A movable deck fire attack correction aid

Abstract

The application relates to the technical field of ship deck manufacturing, in particular to a movable deck fire attack correction auxiliary tool. The tool comprises a supporting assembly installed on a movable deck, a hoisting piece arranged on the supporting assembly, a movable end of the hoisting piece being connected with the movable deck so as to exert a pulling force on the movable deck away from one side of the movable deck, and a jacking piece arranged on the movable deck, one end of the jacking piece being connected with a fixed end of a ship body and the other end of the jacking piece abutting against the movable deck so as to exert a jacking force on the movable deck away from one side of the movable deck. The tool can efficiently and stably inhibit repeated deformation.

Description

Technical Field

[0001] This application relates to the field of ship deck manufacturing technology, and in particular to an auxiliary tooling for fire-attack correction of movable decks. Background Technology

[0002] As a specialized roll-on / roll-off (Ro-Ro) vessel, the PCTC typically employs a thin-plate structure design for its movable deck to maximize vehicle loading space and reduce the vessel's weight while meeting load-bearing requirements. However, thin-plate components are susceptible to surface defects such as localized dents and wave deformation during construction and use, caused by factors such as residual welding stress, loading and unloading impacts, and hull deformation. These defects directly affect the deck's flatness, structural strength, and subsequent painting quality.

[0003] Currently, the shipbuilding industry commonly uses traditional flame heating correction techniques for leveling dented areas on thin-plate decks. These techniques include point heating, line heating, strip heating, and triangular heating. Operators apply localized heat sources to the deformed areas based on experience, utilizing the principle of thermal expansion and contraction of metals to achieve leveling.

[0004] However, the aforementioned methods, due to the free-supported state of the movable deck and the lack of sufficient rigid constraints, make it difficult to effectively control the thermal stress and phase transformation stress generated during the heating process. This leads to the correction area being prone to springback or reverse deformation after leveling, requiring repeated heating corrections. The process is complex, time-consuming, and severely restricts construction efficiency. Secondly, heating parameters largely rely on manual experience for control, and uneven heat distribution can easily cause local overheating of the plates, grain coarsening, or even surface damage. This not only reduces the correction quality but may also weaken the mechanical properties and service life of the deck. Furthermore, repeated heating exacerbates the accumulation and redistribution of residual stress within the thin plate, making the deformation pattern more complex, difficult to achieve in one step, and resulting in poor stability of the correction effect. Summary of the Invention

[0005] Therefore, it is necessary to provide an auxiliary tooling for fire attack correction of movable deck that is efficient, stable, and can effectively suppress repeated deformation.

[0006] To solve the above-mentioned technical problems, this application provides the following technical solution: A movable deck fire attack correction auxiliary tooling includes: Support components are installed on the movable deck; A lifting component is mounted on the support assembly, and the movable end of the lifting component is connected to the movable deck to apply a pulling force to the movable deck away from one side of the movable deck; The clamping element is installed on the movable deck, with one end connected to the fixed end of the hull and the other end abutting against the movable deck to apply a clamping force to the movable deck that is offset to one side from the movable deck.

[0007] Understandably, the tension applied by the lifting components and the clamping force applied by the clamping components work together to achieve bidirectional forced constraint on the concave deformation of the thin plate. During the heat treatment process, this constraint force can effectively counteract the internal stress generated by the thermal expansion and contraction of the thin plate, preventing the correction area from rebounding or repeatedly deforming after heating, thus significantly improving the stability of the correction quality and the one-time forming rate.

[0008] In one embodiment, the support assembly includes a gantry frame, one end of which abuts against a side wall of the movable deck, and the lifting device is mounted on the gantry frame.

[0009] In one embodiment, the gantry includes interconnected support beams and support vertical beams, the bottom end of the support vertical beams is connected to the movable deck, the two ends of the support beams are respectively disposed on the support vertical beams, and the lifting component is installed on the support beams.

[0010] In one embodiment, a plate is included, which is disposed between the support vertical beam and the movable deck, and the cross-sectional area of ​​the plate is larger than that of the support vertical beam.

[0011] In one embodiment, the lifting device is a hoist, the main body of which is mounted on the support assembly, the movable end of which is connected to the movable deck, and the main body hoists the movable end to apply a pulling force toward the side away from the movable deck.

[0012] In one embodiment, the sidewall of the movable deck has lashing holes, and the movable end is connected to the lashing holes.

[0013] In one embodiment, the clamping member includes a support tube and a jack, the jack being mounted on the movable deck, and the axis of the support tube being parallel to the direction of movement of the jack.

[0014] In one embodiment, an anti-tipping frame is included, which is disposed outside the support tube and the jack, and one end of the anti-tipping frame abuts against the movable deck to limit the movement of the support tube and the jack.

[0015] In one embodiment, the anti-tipping frame includes a first support plate, a second support plate, and a connecting plate. The first support plate is sleeved on the outside of the support tube, the second support plate is sleeved on the outside of the jack, and the two ends of the connecting plate are respectively connected to the first support plate and the second support plate. The second support plate abuts against the movable deck.

[0016] In one embodiment, the projection of the second support plate along the height direction is greater than the projection of the first support plate along the height direction.

[0017] Compared with existing technologies, a movable deck fire-attack correction auxiliary tooling achieves bidirectional forced constraint on the concave deformation of thin plates through the coordinated action of the tension applied by the lifting components and the clamping force applied by the clamping components. During the fire-attack heating process, this constraint force can effectively counteract the internal stress generated by the thermal expansion and contraction of the thin plate, preventing the correction area from rebounding or repeatedly deforming after heating, and significantly improving the stability of the correction quality and the one-time forming rate.

[0018] The clamping component uses the fixed end of the hull as a reaction support, generating a large clamping force, making it suitable for straightening heavy deformable parts such as movable deck beams. The lifting and clamping components can be independently adjusted in terms of force, allowing operators to flexibly adjust their respective force parameters based on the real-time deformation of the sheet metal during heating. This enables precise control of the straightening process, avoiding both insufficient straightening due to insufficient force and excessive stretching damage to the sheet metal due to excessive force. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the support component structure of an auxiliary tooling for correcting fire attack on a movable deck provided in this application.

[0021] Figure 2 A schematic diagram of the clamping component structure of an auxiliary tooling for correcting fire attack on a movable deck provided in this application.

[0022] The component labels are as follows: 1. Support components; 11. Gantry frame; 111. Support beam; 112. Support vertical beam; 2. Movable deck; 3. Lifting components; 31. Hoist; 4. Tightening components; 41. Support pipe; 42. Jack; 5. Anti-tipping frame; 51. First support plate; 52. Second support plate; 53. Connecting plate. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0028] As a specialized roll-on / roll-off (Ro-Ro) vessel, the PCTC typically employs a thin-plate structure design for its movable deck to maximize vehicle loading space and reduce the vessel's weight while meeting load-bearing requirements. However, thin-plate components are susceptible to surface defects such as localized dents and wave deformation during construction and use, caused by factors such as residual welding stress, loading and unloading impacts, and hull deformation. These defects directly affect the deck's flatness, structural strength, and subsequent painting quality.

[0029] Currently, the shipbuilding industry commonly uses traditional flame heating correction techniques for leveling dented areas on thin-plate decks. These techniques include point heating, line heating, strip heating, and triangular heating. Operators apply localized heat sources to the deformed areas based on experience, utilizing the principle of thermal expansion and contraction of metals to achieve leveling.

[0030] However, the aforementioned methods, due to the free-supported state of the movable deck and the lack of sufficient rigid constraints, make it difficult to effectively control the thermal stress and phase transformation stress generated during the heating process. This leads to the correction area being prone to springback or reverse deformation after leveling, requiring repeated heating corrections. The process is complex, time-consuming, and severely restricts construction efficiency. Secondly, heating parameters largely rely on manual experience for control, and uneven heat distribution can easily cause local overheating of the plates, grain coarsening, or even surface damage. This not only reduces the correction quality but may also weaken the mechanical properties and service life of the deck. Furthermore, repeated heating exacerbates the accumulation and redistribution of residual stress within the thin plate, making the deformation pattern more complex, difficult to achieve in one step, and resulting in poor stability of the correction effect.

[0031] Therefore, it is necessary to provide an auxiliary tooling for fire attack correction of movable deck that is efficient, stable, and can effectively suppress repeated deformation.

[0032] Please see Figures 1 to 2 This application provides an auxiliary tooling for fire-attack correction of a movable deck. Due to the characteristics of the movable deck 2 in its free state, it is prone to repeated deformation during the fire-attack correction process. The auxiliary tooling mainly includes a support assembly 1, a lifting component 3, and a clamping component 4. Through the coordinated action of the tension applied by the lifting component 3 and the clamping force applied by the clamping component 4, the deformed area of ​​the movable deck 2 is constrained in the opposite direction, thereby effectively suppressing the springback and repeated deformation of the thin plate during the fire-attack heating process and ensuring the correction quality.

[0033] In some specific embodiments of the present invention, the support assembly 1 is integrally installed on the movable deck 2, serving as the installation base for the lifting component 3. Specifically, the support assembly 1 not only needs to provide a stable fixing point for the lifting component 3, but also must maintain a reliable connection with the movable deck 2 throughout the application of force by the lifting component 3, in order to prevent the direction of the tension from changing due to the offset of the support point, thereby affecting the correction accuracy or even causing correction failure.

[0034] In one specific embodiment, the structural form of the support component 1 can be flexibly selected according to the actual working conditions and site conditions of the movable deck 2. For example, as an optional implementation, the support component 1 can adopt a bracket structure welded to the surface of the movable deck 2, forming a permanent fixed connection between the bracket base and the movable deck 2 through welding. This method has high connection strength and strong anti-slip capability, and is particularly suitable for working conditions where large tensile forces need to be applied during the correction process. As another optional implementation, the support component 1 can also adopt a detachable frame structure, for example, detachably connected to the movable deck 2 by bolts, clamps, or quick-locking devices. This method facilitates the rapid transfer and reuse of the tooling between different working areas, helping to improve the versatility and operational flexibility of the tooling. For the detachable connection method, anti-slip pads or friction patterns can be provided between the bottom of the support component 1 and the contact surface of the movable deck 2 to enhance the friction of the contact surface and prevent relative sliding during the application of force.

[0035] Support assembly 1 is positioned near the recessed area of ​​movable deck 2, and as close as possible to the connection point between lifting component 3 and movable deck 2. This arrangement allows lifting component 3 to apply tension to the deformed area with a shorter lever arm, shortening the force transmission path and reducing force loss during transmission, thus improving force transmission efficiency. Simultaneously, the shorter lever arm also means that lifting component 3 requires a smaller pulling stroke, allowing operators to more precisely control the magnitude and direction of the pulling force. Furthermore, placing support assembly 1 near the recessed area facilitates simultaneous observation of the real-time status of lifting component 3 and the heated area during fire-based correction, enabling timely adjustments to the applied force parameters and further enhancing the controllability of the correction operation.

[0036] During installation, it is essential to ensure that the bottom of support assembly 1 is in full contact with and firmly fixed to the surface of movable deck 2. To achieve this, leveling pads or adjusting shims can be installed at the bottom of support assembly 1 to accommodate any minor unevenness on the surface of movable deck 2 and ensure a good fit between the contact surfaces. If there is a gap between the bottom of support assembly 1 and movable deck 2, support assembly 1 is prone to loosening or wobbling when the lifting component 3 applies force, leading to a deviation in the direction of the pulling force or failure of force application, severely affecting the accuracy of the correction. Therefore, after the support assembly 1 is installed, a test pull should be performed to confirm that the support assembly 1 does not shift or loosen under load before proceeding with subsequent fire-based correction operations.

[0037] During the operation of the lifting component 3, the support assembly 1 bears the reaction force generated when the lifting component 3 applies force. If the structural rigidity or material strength of the support assembly 1 is insufficient, it may be deformed or damaged by bending, twisting, or even breaking after being subjected to force, which will not only affect the correction quality but may also cause safety accidents. Therefore, the support assembly 1 is preferably made of high-strength steel, and its connection nodes should be equipped with reinforcing ribs or thickened plates to ensure that the support assembly 1 maintains structural integrity and positional stability throughout the correction process, providing a safe and reliable foundation for fire attack correction.

[0038] In some specific embodiments, the support assembly 1 includes a gantry frame 11, one end of which, near the movable deck 2, abuts against the side wall of the movable deck 2, and the lifting component 3 is mounted on the gantry frame 11. The gantry frame 11, as a simple and high-load-bearing support structure, serves as the mounting carrier for the lifting component 3 in this embodiment, providing a stable and reliable support foundation for the lifting component 3.

[0039] The two sides of the gantry 11 abut against the side walls of the movable deck 2, thus providing effective restraint and support in both the horizontal and vertical directions. Specifically, the bottom end of the gantry 11 contacts the surface of the movable deck 2, and the large contact surface evenly transmits the reaction force generated when the lifting component 3 applies force to the movable deck 2, avoiding secondary deformation or structural damage to the movable deck 2 due to localized force concentration. At the same time, the abutment of the two side walls of the gantry 11 against the side walls of the movable deck 2 effectively restricts the horizontal displacement of the gantry 11, preventing lateral sliding or overturning of the gantry 11 during the application of force by the lifting component 3, and ensuring the accuracy and stability of the force application direction. The gantry 11 is preferably constructed of welded steel profiles, possessing high structural rigidity and bending strength, capable of withstanding the bending moment and shear force generated by the lifting component 3 under maximum working load without significant deformation.

[0040] Furthermore, the gantry frame 11 includes interconnected supporting horizontal beams 111 and supporting vertical beams 112. The bottom end of the supporting vertical beams 112 is connected to the movable deck 2, and both ends of the supporting horizontal beams 111 are respectively mounted on the supporting vertical beams 112. The lifting component 3 is installed on the supporting horizontal beams 111. Specifically, the supporting horizontal beams 111 extend horizontally along the width or length direction of the movable deck 2. Two supporting vertical beams 112 are provided, respectively vertically mounted at both ends of the supporting horizontal beams 111. The supporting horizontal beams 111 and the supporting vertical beams 112 together form a portal frame structure, which is symmetrical and evenly stressed. The top end of the supporting vertical beams 112 is fixedly connected to the end of the supporting horizontal beams 111 by welding or bolts. The bottom end of the supporting vertical beams 112 serves as the supporting foot of the entire gantry frame 11, abutting against the surface of the movable deck 2.

[0041] Two supporting vertical beams 112 are located on either side of the deformation area of ​​the movable deck 2, spanning above the deformation area, so that the gantry 11 as a whole crosses the recessed position to be corrected. The lifting component 3 is installed in the middle of the supporting horizontal beam 111, with its movable end extending vertically downwards and connecting to the deformation area of ​​the movable deck 2. This arrangement ensures that the force applied by the lifting component 3 is exactly opposite to the direction of the depression in the deformation area, with the tension acting vertically upwards on the recessed area, resulting in the shortest force path and the highest force transmission efficiency. The supporting horizontal beam 111, as the direct load-bearing component of the lifting component 3, should have its cross-sectional dimensions and wall thickness designed according to the maximum load of the lifting component 3, ensuring that the supporting horizontal beam 111 has sufficient bending stiffness and safety margin when bearing the weight of the lifting component 3 and its reaction force. The supporting vertical beams 112, as the main force-transmitting components, transfer the load from the supporting horizontal beam 111 downwards to the movable deck 2. Their axial direction is basically consistent with the load direction, mainly bearing compressive stress, which is beneficial for fully utilizing the load-bearing capacity of the steel material.

[0042] Furthermore, it also includes a plate disposed between the supporting vertical beam 112 and the movable deck 2, the plate having a cross-sectional area larger than that of the supporting vertical beam 112. The plate serves as an intermediate force-transmitting component between the bottom end of the supporting vertical beam 112 and the movable deck 2.

[0043] Because the bottom cross-sectional area of ​​the supporting vertical beam 112 is relatively small, if it directly contacts the surface of the movable deck 2, the large compressive stress generated by the lifting component 3 will create significant local pressure on the surface of the movable deck 2. This can easily cause indentations, dents, or even local collapse damage on the surface of the movable deck 2. This not only affects the surface quality of the movable deck 2 but may also create new stress concentration points due to local damage, weakening the structural strength of the movable deck 2. By setting a plate with a cross-sectional area larger than that of the supporting vertical beam 112, the contact area between the supporting vertical beam 112 and the movable deck 2 is effectively increased. According to the principle of pressure, under a constant force, increasing the contact area can significantly reduce the compressive stress on the surface of the movable deck 2, thereby avoiding indentation or dent damage and protecting the integrity and flatness of the movable deck 2. The plate is preferably a rectangular or circular steel plate with a certain thickness. Its lower surface is flat and forms a surface contact with the surface of the movable deck 2. Its upper surface is fixedly connected to the bottom end of the supporting vertical beam 112, for example, by welding or bolting.

[0044] The thickness of the plates should ensure that they do not bend or deform under pressure, thus ensuring uniform pressure transmission. Furthermore, the arrangement of the plates facilitates the addition of shims or adjusting blocks between the bottom of the support beam 112 and the movable deck 2 for fine-tuning the installation height or levelness of the gantry 11, further improving the installation accuracy and applicability of the tooling. Through the coordinated arrangement of the gantry 11 and the plates, the support assembly 1 provides a stable, safe, and undamaged support foundation for the lifting components 3, effectively ensuring the smooth progress of the fire-attack correction operation.

[0045] The lifting component 3 is mounted on the support assembly 1. Specifically, the main body of the lifting component 3 is fixedly connected to the support assembly 1, while the movable end of the lifting component 3 is connected to the movable deck 2. The lifting component 3 is used to apply a pulling force to the movable deck 2, causing it to deviate to one side from the movable deck 2.

[0046] It is understandable that "deviating from the movable deck 2 and deviating to one side" means that the direction of the pulling force applied by the lifting component 3 to the movable deck 2 is opposite to the direction of deformation and depression of the movable deck 2. For example, when a certain area of ​​the movable deck 2 undergoes downward deformation, the lifting component 3 connects to the appropriate position of the depressed area through its movable end and applies an upward pulling force, thereby stretching the depressed area upward to correct the deformation. The magnitude of the force applied by the lifting component 3 can be adjusted according to the degree of deformation and material properties of the movable deck 2.

[0047] Preferably, the lifting component 3 is a manual or electric hoist 31, and the operator can flexibly adjust the pulling force according to the actual working conditions until the flatness of the movable deck 2 meets the requirements for fire-attack correction. There are various ways to connect the movable end of the lifting component 3 to the movable deck 2, such as by welding, snap-fit ​​connection, bolt connection or hooking, as long as it can be ensured that the movable end will not detach from the movable deck 2 during the application of force.

[0048] In a specific embodiment, the lifting component 3 is an electric hoist 31. The main body of the electric hoist 31 is mounted on the support assembly 1, and the movable end of the electric hoist 31 is connected to the movable deck 2. The main body applies a pulling force towards the side deviating from the movable deck 2 by lifting the movable end. Specifically, the electric hoist 31 is electrically driven, and the operator only needs to control the switch to raise, lower, and stop the movable end, eliminating the need for manual pulling of chains or ropes, greatly reducing the operator's labor intensity. Simultaneously, the electric hoist 31 applies force smoothly and continuously, avoiding impact loads caused by uneven force application during manual operation, thereby reducing instantaneous impact on the movable deck 2 and protecting the thin-plate structure from damage. More importantly, the electric hoist 31 is typically equipped with an overload protection device and a limit switch. When the pulling force exceeds a preset safety value, the overload protection device can automatically cut off the power and stop applying force, preventing excessive stretching or even tearing damage to the movable deck 2 due to excessive pulling force, thus improving the safety of the correction operation. There are multiple ways to connect the main body of the electric hoist 31 to the support component 1. For example, it can be fixedly connected to the support beam 111 by means of eye bolts, U-shaped buckles or hooks to ensure that the main body does not move relative to the support component 1 under stress.

[0049] Furthermore, the movable end of the electric hoist 31 is connected to the movable deck 2. In order to facilitate connection and avoid additional damage to the structure of the movable deck 2, in this embodiment, the side wall of the movable deck 2 is provided with a binding hole, and the movable end is connected to the binding hole.

[0050] Specifically, the lashing holes are existing structural holes on the movable deck 2 of the PCTC car carrier, originally used for lashing and securing transport vehicles, and are a standard feature of the movable deck 2 itself. This embodiment makes full use of this existing structural feature, directly hooking or inserting the movable end of the electric hoist 31 into the lashing holes, eliminating the need to create additional connecting holes or weld ear plates on the movable deck 2. This simplifies the tooling installation process, improves work efficiency, and avoids structural damage or stress concentration to the movable deck 2 caused by adding new openings or welding heat input, thus helping to maintain the original structural integrity of the movable deck 2.

[0051] Preferably, the movable end can be connected to the binding hole using a high-strength shackle or a special hook, with the size of the shackle or hook matching the diameter of the binding hole. This ensures a secure connection and facilitates quick disassembly after correction. In this embodiment, the operator can select the binding hole closest to the deformed area based on the specific location of the recessed area on the movable deck 2, so that the pulling point of the electric hoist 31 is as close as possible to the center of deformation, shortening the force transmission distance and improving the correction effect. When the recessed area is large, multiple electric hoists 31 can be connected to multiple binding holes simultaneously, with each electric hoist 31 working together to achieve uniform correction of the large-area deformed area. Through the above-mentioned matching of the electric hoist 31 and the binding hole, effective transmission and precise control of the pulling force are ensured, and the tooling can be quickly installed and disassembled, further improving the overall efficiency and convenience of the fire-attack correction operation.

[0052] In some specific embodiments, the clamping member 4 is disposed on the movable deck 2, with one end connected to the fixed end of the hull and the other end abutting against the movable deck 2. The clamping member 4 serves as an auxiliary force-applying component, used to apply a clamping force to the movable deck 2 away from one side of the movable deck 2, so as to provide a continuous and directionally controllable mechanical thrust to the deformed area during the fire attack correction process.

[0053] Specifically, when the movable deck 2 is depressed downwards, the lifting component 3 applies an upward pulling force from above; however, when the movable deck 2 is convex upwards, the clamping component 4 applies a downward clamping force from above to the deformed area of ​​the movable deck 2, thereby significantly enhancing the correction effect on the depression deformation.

[0054] Compared to traditional solutions that rely on a single force application method, this embodiment, through the coordinated use of tension and clamping forces, can form a more effective bidirectional constraint on the deformation area of ​​the thin plate during the fire-heating process. This effectively suppresses the rebound and repeated deformation caused by stress release during the heating and cooling process, further improving the stability and reliability of the correction quality.

[0055] In this embodiment, one end of the clamping member 4 needs to be connected to the fixed end of the hull to obtain reliable reaction force support. The so-called "fixed end of the hull" refers to the fixed structure in the hull structure that remains stationary relative to the movable deck 2, specifically including but not limited to the main beams, beams, bulkheads, deck longitudinal girder, or other fixed support components with sufficient structural rigidity. These fixed ends are all load-bearing components in the hull structure, with large cross-sectional dimensions and high structural strength, capable of withstanding the huge reaction force generated by the clamping member 4 during the application of force without significant deformation or displacement.

[0056] The connection method between the clamping component 4 and the fixed end can be flexibly selected according to the actual working conditions. For example, it can be achieved by welding, bolting, clamping, or abutting. When using the abutting method, the end of the clamping component 4 can directly press against the side wall of the fixed end, using the structural rigidity of the fixed end to form a reaction force support. When using bolting or clamping, the clamping component 4 can be detachably fixed to the fixed end, facilitating the transfer and reuse of the tooling between different working areas. Regardless of the connection method used, it must be ensured that the connection does not loosen or slip during the application of force to the clamping component 4, so as to ensure the stability of the clamping force direction and the continuity of the force application.

[0057] The other end of the clamping member 4 abuts against the movable deck 2, and its abutment position can be flexibly selected according to the actual deformation of the movable deck 2. In this embodiment, preferably, the abutment position is set in the recessed deformation area of ​​the movable deck 2. For example, when the movable deck 2 is recessed downwards, which is the upper surface of the movable deck 2, the clamping member 4 applies a pushing force from the back of the recessed area, pushing the recessed area outwards; by setting the abutment position on the back of the recessed deformation area, the clamping force can act on the deformation area as directly as possible, shortening the force transmission path, reducing the loss of force during transmission, and improving the efficiency of force utilization and correction.

[0058] A pad or gasket can be installed at the contact point between the clamping member 4 and the movable deck 2 to increase the contact area, reduce local pressure, and prevent indentations or damage to the surface of the movable deck 2 due to concentrated force. During the fire-attack correction process, the operator can adjust the force applied by the clamping member 4 at any time according to the temperature changes and deformation recovery of the heated area, so that the clamping force matches the heating process, ensuring that the movable deck 2 remains under controlled constraint throughout the entire correction cycle.

[0059] In this embodiment, the force applied by the clamping member 4 is also directed away from the deviation direction of the movable deck 2. For example, when a certain area of ​​the movable deck 2 undergoes downward deformation, the clamping member 4 applies an upward clamping force to that area, pushing the depressed area upward to the designed plane position. The magnitude of the clamping force should be reasonably set according to the thickness of the movable deck 2, the degree of deformation, and the material characteristics. It must be sufficient to overcome the internal stress in the deformed area and push the plate back to the plane position, while avoiding excessive clamping force that could cause the plate to deform in the opposite direction. Preferably, the clamping member 4 can be a hydraulic jack 42, a screw jack 42, or a pneumatic pusher, etc., with adjustable force application function, so that the operator can adjust the magnitude of the clamping force at any time according to the actual working conditions during the operation, and achieve precise control of the correction process. Through the synergistic effect of the above-mentioned tension and clamping forces, this embodiment can form a comprehensive constraint and correction on the deformed area of ​​the movable deck 2, significantly improving the problem of repeated deformation caused by heating the thin plate in a free state in traditional methods.

[0060] Furthermore, the tension applied by the lifting component 3 and the clamping force applied by the clamping component 4 work together to force the deformed area of ​​the movable deck 2 to a position close to the design plane before heating, through the combined action of the tension and clamping forces during the fire-attack correction process. Then, the fire-attack heating is carried out, and the stress release and shape fixation of the plate are completed under the constraint state by utilizing the principle of thermal expansion and contraction. This effectively avoids the problem of repeated deformation caused by heating in a free state in traditional methods, and significantly improves the correction efficiency and correction quality.

[0061] Specifically, the clamping component 4 includes a support pipe 41 and a jack 42. The jack 42 is installed on the movable deck 2, and the axis of the support pipe 41 is parallel to the direction of movement of the jack 42. Specifically, the support pipe 41, as a force transmission component, has an overall elongated hollow tube structure, made of high-strength seamless steel pipe, and possesses high axial compressive strength and bending stiffness. The jack 42, as a force source, has its base installed at an appropriate position on the movable deck 2, preferably fixed to the movable deck 2 by welding or bolting to ensure that the jack 42 will not shift its position due to force during operation. One end of the support pipe 41 abuts against the fixed end of the hull, and the other end abuts against the piston rod end of the jack 42 or forms a mating connection through a connecting sleeve. The piston rod of the jack 42 extends in the same direction as the axis of the support tube 41, so that the jacking force output by the jack 42 can be transmitted in a straight line along the axis of the support tube 41, avoiding the generation of lateral component force due to directional deviation, which would affect the jacking efficiency.

[0062] During operation, the operator drives the jack 42, whose piston rod extends outward and pushes the support pipe 41. The support pipe 41 transmits the pushing force axially to the fixed end of the hull. Since the fixed end of the hull is a stationary rigid structure, it generates a reaction force after being pushed by the support pipe 41. This reaction force is transmitted back to the jack 42 through the support pipe 41, and then transmitted to the movable deck 2 through the base of the jack 42, thereby applying a tightening force to the movable deck 2 in a direction opposite to the deformation direction.

[0063] During this process, the support pipe 41, acting as a pressure-bearing component, bears pressure from the jack 42 and the fixed end of the hull at both ends, and is under axial compression. The support pipe 41 is preferably a rigid pipe, and its wall thickness and outer diameter should be designed with strength verification based on the maximum jacking force to ensure that it only undergoes slight elastic compression deformation under large axial pressure without bending deformation or instability, thus ensuring that the direction of the tightening force remains stable on the preset axis. Furthermore, flanges or ball joints can be installed at both ends of the support pipe 41 to accommodate possible slight angular deviations between the fixed end of the hull and the end of the jack 42, ensuring uniform force distribution. Through the cooperation of the support pipe 41 and the jack 42, the tightening component 4 can provide a stable, controllable, and precisely directional tightening force to the movable deck 2, which, together with the pulling force of the lifting component 3, effectively corrects the deformation of the thin plate.

[0064] In some embodiments, the auxiliary tooling further includes an anti-tipping frame 5, which is disposed on the outside of the support pipe 41 and the jack 42, and one end of the anti-tipping frame 5 abuts against the movable deck 2 to limit the movement of the support pipe 41 and the jack 42.

[0065] During the operation of the clamping component 4, the support pipe 41 bears a large axial pressure. Its two ends abut against the fixed end of the hull and the jack 42, respectively, making it a typical compression member. When the length of the support pipe 41 is long or the jacking force is large, if there is a lack of effective lateral restraint, the support pipe 41 is very prone to lateral bending or even overall tilting under pressure. Especially at the moment when the jack 42 starts or stops, due to the sudden change in load, the support pipe 41 may experience impact lateral displacement.

[0066] Meanwhile, during operation, when the piston rod of jack 42 extends significantly, the overall center of gravity of jack 42 changes. If the base is not securely fixed or the force is uneven, jack 42 itself may tilt or even pop out of the movable deck 2, causing not only a momentary failure of the tightening force but also potentially serious safety accidents such as crushing or crushing injuries to operators. By setting up an anti-tipping frame 5, both support pipe 41 and jack 42 are simultaneously constrained inside the anti-tipping frame 5. Even if both tend to shift laterally during the force process, they will be blocked and restricted by the side wall of the anti-tipping frame 5, thereby effectively preventing the support pipe 41 from tilting laterally and the jack 42 from tilting and popping out. This greatly improves the safety of the tooling and provides a reliable safety guarantee for fire attack correction operations.

[0067] In some embodiments, the anti-tipping frame 5 specifically includes a first support plate 51, a second support plate 52, and a connecting plate 53. The first support plate 51 is sleeved on the outside of the support tube 41, the second support plate 52 is sleeved on the outside of the jack 42, and the two ends of the connecting plate 53 are fixedly connected to the first support plate 51 and the second support plate 52 respectively, with the second support plate 52 abutting against the movable deck 2.

[0068] In detail, the first support plate 51 is a plate-shaped component with a central through hole. The shape and size of the central through hole are adapted to the outer diameter of the support tube 41. The support tube 41 passes through the central through hole, so that the first support plate 51 is fitted around the outer periphery of the support tube 41. A guide ring or a friction-reducing bushing may be provided on the inner wall of the central through hole of the first support plate 51 to reduce the friction between the support tube 41 and the first support plate 51 when sliding axially, so as to ensure that the support tube 41 can freely extend and retract axially without obstruction.

[0069] Meanwhile, the inner diameter of the central through hole is slightly larger than the outer diameter of the support tube 41, ensuring that the support tube 41 can pass through smoothly, and the gap between the two provides radial restraint for the support tube 41, preventing large-scale lateral swaying. The second support plate 52 is a plate-shaped component sleeved on the outside of the jack 42, which also has a central through hole. The jack 42 passes through this central through hole. The second support plate 52 provides radial restraint to the cylinder part of the jack 42, preventing the jack 42 from tilting due to uneven force during operation. The bottom of the second support plate 52 abuts against the surface of the movable deck 2, serving as the supporting foundation for the entire anti-tipping frame 5.

[0070] The connecting plate 53 extends along the relative directions of the first support plate 51 and the second support plate 52, and its two ends are fixedly connected to the side walls of the first support plate 51 and the second support plate 52, respectively. The connection method is preferably welding or bolting. There can be one or more connecting plates 53. When multiple connecting plates 53 are provided, each connecting plate 53 is preferably evenly distributed along the circumference of the first support plate 51 and the second support plate 52 to ensure the uniformity of connection strength. Through the cooperation of the first support plate 51 and the second support plate 52, the support pipe 41 and the jack 42 are connected as a whole, and their relative positions are effectively maintained during operation. Even when subjected to lateral forces, the anti-tipping frame 5 as a whole can transfer the lateral forces to the movable deck 2 through the contact relationship between the second support plate 52 and the movable deck 2, thereby maintaining its own stability.

[0071] The projection of the second support plate 52 along the height direction is greater than that of the first support plate 51 along the height direction. Since the second support plate 52 needs to abut against the movable deck 2 to provide overall support and limit movement, the size of its projected area directly determines the overall support stability of the anti-tipping frame 5 on the movable deck 2. When the second support plate 52 has a larger projected area, its contact area with the movable deck 2 is larger, which can effectively disperse the loads borne by the anti-tipping frame 5 in all directions, reduce the local compressive stress on the surface of the movable deck 2, and at the same time increase the grip and anti-overturning moment of the anti-tipping frame 5 on the movable deck 2.

[0072] When the jack 42 pushes the support pipe 41, the anti-tipping frame 5 is subjected to the reverse thrust and possible lateral force from the jack 42. If the projected area of ​​the second support plate 52 is too small, the anti-tipping frame 5 is prone to lateral slippage or overall overturning under force, thus losing its limiting function for the support pipe 41 and the jack 42. In this embodiment, by setting the projected area of ​​the second support plate 52 to be larger than that of the first support plate 51, the center of gravity of the anti-tipping frame 5 is lower and the support surface is wider, which effectively improves the anti-tipping and anti-slip capabilities of the anti-tipping frame 5. Even under the full load of the heavy-duty jack 42, the anti-tipping frame 5 can still maintain a stable and reliable limiting state, further improving the overall safety and reliability of the tooling and ensuring that the fire-attack correction operation can be carried out safely and smoothly.

[0073] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. An auxiliary tooling for correcting fire attacks on movable decks, characterized in that, include: Support assembly (1) is installed on the movable deck (2); A lifting component (3) is mounted on the support assembly (1). The movable end of the lifting component (3) is connected to the movable deck (2) to apply a pulling force to the movable deck (2) away from the movable deck (2) to one side. The clamping element (4) is installed on the movable deck (2), with one end connected to the fixed end of the hull and the other end abutting against the movable deck (2) to apply a clamping force to the movable deck (2) away from the movable deck (2) and offset to one side.

2. The auxiliary tooling for correcting fire attack on movable decks according to claim 1, characterized in that, The support assembly (1) includes a gantry (11), one end of which near the movable deck (2) abuts against the side wall of the movable deck (2), and the hoisting component (3) is mounted on the gantry (11).

3. The auxiliary tooling for correcting fire attack on the movable deck according to claim 2, characterized in that, The gantry (11) includes a support beam (111) and a support vertical beam (112) connected to each other. The bottom end of the support vertical beam (112) is connected to the movable deck (2). The two ends of the support beam (111) are respectively set on the support vertical beam (112). The hoisting component (3) is installed on the support beam (111).

4. The auxiliary tooling for correcting fire attack on the movable deck according to claim 3, characterized in that, Includes a plate disposed between the supporting vertical beam (112) and the movable deck (2), wherein the cross-sectional area of ​​the plate is larger than the cross-sectional area of ​​the supporting vertical beam (112).

5. The auxiliary tooling for correcting fire attack on movable decks according to claim 1, characterized in that, The hoisting component (3) is a hoist (31). The main body end of the hoist (31) is installed on the support assembly (1). The movable end of the hoist (31) is connected to the movable deck (2). The main body end hoists the movable end and applies a pulling force toward the side away from the movable deck (2).

6. The auxiliary tooling for correcting fire attack on the movable deck according to claim 5, characterized in that, The movable deck (2) has lashing holes on its side wall, and the movable end is connected to the lashing holes.

7. The auxiliary tooling for correcting fire attack on movable decks according to claim 1, characterized in that, The clamping component (4) includes a support tube (41) and a jack (42). The jack (42) is installed on the movable deck (2). The axis of the support tube (41) is parallel to the direction of movement of the jack (42).

8. The auxiliary tooling for correcting fire attack on the movable deck according to claim 7, characterized in that, Includes an anti-tipping frame (5), which is disposed outside the support tube (41) and the jack (42), and one end of the anti-tipping frame (5) abuts against the movable deck (2) to limit the movement of the support tube (41) and the jack (42).

9. The auxiliary tooling for correcting fire attack on the movable deck according to claim 8, characterized in that, The anti-tipping frame (5) includes a first support plate (51), a second support plate (52) and a connecting plate (53). The first support plate (51) is sleeved on the outside of the support tube (41), the second support plate (52) is sleeved on the outside of the jack (42), and the two ends of the connecting plate (53) are connected to the first support plate (51) and the second support plate (52) respectively. The second support plate (52) abuts against the movable deck (2).

10. The auxiliary tooling for correcting fire attack on the movable deck according to claim 9, characterized in that, The projection of the second support plate (52) along the height direction is greater than the projection of the first support plate (51) along the height direction.

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