Box body connection transition section, transition joint, box body structure and quay crane

Abstract

The embodiment of the invention provides a box body connection transition section, a transition joint, a box body structure and a quay crane, and relates to the field of quayside container crane stand columns. The problems that when a hexagonal box body and a quadrilateral box body are transited in a traditional connection mode, load transmission is discontinuous, stress concentration is large, and reliability is low are solved. The box body connection transition section comprises a quadrilateral base body frame and at least two transition plates, and the base body frame forms a quadrilateral connection end; the transition plates are connected to the side edges of the base body frame, and the base body frame and the at least two transition plates jointly define a hexagonal connecting end. The transition joint, the box body structure and the quay crane comprise the box body connection transition section. Force is smoothly redistributed and transmitted along the continuous transition plate and the base body frame panel, sudden steering and concentration at the connecting interface are avoided, the stress peak value is reduced, and the durability of the structure under alternating loads is greatly enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shore-based container crane columns, and in particular to a box body connecting transition section, a transition joint, a box body structure, and a shore-based container crane. BACKGROUND

[0002] A shore-based container crane (hereinafter referred to as "shore crane") is a key equipment for loading and unloading container ships in a port, and is usually arranged in a coastal or river area, which is easily affected by extreme weather such as gales and typhoons. Wind load is an important consideration in the structural design of a shore crane, and its calculation formula is F = A x q x Cf, where A is the effective windward area, q is the wind pressure, and Cf is the wind force coefficient. In the above formula, the wind pressure q is determined by the wind speed and is difficult to adjust; the effective windward area A is usually based on the structural stress requirements and economic considerations, and is also difficult to change significantly. Therefore, reducing the wind force coefficient Cf is an effective way to reduce wind load.

[0003] To reduce the wind force coefficient, the existing technology has changed the cross section of the shore crane column from the traditional quadrilateral box body to the hexagonal box body to improve the aerodynamic performance and reduce the wind load. However, due to functional or manufacturing constraints, some parts of the shore crane structure (such as the connection or transition section) cannot completely adopt the hexagonal box body and still need to retain the quadrilateral box body. This leads to the difficulty of connecting the hexagonal box body and the quadrilateral box body, and the flange connection method has the problems of discontinuous load transmission, significant stress concentration, and the like, which reduces the reliability and fatigue life of the structure, and especially easily causes safety hazards under gale conditions. In addition, the traditional connection method lacks tolerance capacity, increasing the manufacturing and installation difficulty.

[0004] Therefore, there is an urgent need in the art for a connecting joint that can smoothly and smoothly transition the hexagonal box body and the quadrilateral box body to improve the load transmission path, reduce stress concentration, and improve the structural reliability and tolerance capacity. SUMMARY

[0005] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

[0006] The purposes of the present application include, for example, providing a box body connecting transition section, a transition joint, a box body structure, and a shore crane, which can improve the problems of discontinuous load transmission, large stress concentration, and low reliability when the hexagonal box body and the quadrilateral box body are transitioned using a traditional connection method.

[0007] Embodiments of the present application can be implemented as follows:

[0008] Embodiments of the present application provide a box connecting transition section for shape connection transition between a quadrilateral box and a hexagonal box, comprising a quadrilateral base frame and at least two transition plates, the base frame comprising at least four panels connected in sequence and forming a quadrilateral connecting end; the transition plates being connected to the side edges of the base frame, and the base frame and the at least two transition plates together forming a hexagonal connecting end.

[0009] In addition, the box connecting transition section provided by embodiments of the present application can also have the following additional technical features:

[0010] Optionally, the transition plates are triangular plates.

[0011] Optionally, the number of the transition plates is four, and the four transition plates are symmetrically connected to the four edges of the base frame, and the cross section of the hexagonal connecting end forms an axisymmetric hexagon.

[0012] Optionally, the side edges of at least one panel of the base frame are configured as bevels, and the two side edges of the transition plate are connected to the side edges of the adjacent two panels.

[0013] Optionally, the box connecting transition section further comprises a reinforcing structure, and the reinforcing structure is arranged on the inner side of the transition plate.

[0014] Optionally, the reinforcing structure comprises vertical ribs, the vertical ribs are vertically fixed on the inner side of the transition plate, and one end of the vertical rib extends to the end of the hexagonal connecting end.

[0015] Optionally, the reinforcing structure further comprises a T-shaped steel or an angle steel arranged along the connecting line of the transition plate and the base frame.

[0016] Optionally, the box connecting transition section further comprises a first partition plate, the first partition plate is fixed on the inner side of the adjacent two transition plates and fixed with the transition plates, and the end of the vertical rib is fixed with the first partition plate.

[0017] Optionally, the box connecting transition section further comprises a second partition plate, the first partition plate and the second partition plate are fixed in the space enclosed by the base frame and the transition plates in the direction from the hexagonal connecting end to the quadrilateral connecting end, and the outer edges of the first partition plate and the second partition plate are in contact with the inner sides of the base frame and the transition plates; one end of the T-shaped steel or the angle steel is fixed with the first partition plate.

[0018] The embodiment of the present application also provides a box connecting transition joint, which comprises a flange ring and a box connecting transition section, and the flange ring is fixed to the hexagonal connecting end.

[0019] The embodiment of the present application also provides a box structure, which comprises a quadrilateral box section, a hexagonal box section and a box connecting transition section or a box connecting transition joint; in the case of using the box connecting transition section, the quadrilateral connecting end of the box connecting transition section is connected with the quadrilateral box section, and the hexagonal connecting end of the box connecting transition section is connected with the hexagonal box section; in the case of using the box connecting transition joint, the quadrilateral connecting end of the box connecting transition joint is connected with the quadrilateral box section, and the flange ring is connected with the hexagonal box section.

[0020] The embodiment of the present application also provides a shore crane, and the stand column of the shore crane adopts the box structure.

[0021] The box connecting transition section, the transition joint, the box structure and the shore crane provided by the embodiment of the present application have the following beneficial effects, for example:

[0022] The box connecting transition section is composed of at least four panels connected end to end, and forms a quadrilateral connecting end; the transition plate is connected at the side edge of the base frame, and the base frame and the transition plate together enclose a hexagonal connecting end. The transition section realizes smooth and gradual transition from quadrilateral to hexagonal by increasing the number of panels, and force can be smoothly redistributed and transmitted along the continuous transition plate and the base frame panel, avoiding sudden turning and concentration at the connecting interface. The stress peak is reduced, and the durability of the structure under alternating load is greatly enhanced.

[0023] The transition joint, the box structure and the shore crane comprise the box connecting transition section described above, and can improve the problems of discontinuous load transmission, large stress concentration and low reliability when the hexagonal box and the quadrilateral box are connected in the traditional way. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above features and advantages of the present application can be better understood by reading the detailed description of embodiments of the present application in conjunction with the following drawings, in which components are not necessarily drawn to scale and components of similar or identical function or structure can have the same or similar reference numbers.

[0025] Figure 1 A structural schematic diagram of a shore crane provided by the embodiment of the present application is shown in FIG. 1.

[0026] Figure 2 A structural schematic diagram of a shore crane provided by the embodiment of the present application is shown in FIG. 1. Figure 1 A sectional view of the stand column A-A is shown in FIG. 2.

[0027] Figure 3 The box connecting transition section provided by the embodiment of the present application Figure 1 The cross-sectional view of the neutral column E-E;

[0028] Figure 4 The structure schematic diagram of the flange ring and the hexagonal box connection of the box connecting transition section provided by the embodiment of the present application;

[0029] Figure 5 The box connecting transition section provided by the embodiment of the present application Figure 4 The front view of the structure shown;

[0030] Figure 6 The box connecting transition section provided by the embodiment of the present application Figure 4 The side view of the structure shown;

[0031] Figure 7 The box connecting transition section provided by the embodiment of the present application Figure 6 The cross-sectional view of the neutral column B-B;

[0032] Figure 8 The box connecting transition section provided by the embodiment of the present application Figure 4 The top view of the structure shown;

[0033] Figure 9 The partial structure schematic diagram of the faceplate and the transition plate in the box connecting transition section provided by the embodiment of the present application;

[0034] Figure 10 The partial structure schematic diagram of the faceplate and the transition plate in the box connecting transition section provided by the embodiment of the present application;

[0035] Figure 11 The structure schematic diagram of one of the faceplates in the box connecting transition section provided by the embodiment of the present application;

[0036] Figure 12 The structure schematic diagram of the flange ring top view angle in the box connecting transition section provided by the embodiment of the present application;

[0037] Figure 13 The structure schematic diagram of the second partition plate top view angle in the box connecting transition section provided by the embodiment of the present application;

[0038] Figure 14 The main view and the side view of the T-shaped steel in the box connecting transition section provided by the embodiment of the present application.

[0039] Icon: shore crane-10; column-20; box connecting transition section-100; quadrilateral box-200; hexagonal box-300; base frame-110; panel-111; quadrilateral connecting end-120; transition plate-130; hexagonal connecting end-140; vertical rib-400; T-shaped steel-500; first partition-600; second partition-610; flange ring-700; first panel-112; second panel-113; third panel-114; fourth panel-115; first transition plate-131; second transition plate-132; fourth transition plate-134. DETAILED DESCRIPTION

[0040] The present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Note that the aspects described below in conjunction with the accompanying drawings and specific embodiments are merely exemplary and should not be understood as limiting the scope of protection of the present application in any way.

[0041] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer", "vertical", etc. indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and do not indicate or imply that the device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it should not be understood as limiting the present application.

[0042] At the same time, it should be noted that the terms "first", "second", etc. are used only for differentiation and should not be understood as indicating or implying relative importance.

[0043] In the description of the present application, it should also be noted that unless otherwise explicitly specified or limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, integrally connected, or detachably connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or communication between two elements, etc. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] The following will be described in conjunction with Figures 1 to 14 The box connecting transition section 100 provided by the present embodiment will be described in detail.

[0045] Please refer to Figure 4 , Figure 5 and Figure 6The embodiment of the present application provides a box connecting transition section 100 for shape connecting transition of a quadrilateral box 200 and a hexagonal box 300, comprising a quadrilateral base frame 110 and at least two transition plates 130, the base frame 110 comprises at least four panels 111 connected in sequence and forms a quadrilateral connecting end 120; the transition plate 130 is connected to the side edge of the base frame 110, and the base frame 110 and the at least two transition plates 130 jointly form a hexagonal connecting end 140.

[0046] The transition section is jointly formed by the quadrilateral base frame 110 and the transition plate 130 connected to the edge thereof, and forms a variable cross-section box with a quadrilateral connecting end 120 at one end and a hexagonal connecting end 140 at the other end. By adding the transition plate 130 at the corner of the quadrilateral frame, the geometry of the end section is physically changed, and the structural transition from the quadrilateral to the hexagon is realized. At the same time, the continuous change of the geometry from the quadrilateral cross-section to the hexagonal cross-section is realized, instead of the cross-section mutation of the traditional flange connection. According to the principle of mechanics, the load tends to be transmitted along the path with the maximum structural stiffness. Cross-section mutation will cause sharp turning of the load and stress concentration. The smooth transition of the structure enables the load to be redistributed gently, from the four corner areas of the quadrilateral to the six corner areas of the hexagon.

[0047] The load from the quadrilateral box 200 is more smoothly transmitted to the hexagonal box 300 through the continuously changing geometry, avoiding cross-section mutation and significantly reducing the stress concentration coefficient at the connection. The gentle redistribution of the load makes the load transmission more uniform, improves the fatigue life and static strength reliability of the structure. The aerodynamic advantage of the hexagonal cross-section is inherited, that is, the wind force coefficient is lower than that of the quadrilateral.

[0048] With reference to Figure 4 , Figure 5 and Figure 6 In the embodiment, the transition plate 130 is a triangular plate. In the space extending from one corner of the quadrilateral, the triangle is a simple planar geometric shape that fills the space to form the adjacent side of the hexagon. The triangle is a stable structure form, which can realize efficient transmission of in-plane load with less material, mainly bears tensile and compressive stress, and not bending stress.

[0049] The triangular plate is a simple shape, which is convenient for cutting and has good manufacturing process and low cost. The triangular plate is mainly subjected to in-plane tension and compression, has good stress state and high force transmission efficiency.

[0050] With reference to Figure 4 , Figure 5 and Figure 6In this embodiment, there are four transition plates 130. The four transition plates 130 are symmetrically connected to the four edges of the base frame 110, and the cross-section of the hexagonal connection end 140 forms an axisymmetric hexagon.

[0051] In structural mechanics, a symmetrical layout implies a uniform distribution of stiffness and mass. Symmetry ensures that loads originating from the center of a quadrilateral can be transmitted to the corners of the hexagon through multiple identical paths, with no weak points.

[0052] It eliminates the additional bending or torsion that may be caused by asymmetric stiffness. This results in consistent and predictable mechanical properties in all directions, with optimal load-bearing capacity.

[0053] Reference Figure 4 , Figure 5 and Figure 6 In this embodiment, at least one panel 111 of the base frame 110 has its side edge constructed as a bevel, and the two sides of the transition plate 130 are respectively connected to the side edges of two adjacent panels 111.

[0054] Sharp concave corners are a source of stress concentration; the beveled design eliminates potential concave corners, resulting in a more continuous geometric change at the joint. This improves weld accessibility and weld quality, and increases joint strength. It further smooths the load line, eliminates stress concentration points at sharp corners, and enhances fatigue performance.

[0055] Reference Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 In this embodiment, the base frame 110 includes a first panel 112, a second panel 113, a third panel 114, and a fourth panel 115. At least four transition plates 130 include a first transition plate 131, a second transition plate 132, a third transition plate 130, and a fourth transition plate 134. The first panel 112, the second panel 113, the third panel 114, and the fourth panel 115 are connected end to end in sequence. One end of the first panel 112 and the third panel 114 is triangular, and one end of the second panel 113 and the fourth panel 115 is trapezoidal. Each pair of adjacent panels 111 has a hypotenuse. The first transition plate 131 is fixed between the first panel 112 and the second panel 113. Similarly, the other transition plates 130 are arranged between adjacent pairs of panels 111 in sequence. The first transition plate 131, the second transition plate 132, the second panel 113, the third transition plate 130, the fourth transition plate 134, and the fourth panel 115 are connected end to end in sequence to form a hexagonal connecting end 140.

[0056] Reference Figure 5 , Figure 6 and Figure 8In this embodiment, the box-connecting transition section 100 also includes a reinforcing structure, which is disposed on the inner side of the transition plate 130. Thin plate structures are prone to buckling under pressure. The reinforcing structure provides lateral support, shortens the free span of the plate, and significantly increases the critical buckling stress of the plate.

[0057] Reference Figure 5 , Figure 6 and Figure 8 In this embodiment, the reinforcing structure includes vertical ribs 400, which are vertically fixed to the inner side of the transition plate 130, with one end of the vertical ribs 400 extending to the end of the hexagonal connecting end 140. The vertical ribs 400 are arranged along the central axis of the quadrilateral box 200 and the hexagonal box 300, and a vertical rib 400 is correspondingly fixed to the inner side of each transition plate 130. Specifically, one end of the vertical rib 400 is fixed to the flange ring 700 mentioned below, and the other end of the vertical rib 400 is fixed to the first partition plate 600 mentioned below.

[0058] Reference Figure 6 and Figure 14 In this embodiment, the reinforcing structure also includes T-shaped steel 500 or angle steel arranged along the connection line between the transition plate 130 and the base frame 110. The T-shaped steel 500 / angle steel is arranged in the high-stress area of ​​the connection line to resist bending stress and shear stress by increasing the structure. One end of the T-shaped steel 500 is fixed to the first partition plate 600 mentioned below. The T-shaped steel 500 includes a first stiffener and a second stiffener. The first stiffener is vertically fixed to the second stiffener. The first stiffener is fixed along the connection line between the transition plate 130 and the base frame 110, and the upper end of the first stiffener is fixed to the first partition plate 600 mentioned below.

[0059] The reinforced structure effectively suppressed local buckling and deformation of the transition plate 130 under complex loads. By diverting the load in the high-stress area and transferring it to the stiffeners, stress redistribution and reduction were achieved.

[0060] Reference Figure 6 In this embodiment, the box body connecting transition section 100 also includes a first partition 600; the first partition 600 is fixed to the inner side of two adjacent transition plates 130 and fixed to the transition plates 130, and the end of the vertical rib 400 is fixed to the first partition 600.

[0061] Box-shaped structures undergo cross-sectional distortion under torque or unbalanced loads. The internal first partition 600 acts as a lateral support frame, constraining the relative displacement of the outer wall panels and maintaining the designed cross-sectional shape. It provides reliable end fixing points for the internal vertical ribs 400 and other reinforcing structures, allowing them to fully exert their stiffening effect and forming a collaborative internal support system. This ensures the geometric integrity of the transition section under load, thereby ensuring the stability of its mechanical properties and improving overall stiffness and stability.

[0062] Reference Figure 6 and Figure 13 In this embodiment, the box-connecting transition section 100 further includes a second partition 610; the first partition 600 and the second partition 610 are fixed at intervals along the direction from the hexagonal connecting end 140 to the quadrilateral connecting end 120 within the space enclosed by the base frame 110 and the transition plate 130, and the outer edges of the first partition 600 and the second partition 610 are in contact with the inner side of the base frame 110 and the transition plate 130; one end of the T-shaped steel 500 or the angle steel is fixed to the first partition 600.

[0063] Two spaced-apart first partitions 600 and second partitions 610 form multiple transverse support frames within the transition section. Through their contact with the inner and outer walls, the panels 111 and transition plate 130, which might otherwise deform independently, are connected as a whole across multiple cross-sections, working together. When the transition section is subjected to torque, the cross-section warps; these two partitions, acting as anti-distortion rigid partitions, greatly constrain this deformation, maintaining the required geometry and ensuring structural stability. The spaced-apart partitions have multiple load distribution nodes in the axial direction. Loads from the hexagonal or quadrilateral ends are first captured and redistributed by the partitions during transmission before being transferred downwards. This avoids localized high-stress areas that might result from loads being transmitted solely through the outer wall panels.

[0064] The T-shaped steel 500 / angle steel is arranged along the high-stress connection line, but if one end is suspended, its bending efficiency will be greatly reduced. Fixing one end to the solid first partition 600 is equivalent to providing a fixed support for the T-shaped steel 500. This efficiently transfers and distributes the force on the T-shaped steel 500 to the entire partition, and then from the partition to the entire perimeter wall of the box. This allows the T-shaped steel 500 to fully play its role as a stiffening rib, greatly improving the stiffness and strength of the connection area between the transition plate 130 and the base frame 110.

[0065] Reference Figure 6 and Figure 12 An embodiment of the present invention also provides a housing connection transition joint, including a flange ring 700 and a housing connection transition section 100, wherein the flange ring 700 is fixed to the hexagonal connection end 140.

[0066] The assembly error of the transition section and the 300mm hexagonal box body is broken down into two processes: transition section-flange ring 700" and flange ring 700-hexagonal box body 300". By adjusting the gap at the bolt connection, the manufacturing and installation errors accumulated in the previous process are absorbed and compensated. The high-requirement field welding connection is transformed into a bolt connection with greater tolerance and simpler operation. This significantly reduces the difficulty of field installation and the precision requirements, and improves construction efficiency and reliability.

[0067] Specifically, in this embodiment, along the direction from the hexagonal connecting end 140 to the quadrilateral connecting end 120, the flange ring 700, the vertical rib 400, the first partition plate 600, the T-shaped steel 500, and the second partition plate 610 are arranged in sequence at intervals. The two ends of the vertical rib 400 are fixed to the flange ring 700 and the first partition plate 600, respectively, and the T-shaped steel 500 is fixed between the first partition plate 600 and the second partition plate 610.

[0068] Reference Figure 6 and Figure 7 The embodiments of the present invention also provide a box structure, including a quadrilateral box segment 200, a hexagonal box segment 300, and a box connection transition segment 100 or a box connection transition joint; wherein, when using the box connection transition segment 100, the quadrilateral connection end 120 of the box connection transition segment 100 is connected to the quadrilateral box segment 200, and the hexagonal connection end 140 of the box connection transition segment 100 is connected to the hexagonal box segment 300; when using the box connection transition joint, the quadrilateral connection end 120 of the box connection transition joint is connected to the quadrilateral box segment 200, and the flange ring 700 is connected to the hexagonal box segment 300.

[0069] The box-type transition section 100 is directly connected, and the transition section is directly connected to the box at both ends by welding, which achieves high connection rigidity and structural efficiency.

[0070] The transition joint uses a box-type connection with a 700mm flange ring. The flange ring is bolted to the 300mm hexagonal box, greatly simplifying the on-site installation process and providing excellent tolerance. This not only reduces installation difficulty and cost but also facilitates future maintenance or replacement of the transition joint.

[0071] Reference Figure 1 , Figure 2 and Figure 3 The embodiments of the present invention also provide a quay crane 10, wherein the columns 20 of the quay crane 10 adopt a box structure.

[0072] Integrating a transition section with low stress concentration and high fatigue performance into the main load-bearing component, column 20 of quay crane 10, directly improves the reliability of the entire force transmission path. Column 20 of quay crane 10 faces fatigue issues caused by high wind loads and its own weight. This structure directly addresses key design challenges of quay crane 10 by reducing the wind load factor (hexagonal cross-section) and improving fatigue strength at connections (smooth transition). This enhances the safety and stability of column 20 of quay crane 10 under extreme conditions such as storms. It also provides a structural foundation for achieving lightweight design and reducing drive power of quay crane 10.

[0073] The box-connection transition section 100 provided in this embodiment has at least the following advantages:

[0074] The transition section is composed of a quadrilateral base frame 110 and transition plates 130 connected to its edges, forming a variable cross-section box with a quadrilateral connection end 120 at one end and a hexagonal connection end 140 at the other. The form merges from quadrilateral to hexagonal. When a load is introduced from the quadrilateral box segment 200, the load is no longer concentrated at the four corners of the quadrilateral, but is redistributed and gently diffused to the six corner regions of the hexagonal connection end 140 through the guidance of the transition plate 130. This continuous change in cross-section avoids abrupt load changes, follows the basic mechanical principle of load continuity, and fundamentally eliminates the high stress concentration phenomenon at the abrupt change in cross-section.

[0075] Inside the transition section, axially spaced partitions, vertical ribs 400 located inside the transition plate 130, and T-shaped steel 500 or angle steel arranged along the connection line between the transition plate 130 and the base frame 110 are provided, and the reinforcing structure is fixedly connected to the partitions. The spaced partitions serve as internal transverse support frames, with their outer edges fitting against the inner wall of the box, effectively constraining the deformation of each panel 111 and the transition plate 130 under load, suppressing the distortion of the box section, and ensuring the stability of the designed geometry under load. At the same time, they provide reliable end fixing points for the internal reinforcing structure. The T-shaped steel 500 / angle steel is arranged on the connection line with the most complex stress, with one end fixed to the partition, which is equivalent to obtaining fixed support constraint. This allows the reinforcing ribs to more effectively bear and transfer bending and shear stress, distributing the load they share to the entire box perimeter through the partitions. The vertical ribs 400 further provide transverse support for the transition plate 130, preventing its local buckling. Upgrading the transition section from a thin-walled cylindrical structure to a high-rigidity spatial beam grid structure significantly improves overall and local stability and load-bearing efficiency.

[0076] The transition plates 130 are symmetrically arranged to form axisymmetric hexagonal connecting ends 140; the end edges of the base frame 110 panel 111 are constructed with beveled edges connecting to the transition plates 130. This symmetrical layout ensures uniform stiffness distribution, allowing loads to be transferred through multiple perfectly symmetrical paths, avoiding additional bending moments or torsion caused by asymmetry. The beveled design of the panel 111, connecting to the transition plate 130, forms a smooth weld joint and a continuous load channel. This not only improves weld quality but also further optimizes the load transition path in the corner region, resulting in a more uniform stress distribution.

[0077] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A box-connecting transition section for connecting the shapes of a quadrilateral box and a hexagonal box, characterized in that, include: A quadrilateral base frame, the base frame comprising at least four panels connected end to end in sequence, forming quadrilateral connection ends; And at least two transition plates, which are connected to the side edges of the base frame, and the base frame and the at least two transition plates together form a hexagonal connection end.

2. The box-connection transition section according to claim 1, characterized in that: The transition plate is a triangular plate.

3. The box-connection transition section according to claim 2, characterized in that: The number of transition plates is four, and the four transition plates are symmetrically connected to the four edges of the base frame, so that the cross-section of the hexagonal connection end forms an axisymmetric hexagon.

4. The box-connection transition section according to claim 2, characterized in that: At least one panel of the base frame has its side edge constructed as a bevel, and the two sides of the transition plate are respectively connected to the side edges of two adjacent panels.

5. The box-connection transition section according to claim 1, characterized in that: The box-connecting transition section also includes a reinforcing structure, which is disposed on the inner side of the transition plate.

6. The box-connection transition section according to claim 5, characterized in that: The reinforcing structure includes vertical ribs, which are vertically fixed to the inner side of the transition plate, and one end of the vertical ribs extends to the end of the hexagonal connecting end.

7. The box-connection transition section according to claim 6, characterized in that: The reinforcing structure also includes T-shaped steel or angle steel arranged along the connection line between the transition plate and the base frame.

8. The box-connection transition section according to claim 7, characterized in that, The box-connecting transition section also includes a first partition; the first partition is fixed to the inner side of two adjacent transition plates and to the transition plates, and the end of the vertical rib is fixed to the first partition.

9. The box-connection transition section according to claim 8, characterized in that, The box-type connecting transition section also includes a second partition; the first partition and the second partition are fixed at intervals in the space enclosed by the base frame and the transition plate along the direction from the hexagonal connecting end to the quadrilateral connecting end, and the outer edges of the first partition and the second partition are attached to the inner side of the base frame and the transition plate; one end of the T-shaped steel or the angle steel is fixed to the first partition.

10. A housing connection transition joint, characterized in that, It includes a flange ring and a box-connection transition section as described in any one of claims 1-9, wherein the flange ring is fixed to the hexagonal connection end.

11. A box structure, characterized in that, It includes a quadrilateral box section, a hexagonal box section, and a box connection transition section as described in any one of claims 1-9 or a box connection transition joint as described in claim 10; In the case of using the box-type connecting transition section, the quadrilateral connecting end of the box-type connecting transition section is connected to the quadrilateral box section, and the hexagonal connecting end of the box-type connecting transition section is connected to the hexagonal box section. When the housing connection transition joint is used, the quadrilateral connection end of the housing connection transition joint is connected to the quadrilateral housing section, and the flange ring is connected to the hexagonal housing section.

12. A quay crane, characterized in that, The columns of the quay crane adopt the box structure described in claim 11.

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