Fixing support and fixing method for LNG ship board top segment

Abstract

The invention relates to the field of LNG ship building, in particular to a fixing support and a fixing method for LNG ship side top fragments, the fixing support comprises a jig frame, a connecting plate set and at least two sets of stand column supporting tools, the jig frame is fixed to a basic plane, and the at least two sets of stand column supporting tools are arranged on the same side of the jig frame and distributed at intervals; one end of the connecting plate set is connected with the stand column supporting tool, the other end of the connecting plate set extends into the jig frame, the stand column supporting tool is provided with a main supporting face making contact with the outer surface of the trunk deck, and the connecting plate set is provided with an auxiliary supporting face making contact with the horizontal outer surface of the outer inclined side plate. According to the fixed support and the fixing method, aiming at the structural characteristics of a current mainstream LNG ship, a fixed top segment supporting method is adopted, the outer surface of the trunk deck directly leans against the inclined supporting piece, the repairing and polishing work caused by direct welding of a supporting material and the trunk deck is avoided, meanwhile, the problem of repeated disassembly and assembly of the support is solved, and the working efficiency is improved. The production efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of LNG ship construction, and in particular to a fixing support and a fixing method for a side top segment of an LNG ship. Background Art

[0002] Large LNG ships are manufactured in a fragmented manner. As an important structure on LNG ships, the sheer segment is usually manufactured in a reverse manner, that is, it is manufactured on a frame with the outer oblique side plate as the horizontal base surface. Due to the structural characteristics of the sheer segment, the well deck and the outer oblique side plate form an angle of 135 degrees. When the outer oblique side plate is placed on the frame, the center of gravity of the well deck piece floats outward and is easy to tip over.

[0003] In the related technology, to solve this problem, the shipyard generally arranges angle iron supports on the inclined surface of the well deck. One end of the angle iron support is welded to the ground and the other end is welded to the inclined surface of the well deck to prevent the well deck from tipping over. This technology has the following shortcomings:

[0004] 1. The connection between the angle iron support and the trunk deck is fixed by welding. After the side top segment is completed, this part needs to be removed. The removal will inevitably leave marks on the trunk deck, which needs to be further polished by hand;

[0005] 2. The temporary support materials used are often disassembled and assembled. On the one hand, the quality of the support materials is difficult to guarantee, and on the other hand, it will also generate excess waste;

[0006] 3. The safety of the temporary support is affected by the quality of the welding at the contact point between the temporary support and the well deck. If the construction workers do not fully weld, the welding points may collapse and the well deck fragments may collapse, which poses a great potential safety risk. Summary of the invention

[0007] In view of this, the present invention provides a fixed support and a fixing method for a side top segment of an LNG ship, so as to solve the problems in the related art.

[0008] On the one hand, the present invention provides a fixed support for a side top segment of an LNG ship, using the following technical solution:

[0009] A fixed support for a side top segment of an LNG ship comprises a tire frame, a connecting plate group and a column support tooling, wherein the tire frame is fixed on a foundation surface, the column support tooling is arranged on the same side of the tire frame and is distributed at intervals, one end of the connecting plate group is connected to the column support tooling, and the other end extends toward the inside of the tire frame, the column support tooling has a main support surface in contact with the outer surface of the well deck, and the connecting plate group has a secondary support surface in contact with the horizontal outer surface of the outer oblique side plate.

[0010] Optionally, the connecting plate group includes at least three transverse tire frame connecting plates connected end to end, each of the transverse tire frame connecting plates is welded to the tire frame, the lower surface of the outer oblique side plate is in contact with the transverse tire frame connecting plate, and the secondary supporting surface is the contact surface between the transverse tire frame connecting plate and the outer oblique side plate.

[0011] Optionally, the column supporting tooling includes two supporting columns, two vertical supporting members and an inclined supporting member, the two vertical supporting members are respectively fixed on the two supporting columns, the two ends of the inclined supporting member are respectively connected to the two vertical supporting members, and the main supporting surface is the side of the inclined supporting member facing away from the vertical supporting member.

[0012] Optionally, embedded iron is provided on the foundation surface, and one end of the support column away from the vertical support member is welded and fixed to the embedded iron.

[0013] Optionally, the distance between one end of the tire frame close to the supporting column and the lower edge of the well deck is 180 mm.

[0014] On the other hand, the present invention also provides a method for fixing a side top segment of an LNG ship, comprising the following steps:

[0015] S1: Make a tire frame that intersects vertically and horizontally on the foundation surface;

[0016] S2: pre-embedded iron is arranged on the foundation surface, and the pre-embedded iron is located on one side of the tire frame;

[0017] S3: Fully weld and fix two sets of column support fixtures on the embedded iron, and the two sets of column support fixtures are located on the same straight line and have the same distance from the tire frame;

[0018] S4: Three transverse tire frame connecting plates are arranged below the horizontal plane of the tire frame, one end of which is connected to the surface of the column support fixture and the other end extends into the tire frame. The connection points between the transverse tire frame connecting plates and the column support fixture and the tire frame are fully welded and fixed;

[0019] S5: hoist the outer oblique side plate of the gunwale segment onto the tire frame;

[0020] S6: hoist the well deck to the side of the outer oblique side plate close to the column support fixture, so that the well deck rests on the main support surfaces of the two sets of column support fixtures, and at the same time adjust the position of the well deck so that the well deck is connected to the preset connection point of the outer oblique side plate;

[0021] S7. Temporarily fix the joint between the well deck and the outer inclined side plate using a horse board or a hand winch.

[0022] Optionally, the steps for making the column support tooling in step S3 are:

[0023] S3a: The two round piers are refitted and four connecting plates are set at the top and bottom of the round piers to form supporting columns;

[0024] S3b: The notches of two standard channel steels are butted together to form a vertical support member, and one end of the vertical support member is welded and fixed to the supporting column;

[0025] S3c: bevel the top of the vertical support member to a certain angle;

[0026] S3d: The notches of two standard channel steels are butted together to form an inclined support member, and the two ends of the inclined support member are welded and mounted on the top of the vertical support member.

[0027] Optionally, in step S3, the distance between the two groups of column support fixtures and the tire frame is 1.5 m, and the distance between the two groups of column support fixtures is 11 m.

[0028] In summary, the present invention includes at least one of the following beneficial technical effects:

[0029] 1. This fixed support and fixing method is based on the structural characteristics of the current mainstream LNG carriers. It adopts a fixed sheer top segment support method. The outer surface of the well deck directly relies on the inclined support, avoiding the repair and grinding work caused by direct welding of the support material to the well deck, and at the same time eliminating the problem of disassembling and assembling the support back and forth, with high production efficiency;

[0030] 2. The overall structural strength of the column support tooling meets the weight requirements, and is arranged in conjunction with the transverse tire frame connecting plate to make the gravity distribution of the well deck more uniform, ensuring the overall stability of the fixed support and a high safety factor.

[0031] 3. By adopting this fixed support method, the column support tooling and the horizontal tire frame connecting plate can be reused, which is convenient for disassembly and assembly and saves materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the main body side structure of an embodiment of the present invention.

[0033] Figure 2 It is a front view structural schematic diagram of the column supporting tooling according to an embodiment of the present invention.

[0034] Figure 3 It is a schematic side structural diagram of a column support tooling according to an embodiment of the present invention.

[0035] Figure 4 It is a fixed flow chart of the gunwale segment.

[0036] Figure numerals: 01, well deck; 02, outer inclined side plate; 1, tire frame; 2, column support tooling; 21, support column; 22, vertical support member; 23, inclined support member; 3, embedded iron; 4, connecting plate group; 41, horizontal tire frame connecting plate; 5, hand winch. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0038] The embodiment of the present invention discloses a fixed support for the side section of an LNG ship, which is specifically used in the assembly process of the well deck 01 and the outer oblique side plate 02 when manufacturing the side section, and provides support for the well deck 01 so that the well deck 01 is kept in a fixed position. reference Figure 1 , A fixed support for a side top segment of an LNG ship includes a tire frame 1 arranged on a foundation surface, the tire frame 1 is composed of a plurality of steel columns arranged in an array, and is used to bear load and pressure during the assembly process of a well deck 01 and an outer oblique side plate 02. A column support tooling 2 is arranged on one side of the tire frame 1, and each group of column support tooling 2 has a main support surface, which is in contact with the outer surface of the well deck 01 to provide main support for the well deck 01.

[0039] The general structure of the well deck 01 and the outer oblique side plate 02 is as follows Figure 1 As shown, the well deck 01 is arranged on one side of the outer oblique side plate 02 and the upper end of the well deck 01 is inclined toward the side away from the outer oblique side plate 02. The above-mentioned column support tooling 2 provides bottom support for the inclined side of the well deck 01, and the connecting plate group 4 provides bottom support for the connection between the well deck 01 and the outer oblique side plate 02. The well deck 01 and the outer oblique side plate 02 have two connection points distributed upper and lower.

[0040] Furthermore, two sets of column support fixtures 2 are provided and are located on the same side of the tire frame 1. The two sets of column support fixtures 2 are 1.5m away from the edge of the tire frame 1 (mainstream 174,000m 3The structure size of LNG ships is similar. The distance of 1.5m from the tire frame can make the support point of the column support fixture 2 on the well deck 01 be at 2 / 3 of the height of the well deck 01, which meets the safety management requirements). Furthermore, the spacing between the two groups of column support fixtures 2 is 11m (the spacing of 11m can make part of the gravity of the well deck 01 evenly distributed to the two groups of column support fixtures 2). It should be noted that the above-mentioned spacing of 1.5m between the column support fixture 2 and the tire frame 1, and the spacing of 11m between the two groups of column support fixtures 2 are both preferred embodiments of the present invention. In actual working process, the spacing between the column support fixture 2 and the tire frame 1, and the spacing between the two groups of column support fixtures 2 need to be determined according to the height of the tire frame 1 and the size of the LNG ship.

[0041] Reference Figure 1 and Figure 2 Each set of column support tooling 2 includes two support columns 21, two vertical support members 22 and an inclined support member 23. The two support columns 21 are vertically arranged, the two vertical support members 22 are respectively welded to the top ends of the two support columns 21 and continue to extend upward, and the inclined support member 23 is fixed to the top ends of the vertical support members 22 (specifically, the extension direction of the inclined support member 23 is perpendicular to the extension direction of the vertical support member 22, and the two ends of the inclined support member 23 are respectively welded to the top ends of the two vertical support members 22).

[0042] Specifically, the support column 21 and the vertical support member 22 are connected in the following manner: a welding plate is provided at the contacting end of the support column 21 and the vertical support member 22, and the connection and fixation of the support column 21 and the vertical support member 22 can be achieved by fully welding the two welding plates. In addition, a rib plate is provided between the welding plate and the support column 21, and between the welding plate and the vertical support member 22, so as to improve the structural strength of the support column 21 and the vertical support member 22, thereby enhancing the overall stability of the column support tooling 2.

[0043] Furthermore, the foundation surface is provided with embedded iron 3 corresponding to the lower part of the support column 21, and the support column 21 and the embedded iron 3 are fully welded around to fix the support column 21 on the foundation surface. The vertical support member 22 preferably adopts two 1.1m 30# standard channel steels, and the notches of the two channel steels are opposite to each other and fully welded to form a heightened double-bound channel steel; the inclined support member 23 preferably adopts two 2.6m 30# standard channel steels, and the notches are opposite to each other and fully welded to form an inclined double-bound channel steel. The vertical support member 22 and the inclined support member 23 can also be supported by other rigid components. It can be understood that when the outer oblique side plate 02 is used as the horizontal base surface to connect with the well deck 01, the outer surface of the well deck 01 forms a certain angle with the foundation surface, so the angle of the main support surface should be equal to the inclination angle of the outer surface of the well deck 01. The main support surface is specifically the side of the inclined support member 23 that contacts the well deck 01.

[0044] Furthermore, when the inclined support member 23 adopts the above-mentioned inclined structure matched with the well deck 01, the top end of the vertical support member 22 is beveled to be parallel to the main support surface to facilitate the welding of the inclined support member 23. Figure 1 In order to improve the supporting effect on the well deck 01 and share the pressure of the well deck 01 on the column support fixture 2, a connecting plate group 4 is arranged on the tire frame 1, one end of the connecting plate group 4 is connected to the column support fixture 2, and the other end extends to the inside of the tire frame 1. The connecting plate group 4 has a secondary supporting surface in contact with the outer surface of the outer oblique side plate 02, and the connection point between the well deck 01 and the outer oblique side plate 02 at the bottom is placed on the secondary supporting surface. At the same time, the secondary supporting surface is in contact with part of the lower surface of the well deck 01 and the outer oblique side plate 02. Part of the well deck 01 and part of the outer oblique side plate 02 are placed on the secondary supporting surface, which is used to disperse the gravity of the well deck 01 to improve the stability and service life of the fixed support as a whole.

[0045] According to the domestic mainstream size of 174,000 m 3 The structural characteristics of the LNG carrier are that the outer edge of the well deck 01 is 180 mm away from the end of the tire frame 1.

[0046] Specifically, the connecting plate group 4 includes three transverse tire frame connecting plates 41, the transverse tire frame connecting plate 41 closest to the column support fixture 2 is welded to the two supporting columns 21 of the column support fixture 2, and the other end is welded to the tire frame 1, and the remaining two transverse tire frame connecting plates 41 are welded to the tire frame 1. The upper surfaces of the three transverse tire frame connecting plates 41 together constitute the secondary support surface of the connecting plate group 4.

[0047] The embodiment of the present invention further provides a method for fixing a side top segment of an LNG ship, using the above-mentioned fixing support of the side top segment of the LNG ship, and specifically comprising the following steps:

[0048] S1: Make a tire frame 1 that intersects vertically and horizontally on the foundation surface;

[0049] S2: pre-embedded iron 3 is arranged on the foundation surface, and the pre-embedded iron is located on one side of the tire frame 1;

[0050] S3: Fully weld and fix two sets of column support fixtures 2 on the embedded iron 3. The two sets of column support fixtures 2 are located on the same straight line and the distance between them and the tire frame 1 is 1.5m. The distance between the two sets of column support fixtures 2 is 11m.

[0051] S4: Three transverse tire frame connecting plates 41 are arranged below the horizontal plane of the tire frame 1, one end of which is connected to the surface of the column support fixture 2, and the other end extends into the tire frame 1. The connection points between the transverse tire frame connecting plates 41 and the column support fixture 2 and the tire frame 1 are fully welded and fixed;

[0052] S5: hoist the outer oblique side plate 02 of the gunwale segment onto the tire frame 1;

[0053] S6: hoist the well deck 01 to the side of the outer oblique side plate 02 close to the column support fixture 2, so that the well deck 01 rests on the main support surfaces of the two groups of column support fixtures 2, and adjust the position of the well deck 01 at the same time, so that the well deck 01 is connected to the preset connection point of the outer oblique side plate 02;

[0054] S7. Temporarily fix the connection between the enclosure deck 01 and the outer oblique side plate 02 using a horse plate or a hand chain hoist 5.

[0055] The manufacturing steps of the column support tooling 2 in the above step S3 are specifically as follows:

[0056] S3a: Perform tooling modification on the two round piers, and set four connecting plates on the top and bottom of the round piers to form supporting columns 21;

[0057] S3b: Align the notches of two 1.1m 30# standard channel steels with each other and fully weld them to form a vertical support member 22, and weld one end of the vertical support member 22 to the support column 21;

[0058] S3c: bevel the top of the vertical support member 22 to a certain angle;

[0059] S3d: Align the notches of two 2.6m 30# standard channel steels with each other and fully weld them to form an inclined support member 23, and then weld both ends of the inclined support member 23 to the top of the vertical support member 22.

[0060] The preset connection point between the enclosure deck 01 and the outer oblique side plate 02 described in the above step S7 is specifically the upper connection point of the two upper and lower connection points of the enclosure deck 01 and the outer oblique side plate 02.

[0061] It should be clear that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A fixed support for a side section of an LNG ship, wherein the side section comprises a well deck and an outer oblique side plate, and the fixed support is used to provide support for the well deck and the outer oblique side plate when the side section is manufactured, and is characterized in that: The fixed support includes a tire frame, a connecting plate group and a column support tooling, the tire frame is fixed on the foundation surface, the column support tooling is arranged on the same side of the tire frame and is distributed at intervals, the connecting plate group is fixed on the tire frame and one end of it is connected to the column support tooling, and the other end extends into the tire frame, the column support tooling has a main support surface in contact with the outer surface of the well deck, and the connecting plate group has a secondary support surface in contact with the outer surface of the outer oblique side plate.

2. The fixed support of the side top segment of an LNG ship according to claim 1, characterized in that: The connecting plate group includes at least three transverse tire frame connecting plates connected end to end, each of the transverse tire frame connecting plates is welded to the tire frame, the lower surface of the outer oblique side plate is in contact with the transverse tire frame connecting plate, and the secondary supporting surface is the contact surface between the transverse tire frame connecting plate and the outer oblique side plate.

3. The fixed support of the side top segment of an LNG ship according to claim 2, characterized in that: The column support tooling includes two supporting columns, two vertical support members and an inclined support member. The two vertical support members are respectively fixed on the two supporting columns. The two ends of the inclined support member are respectively connected to the two vertical support members. The main support surface is the side of the inclined support member facing away from the vertical support member.

4. The fixed support of the side top segment of an LNG ship according to claim 3, characterized in that: Embedded iron is arranged on the foundation surface, and the supporting column is welded and fixed on the embedded iron.

5. The fixed support of the side top segment of an LNG ship according to claim 1, characterized in that: The distance between one end of the tire frame close to the supporting column and the lower edge of the well deck is 180 mm.

6. A method for fixing a side top segment of an LNG ship, using the fixing support of the side top segment of an LNG ship as claimed in claim 4, characterized in that: The following steps are involved: S1: Make a tire frame that intersects vertically and horizontally on the foundation surface; S2: pre-embedded iron is arranged on the foundation surface, and the pre-embedded iron is located on one side of the tire frame; S3: Fully weld and fix two sets of column support fixtures on the embedded iron, and the two sets of column support fixtures are located on the same straight line and have the same distance from the tire frame; S4: Three transverse tire frame connecting plates are arranged below the horizontal plane of the tire frame, one end of which is connected to the surface of the column support fixture and the other end extends into the tire frame. The connection points between the transverse tire frame connecting plates and the column support fixture and the tire frame are fully welded and fixed; S5: hoist the outer oblique side plate of the gunwale segment onto the tire frame; S6: hoist the well deck to the side of the outer oblique side plate close to the column support fixture, so that the well deck rests on the main support surfaces of the two sets of column support fixtures, and at the same time adjust the position of the well deck so that the well deck is connected to the preset connection point of the outer oblique side plate; S7. Temporarily fix the joint between the well deck and the outer inclined side plate using a horse board or a hand winch.

7. A method for fixing a side top segment of an LNG ship according to claim 6, wherein the steps of making the column support tooling in step S3 are: S3a: The two round piers are refitted and four connecting plates are set at the top and bottom of the round piers to form supporting columns; S3b: The notches of two standard channel steels are butted together to form a vertical support member, and one end of the vertical support member is welded and fixed to the supporting column; S3c: beveling the top end of the vertical support member into an inclined surface; S3d: The notches of two standard channel steels are butted together to form an inclined support member, and the two ends of the inclined support member are welded and mounted on the inclined surface of the top end of the vertical support member.

8. The method for fixing the side top segment of an LNG ship according to claim 6, characterized in that: In step S3, the distance between the two groups of column support fixtures and the tire frame is 1.5m, and the distance between the two groups of column support fixtures is 11m.

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