Process method for building and dragging ship

Abstract

The invention discloses a ship building and dragging technological method. The ship building and dragging technological method comprises the following steps that a, a lifting beam is transformed to serve as a ship segmented supporting structure; b, selecting the number and arrangement positions of lifting beams; c, movable piers are arranged below the lifting beams, sole timbers are arranged above the lifting beams, and supporting tools are placed at the heads and the tails of the ship sections; d, after the ship is built, box beams penetrate into the lower portions of the two sides of the lifting beam, gaps between the box beams and the lower portion of the lifting beam are tightly plugged through sole timbers, the adjustable piers are unloaded, the height of the adjustable piers is reduced, and the supporting tools at the head and the tail of the ship block are removed; e, a traction eye plate is installed on the first section of box beam, and modeling strength checking is carried out; f, the traction equipment drags the box beam to drive the ship to slide, and ship dragging docking operation is completed. According to the process method, the problems that the ship is small in size and large in linetype, and the supporting piers and the sliding box beams are difficult to lay are solved, the air bag renting cost is saved, the labor cost is saved, the service cycle of the floating dock is shortened, and the ship building cost is reduced.

Description

Technical Field

[0001] The invention relates to a process for ship construction and towing. Background Art

[0002] At present, the main dimensions of the 5500HP full-revolving tugboat powered by ammonia / diesel dual-fuel are a total length of 38 meters, a width of 11 meters, and a depth of 4.8 meters. The ship uses a floating dock to undertake the launching of ships. Due to the small size and large linear shape of the ship, there is no space to lay the box beam for towing after the support pier position is arranged during the slipway construction phase, so the conventional sliding block sliding docking method cannot be used. According to the experience of building small special ships built before, after the overall construction of the slipway is completed, the ship needs to be rented with air bags to lift the ship, and then the support piers are removed one by one and then the air bags are inserted, and the ship is towed into the floating dock for launching. This method requires the installation of towing eye plates and reverse towing eye plates on the outer plate of the hull, which increases the labor cost of the slipway pier removal and transportation tooling. At the same time, the rental of air bags increases the cost of ship construction. In order to save costs, a process method for ship construction and towing is invented to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a process for ship construction and towing which can solve the problem that the support piers and sliding box beams are difficult to lay due to the small size and large linear shape of the ship.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a process for ship construction and towing, comprising the following steps: a. Reconstruct the lifting beams used for module transportation to serve as the supporting structure when the ship sections are loaded on the slipway; b. According to the weight and structural type of the ship sections, select the number and location of the modified lifting beams; c. Place active piers under the lifting beam and place pads above the lifting beam. During the construction of the slipway, directly lift the ship sections onto the lifting beam, adjust their heights with pads, and place support fixtures at the bow and stern of the ship sections; d. After the ship is built, insert the box beam under both sides of the lifting beam, use the pads to plug the gap between the box beam and the lifting beam, then unload the force of the active pier and lower its height, and remove the support tooling at the bow and stern of the ship section; e. Install the traction eye plate on the first box beam and perform modeling strength verification; f. Use the traction equipment to drag the box beam to drive the ship to slide, and complete the ship towing and docking operation.

[0005] In steps a, b, c and d, the ship sections may also be replaced by the ship sections.

[0006] In the step d, after the support fixtures at the bow and stern of the ship section are removed, the box beams on the two slideways bear the weight of the entire ship.

[0007] The invention discloses a process method for ship construction and towing, which solves the problem that the supporting piers and sliding box beams are difficult to lay due to the small size and large linear shape of the ship, integrates the pier laying and launching tooling of the slipway into an integrated design, avoids the jacking of the ship by renting air bags and towing the ship into the water, saves the cost of renting air bags, optimizes the arrangement of the lifting beams, avoids the ship being reversed and repainted at the slipway at a later stage, sets the towing point on the box beam to avoid the paint damage of the outer plate of the ship, saves labor costs, shortens the service life of the floating dock, and reduces the cost of ship construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the transport and lifting beam modification of a process method for ship construction and towing of the present invention.

[0009] Figure 2 The invention discloses a side view of a ship bed construction pier laying method in accordance with a ship construction and towing process.

[0010] Figure 3 The invention discloses a top view of a ship slipway construction pier according to a ship construction and towing process method.

[0011] Figure 4 It is a cross-sectional view of a ship bed construction pier laying method of a ship construction and towing process of the present invention.

[0012] Figure 5 The present invention is a side view of a ship towing arrangement of a ship construction and towing process method.

[0013] Figure 6 The present invention is a side view of a ship towing arrangement of a ship construction and towing process method.

[0014] Figure 7 It is a cross-sectional view of a ship towing arrangement of a ship construction and towing process method of the present invention.

[0015] In the figure: 1. Lifting beam; 2. Ship section; 3. Active pier; 4. Pads; 5. Support tooling; 6. Box beam; 7. Towing eye plate. DETAILED DESCRIPTION

[0016] like Figures 1 to 7As shown, the process method for ship construction and towing includes the following steps: a. transforming the original lifting beam 1 used for module transportation into a supporting structure for the ship section 2 or the ship section when it is loaded on the slipway, and the ship section 2 can be replaced by the ship section; b. according to the weight and structural type of the ship section 2 or the ship section, reasonably selecting the number and arrangement position of the modified lifting beam 1 to avoid the lifting beam being transported backwards due to interference or repainting during the slipway stage, and the placement of the lifting beam needs to be comprehensively considered to avoid the transportation and The positions of the brackets used for the assembly, the seabed plugs in the outer bottom plate area, the seawater valve box, the anti-roll fins (for slipway installation and swing test), and the measuring equipment; c. The flexible piers 3 are arranged below the lifting beam 1, and the pads 4 are arranged above the lifting beam 1. During the slipway construction stage, the ship section 2 or the total ship section is directly hoisted and seated on the lifting beam 1, and its height is adjusted by the pads 4. The supporting tooling 5 is placed at the bow and stern of the ship section 2 or the total ship section. The lifting beam 1 has a large contact surface with the ship, including the linear part, which can reduce the number of linear supporting tooling d. After the ship is built, insert the box beam 6 under the two sides of the lifting beam 1, use the cushion 4 to plug the gap between the box beam 6 and the lifting beam 1, then unload the force of the flexible pier 3 and lower its height, remove the support tooling 5 at the bow and stern of the ship section 2 or the ship section, and the weight of the whole ship is borne by the box beam 6 on the two slideways; e. Install the traction eye plate 7 on the first section of the box beam 6 and perform the modeling strength check. This method can avoid the damage of the paint on the outer plate of the hull and greatly shorten the period of the ship occupying the floating dock; f. The box beam 6 is dragged by the traction equipment to drive the ship to slide, and the ship is towed into the dock. The process method of ship construction and towing of the present invention integrates the design of the slipway pier laying and the sliding tooling, which solves the problem of difficulty in laying the support piers and the sliding box beam due to the small size and large linear shape of the ship, saves the cost of renting airbags, optimizes the beam lifting arrangement, avoids the slipway from being reversed and repainted later, and sets the traction point on the box beam to avoid damage to the paint of the outer plate of the ship, saves labor costs, shortens the use cycle of the floating dock, and reduces the cost of ship construction.

Claims

1. A process for shipbuilding and towing, characterized in that: The following steps are involved: a. Reconstruct the lifting beams used for module transportation to serve as the supporting structure when the ship sections are loaded on the slipway; b. According to the weight and structural type of the ship sections, select the number and location of the modified lifting beams; c. Place active piers under the lifting beam and place pads above the lifting beam. During the construction of the slipway, The ship sections are directly hoisted on the lifting beams, and their height is adjusted by pads, and supporting tooling is placed at the bow and stern of the ship sections; d. After the ship is built, insert the box beam under the two sides of the lifting beam and use the pads to plug the box beam and Lift the gap under the beam, then unload the active pier and lower its height, and remove the supporting fixtures at the bow and stern of the ship section; e. Install the traction eye plate on the first box beam and perform modeling strength verification; f. Use the traction equipment to drag the box beam to drive the ship to slide, and complete the ship towing and docking operation.

2. A shipbuilding and towing process according to claim 1, characterized in that: In steps a, b, c and d, the ship sections may also be replaced by the ship sections.

3. A shipbuilding and towing process according to claim 1, characterized in that: In the step d, after the support fixtures at the bow and stern of the ship section are removed, the box beams on the two slideways bear the weight of the entire ship.

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