A hull cutting device and a cutting method thereof

Abstract

The present application relates to the technical fields of shipbuilding, and discloses a hull cutting device and a cutting method thereof. The hull cutting device comprises a guide rail, a moving structure, a first cutting member and a second cutting member. The guide rail is installed on a first hull section or a second hull section and extends along the length direction of a cutting line. The moving structure is movably installed on the guide rail. A support base is fixed on the moving structure. At least part of the support base is arranged on both sides of a closing opening. The first cutting member is installed on the support base and arranged on the left side of the closing opening for cutting the first hull section. The second cutting member is installed on the support base and arranged on the right side of the closing opening for cutting the second hull section. The present application solves the technical problem that the end face of the plate after cutting deviates from the designed position due to the layout error of the guide rail in the prior art, and the plate spacing is too large or too small in the local closing opening.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to a hull cutting device and its cutting method. Background Technology

[0002] To ensure that the overall length of the hull meets the specifications, a certain amount of machining allowance is usually reserved along the length of the ship on the outer plates at both ends of the hull sections during the construction of the hull sections. When the hull sections are assembled later, the two hull sections are first pulled together and positioned. Then, the size of the joint between the adjacent hull sections is measured, and the outer plates that need to be removed from the outer plates of each section at the joint are determined. Then, the cutting line is drawn according to the outer plates that need to be removed, and the cutting tool is used to cut along the cutting line to remove the excess outer plates on each hull section, so as to ensure that the overall length of the hull meets the design drawings and specifications. In the existing technology, shipyards mainly use rail-type cutting devices to cut the excess outer plates of hull sections.

[0003] Chinese invention patent CN120170197A discloses a lightweight track-type three-dimensional cutting device, including a guide rail, a cutting host, and a cutting torch. The cutting host is slidably mounted on the guide rail, and the cutting torch is mounted on one side of the cutting host. In use, the guide rail is placed along the length of the cutting line and magnetically fixed to the hull section by an electromagnet. The cutting torch is located on the side of the cutting host near the closure opening, with its cutting end abutting against the cutting line of the hull section's outer plate. When the cutting host moves along the guide rail, it drives the cutting torch to move along the cutting line for cutting. After cutting the outer plate of the section on one side of the closure opening, the cutting device then cuts the outer plate of the section on the other side of the closure opening.

[0004] However, during the cutting process, guide rails need to be installed on the segmented outer plates on both sides of the closure. There is a certain installation error in the installation of the two guide rails, which causes the actual cutting trajectory of the cutting torch to deviate from the preset cutting line. After cutting, the end face of the segmented outer plates deviates from the design position, resulting in the outer plate spacing being too large or too small at some positions of the closure. In the subsequent closure welding process, the closure weld filling the closure will form stress concentration at the positions where the outer plate spacing is too large or too small, reducing the strength of the closure weld. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that, in the prior art, when cutting the excess outer plate at the closure joint, the layout error of the guide rail causes the end face of the cut outer plate to deviate from the design position, resulting in the outer plate spacing being too large or too small in some areas at the closure joint. During subsequent closure welding, stress concentration occurs in the closure weld at the location where the outer plate spacing is too large or too small, reducing the strength of the closure weld.

[0006] To solve the above-mentioned technical problems, the present invention provides a hull cutting device for cutting a first hull section and a second hull section located on the left and right sides of the closure opening, respectively, comprising: The guide rail is installed on the first or second hull section and extends along the length of the cutting line. A movable structure is movably mounted on a guide rail, and a support base is fixed on the movable structure. At least a portion of the support base is located on both sides of the closing opening. The first cutting component is installed on the support base and is located on the left side of the closure opening. It is used to cut the first hull section. The second cutting component is installed on the support base and is located on the right side of the closure opening. It is used to cut the second hull section.

[0007] Preferably, the support base includes a first link and a second link fixed to the movable structure. The first link and the second link are arranged at intervals along the length of the guide rail, and both the first link and the second link extend in the left-right direction. A first sliding member is slidably mounted on the first connecting rod, and a first cutting member is mounted on the first sliding member; a second sliding member is slidably mounted on the second connecting rod, and a second cutting member is mounted on the second sliding member.

[0008] Preferably, the first slider includes: The first sliding sleeve is slidably fitted onto the first connecting rod, and the first cutting element is installed on the first sliding sleeve; The first sliding sleeve has an opening on one side that extends along the axial direction of the first connecting rod. A connecting plate is fixed on each side of the first sliding sleeve, and the two connecting plates are arranged at intervals relative to each other. Tighten the bolts, which pass through the two connecting plates; The first driving component is used to drive the first sliding sleeve to slide along the axial direction of the first connecting rod; The structure of the second slider is the same as that of the first slider. In the second slider: The first sliding sleeve is slidably mounted on the second connecting rod, and the second cutting element is installed on the first sliding sleeve with its opening extending along the axial direction of the second connecting rod; the first driving element is used to drive the first sliding sleeve to slide along the axial direction of the second connecting rod.

[0009] Preferably, a groove is provided on the side of the first link / second link near the opening, and the groove extends along the axial direction of the first link / second link; An insert plate is provided between the two connecting plates. One side of the insert plate passes through the opening and is inserted into the groove. The locking bolt passes through the two connecting plates and the insert plate.

[0010] Preferably, both the first link and the second link are provided with racks extending along their length direction; Each first sliding sleeve has a window on its side wall for exposing the rack; Each first driving component includes a rotating handle and a gear fixed to the end of the rotating handle; The rotating handle is rotatably mounted on the outside of the first sliding sleeve. The rotating handle extends tangentially along the first connecting rod / second connecting rod. The end of the rotating handle with a gear extends to the window, and the gear meshes with the rack.

[0011] Preferably, each of the first sliding sleeves is fixed with an adjustment component, the adjustment component comprising: The first slide rail has a first slide groove on it; The first lead screw is rotatably installed in the first slide groove; The first slider is threadedly mounted on the first lead screw, and the first / second cutting component is mounted on the first slider; Drive the first lead screw to rotate so that the first cutting component abuts against / detaches from the first hull section, or drives the second cutting component abuts against / detaches from the second hull section.

[0012] Preferably, the adjustment component further includes: The second slide rail has a second slide groove extending in the left and right direction, and the first cutting element / second cutting element is installed on the second slide rail; The second lead screw extends in the left and right direction and is rotatably installed in the second slide groove. The second slider is threaded onto the second lead screw, and the second slider is fixedly connected to the first slider.

[0013] Preferably, a rotating assembly is installed on the second slide rail, the rotating assembly including an inner cylinder, an outer cylinder and a first fastener; The inner cylinder is fixed on the second slide rail and extends along the length of the guide rail. The outer cylinder is rotated and fitted onto the inner cylinder. The first or second cutting piece is fixedly installed on the outer cylinder. The first fastener passes through the outer cylinder and abuts against the inner cylinder.

[0014] Preferably, multiple magnetic seats are fixed on the guide rail, and the multiple magnetic seats are arranged at intervals along the length of the guide rail. Each magnetic seat is magnetically connected to the first hull section or the second hull section.

[0015] This invention proposes a cutting method for the above-mentioned hull cutting device, comprising the following steps: S1. Install guide rails on the first or second hull section so that the guide rails extend along the length of the cutting line. S2. Adjust the left and right positions of the first and second cutting parts by the first driving component so that the first and second cutting parts are close to the cutting line; S3. Rotate the outer cylinder to adjust the cutting angle of the first and second cutting parts; S4. Rotate the second lead screw to adjust the left and right positions of the first and second cutting parts so that the first and second cutting parts are aligned with the cutting lines on the corresponding sides. S5. Rotate the first lead screw so that the first cutting piece abuts against the first hull section and the second cutting piece abuts against the second hull section; S6. Drive the moving structure to move along the guide rail to drive the first cutting component and the second cutting component to move and cut along the cutting line.

[0016] Compared with the prior art, the hull cutting device and cutting method of this invention have the following advantages: This invention discloses a hull cutting device and method. A guide rail is installed on a single-sided hull section. The support base of a movable structure extends horizontally to the other side of the closure joint. A first cutting component is located on the left side of the closure joint, and a second cutting component is located on the right side. Both the first and second cutting components are integrated on the same support base and move synchronously along the guide rail with the movable structure. While the movable structure moves, the first and second cutting components cut the outer plates on both sides of the closure joint. In this embodiment, the first and second cutting components use the same guide rail as their motion reference, eliminating the accumulation of installation errors caused by two independently laid guide rails, ensuring the accuracy of the cutting trajectory of the outer plates on both sides of the closure joint. Simultaneously, the distance between the first and second cutting components in the left-right direction remains constant, ensuring a constant spacing between the outer plates at the closure joint after cutting, avoiding problems such as excessively large or small spacing between outer plates in certain areas of the closure joint. In the subsequent welding process, the weld section filled in the closure joint is evenly distributed, and there will be no areas of abnormal weld thickness due to abrupt changes in the spacing of the outer plates. This can effectively avoid local stress concentration in the weld and improve the overall strength of the closure weld. Attached Figure Description

[0017] Figure 1 This is a diagram showing the arrangement of the first and second hull sections according to an embodiment of the present invention. Figure 2 This is a top view of the hull cutting device according to an embodiment of the present invention; Figure 3 This is an embodiment of the present invention. Figure 2 Enlarged view of point A; Figure 4 This is an embodiment of the present invention. Figure 3 BB cross-section; Figure 5 This is a cross-sectional view of the first driving component according to an embodiment of the present invention; Figure 6 This is an embodiment of the present invention. Figure 4 CC cross-sectional view of the adjustment component.

[0018] In the diagram, 1. Guide rail; 2. Moving structure; 21. Support base; 211. First connecting rod; 2111. Rack; 212. Second connecting rod; 3. First cutting component; 4. Second cutting component; 5. First sliding component; 51. First sliding sleeve; 511. Connecting plate; 513. Insert plate; 514. Window; 515. Fixed sleeve; 516. Mounting sleeve; 52. Locking bolt; 53. First driving component; 531. Rotating handle; 532. Gear; 6. Second sliding component; 7. Adjustment... Sectional assembly; 71, first slide rail; 711, first slide groove; 712, first guide rod; 72, first lead screw; 73, first slider; 74, second slide rail; 741, second slide groove; 742, connecting section; 743, second guide rod; 75, second lead screw; 76, second slider; 8, rotating assembly; 81, inner cylinder; 82, outer cylinder; 83, first fastener; 84, collar; 9, first hull section; 91, closing opening; 92, cutting line; 10, second hull section. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "bottom", "inner", "outer" and other terms used in this invention to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0021] It should be understood that the terms "first," "second," etc., are used in this invention to describe various types of information, but these terms are not limited to them; they are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] like Figures 1 to 6As shown, a preferred embodiment of the present invention provides a hull cutting device for cutting a first hull segment 9 and a second hull segment 10 located on the left and right sides of a closure opening 91, respectively. Both the first hull segment 9 and the second hull segment 10 are provided with cutting lines 92. The hull cutting device includes a guide rail 1, a moving structure 2, a first cutting element 3, and a second cutting element 4. The guide rail 1 is installed on the first hull segment 9 or the second hull segment 10 and extends along the length of the cutting line 92. The moving structure 2 is movably installed on the guide rail 1, and a support base 21 is fixed on the moving structure 2. At least a portion of the support base 21 is located on both sides of the closure opening 91. The first cutting element 3 is installed on the support base 21, located on the left side of the closure opening 91, and is used to cut the first hull segment 9. The second cutting element 4 is installed on the support base 21, located on the right side of the closure opening 91, and is used to cut the second hull segment 10. In this embodiment of the invention, both the first cutting element 3 and the second cutting element 4 are plasma cutting guns, the moving structure 2 is a self-propelled trolley, such as an electric track trolley, and the guide rail 1 is a matching track. The guide rail 1 is fixed on the first hull segment 9 or the second hull segment 10, and its extension direction is parallel to the length direction of the cutting line 92. Multiple magnetic seats are fixed on the guide rail 1, and the multiple magnetic seats are arranged at intervals along the length direction of the guide rail 1. Each magnetic seat is magnetically connected to the first hull segment 9 or the second hull segment 10 to realize the fixation of the guide rail 1 on the hull segment. The combination of the moving structure 2 and the guide rail 1 is the prior art, and its specific structure, driving method and installation method will not be described in detail here.

[0024] This invention discloses a hull cutting device and method. A guide rail 1 is installed on a single-sided hull section. The support base 21 of the moving structure 2 extends horizontally to the other side of the closure opening 91. A first cutting element 3 is located on the left side of the closure opening 91, and a second cutting element 4 is located on the right side. Both the first cutting element 3 and the second cutting element 4 are integrated on the same support base 21 and move synchronously along the guide rail 1 with the moving structure 2. While the moving structure 2 moves, the first cutting element 3 and the second cutting element 4 cut the outer plates on both sides of the closure opening 91. In this embodiment, the first cutting element 3 and the second cutting element 4 use the same guide rail 1 as their motion reference, eliminating the accumulation of installation errors caused by two independently laid guide rails, ensuring the accuracy of the cutting trajectory of the outer plates on both sides of the closure opening. Simultaneously, the distance between the first cutting element 3 and the second cutting element 4 in the left-right direction remains constant, ensuring a constant spacing between the outer plates at the closure opening 91 after cutting, avoiding problems such as excessively large or small spacing between outer plates in certain areas of the closure opening 91. In the subsequent welding process, the weld section filled in the closure opening 91 is evenly distributed, and there will be no area with abnormal weld thickness due to abrupt changes in the spacing of the outer plate. This can effectively avoid local stress concentration in the weld and improve the overall strength of the closure weld.

[0025] Meanwhile, in this embodiment of the invention, the cutting of the segmented outer plates on both sides of the closure can be completed by only one guide rail installation and alignment, which reduces the steps of guide rail disassembly and positioning adjustment and improves construction efficiency.

[0026] Specifically, such as Figure 2 As shown, the support base 21 includes a first connecting rod 211 and a second connecting rod 212 fixed to the movable structure 2. The first connecting rod 211 and the second connecting rod 212 are arranged at intervals along the length direction of the guide rail 1, and both the first connecting rod 211 and the second connecting rod 212 extend in the left-right direction. In this embodiment of the invention, the guide rail 1 and the movable structure 2 are both installed on the first hull section 9 on the left side of the closing opening 91. The first connecting rod 211 and the second connecting rod 212 extend horizontally to the right side of the closing opening 91. A first sliding member 5 is slidably installed on the first connecting rod 211. The first sliding member 5 can reciprocate along the length direction of the first connecting rod 211. A first cutting member 3 is installed on the first sliding member 5. A second sliding member 6 is slidably installed on the second connecting rod 212. The second sliding member 6 can reciprocate along the length direction of the second connecting rod 212. A second cutting member 4 is installed on the second sliding member 6. By adjusting the positions of the first sliding member 5 and the second sliding member 6 on the first connecting rod 211 and the second connecting rod 212, the left and right positions of the first cutting member 3 and the second cutting member 4 relative to the closing opening 91 can be adjusted respectively, thereby adapting to the requirements of different widths or different cutting paths.

[0027] Specifically, such as Figures 3 to 5 As shown, the first sliding member 5 includes a first sliding sleeve 51, a locking bolt 52, and a first driving member 53. The first sliding sleeve 51 is slidably fitted onto the first connecting rod 211, and the first cutting member 3 is mounted on the first sliding sleeve 51. One side of the first sliding sleeve 51 has an opening extending axially along the first connecting rod 211. A connecting plate 511 is fixed to each side of the first sliding sleeve 51 on both sides of the opening. Both connecting plates 511 are located on the outer side of the first sliding sleeve 51 and are arranged relatively spaced apart. The locking bolt 52 passes through both connecting plates 511. Specifically, the screw of the locking bolt 52 passes through both connecting plates 511, and the nut of the locking bolt 52 is installed on the outer side of one of the connecting plates 511. When the locking bolt 52 is tightened, the two connecting plates 511 move closer to each other, narrowing the opening and thus securing the first sliding sleeve 51 to the first connecting rod 211. When the locking bolt 52 is loosened, the opening returns to its original state, and the first sliding sleeve 51 can slide freely along the first connecting rod 211. The first driving member 53 is used to drive the first sliding sleeve 51 to slide along the axial direction of the first connecting rod 211. In use, the locking bolt 52 is loosened first, and the first sliding sleeve 51 is driven to slide along the first connecting rod 211 to the desired position by the first driving member 53. Then the locking bolt 52 is tightened to lock the first sliding sleeve 51 onto the first connecting rod 211, thereby realizing the adjustment of the position of the first cutting piece 3 in the left and right directions.

[0028] The structure of the second sliding member 6 is the same as that of the first sliding member 5. In the second sliding member 6, the first sliding sleeve 51 is slidably sleeved on the second connecting rod 212, the second cutting member 4 is installed on the first sliding sleeve 51, the opening extends along the axial direction of the second connecting rod 212, and the first driving member 53 is used to drive the first sliding sleeve 51 to slide along the axial direction of the second connecting rod 212.

[0029] Furthermore, such as Figures 3 to 5 As shown, to prevent the first sliding sleeve 51 from rotating relative to the first connecting rod 211 or the second connecting rod 212, causing the cutting trajectory to deviate from the cutting line 92, a groove is provided on the side of the first connecting rod 211 / second connecting rod 212 near the opening. The groove extends along the axial direction of the first connecting rod 211 / second connecting rod 212. An insert plate 513 is provided between the two connecting plates 511. One side of the insert plate 513 passes through the opening and is inserted into the groove, and the insert plate 513 can slide along the groove. The locking bolt 52 passes through the two connecting plates 511 and the insert plate 513. In this embodiment of the invention, the screw of the locking bolt 52 passes through one of the connecting plates 511, the insert plate 513 and the other connecting plate 511 in sequence, and the nut of the locking bolt 52 is installed on the outside of one of the connecting plates 511.

[0030] When the locking bolt 52 is tightened, the two connecting plates 511 move closer together and clamp the insert plate 513, narrowing the opening so that the first sliding sleeve 51 hugs the first connecting rod 211 / second connecting rod 212. Simultaneously, the insert plate 513, inserted into the groove, achieves axial locking and circumferential anti-rotation of the first sliding sleeve 51. When the locking bolt 52 is loosened, the insert plate 513 remains in the groove, serving only a guiding function, allowing the first sliding sleeve 51 to slide freely along the first connecting rod 211 / second connecting rod 212, while restricting the rotational freedom of the first sliding sleeve 51 around the first connecting rod 211 / second connecting rod 212. This embodiment of the invention, through the cooperation of the groove and the insert plate 513, prevents the first sliding sleeve 51 from circumferentially deflecting due to vibration or external force during use, ensuring that the first cutting element 3 and the second cutting element 4 are always aligned with the preset cutting line, thus improving the cutting accuracy of the cutting device.

[0031] Specifically, such as Figures 2 to 5As shown, both the first link 211 and the second link 212 are provided with racks 2111 extending along their length direction. Each first sliding sleeve 51 is provided with a window 514 on its side wall for exposing the rack 2111. Each first driving member 53 includes a rotating handle 531 and a gear 532 fixed to the end of the rotating handle 531. The rotating handle 531 is rotatably mounted on the outside of the first sliding sleeve 51. The rotating handle 531 extends tangentially along the first link 211 / second link 212. The end of the rotating handle 531 with the gear 532 extends to the window 514, and the gear 532 meshes with the rack 2111. In this embodiment of the invention, a fixing sleeve 515 is fixed to the outside of the first sliding sleeve 51. The fixing sleeve 515 has an internal thread and extends tangentially along the first sliding sleeve 51. The window 514 connects the internal space of the fixing sleeve 515 and the first sliding sleeve 51. An installation sleeve 516 is fitted in the middle of the rotating handle 531. The rotating handle 531 can rotate relative to the installation sleeve 516. The handles and gears 532 at both ends of the rotating handle 531 form a stop for the installation sleeve 516. The installation sleeve 516 has an external thread on its outside.

[0032] During installation, one end of the rotating handle 531 with the gear 532 is inserted into the fixed sleeve 515. Simultaneously, the external thread of the mounting sleeve 516 is aligned with the internal thread of the fixed sleeve 515 and screwed in. As the mounting sleeve 516 is gradually screwed into the fixed sleeve 515, the gear 532 reaches the window 514 and engages with the rack 2111. After tightening, the mounting sleeve 516 and the fixed sleeve 515 are securely connected. The rotating handle 531 is rotatably mounted on the outside of the first sliding sleeve 51 via the mounting sleeve 516, and the rotating handle 531 extends tangentially along the first connecting rod 211. At this time, rotating the handle 531 causes the gear 532 to roll along the rack 2111, thereby driving the first sliding sleeve 51 to slide axially along the first connecting rod 211 / second connecting rod 212, thus moving the first cutting piece 3 or the second cutting piece 4. Through the meshing transmission of gear 532 and rack 2111, the position of the first sliding sleeve 51 can be finely adjusted. When the handle 531 is rotated by a certain angle, the first sliding sleeve 51 moves a corresponding distance along the first connecting rod 211. The adjustment accuracy is high and can meet the precise position requirements of the cutting workpiece aligned with the cutting line.

[0033] Furthermore, such as Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, each first sliding sleeve 51 is fixed with an adjustment component 7, which includes a first slide rail 71, a first lead screw 72, and a first slider 73. The first slide rail 71 is fixed to the first sliding sleeve 51 and has a first groove 711. The first lead screw 72 is rotatably mounted in the first groove 711, and the first slider 73 is threaded onto the first lead screw 72. The first cutting element 3 / second cutting element 4 is mounted on the first slider 73. In this embodiment, the first groove 711 and the first lead screw 72 both extend along a direction perpendicular to the surface of the hull section. A first guide rod 712 is provided on the side wall of the first groove 711, extending along the length of the first groove 711. The first slider 73 has a groove matching the first guide rod 712, which is slidably mounted in the groove, guiding the sliding of the first slider 73 and restricting its rotation. The first lead screw 72 is driven to rotate, causing the first slider 73 to move along the axial direction of the first lead screw 72, thereby causing the first cutting element 3 to abut / detach from the first hull section 9, or causing the second cutting element 4 to abut / detach from the second hull section 10. Through this structure, the position of the cutting element can be adjusted according to the thickness of the hull plate or the bevel angle, ensuring that the cutting nozzle maintains the optimal distance from the plate being cut.

[0034] Furthermore, such as Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the adjustment assembly 7 also includes a second slide rail 74, a second lead screw 75, and a second slider 76. The second slide rail 74 is located on one side of the first slide rail 71 along the extension direction of the guide rail 1. The side of the second slide rail 74 closest to the first slide rail 71 has a second groove 741 extending in the left-right direction. The second lead screw 75 extends in the left-right direction and is rotatably mounted within the second groove 741. The second slider 76 is threaded onto the second lead screw 75 and is fixedly connected to the first slider 73. The first cutting element 3 and the second cutting element 4 are mounted on the second slide rail 74, thereby achieving indirect mounting of the first cutting element 3 and the second cutting element 4 onto the first slider 73. In this embodiment of the invention, a second guide rod 743 is provided on the side wall of the second slide groove 741. The second guide rod 743 extends along the length direction of the second slide groove 741. The second slider 76 is provided with a slide groove that matches the second guide rod 743. The second guide rod 743 is slidably installed in the slide groove, which guides the sliding of the second slider 76 and restricts the rotation of the second slider 76.

[0035] The second lead screw 75 is driven to rotate, and the second lead screw 75 moves left and right relative to the second slider 76, thereby causing the second slide rail 74 and the first cutting part 3 or the second cutting part 4 on it to make fine adjustments in the left and right directions, so as to achieve fine adjustment of the position of the cutting part. In this embodiment of the invention, by adjusting the component 7, the cutting part can be precisely adjusted in the direction perpendicular to the hull section and in the left and right directions, further improving the flexibility and accuracy of aligning the cutting part with the cutting line.

[0036] Furthermore, such as Figure 2 and Figure 3 As shown, a rotating assembly 8 is installed on the second slide rail 74. The rotating assembly 8 includes an inner cylinder 81, an outer cylinder 82, and a first fastener 83. The inner cylinder 81 is fixed on the second slide rail 74 and extends along the length of the guide rail 1. The outer cylinder 82 is rotatably fitted onto the inner cylinder 81. The first cutting piece 3 or the second cutting piece 4 is fixedly installed on the outer cylinder 82. The first fastener 83 passes through the outer cylinder 82 and abuts against the inner cylinder 81. In this embodiment of the invention, the axis of the inner cylinder 81 is parallel to the length direction of the guide rail 1. A connecting section 742 is fixed to the right end of the second slide rail 74, and the inner cylinder 81 is fixed to the connecting section 742. The inner cylinder 81 is provided with a scale. The outer cylinder 82 is fitted onto the inner cylinder 81, and the outer cylinder 82 can rotate freely around the axis of the inner cylinder 81 within a certain angle range. A collar 84 is fixed to the end of the outer cylinder 82 away from the inner cylinder 81. Fasteners are provided on the side wall of the collar 84. The first cutting piece 3 / or the second cutting piece 4 is inserted into the collar 84, and the fastener passes through the collar 84 and abuts against the cutting piece, thereby fixing the cutting piece on the outer cylinder 82. When it is necessary to adjust the cutting angle of the first cutting piece 3 or the second cutting piece 4 (e.g., to adapt to different bevel angles), first loosen the first fastener 83, rotate the outer cylinder 82 to the required angle, and then tighten the first fastener 83 so that its end presses against the outer wall of the inner cylinder 81, thereby locking the outer cylinder 82 in the current position.

[0037] The embodiments of the present invention, through the aforementioned rotating component 8 and adjusting component 7, can achieve precise adjustment of the first cutting component 3 and the second cutting component 4 in three directions, and the cutting device can flexibly adapt to the cutting process requirements of various complex ship hull section joining joints.

[0038] Based on the above-mentioned hull cutting device, this embodiment of the invention proposes a cutting method for the hull cutting device, including the following steps: S1. Install guide rail 1 on the first hull section 9 or the second hull section 10 so that guide rail 1 extends along the length direction of cutting line 92. In step S1, based on the position of the closure opening 91 and the direction of the cutting line 92, the guide rail 1 is placed on the surface of the first hull segment 9 (or the second hull segment 10), and the direction of the guide rail 1 is adjusted to be parallel to the length direction of the cutting line 92. The guide rail 1 is firmly attached to the hull segment by the magnetic base at the bottom of the guide rail 1 to ensure that it does not shift during subsequent cutting.

[0039] S2. Adjust the left and right positions of the first cutting element 3 and the second cutting element 4 by the first driving element 53 so that the first cutting element 3 and the second cutting element 4 are close to the cutting line 92; In step S2, rotating the handle 531 drives the gear 532 to roll along the rack 2111, causing the first sliding sleeve 51 to slide along the first connecting rod 211. This initially adjusts the left and right position of the first cutting piece 3, bringing it approximately close to the cutting line 92 on the first hull section 9. Then, the locking bolt 52 is screwed in to fix the first sliding sleeve 51. Similarly, the second sliding piece 6 adjusts the position of the second cutting piece 4 using the same drive structure, bringing it approximately close to the cutting line 92 on the second hull section 10.

[0040] S3. Rotate the outer cylinder 82 to adjust the cutting angle of the first cutting piece 3 and the second cutting piece 4; In step S3, according to the bevel angle requirements of the hull plate, the first fastener 83 is loosened, the outer cylinder 82 is rotated, and the first cutting piece 3 or the second cutting piece 4 fixed on the outer cylinder 82 is rotated to the required angle. Then the first fastener 83 is tightened to lock the outer cylinder 82 onto the inner cylinder 81, thus completing the setting of the cutting angle.

[0041] S4. Rotate the second lead screw 75 to adjust the left and right positions of the first cutting piece 3 and the second cutting piece 4 so that the first cutting piece 3 and the second cutting piece 4 are aligned with the cutting lines 92 on the corresponding sides. In step S4, the second lead screw 75 is rotated to drive the second slide rail 74 to move left and right, thereby causing the first cutting piece 3 or the second cutting piece 4 on the second slide rail 74 to be finely adjusted so that the cutting nozzle of the cutting piece is precisely aligned with the cutting line 92 of the corresponding side hull segment. This step can achieve more precise position calibration.

[0042] S5. Rotate the first lead screw 72 so that the first cutting piece 3 abuts against the first hull section 9 and the second cutting piece 4 abuts against the second hull section 10. In step S5, the first lead screw 72 is rotated to drive the first slider 73 to move along the first slide groove 711, thereby driving the cutting part on the adjusting assembly 7 to move until the first cutting part 3 abuts the surface of the first hull section 9 and the second cutting part 4 abuts the surface of the second hull section 10.

[0043] S6. Drive the moving structure 2 to move along the guide rail 1 to drive the first cutting piece 3 and the second cutting piece 4 to move and cut along the cutting line 92.

[0044] In step S6, the moving structure 2 is activated, causing it to move at a constant speed along the guide rail 1. The moving structure 2 drives the first connecting rod 211 and the second connecting rod 212 to move forward together, thereby driving the first cutting piece 3 and the second cutting piece 4 to move synchronously along the cutting line 92, completing the cutting operation of the hull sections on both sides of the closing opening 91.

[0045] Through the above steps, operators can quickly complete the multi-dimensional precise alignment of the cut parts and achieve simultaneous cutting of hull sections on both sides of the closure opening, greatly improving cutting efficiency and accuracy.

[0046] In summary, this invention provides a hull cutting device and method. A guide rail 1 is installed on a single-sided hull section. The support base 21 of the moving structure 2 extends horizontally to the other side of the closure opening. A first cutting element 3 is located on the left side of the closure opening, and a second cutting element 4 is located on the right side. Both the first cutting element 3 and the second cutting element 4 are integrated on the same support base 21 and move synchronously along the guide rail 1 with the moving structure 2. While the moving structure 2 moves, the first cutting element 3 and the second cutting element 4 cut the outer plates on both sides of the closure opening. In this invention, the first cutting element 3 and the second cutting element 4 use the same guide rail 1 as their motion reference, eliminating the accumulation of installation errors caused by two independently laid guide rails, ensuring the accuracy of the cutting trajectory of the outer plates on both sides of the closure opening. Simultaneously, the distance between the first cutting element 3 and the second cutting element 4 in the left-right direction remains constant, ensuring a constant spacing between the outer plates at the closure opening after cutting, avoiding problems such as excessively large or small spacing between outer plates in the closure opening. In the subsequent welding process, the weld section filled in the closure joint is evenly distributed, and there will be no areas of abnormal weld thickness due to abrupt changes in the spacing of the outer plates. This can effectively avoid local stress concentration in the weld and improve the overall strength of the closure weld.

[0047] Meanwhile, in this embodiment of the invention, the cutting of the segmented outer plates on both sides of the closure can be completed by only one guide rail installation and alignment, which reduces the steps of guide rail disassembly and positioning adjustment and improves construction efficiency.

[0048] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A hull cutting device for cutting a first hull section (9) and a second hull section (10) located on the left and right sides of the closure opening (91), characterized in that, include: A guide rail (1) is installed on the first hull section (9) or the second hull section (10), and the guide rail (1) extends along the length direction of the cutting line (92); The movable structure (2) is movably mounted on the guide rail (1), and a support base (21) is fixed on the movable structure (2). At least a portion of the support base (21) is disposed on both sides of the closing opening (91). The first cutting piece (3) is installed on the support base (21). The first cutting piece (3) is located on the left side of the closing opening (91) and is used to cut the first hull section (9). The second cutting component (4) is installed on the support base (21). The second cutting component (4) is located on the right side of the closure opening (91) and is used to cut the second hull section (10).

2. The hull cutting device according to claim 1, characterized in that, The support base (21) includes a first link (211) and a second link (212) fixed to the movable structure (2). The first link (211) and the second link (212) are arranged at intervals along the length direction of the guide rail (1). Both the first link (211) and the second link (212) extend in the left-right direction. A first sliding member (5) is slidably mounted on the first connecting rod (211), and the first cutting member (3) is mounted on the first sliding member (5); a second sliding member (6) is slidably mounted on the second connecting rod (212), and the second cutting member (4) is mounted on the second sliding member (6).

3. The hull cutting device according to claim 2, characterized in that, The first slider (5) includes: The first sliding sleeve (51) is slidably fitted onto the first connecting rod (211), and the first cutting piece (3) is installed on the first sliding sleeve (51); The first sliding sleeve (51) has an opening on one side that extends axially along the first connecting rod (211). A connecting plate (511) is fixed on each side of the first sliding sleeve (51) on both sides of the opening. The two connecting plates (511) are arranged at intervals relative to each other. Locking bolts (52) pass through the two connecting plates (511); The first driving member (53) is used to drive the first sliding sleeve (51) to slide along the axial direction of the first connecting rod (211); The structure of the second slider (6) is the same as that of the first slider (5). In the second slider (6): The first sliding sleeve (51) is slidably sleeved on the second connecting rod (212), the second cutting member (4) is installed on the first sliding sleeve (51), and the opening extends along the axial direction of the second connecting rod (212); the first driving member (53) is used to drive the first sliding sleeve (51) to slide along the axial direction of the second connecting rod (212).

4. The hull cutting device according to claim 3, characterized in that, The first link (211) and the second link (212) are provided with a groove on the side near the opening, and the groove extends along the axial direction of the first link (211) and the second link (212); An insert plate (513) is provided between the two connecting plates (511). One side of the insert plate (513) passes through the opening and is inserted into the groove. The locking bolt (52) passes through the two connecting plates (511) and the insert plate (513).

5. The hull cutting device according to claim 3, characterized in that, Both the first link (211) and the second link (212) are provided with racks (2111) extending along their length direction. Each of the first sliding sleeves (51) has a window (514) on its side wall for exposing the rack (2111). Each of the first driving components (53) includes a rotating handle (531) and a gear (532) fixed to the end of the rotating handle (531). The rotating handle (531) is rotatably mounted on the outside of the first sliding sleeve (51). The rotating handle (531) extends tangentially along the first connecting rod (211) / second connecting rod (212). One end of the rotating handle (531) with the gear (532) extends to the window (514). The gear (532) meshes with the rack (2111).

6. The hull cutting device according to claim 3, characterized in that, Each of the first sliding sleeves (51) is fixed with an adjustment component (7), the adjustment component (7) comprising: The first slide rail (71) is fixed on the first slide sleeve (51), and the first slide rail (71) is provided with a first slide groove (711). The first lead screw (72) is rotatably installed in the first slide groove (711); The first slider (73) is threaded onto the first lead screw (72), and the first cutting part (3) / the second cutting part (4) is installed on the first slider (73); Drive the first lead screw (72) to rotate so as to drive the first cutting piece (3) to abut / dismount from the first hull section (9), or drive the second cutting piece (4) to abut / dismount from the second hull section (10).

7. The hull cutting device according to claim 6, characterized in that, The adjustment component (7) further includes: The second slide rail (74) has a second slide groove (741) extending in the left and right direction, and the first cutting element (3) / the second cutting element (4) is installed on the second slide rail (74); The second lead screw (75) extends in the left and right direction and is rotatably installed in the second slide groove (741); The second slider (76) is threaded onto the second lead screw (75), and the second slider (76) is fixedly connected to the first slider (73).

8. The hull cutting device according to claim 7, characterized in that, A rotating assembly (8) is mounted on the second slide rail (74), the rotating assembly (8) including an inner cylinder (81), an outer cylinder (82) and a first fastener (83); The inner cylinder (81) is fixed on the second slide rail (74). The inner cylinder (81) extends along the length direction of the guide rail (1). The outer cylinder (82) is rotatably fitted onto the inner cylinder (81). The first cutting piece (3) or the second cutting piece (4) is fixedly installed on the outer cylinder (82). The first fastener (83) passes through the outer cylinder (82) and abuts against the inner cylinder (81).

9. The hull cutting device according to claim 1, characterized in that, Multiple magnetic seats are fixed on the guide rail (1). The multiple magnetic seats are arranged at intervals along the length direction of the guide rail (1). Each magnetic seat is magnetically connected to the first hull section (9) or the second hull section (10).

10. A cutting method of the hull cutting device according to claim 8, characterized in that, Includes the following steps: S1. Install a guide rail (1) on the first hull section (9) or the second hull section (10) so that the guide rail (1) extends along the length direction of the cutting line (92); S2. Adjust the left and right positions of the first cutting element (3) and the second cutting element (4) by the first driving element (53) so that the first cutting element (3) and the second cutting element (4) are close to the cutting line (92). S3. Rotate the outer cylinder (82) to adjust the cutting angle of the first cutting element (3) and the second cutting element (4); S4. Rotate the second lead screw (75) to adjust the left and right positions of the first cutting piece (3) and the second cutting piece (4) so ​​that the first cutting piece (3) and the second cutting piece (4) are aligned with the cutting line (92) on the corresponding side. S5. Rotate the first lead screw (72) so that the first cutting piece (3) abuts against the first hull section (9) and the second cutting piece (4) abuts against the second hull section (10). S6. Drive the moving structure (2) to move along the guide rail (1) so as to drive the first cutting piece (3) and the second cutting piece (4) to move and cut along the cutting line (92).

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