufacture, easy to ensure manufacturing accuracy and quality, convenient to install on the slipway, safe and reliable when launching, and has obvious effect on absorbing the bow fulcrum reaction force. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic diagram for use of the launching device;
[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;
[0017] Figure 3 It is a schematic diagram of the framework structure;
[0018] Figure 4 for Figure 3 Schematic diagram of the perspective of middle A;
[0019] Figure 5 for Figure 3 Schematic diagram of the middle B perspective;
[0020] Figure 6 It is a schematic diagram of the framework structure from a bird's-eye view;
[0021] Figure 7 It is a schematic diagram of the wooden block structure;
[0022] Figure 8 It is a schematic diagram of the position structure of the wooden block, the skateboard and the slideway;
[0023] Fig. 9 This is a schematic diagram of the structure of the slipway from above;
[0024] Fig.10 It is a side view of the ship in the construction position on the slipway;
[0025] Fig.11 This is a schematic diagram of the stern float when the ship is launched;
[0026] Among them, 1-wooden block, 2-longitudinal bolt, 3-transverse bolt, 4-vertical bolt, 5-bottom support bar, 6-flat iron, 8-lifting ear, 9-lateral support bar, 10-slide, 11-rubber sheet, 12-hull outer plate, 13-frame, 14-bow fulcrum reaction area. DETAILED DESCRIPTION
[0027] like Figure 2 As shown, a launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate includes a rectangular iron frame 13, the two ends and the top of the frame are open structures, frame support bars are arranged on both sides and the bottom of the frame, and the height of the frame gradually increases from one end to the other along the length direction of the frame. A plurality of wooden blocks 1 are embedded in the frame, and the plurality of wooden blocks are arranged in sequence along the length direction of the frame. The wooden blocks are matched according to the hull linear drawings, and a groove is cut out in the middle of the wooden square to maximize the contact surface with the outer plate 12 of the hull. From the cross-section, the height difference between the lowest point and the highest point of the groove is at least 500mm, so as to better digest and absorb the reaction force of the bow fulcrum. The flat irons 6 on the bow and stern sides of the frame are respectively provided with longitudinal bolts 2, which pass through the frame and the wooden blocks from the stern side of the wooden blocks to the bow in sequence, and fix the wooden blocks in the frame.
[0028] There are two rows of flat irons on the top of the frame, which press the top of the wooden block. Vertical bolts 4 pass through the flat irons and the wooden block from the top of the wooden block. There are transverse bolts 3 on both sides of the bottom of the frame. The transverse bolts are close to the bottom of the wooden block and pass through the frame and the wooden block from the outside of the wooden block to fix the wooden block in the frame.
[0029] The block is groove-shaped as a whole, and the groove on it is developed according to the outer plate line at the bow fulcrum, which can greatly increase the contact area between the block and the outer plate. Figure 3 , 4 As shown in 5, before the wooden block is made, an iron frame is made of angle steel and flat iron. The length and width of the iron frame are the same as the length and width of the skateboard. The outer contour of the frame is made of angle steel, and the frame support bars are made of flat iron. The frame support bars are divided into lateral support bars and bottom support bars. The lateral support bars are located on both sides of the frame, and the bottom support bar 5 is located at the bottom of the frame. The lateral support bars 9 are vertically arranged along the height direction, and the bottom support bars are horizontally arranged along the width direction.
[0030] After the iron frame is made, several pieces of wood are placed in the iron frame along the width direction of the iron frame, and the wood is tightened and fixed in the longitudinal, transverse and vertical directions by through bolts. Figure 6 , 7 As shown in Figure 8, the wood block is machined and matched according to the hull line drawing, and a groove is cut in the middle of the wood block to maximize the contact area with the hull outer plate. From the cross-section, the height difference between the lowest point and the highest point of the groove is at least 500mm, which is used to better digest and absorb the reaction force of the bow fulcrum.
[0031] like Figure 1 As shown, when in use, the wooden block is hoisted on the slide plate below the fulcrum of the bow, and in order to protect the paint of the outer plate of the hull, a rubber sheet 11 is laid in the groove of the wooden block, and then the wooden block is closely fitted with the outer bottom plate. The lifting lug 8 on the wooden block iron frame is firmly fastened to the steel wire rope connected to the deck by a steel wire rope.
[0032] The traditional two slideways for launching a ship with pointed and thin outer plate cannot meet the structural weight of the pointed and thin bow area. Three slideways 10 are arranged on the slipway, and the three slideways are arranged at equal intervals. The launching device is located in the bow fulcrum area of the middle slideway, and the wood block is placed in the bow fulcrum area of the center slideway. Fig. 9 As shown, the slide plate is located between the slideway and the hull. Each slide plate is about 6*2.4*0.6m. Ball bearings or slideway oil for launching are used between the slide plate and the slideway. Before the ship is launched, many slide plates are inserted from the higher end of the slideway and placed on the slideway. When the ship is about to be launched, the load-bearing support piers under the ship are unloaded, and the ship falls completely on the slide plate. After the anti-skid machine under the middle slide plate is unloaded, the ship and the slide plate slide longitudinally into the water from the slideway. The bow fulcrum reaction area of the ship launched by the slipway must fall in this strong force area. The strong force area is a section of the slipway foundation area with the strongest load capacity. This area is roughly located in the middle and rear part of the slipway behind the anti-skid machine. The function of the strong force area is that after the stern of the ship enters the water, according to the principle of leverage, the bow fulcrum is subjected to the maximum pressure caused by the buoyancy of the stern.
[0033] like Fig.10 , 11As shown, before launching, the appropriate tide height is selected through calculation. When the ship is launched, the appropriate tide height should be matched with the weight center of gravity, sliding force, draft when stern floats, stroke when stern floats, buoyancy when stern floats, buoyancy center position when stern floats, etc. of the ship, so that the bow fulcrum falls in the strong force area when it is subjected to the maximum pressure. When the stern of the ship enters the water to a certain depth, the stern begins to float, and the bow fulcrum entering the strong force area is immediately subjected to force. The wooden block located on the central slideway can well bear the bow fulcrum reaction force generated by the stern float. When the ship is launched on the slipway, when the stern enters the water and gradually floats up to generate buoyancy, due to the principle of lever, pressure is also generated on the bow fulcrum at this time, and a fulcrum reaction force will be generated on the structure near the fulcrum. The area subjected to the fulcrum reaction force is the bow fulcrum reaction area 14. In order to prevent the slipway foundation from being damaged, the bow fulcrum must fall in the strong force area when it is subjected to the maximum pressure.
Claims
1. A launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate, characterized in that: The invention comprises a rectangular iron frame (13), the two ends and the top of the frame are open structures, the two sides and the bottom of the frame are provided with frame support bars, and the height of the frame gradually increases from one end to the other end along the length direction of the frame, and a plurality of wooden blocks (1) are embedded in the frame, and the plurality of wooden blocks are arranged in sequence along the length direction of the frame, and the wooden blocks have downwardly concave grooves, and the grooves are V-shaped, and the bottoms of the V-shaped grooves are located on the same horizontal line, and the height difference between the lowest point and the highest point of the grooves is at least 500 mm; The top of the frame is provided with two rows of flat irons (6), which press the top of the wooden block. The vertical bolts (4) pass through the flat irons and the wooden block in sequence from the top of the wooden block downwards. The bottom of the frame is provided with transverse bolts (3) on both sides. The transverse bolts are close to the bottom of the wooden block and pass through the frame and the wooden block in sequence from the outside of the wooden block to fix the wooden block in the frame. The longitudinal bolts (2) pass through the frame and the wooden block in sequence from the stern side of the wooden block to the bow to fix the wooden block in the frame. Three slideways (10) are arranged on the slipway, and the three slideways are arranged at equal intervals. The launching device is located in the bow support reaction area (14) of the middle slideway.
2. A launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate according to claim 1, characterized in that: The frame support bars are divided into lateral support bars (9) and bottom support bars (5), the lateral support bars are located at both sides of the frame, and the bottom support bars are located at the bottom of the frame. The lateral support bars are arranged vertically along the height direction, and the bottom support bars are arranged horizontally along the width direction.
3. A launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate according to claim 1, characterized in that: The width of the launching device is the same as the width of the skateboard.
4. A launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate according to claim 1, characterized in that: The inner surface of the V-shaped groove is paved with a rubber sheet (11).
5. The launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate according to claim 1, characterized in that: Four lifting ears (8) are arranged on the top of the frame, and the four lifting ears are symmetrically arranged on the top of the frame.
6. The launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate according to claim 1, characterized in that: The outer profile of the frame is made of angle iron and the frame support bars are made of flat iron.
7. The launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate according to claim 1, characterized in that: The grooves on the wooden blocks are designed according to the hull line drawings to maximize the contact area with the hull outer plate.
8. The launching device capable of absorbing the reaction force of the bow fulcrum of a thin-line ship with a sharp outer plate according to claim 5, characterized in that: The wire rope passes through the lifting lug and is fixedly connected to the ship deck.