A method for transporting chemical tanker U-shaped sections

Abstract

This invention discloses a method for transporting U-shaped sections of chemical tankers. The method designs a special assembly tooling for transporting U-shaped sections of chemical tankers, including a transport flatbed truck, a transport gantry, end-stop channel steel, stainless steel connecting plates, pressure irons, and wooden blocks. This method is used for long-distance transport of U-shaped sections assembled from transverse bulkhead sections connected laterally with the deck sections as the base surface and carrying two opposing longitudinal bulkhead sections (P-face longitudinal bulkhead sections). This method prevents swaying caused by bumpy road sections during transport of U-shaped sections and improves the safety of U-shaped section transport.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding, and in particular to a method for transporting U-shaped sections of chemical tankers. Background Technology

[0002] Most chemical tanker sections are assembled on the slipway. However, due to the very limited space available for assembly on the slipway and the tight construction schedule, the U-shaped section, as a key section in the cargo hold area, has a significant impact on the construction cycle. Therefore, the U-shaped section is assembled off-site in the dock area, and the assembled U-shaped section is then transported to the slipway area to improve the assembly rate of the sections and shorten the construction cycle. Thus, the transportation method for large sections has become a problem to be solved.

[0003] Existing technologies only address the transportation of segmented sections; the transportation of large, complete sections has not yet been attempted. Chinese invention patent 201711383629.9 discloses a transportation device and method for curved segmented sections. This device includes a gantry, support rods, jacks, connecting rods, and a base. The base is located on the upper surface of the gantry, with a central receiving area. Adjustment holes are provided on the side walls at both ends of the base. One end of the support rod has a first fixing hole, and the other end has a first set of bolt holes. One end of the support rod is fixed to the end of the base through the first fixing hole, the end hole in the adjustment hole, and a fixing bolt. A jack is provided on the other end of the support rod. One end of the connecting rod has a second fixing hole, and the other end has a second set of bolt holes. One end of the connecting rod is fixedly connected to the inner side of the base through the second fixing hole, the inner hole in the adjustment hole, and a fixing bolt. This invention is complex to operate and is only suitable for segmented transportation; it is not suitable for transporting large, complete sections or sections with a high center of gravity during side-mounted transportation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a method for transporting U-shaped sections of chemical tankers. This method addresses the challenges of transporting U-shaped sections after they have been constructed in different locations, taking into account their large size and high center of gravity during side-mounted transport. It also improves safety during the transport process.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A method for transporting a U-shaped section of a chemical tanker, the U-shaped section of which includes a deck section, a port longitudinal bulkhead section, a starboard longitudinal bulkhead section, and a transverse bulkhead section. The method includes the following steps:

[0007] S1, the U-shaped section of the chemical tanker includes a deck section, a port longitudinal bulkhead section, a starboard longitudinal bulkhead section, and a transverse bulkhead section. The U-shaped section of the chemical tanker is assembled in reverse with the deck section as the base surface. The deck section is rotated 180° for positioning. The port longitudinal bulkhead section is hoisted onto the deck section to form an L-shaped section. The transverse bulkhead section is corner-connected to the non-structural surface of the deck section. The starboard longitudinal bulkhead section is mounted opposite to the port longitudinal bulkhead and the deck section on the other side. This forms a P-face longitudinal bulkhead section of the chemical tanker with the deck section as the base surface, transversely connecting the transverse bulkhead section, and mounting two opposite port and starboard longitudinal bulkhead sections.

[0008] S2. A special assembly tooling for transporting U-shaped sections of chemical tankers is designed. This assembly tooling includes a transport flatbed, a transport gantry, end-stop channel steel, stainless steel connecting plates, pressure irons, and wooden blocks. The gantry is evenly spaced on the platform plate of the longitudinal bulkhead section on the P side. The transport gantry has two ends at its bottom. End-stop channel steel is welded perpendicular to the bottom of the transport gantry. The end-stop channel steel connects the two ends of the transport gantry, rigidly fixing the chemical tanker U-shaped section. Wooden blocks are placed on top of the transport gantry. The top of the wooden blocks is connected to the transport base surface of the chemical tanker U-shaped section, and the bottom is connected to the transport gantry.

[0009] S3, flip the U-shaped section 90° for the first time. After the flipping is completed, with the P-side longitudinal compartment facing down, place the U-shaped section directly above the transport gantry with the P-side longitudinal compartment as the base.

[0010] S4. Stainless steel connecting plates are provided at both ends of the platform plate of the P-side longitudinal compartment, and the stainless steel connecting plates reinforce the connection between the U-shaped section and the transport gantry.

[0011] S5. Place a ballast on the P-side longitudinal compartment of the U-shaped section;

[0012] S6. Conduct a safety check on the above steps. After the check is completed, transport the U-shaped section by flatbed truck. During the transportation process, a dedicated person should be assigned to track the process to ensure safety.

[0013] As a preferred technical solution, in step S2, the position of the transport gantry on the platform of the P-side longitudinal bulkhead section is determined according to the size of the transport flatbed and the center of gravity of the U-shaped section along the width of the ship. The center of the transport gantry coincides with the center of gravity of the U-shaped section along the width of the ship. Three transport gantry are arranged along the P-side longitudinal bulkhead section at the center of gravity above, below, and at the center of gravity in the height direction of the U-shaped section. The upper and lower spacing of the transport gantry should be less than the effective transport length of the transport flatbed.

[0014] As a preferred technical solution, the two transport gantry frames, one above the other and one below the center of gravity in the height direction of the U-shaped section, are arranged symmetrically.

[0015] As a preferred technical solution, in step S2, the end retaining channel steel and the transport gantry are connected by welding.

[0016] As a preferred technical solution, in step S3, the bottom surface of the P-side longitudinal compartment is a horizontal plane.

[0017] As a preferred technical solution, in step S4, the stainless steel connecting plate is welded to the U-shaped main section and the transport gantry.

[0018] As a preferred technical solution, in step S5, the pressure iron needs to be placed away from the outfitting components on the U-shaped section.

[0019] As a preferred technical solution, the transport gantry is made of carbon steel.

[0020] This invention discloses a method for transporting chemical tanker U-shaped sections. Through practical application in shipbuilding, it has achieved the following technical effects:

[0021] (1) The present invention provides a method for transporting U-shaped sections of chemical tankers. The end-stop channel steel is used to rigidly fix the gantry, which effectively avoids the problem of asynchronous vibration of the transport gantry during the transport of U-shaped sections and can effectively reduce the shaking during the transport of U-shaped sections.

[0022] (2) The present invention provides a method for transporting U-shaped sections of chemical tankers. Placing a weight on the inside of the longitudinal bulkhead can effectively reduce the center of gravity of the section and improve the safety of transportation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a perspective view of the U-shaped section transportation method for chemical tankers according to the present invention.

[0025] Figure 2 This is a plan view of the U-shaped section transportation gantry and ballast arrangement in the U-shaped section transportation method for chemical tankers according to the present invention.

[0026] Figure 3 This invention relates to the arrangement of a U-shaped section transport gantry and pressure iron in a chemical tanker U-shaped section transport method. Figure 2 A-direction view.

[0027] Figure 4 This is a schematic diagram of the platform for arranging the U-shaped section transport gantry and ballast in a chemical tanker U-shaped section transport method according to the present invention.

[0028] Figure 5 This invention relates to the arrangement of a U-shaped section transport gantry and pressure iron in a chemical tanker U-shaped section transport method. Figure 4 View B.

[0029] The meanings of the labels in the diagram are as follows:

[0030] 1-Deck section, 2-Transverse bulkhead section, 3-P-face longitudinal bulkhead section, 4-Transport gantry, 5-End retaining channel steel, 6-Stainless steel connecting plate, 7-Pressure iron, 8-Wooden pad, U-U-shaped main section Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] This invention mainly relates to a method for transporting U-shaped sections of chemical tankers. On a chemical tanker, the U-shaped section includes a deck section 1, a port longitudinal bulkhead section, a starboard longitudinal bulkhead section, and a transverse bulkhead section 2. The U-shaped section of the chemical tanker is assembled in reverse orientation with the deck section 1 as the base surface. The deck section 1 is rotated 180° for positioning. The port longitudinal bulkhead section is hoisted onto the deck section 1 to form an L-shaped section. The transverse bulkhead section 2 is attached to the non-structural surface of the deck section 1. The starboard longitudinal bulkhead section is mounted opposite the port longitudinal bulkhead and the deck section 1, forming a P-face transverse bulkhead section 3 that is transversely connected to the deck section 1 as the base surface and carries two opposing port and starboard longitudinal bulkhead sections.

[0033] This embodiment is used for the U-shaped section transportation method of chemical tankers, such as... Figure 1As shown, the U-shaped section is flipped over and placed directly above the transport gantry 4 with the P-side bulkhead 3 as the base surface. Since the deck surface of the U-shaped section is uneven, it is unsuitable as a transport base surface. The P-side bulkhead section 3, being horizontal, is more suitable. After the first flipping of the U-shaped section, the P-side bulkhead section 3 faces downwards; therefore, the P-side bulkhead is used as the transport base surface for the U-shaped section. Due to the large number of platform plates in the U-shaped section, and based on the center of gravity of the U-shaped section along both the height and length directions, the transport gantry 4 is placed at the platform plate position of the P-side bulkhead section 3. Simultaneously, due to the complex road conditions and uneven surface during transport, and the need to cross the gantry crane tracks, and given the large size of the U-shaped section, it is advisable to install three transport gantry 4s. The position of the transport gantry 4 on the platform plate of the P-side bulkhead section 3 is determined based on the size of the transport flatbed truck and the U-shaped... The center of gravity of the main section along the width of the ship is determined. The center of the transport gantry 4 coincides with the center of gravity of the U-shaped main section along the width of the ship. Three transport gantry 4s are arranged above, below, and at the center of gravity of the U-shaped main section along the height direction of the longitudinal bulkhead 3 on the P-side. The distance between the upper and lower parts of the transport gantry 4 is less than the effective transport length of the transport flatbed. The two transport gantry 4s above and below the center of gravity of the U-shaped main section along the height direction are symmetrically arranged. The two ends of the transport gantry 4 are connected by end-stop channel steel 5. In order to prevent the transport gantry 4 from bumping due to uneven road surface during the transport of the main section and causing the U-shaped main section to sway, the transport gantry 4 is connected by end-stop channel steel to form a rigid and fixed structure. This avoids the problem of asynchronous vibration of the transport gantry 4 during the transport of the U-shaped main section and can effectively reduce the swaying during the transport of the U-shaped main section.

[0034] like Figure 2-5 As shown, a weight plate 7 is placed on the longitudinal bulkhead section 3 on the P side. Due to the large size of the U-shaped section, the center of gravity is relatively high after the section is turned over. To lower the center of gravity of the U-shaped section, a weight plate 7 should be placed on the longitudinal bulkhead section 3 on the P side. The position of the weight plate 7 should avoid the outfitting components on the U-shaped section. A wooden block 8 is placed above the transport gantry 4. The transport base surface of the U-shaped section should not be in direct contact with the transport gantry 4. The two should be in contact with each other using wooden blocks. This avoids direct contact between stainless steel and carbon steel and reduces the coefficient of friction of the contact surface, thus reducing friction. To ensure the tight connection between the U-shaped section and the transport gantry 4, the transport gantry 4 and the U-shaped section are reinforced with a stainless steel connecting plate 6.

[0035] The U-shaped section of the chemical tanker includes a deck section (1), a port longitudinal bulkhead section, a starboard longitudinal bulkhead section, and a transverse bulkhead section (2). The transportation method includes the following steps:

[0036] S1, the U-shaped section of the chemical tanker includes a deck section 1, a port longitudinal bulkhead section, a starboard longitudinal bulkhead section, and a transverse bulkhead section 2. The U-shaped section of the chemical tanker is assembled in reverse with the deck section 1 as the base surface. The deck section 1 is rotated 180° for positioning. The port longitudinal bulkhead section is hoisted onto the deck section 1 to form an L-shaped section. The transverse bulkhead section 2 is corner-connected to the non-structural surface of the deck section 1. The starboard longitudinal bulkhead section is mounted on the opposite side of the port longitudinal bulkhead and the deck section 1, forming a P-face longitudinal bulkhead section 3 of the chemical tanker with the deck section 1 as the base surface, transversely connected to the transverse bulkhead section 2, and mounted with two opposite port longitudinal bulkhead sections and the starboard longitudinal bulkhead section.

[0037] S2. A special assembly tooling for transporting U-shaped sections of chemical tankers is designed. This assembly tooling includes a transport flatbed truck, a transport gantry 4, end-stop channel steel 5, stainless steel connecting plate 6, pressure iron 7, and wooden blocks 8. The gantry 4 is evenly spaced on the platform plate of the longitudinal bulkhead section 3 on the P side. The transport gantry 4 has two ends at its bottom. The end-stop channel steel 5 is welded perpendicular to the bottom of the transport gantry 4. The end-stop channel steel 5 connects the two ends of the transport gantry 4, rigidly fixing the chemical tanker U-shaped section. The wooden blocks 8 are placed on top of the transport gantry 4. The upper part of the wooden blocks 8 is connected to the transport base surface of the chemical tanker U-shaped section, and the lower part is connected to the transport gantry 4.

[0038] S3, flip the U-shaped section 90° for the first time. After the flipping is completed, the P-side longitudinal compartment section 3 faces downward. Using the P-side longitudinal compartment section 3 as the base, place the U-shaped section directly above the transport gantry 4.

[0039] S4. Stainless steel connecting plates 6 are provided at both ends of the platform plate of the longitudinal compartment section 3 on the P side. The stainless steel connecting plates 6 reinforce the connection between the U-shaped section and the transport gantry 4.

[0040] S5. Place the pressure iron 7 on the P-side longitudinal compartment section 3 of the U-shaped main section;

[0041] S6. Conduct a safety check on the above steps. After the check is completed, transport the U-shaped section by flatbed truck. During the transportation process, a dedicated person should be assigned to track the process to ensure safety.

[0042] This invention discloses a method for transporting U-shaped sections of chemical tankers. By using end-stop channel steel to rigidly fix the masts together, the problem of asynchronous mast vibration during the transport of sections is effectively avoided, and the swaying during the transport of sections can be effectively reduced. Placing ballast irons inside the longitudinal bulkhead effectively lowers the center of gravity of the sections and improves the safety of transport.

[0043] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and various changes or modifications can be made to these embodiments without departing from the principles and essence of the present invention. Therefore, the scope of protection of the present invention is defined by the appended claims.

Claims

1. A method for transporting a U-shaped section of a chemical tanker, the U-shaped section of the chemical tanker comprising a deck section (1), a port longitudinal bulkhead section, a starboard longitudinal bulkhead section, and a transverse bulkhead section (2), characterized in that, This transportation method Includes the following steps: S1, the chemical tanker U-shaped assembly is based on the deck section (1) as the base plane and is assembled in reverse. The deck section (1) is rotated 180° for positioning. The left longitudinal bulkhead section is hoisted onto the deck section (1) to form an L-shaped section. The transverse bulkhead section (2) is corner-connected to the non-structural surface of the deck section (1). The right longitudinal bulkhead section is mounted on the other side of the left longitudinal bulkhead and the deck section (1), forming a chemical tanker U-shaped assembly with the deck section (1) as the base plane, transversely connecting the transverse bulkhead section (2) and mounting two opposite left and right longitudinal bulkhead sections. S2, a special assembly tooling for transporting chemical tanker U-shaped sections is designed. The assembly tooling includes a transport flatbed truck, a transport gantry (4), end-stop channel steel (5), stainless steel connecting plate (6), pressure iron (7), and wooden blocks (8). The transport gantry (4) is set at equal intervals on the platform plate of the P-side longitudinal bulkhead section (3). The transport gantry (4) has two ends below it. The end-stop channel steel (5) is welded perpendicular to the bottom of the transport gantry (4). The end-stop channel steel (5) connects the two ends of the transport gantry (4) to rigidly fix the chemical tanker U-shaped section. The wooden blocks (8) are placed on top of the transport gantry (4). The upper part of the wooden blocks (8) is connected to the transport base surface of the chemical tanker U-shaped section, and the lower part is connected to the transport gantry (4). S3, flip the U-shaped section 90° for the first time. After the flipping is completed, the P-side longitudinal compartment section (3) faces down. Using the P-side longitudinal compartment section (3) as the base, place the U-shaped section directly above the transport gantry (4). S4. Stainless steel connecting plates (6) are provided at both ends of the platform plate of the longitudinal compartment section (3) on the P side. The stainless steel connecting plates (6) reinforce the connection between the U-shaped section and the transport gantry (4). S5. Place a weight (7) on the longitudinal bulkhead section (3) on the P side of the U-shaped section. S6. Conduct a safety check on the above steps. After the check is completed, transport the U-shaped section by flatbed truck. During the transportation process, a dedicated person should be assigned to track the process to ensure safety.

2. The method for transporting a chemical tanker U-shaped section according to claim 1, characterized in that, In step S2, the position of the transport gantry (4) on the platform of the P-side longitudinal bulkhead section (3) is determined according to the size of the transport flatbed and the center of gravity of the U-shaped section along the width of the ship. The center of the transport gantry (4) coincides with the center of gravity of the U-shaped section along the width of the ship. Three transport gantry (4) are arranged along the P-side longitudinal bulkhead section (3) above, below and at the center of gravity in the height direction of the U-shaped section. The distance between the upper and lower parts of the transport gantry (4) is less than the effective transport length of the transport flatbed.

3. The method for transporting a chemical tanker U-shaped section according to claim 2, characterized in that, The two transport gantry frames (4) above and below the center of gravity in the height direction of the U-shaped section are arranged symmetrically.

4. The method for transporting a chemical tanker U-shaped section according to claim 1, characterized in that, In step S2, the end retaining channel steel (5) and the transport gantry (4) are connected by welding.

5. The method for transporting a chemical tanker U-shaped section according to claim 1, characterized in that, In step S3, the bottom surface of the P-side longitudinal bulkhead section (3) is a horizontal plane.

6. A method for transporting a chemical tanker U-shaped section according to claim 1, characterized in that, In step S4, the stainless steel connecting plate (6) is welded to the U-shaped section and the transport gantry (4).

7. The method for transporting a chemical tanker U-shaped section according to claim 1, characterized in that, In step S5, the pressure iron (7) must be placed away from the outfitting components on the U-shaped section.

8. The method for transporting a chemical tanker U-shaped section according to claim 1, characterized in that, The transport gantry (4) is made of carbon steel.

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