CN222665187U - Heavy crane supporting cylinder base structure of large crane ship - Google Patents

Abstract

The application discloses a heavy crane supporting cylinder base structure of a large crane ship, which relates to the technical field of ship construction and comprises a first cylinder, a second cylinder and a reinforcing structure, wherein one end of the second cylinder is arranged on a ship bottom plate, the other end of the second cylinder is in butt joint with the first cylinder, the first cylinder is exposed out of a ship deck, the first cylinder and the second cylinder both comprise a plurality of cylinder layers, the inner cylinder wall of the first cylinder and the inner cylinder wall of the second cylinder are both provided with the reinforcing structure, part of the reinforcing structure in the first cylinder extends to be attached to the inner cylinder wall of the second cylinder, and the second cylinder is also internally provided with the supporting structure. The heavy crane supporting cylinder base structure of the large crane ship provided by the embodiment of the application effectively solves the supporting requirement of the heavy crane of the large crane ship, and has the advantages of strong load and small deformation after molding.

Description

Heavy crane supporting cylinder base structure of large crane ship

Technical Field

The application relates to the technical field of ship construction, in particular to a heavy crane supporting cylinder base structure of a large crane ship.

Background

Heavy crane support base structures for large crane vessels are often attached below the deck of the vessel, and sometimes even to the bottom deck. The supporting structure of the heavy crane of the large crane ship is generally a cylindrical structure, and has the characteristics of huge volume (the diameter of the cross section of the cylinder can be 10 meters to 20 meters, and the diameter of the cross section of the cylinder can be 500 tons to approximately 1000 tons, and the like), high precision requirement of an upper interface surface (the precision requirements of levelness, ovality, circumference of the cylinder, deflection of a central shaft of the cylinder and the like of the upper surface of the supporting cylinder base are higher than the conventional precision requirement of a ship structure), and the like.

Disclosure of utility model

The present application aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the embodiment of the application provides a heavy crane supporting cylinder base structure of a large crane ship, which effectively solves the supporting requirement of the heavy crane of the large crane ship, and has strong load and small deformation after forming.

According to the embodiment of the application, a heavy crane supporting cylinder base structure of a large crane ship is provided, and comprises a first cylinder, a second cylinder and a reinforcing structure, wherein one end of the second cylinder is installed on a ship bottom plate, the other end of the second cylinder is in butt joint with the first cylinder, the first cylinder is exposed out of a ship deck, the first cylinder and the second cylinder both comprise a plurality of cylinder layers, the inner cylinder wall of the first cylinder and the inner cylinder wall of the second cylinder are both provided with the reinforcing structure, part of the reinforcing structure in the first cylinder extends to be attached to the inner cylinder wall of the second cylinder, and the second cylinder is also internally provided with the supporting structure.

According to the heavy crane supporting cylinder base structure of the large crane ship, the cylinder layer comprises at least 4 splicing pieces, the splicing pieces are arc-shaped plates, all the splicing pieces are in butt joint end to end in sequence, and the butt joint positions of two adjacent splicing pieces are in vertical butt joint welding.

According to the heavy crane supporting cylinder base structure of the large crane ship, the vertical welding lines formed by vertical butt welding of any two layers of cylinder layers are not in the same straight line.

According to the heavy crane supporting cylinder base structure of the large crane ship, the vertical distance between the vertical welding lines of two adjacent cylinder layers is larger than 0.3 meter in the state that the first cylinder or the second cylinder is unfolded along the bus.

According to the heavy crane supporting cylinder base structure of the large crane ship, all vertical welding lines close to the same vertical direction are arranged in a step shape.

According to the heavy crane supporting cylinder base structure of the large crane ship, the reinforcing structure comprises a plurality of first reinforcing pieces and second reinforcing pieces, the first reinforcing pieces are vertically arranged, the first reinforcing pieces are arranged on the second cylinder or the inner cylinder wall of the first cylinder, the first reinforcing pieces span between two ends of the second cylinder or the first cylinder, the second reinforcing pieces are annular, the second reinforcing pieces are arranged in an array along the vertical direction, and all the first reinforcing pieces are fixedly connected with the second reinforcing pieces.

According to the heavy crane supporting cylinder base structure of the large crane ship, the first reinforcing piece of the first cylinder extends to be attached to the inner cylinder wall of the second cylinder.

According to the heavy crane supporting cylinder base structure of the large crane ship, the supporting structure comprises a supporting seat inner cylinder, a plurality of radial bottom trusses, a plurality of transverse reinforcing walls and a longitudinal reinforcing wall, the supporting seat inner cylinder is vertically arranged and positioned in the center of the second cylinder, the radial bottom trusses and the transverse reinforcing walls are circumferentially arrayed in the horizontal direction by taking the supporting seat inner cylinder as the center, and two sides of the transverse reinforcing walls or two sides of the longitudinal reinforcing walls are respectively connected with the supporting seat inner cylinder and the second cylinder.

According to the heavy crane supporting cylinder base structure of the large crane ship, the transverse reinforcing wall and the longitudinal reinforcing wall form a cross structure in a top view.

According to the heavy crane supporting cylinder base structure of the large crane ship, the second cylinder comprises at least 5 layers of cylinder layers, the first cylinder comprises at least two layers of cylinder layers, and the height of the first cylinder is at least 4 meters.

The heavy crane supporting cylinder base structure of the large crane ship has the advantages that the first cylinder and the second cylinder adopt segmentation/sheet division so as to improve the construction precision and reduce the deformation generated by welding, and in addition, the structural rigidity and the load capacity of the cylinders are further improved by the arrangement of the reinforcing structure and the supporting structure, so that the supporting cylinder base structure of the heavy crane ship can meet the supporting requirement of the heavy crane of the large crane ship.

Drawings

The application is further described below with reference to the drawings and examples;

FIG. 1 is a schematic illustration of the connection of a heavy duty crane support cylinder base to a hull of an embodiment of the present application;

FIG. 2 is a schematic illustration of a segmented construction of a bilge plate in an embodiment of the application;

FIG. 3 is a schematic illustration of a segmented construction of a hull deck in an embodiment of the application;

FIG. 4 is an expanded schematic view of the wall structure of the base of the support cylinder of the heavy-duty crane according to the embodiment of the application;

FIG. 5 is an overhead view of a heavy duty crane support cylinder base of an embodiment of the application;

FIG. 6 is an M-direction view of FIG. 5;

FIG. 7 is a cross-sectional view taken along the direction A-A in FIG. 5;

FIG. 8 is a cross-sectional view taken along the direction B-B in FIG. 5;

FIG. 9 is a cross-sectional view taken along the direction C-C in FIG. 5;

FIG. 10 is a cross-sectional view taken along the direction D-D in FIG. 5;

FIG. 11 is a cross-sectional view taken along the line A1-A1 in FIG. 7;

FIG. 12 is a schematic view of a barrel layer structure according to an embodiment of the present application;

FIG. 13 is a schematic view of the welding of the first stiffener to the second cylinder or first cylinder in an embodiment of the present application;

Fig. 14 is a schematic view of a horizontal butt weld in an embodiment of the application.

Detailed Description

Reference will now be made in detail to the present embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present application, but not to limit the scope of the present application.

In the description of the present application, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

In the description of the present application, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1, the hull of the embodiment of the application comprises a hull deck 210 and a bottom plate 260, wherein a hull cabin is arranged between the hull deck 210 and the bottom plate 260, the hull cabin is divided by a transverse bulkhead, an inclined bulkhead and a middle longitudinal bulkhead, wherein a heavy crane support cylinder base of the application penetrates through the hull deck 210 and extends to the bottom plate 260, and a part of the heavy crane support cylinder base is exposed outside the hull deck 210.

The application discloses a heavy crane supporting cylinder base, which comprises a first cylinder 110, a second cylinder 120 and a reinforcing structure, in particular, one end of the second cylinder 120 is arranged on a ship bottom plate 260, the other end of the second cylinder 120 is in butt joint with the first cylinder 110, the first cylinder 110 is exposed out of a ship deck 210, the first cylinder 110 and the second cylinder 120 both comprise a plurality of cylinder layers 140, the inner cylinder wall of the first cylinder 110 and the inner cylinder wall of the second cylinder 120 are both provided with the reinforcing structure, wherein part of the reinforcing structure in the first cylinder 110 extends to be attached to the inner cylinder wall of the second cylinder 120, and the second cylinder 120 is also internally provided with the supporting structure.

Further, the barrel layer 140 includes at least 4 splicing pieces 101, the splicing pieces 101 are arc-shaped plates, all the splicing pieces 101 are in butt joint end to end in sequence, and the butt joint parts of two adjacent splicing pieces 101 are in butt joint welding vertically. The two adjacent barrel layers 140 are welded by horizontal butt joint.

Compared with the prior art, the first cylinder 110 and the second cylinder 120 of the application adopt segmentation/sheet division so as to improve the construction precision and reduce the deformation generated by welding, and in addition, the arrangement of the reinforcing structure and the supporting structure further improves the structural rigidity and the load capacity of the cylinder, so that the supporting cylinder base structure of the application can meet the supporting requirement of a heavy crane of a large crane ship.

When the ship body is assembled, the ship bottom section is firstly assembled, as shown in fig. 2, the ship bottom section is divided into a first subsection 261, a second subsection 262, two symmetrical third subsections 263 and two symmetrical fourth subsections 264, the first subsection 261 is used as a main bearing part of the heavy crane supporting cylinder base, positioning holes are formed in the main bearing part, and the rest of the positioning holes are distributed around the periphery of the first subsection 261. When the heavy crane supporting cylinder base is built, the splicing piece 101 is prefabricated, the ship bottom plate 260 is taken as a plane, the installation position of the second cylinder 120 and the checking and contrasting line are positioned on the ship bottom plate 260, wherein the installation position of the second cylinder 120 refers to the central shaft position of the second cylinder 120, and the checking and contrasting line refers to the circumference theoretical line of the inner cylinder wall and the outer cylinder wall of the second cylinder 120.

After the above is finished, as shown in fig. 7 to 11, a supporting structure is built at the installation position, the supporting structure comprises a supporting seat inner cylinder 134, a plurality of radial bottom trusses 135, a plurality of transverse reinforcing walls 136 and a longitudinal reinforcing wall 139, the supporting seat inner cylinder 134 is vertically arranged and is positioned at the center of the second cylinder 120, the radial bottom trusses 135 and the transverse reinforcing walls 136 are all in a circumferential array along the horizontal direction by taking the supporting seat inner cylinder 134 as the center, two sides of the transverse reinforcing walls 136 or two sides of the longitudinal reinforcing walls 139 are respectively connected with the supporting seat inner cylinder 134 and the second cylinder 120, in the embodiment of the application, two sides of the transverse reinforcing walls 136 are respectively connected with the supporting seat inner cylinder 134 and the second cylinder 120, and two sides of the longitudinal reinforcing walls 139 are respectively connected with the supporting seat inner cylinder 134 and the second cylinder 120. Further, the supporting structure further comprises a plurality of inner bottom longitudinal ribs 138, the inner bottom longitudinal ribs 138 are steel hot rolled sections, the length direction of the inner bottom longitudinal ribs is parallel to the fore-and-aft direction of the ship, the bottom of the inner bottom longitudinal ribs is welded on the bottom plate 260, the inner bottom longitudinal ribs penetrate through the transverse reinforcing wall 136, and the two end parts of the inner bottom longitudinal ribs are welded on the inner wall of the second cylinder 120.

The radial bottom trusses 135 are arranged along the horizontal direction, the radial bottom trusses 135 are trusses (T-shaped materials) welded on the bottom plate, the inner supporting seat cylinder 134 is arranged along the vertical direction, and can be understood with reference to fig. 7 to 10, wherein the inner supporting seat cylinder 134 is one and vertically arranged, when the inner supporting seat cylinder 134 is hoisted, whether the inner supporting seat cylinder 134 is positioned at the central axis of the second cylinder 120 needs to be detected, the radial bottom trusses 135 are arranged in a circumferential array with the inner supporting seat cylinder 134 as the center, after the radial bottom trusses 135 and the inner supporting seat cylinder 134 are assembled, the inner supporting seat cylinder 134 is provided with the transverse reinforcing wall 136 and the longitudinal reinforcing wall 139, and the transverse reinforcing wall 136 and the longitudinal reinforcing wall 139 form a cross structure in the top view. The radial bottom truss 135 extends from the inner cylinder wall of the second cylinder 120 to the outer wall of the inner cylinder 134 of the supporting seat, and the supporting framework not only plays a role in supporting the inside of the second cylinder 120, but also plays a role in supporting the jig frame when the second cylinder 120 is built, and no additional temporary jig frame is needed when the cylinder structure is built.

After the supporting structure is built, a plurality of splicing pieces 101 are hung into a checking line, the splicing pieces 101 are butted in sequence from head to tail in the checking line to form an unshaped barrel layer 140, when a measured value between the unshaped barrel layer 140 and the checking line is at a preset value, the preset value refers to a difference value between an inner ring or an outer ring of the barrel layer 140 and a circumference theoretical line, the preset value is generally 1 mm-2 mm, the butted positions of two adjacent splicing pieces 101 are vertically butted and welded to form the molded barrel layer 140, and the butted positions of the splicing pieces 101 and the ship bottom plate 260 are horizontally butted and welded to determine that the first barrel layer 140 is firmly fixed with the ship bottom plate 260.

In particular, as shown in fig. 11, the barrel layer 140 in the embodiment of the present application is formed by butt-jointing four splicing pieces 101, and in the vertical butt-welding, the butt-joint positions of two adjacent splicing pieces 101 are set to be A1, A2, B1, and B2, and the vertical butt-welding of each layer is performed according to the following formulation sequence, namely an automatic welding machine a (welding machine a1→a2), and a cylindrical circular seam automatic welding machine B (welding machine B1→b2. The first and second are welded synchronously in the same direction and at a similar speed.

In particular, as shown in fig. 14, the outer circumference of the second cylinder 120 or the first cylinder 110 may be divided into 36 parts in advance, and when the two adjacent cylinder layers 140 are welded or the cylinder layers 140 are welded with the bottom plate 260, the two cylinder girth automatic welding machines (or two welders) are used for welding together, and the operation parameters of the two cylinder girth automatic welding machines are required to be set to be consistent (the operation skills of the two welders are required to be relatively consistent), so that the welding speeds are similar to ensure that the heat input energy of the welding seams is equal. The vertical angle joint welding seams of the cylindrical outer shell plate and the vertical strengthening material are welded in turn by adopting a split symmetrical skip welding method according to the formulated welding sequence, and each welding seam in the groove is required to be executed according to the formulated sequence of an automatic welding machine A (welding tool A): M1- & gt M2- & gt M3- & gt M18, and an automatic welding machine B (welding tool B): N1- & gt N2- & gt N3- & gt N18.

As shown in fig. 12, a plurality of splicing pieces 101 are sequentially butted end to end on a formed barrel layer 140 to form an unformed barrel layer 140, so that a measured value between the unformed barrel layer 140 and a checking and contrasting line is at a preset value, specifically, plumb lines are hung from two end points of the upper edge and a circular arc center point of each splicing piece 101 to a bottom board 260 (to be noted, a plumb line method can be adopted in practical operation, but the method is not limited to be adopted for precision checking and control), a deviation value of a circumferential theoretical line of an outer barrel wall at the bottom board 260 is checked, after the precision of controlling and adjusting the outer barrel wall is not out of standard, the butted joint of two adjacent splicing pieces 101 of the unformed barrel layer 140 is vertically butted and welded, and the butted joint of the splicing pieces 101 of the adjacent two barrel layers 140 is horizontally butted and welded so as to construct a second barrel layer on the basis of the first barrel layer 140. In the embodiment of the present application, the vertical butt welding and the horizontal butt welding are performed by a split symmetrical skip welding method, the horizontal welding lines 103 formed by the horizontal butt welding are arranged along the horizontal direction, and the vertical welding lines 102 formed by the vertical butt welding are arranged along the vertical direction. The above steps of forming the cylinder layer 140 are repeated until the second cylinder 120 is formed, and in the embodiment of the present application, the second cylinder 120 includes at least 5 cylinder layers 140, and of course, the optimal number of layers may be selected according to practical situations.

Further, a reinforcing structure is disposed in the second cylinder 120, and the reinforcing structure can improve the overall structural rigidity of the second cylinder 120 and improve the load capacity.

The sheet structure of the in-cylinder deck 209 is hoisted, and before hoisting and installing, the in-cylinder deck longitudinal ribs 137 and the deck girders 131 are welded below the in-cylinder deck 209 to form the sheet structure.

The above steps of forming the cylinder layer 140 on the second cylinder 120 are repeated until the first cylinder 110 is formed, and in this embodiment, the first cylinder 110 includes at least two cylinder layers 140, in this embodiment, the cylinder layers 140 of the first cylinder 110 are provided with two layers, the height of the first cylinder 110 is at least 4 meters, and the height of the first cylinder 110 in this embodiment is 4 meters.

The first cylinder 110 is also provided with a reinforcing structure, which can improve the overall structural rigidity of the first cylinder 110 and improve the load capacity.

In this embodiment, the outer cylinder wall of the second cylinder 120 is welded to the hull bulkhead, and the first cylinder 110 is exposed on the hull deck 210. The heavy-duty crane supports the overall height of the drum base to 13.5 meters, as shown in fig. 1, the outer drum wall of the second drum 120 is welded to the center longitudinal bulkhead 220, the inclined bulkhead 230, the transverse bulkhead 250, and a portion of the outer drum wall of the second drum 120 is welded to the inner floor 240.

In the embodiment of the present application, as shown in fig. 3, the hull deck 210 is divided into 11 sections, which are respectively two symmetrical first cabin areas 211, two symmetrical second cabin areas 212, a third cabin area 213, a fourth cabin area 214, two symmetrical fifth cabin areas 215 and two piled sixth cabin areas 216. The 11 sections of the hull deck 210 are welded to the second cylinder 120 and the bottom section to form the respective hull cabins.

Fig. 4 shows a preferred embodiment of the present application, in which the cylindrical wall structure of the base of the support cylinder of the heavy-duty crane is unfolded and schematically shown, and is mainly composed of 7 cylinder layers 140, each cylinder layer 140 is formed by welding at least 4 splicing pieces 101 with the same specification and shape, and the splicing pieces 101 are arc-shaped plates so as to be capable of being connected end to form an annular cylinder layer 140.

As shown in fig. 4 and fig. 6, the vertical welding lines 102 formed by the vertical butt welding of any two cylinder layers 140 are not in the same straight line, the circular arc circumferential distance between the vertical welding lines 102 of the adjacent two cylinder layers 140 is greater than 0.3 m, and all the vertical welding lines 102 close to the same vertical direction are arranged in a step shape. That is, the vertical welding lines 102 of each layer of the cylinder layer are not on the same vertical line, but are staggered by at least 300mm, the vertical welding lines 102 are distributed in a step shape, and the arrangement mode can cause the increase of the construction difficulty, but is beneficial to the stress of the base of the supporting cylinder, similar to a pressure container, the supporting cylinder wall needs to avoid cross welding seams, the stress concentration at the intersection of the cross welding seams easily causes material fatigue and crack, and the uniformity and the stability of the structure of the cylinder wall are unfavorable. The crane base bears huge tensile, compressive and bending stresses, and the cross welding seam of the cylinder wall structure is avoided.

Further, as shown in fig. 7 to 10, the second cylinder 120 is further provided therein with an inner deck longitudinal frame 137, a deck girder 131 and an inner hull deck 209, the top of the inner deck longitudinal frame 137 and the top of the deck girder 131 are welded under the hull deck 209, the inner deck longitudinal frame 137 is a steel hot rolled section, the length direction thereof is parallel to the fore-and-aft direction of the ship, the two ends are welded on the inner wall of the second cylinder 120, and the two ends of the deck girder 131 are welded on the inner cylinder 134 and the second cylinder 120 respectively. The first cylinder 110 is installed after the inner hull deck 209, the deck girder 131, and the inner deck longitudinal 137 of the top cylinder of the second cylinder 120 are installed.

In the embodiment of the present application, as shown in fig. 5 and fig. 7 to 11, the reinforcing structure includes a plurality of first reinforcing members 133 and second reinforcing members 132, the first reinforcing members 133 are vertically disposed, the first reinforcing members 133 are arranged on the inner wall of the second cylinder 120 or the first cylinder 110 in an array manner, the second reinforcing members 132 are annular, the second reinforcing members 132 are arranged in an array manner along the vertical direction, and all the first reinforcing members 133 are fixedly connected with the second reinforcing members 132. In addition, in order to ensure continuity of the first reinforcement 133 of the crane supporting cylinder base, it is necessary to avoid the occurrence of a process fracture of the first reinforcement 133 at the horizontal plane as much as possible, so that the first reinforcement 133 of the second cylinder 120 below the hull deck 210 is not provided with a process fracture, but is installed entirely. The base of the supporting cylinder body is used as the most critical part of the stress of the crane ship and is closely related to the operation safety of the crane, so that a manufacturing mode which is more beneficial to the stress of the crane is preferentially adopted.

As shown in fig. 10, the first reinforcement 133 of the first cylinder 110 extends to the upper surface of the inner hull deck 209 inside the second cylinder 120 and is bonded to the highest cylinder layer 140 of the second cylinder 120, so that the junction between the first cylinder 110 and the second cylinder 120 is more stable.

The welding of the first reinforcement 133 and the first cylinder 110 or the second cylinder 120 is performed by means of split symmetrical skip welding, specifically, as shown in fig. 13, two automatic welding machines (or two welders) are used for welding together, and the operation parameters of the two automatic welding machines are required to be set to be consistent (the operation skills of the two welders are required to be similar to each other) so as to enable the welding speeds to be similar to ensure that the heat input energy of the welding seams is equal. The vertical corner welds of the first cylinder 110 or the second cylinder 120 and the first stiffener 133 are respectively wheel welded in the established welding sequence by adopting a split symmetrical skip welding method, and each weld in the cylinder is required to be carried out according to the established sequence of automatic welding machine A (welding machine A): C1→C2→C3→C18, and automatic welding machine B (welding machine B): D1→D2→D3→D18.

The construction process adopts segmentation/lamellar division so as to improve construction precision and reduce deformation caused by welding, and in addition, reasonable arrangement of welding lines and construction sequences is beneficial to ensuring that welding shrinkage deformation is controllable, optimizing welding modes and welding sequences, and precisely controlling the precision of the combination process, so that construction of a heavy crane supporting barrel base structure of a large crane ship can be realized.

In other embodiments, the heavy crane support cylinder base construction of a large crane vessel may also take the following form:

The construction mode of the second cylinder 120 below the hull deck 210 is similar to the construction process, the part above the hull deck 210 is reversely constructed by taking the top of the first cylinder 110 as the bottom, the line is drawn on the working surface, the first cylinder 110 is constructed, the top of the first cylinder 110 is matched with the working surface in a line drawing degree, and the ovality and the circumferential length precision of the upper opening of the base of the whole crane supporting cylinder can be controlled easily. In addition, the crane support cylinder structure is constructed separately below the hull deck 210 and above the hull deck 110, and can be constructed simultaneously, thereby shortening the period.

In the third construction mode, as shown in fig. 4, the outer cylinder wall and the supporting structure of the second cylinder 120 are divided into two halves along the stepped welding line 102, in the construction mode, the construction of the second cylinder 120 is similar to the construction process disclosed by the application, only the corresponding structure and the cylinder wall welding seam at the stepped welding line 102 are not welded first, and the whole 120 cylinder is still constructed as a whole, only can be disassembled and transported during transportation, so that on one hand, better control over construction precision such as ovality, circumferential length and cylinder axis perpendicularity of the supporting cylinder is ensured, and on the other hand, the size and weight of each part are reduced after disassembly, and the lifting is convenient. In addition, because the transferring weight and the transferring size become smaller, the first cylinder 110 can be built in a workshop, the period of a slipway is not occupied, the operation environment is indoor, the operation is more beneficial than the operation of an outdoor slipway, and correspondingly, the first cylinder 110 can be also divided into two halves along the stepped welding line 102 for pre-folding construction.

The fourth and fifth construction modes are to perform different pre-folding seam design combinations on the base structure of the heavy crane supporting cylinder according to the resource conditions of the shipyard so as to further reduce the weight and the size of the cylinder structure during transportation, and the construction mode is similar to the construction mode.

The embodiments of the present application have been described in detail with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application.

Claims (10)

1. The heavy crane supporting cylinder base structure of the large crane ship is characterized by comprising a first cylinder (110), a second cylinder (120) and a reinforcing structure, wherein one end of the second cylinder (120) is installed on a ship bottom plate (260), the other end of the second cylinder is in butt joint with the first cylinder (110), the first cylinder (110) is exposed out of a ship deck (210), the first cylinder (110) and the second cylinder (120) comprise a plurality of cylinder layers (140), the inner cylinder wall of the first cylinder (110) and the inner cylinder wall of the second cylinder (120) are both provided with the reinforcing structure, part of the reinforcing structure in the first cylinder (110) extends to be attached to the inner cylinder wall of the second cylinder (120), and the second cylinder (120) is also internally provided with the supporting structure.

2. The heavy crane supporting cylinder base structure of a large crane ship according to claim 1, wherein the cylinder layer (140) comprises at least 4 splicing pieces (101), the splicing pieces (101) are arc-shaped plates, all the splicing pieces (101) are in butt joint end to end in sequence, and the butt joint positions of two adjacent splicing pieces (101) are in butt joint welding vertically.

3. The heavy crane supporting cylinder base structure of a large crane vessel according to claim 2, wherein vertical welding lines (102) formed by vertical butt welding of any two cylinder layers (140) are not collinear.

4. A heavy crane supporting drum base structure for a large crane vessel according to claim 3, wherein a vertical distance between said vertical weld lines (102) of adjacent two drum layers (140) in a state where said first drum (110) or said second drum (120) is spread along a bus bar is more than 0.3 m.

5. The heavy crane supporting cylinder base structure of a large crane vessel according to claim 4, wherein all vertical weld lines (102) near the same vertical direction are arranged in a stepwise manner.

6. The heavy crane supporting cylinder base structure of a large crane ship according to claim 1, wherein the reinforcing structure comprises a plurality of first reinforcing members (133) and second reinforcing members (132), the first reinforcing members (133) are vertically arranged, the first reinforcing members (133) are arranged on the inner cylinder wall of the second cylinder (120) or the first cylinder (110) in an array, the first reinforcing members (133) span between two ends of the second cylinder (120) or the first cylinder (110), the second reinforcing members (132) are annular, the second reinforcing members (132) are arranged in an array along the vertical direction, and all the first reinforcing members (133) are fixedly connected with the second reinforcing members (132).

7. The heavy crane support cylinder base structure of a large crane vessel according to claim 6, wherein said first reinforcement (133) of said first cylinder (110) extends to fit the inner cylinder wall of said second cylinder (120).

8. The heavy crane supporting cylinder base structure of the large crane ship according to claim 7, wherein the supporting structure comprises a supporting seat inner cylinder (134), a plurality of radial bottom trusses (135), a plurality of transverse reinforcing walls (136) and a longitudinal reinforcing wall (139), the supporting seat inner cylinder (134) is vertically arranged and positioned at the center of the second cylinder (120), the radial bottom trusses (135) and the transverse reinforcing walls (136) are all circumferentially arrayed in the horizontal direction by taking the supporting seat inner cylinder (134) as the center, and two sides of the transverse reinforcing walls (136) or two sides of the longitudinal reinforcing walls (139) are respectively connected with the supporting seat inner cylinder (134) and the second cylinder (120).

9. The heavy crane support cylinder foundation structure of a large crane vessel according to claim 8, characterized in that said transverse reinforcement wall (136) and said longitudinal reinforcement wall (139) constitute a cross-shaped structure as seen in top view.

10. The heavy crane support cylinder base structure of a large crane vessel according to claim 1, wherein said second cylinder (120) comprises at least 5 layers of said cylinder layers (140), said first cylinder (110) comprises at least two layers of said cylinder layers (140), and the height of said first cylinder (110) is at least 4 meters.