Transportation method of large portal steel structure

Abstract

This application relates to the technical field of shipbuilding, and in particular to a transportation method for a large gantry steel structure, which is applied to the gantry steel structure. The method includes the following steps: installing a jacking device below the bracket and moving the whole into the interior of the gantry steel structure; installing connectors on both sides of the bracket respectively, and making part of the structure of the connectors extend below the corresponding side of the gantry steel structure; using the jacking device to jack up the bracket and the gantry steel structure connected to the bracket, and then moving the whole to the target installation surface; using the jacking device to lower the bracket and the gantry steel structure onto the target installation surface; disassembling the connectors from the bracket, and finally moving the whole of the bracket, the jacking device and the connectors out of the interior of the gantry steel structure. This method can quickly respond to the urgent need for on-site indoor production operation areas, greatly saving the disassembly and installation cycle of the gantry steel structure, and at the same time reducing the input of manpower.

Description

Technical Field

[0001] This application relates to the technical field of shipbuilding, and in particular to a method for transporting a large gantry steel structure. Background Art

[0002] Currently, during the construction of civil, marine, and cruise ship production projects (wherein, the civil, marine, and cruise ship production projects specifically refer to the production projects of civilian ships, offshore engineering, and cruise ships), sub-assembly and total-assembly pre-fitting operations need to be carried out indoors. In order to further save materials, the method currently adopted is as follows: First, a large gantry steel structure, that is, a large wind and rain shed structure, is built and used in accordance with the fitting sequence. After the construction here is completed, the large gantry steel structure is demolished, moved to another fitting area, and built again. This method is extremely time-consuming, resulting in a long construction period and affecting the construction of the ship. In addition, this method also wastes a large amount of manpower. Summary of the Invention

[0003] The purpose of this application is to provide a method for transporting a large gantry steel structure, which to a certain extent solves the technical problem in the prior art that during the construction of civilian ships, offshore engineering, cruise ships, etc., it is necessary to repeatedly demolish and build large gantry steel structures, wasting time and manpower.

[0004] This application provides a method for transporting a large gantry steel structure, which is applied to a gantry steel structure. The gantry steel structure forms an accommodation space and a through opening communicating with the accommodation space, and the bottom of the gantry steel structure is hollow along its height direction. The method for transporting the large gantry steel structure includes the following steps:

[0005] Install a jacking device below the bracket, and move the installed whole into the interior of the gantry steel structure;

[0006] Install connectors on both sides of the bracket, and along the height direction of the gantry steel structure, extend a part of the structure of the connector to the lower part of the corresponding side of the gantry steel structure;

[0007] Use the jacking device to jack up the bracket and the gantry steel structure connected to the bracket, and then move the whole to the target installation surface;

[0008] Use the jacking device to lower the bracket and the gantry steel structure connected to the bracket onto the target installation surface;

[0009] Detach the connector from the bracket, and finally move the whole of the bracket and the jacking device out of the interior of the gantry steel structure.

[0010] In the above technical solution, further, after installing the jacking device below the bracket, lower the height of the jacking end of the jacking device to the lowest, and then move the whole into the interior of the portal steel structure.

[0011] In any of the above technical solutions, further, the connecting piece is connected to the bracket by welding, and after the bracket and the portal steel structure connected to the bracket are lowered to the target installation surface by using the jacking device, cut off the weld between the connecting piece and the portal steel structure.

[0012] In any of the above technical solutions, further, a plurality of the connecting pieces are installed on both opposite side portions of the bracket, and the plurality of connecting pieces on each side are arranged in sequence along the length direction of the corresponding side portion of the portal steel structure.

[0013] In any of the above technical solutions, further, the bracket includes a support frame, and support plates are provided on at least two sides of the support frame along its height direction.

[0014] In any of the above technical solutions, further, the support frame is a lattice support frame.

[0015] In any of the above technical solutions, further, the bracket has a square structure, and the number of the jacking devices is multiple and are evenly distributed below the square bracket.

[0016] In any of the above technical solutions, further, the connecting piece is an L-shaped steel I-beam.

[0017] In any of the above technical solutions, further, the jacking device is a device with jacking and moving functions.

[0018] In any of the above technical solutions, further, the bracket is a ship assembly bracket.

[0019] Compared with the prior art, the beneficial effects of this application are as follows:

[0020] The transportation method of the large portal steel structure provided by this application can lift the large portal steel structure and move it to the target installation surface by using the bracket, the jacking device and the connecting piece. The operation is simple and convenient. This method can quickly respond to the urgent need in the on-site indoor production operation area, greatly saving the disassembly and installation cycle of the portal steel structure, and at the same time reducing the labor input, which is of great significance in actual production.

[0021] In addition, the disassembled brackets and connecting pieces can be reused, greatly saving the material input.

[0022] In addition, since the bracket is an idle general assembly bracket for ships, there is no need to build it separately, which saves time and effort, and also saves material input, helping to reduce costs. Description of the Drawings

[0023] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Assembly drawing of the gantry steel structure, bracket, connecting piece and jacking device provided by the embodiment of the present application;

[0025] Figure 2 For Figure 1 Enlarged structural schematic diagram at A;

[0026] Figure 3 Another assembly drawing of the gantry steel structure, bracket, connecting piece and jacking device provided by the embodiment of the present application.

[0027] Reference Signs:

[0028] 1 - Gantry steel structure, 11 - Steel frame, 12 - Baffle, 13 - Left side, 14 - Right side, 2 - Bracket, 21 - Support frame, 22 - Support plate, 3 - Connecting piece, 31 - Vertically extending part, 32 - Horizontally extending part, 4 - Jacking device. Specific Embodiments

[0029] The following will clearly and completely describe the technical solutions of the present application with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present application.

[0030] Generally, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application.

[0031] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0032] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0034] The following refers to Figures 1 to 3 Describe the transportation method of a large gantry steel structure according to some embodiments of the present application.

[0035] See Figures 1 to 3 As shown, the embodiments of the present application provide a transportation method for a large gantry steel structure, which is applied to the gantry steel structure 1. The gantry steel structure 1 forms an accommodation space and a through opening communicating with the accommodation space. In this embodiment, the gantry steel structure 1 includes two side portions, namely the left side portion 13 and the right side portion 14, and a top. The left side portion 13 and the right side portion 14 are spaced apart and connected by the top. In addition, the front side portion and the rear side portion of the gantry steel structure 1 are missing, that is, it is an open type. And preferably, the foregoing left side portion 13, right side portion 14, and top all include a steel frame 11 and a baffle 12 arranged outside the steel frame 11;

[0036] The bottom of the gantry steel structure 1 is hollow along its height direction, that is, the bottom of the gantry steel structure 1 along its height direction is missing. Because generally, the gantry steel structure 1 is installed on the ground, the gantry steel structure 1 does not need to be provided with a bottom; of course, the foregoing gantry steel structure 1 is only an example, and it may also have only one side portion and the bottom hollow, that is, missing, and the remaining side portions and the top are all retained.

[0037] The transportation method of the large gantry steel structure includes the following steps:

[0038] Install a jacking device 4 below the bracket 2 and move the installed whole into the interior of the gantry steel structure 1;

[0039] Install connecting members 3 on both sides of the bracket 2 respectively, and along the height direction of the gantry steel structure 1, make part of the structure of the connecting member 3 extend below the corresponding side of the gantry steel structure 1, and preferably, make part of the connecting member 3 abut against the lower surface of the corresponding side of the gantry steel structure 1;

[0040] Use the jacking device 4 to jack up the bracket 2 and the gantry steel structure 1 connected to the bracket 2, and then move the whole to the target installation surface;

[0041] Use the jacking device 4 to lower the bracket 2 and the gantry steel structure 1 connected to the bracket 2 onto the target installation surface;

[0042] Detach the connecting member 3 from the bracket 2 (note: since the other side of the connecting member 3 has no assembly relationship with the gantry steel structure 1 and it only serves to support the side of the gantry steel structure 1, when the connecting member 3 is separated from the bracket 2, it can be directly removed and taken away and stored properly), and finally move the whole bracket 2 and the jacking device 4 out of the interior of the gantry steel structure 1.

[0043] Based on the above description, it can be seen that the present application provides a transportation method for a large gantry steel structure. By using the bracket 2, the jacking device 4 and the connecting member 3, the large gantry steel structure 1 can be jacked up and moved to the target installation surface. The operation is simple and convenient. This method can quickly respond to the urgent need in the on-site indoor production operation area, greatly saving the disassembly and installation cycle of the gantry steel structure 1, and at the same time reducing the input of manpower, which has important significance in actual production.

[0044] In addition, the disassembled bracket 2 and connecting member 3 can be reused, greatly saving the input of materials.

[0045] In an embodiment of the present application, preferably, as Figure 1 and Figure 2 shown, after installing the jacking device 4 under the bracket 2, lower the height of the jacking end of the jacking device 4 to the lowest, and then move the whole into the interior of the gantry steel structure 1.

[0046] In this embodiment, lowering the height of the jacking end of the jacking device 4 to the lowest when moving into the interior of the gantry steel structure 1 has the following advantages: the height of the jacking end of the jacking device 4 is the lowest, that is, when initially assembled with the bracket 2, the height of the bracket 2 is the lowest. In this way, the length of the connecting member 3 connected to the bracket 2 is shorter, and the input materials are less, which helps to reduce costs. Moreover, the lower position of the bracket 2 is also more convenient for workers to install the connecting member 3.

[0047] In an embodiment of the present application, preferably, as Figure 1 and Figure 2As shown, the connecting member 3 and the bracket 2 are connected by welding. The overall structure after connection is firmer and more stable. Moreover, the welding process is relatively mature and easy to operate, which is more suitable for the connection between steel structure members.

[0048] On this basis, that is to say, on the basis that the connecting member 3 and the bracket 2 are connected by welding, after the bracket 2 and the portal steel structure 1 connected to the bracket 2 are lowered to the target installation surface by using the jacking device 4, the weld between the connecting member 3 and the portal steel structure 1 can be directly cut off. The operation is simple and convenient, and the recovered bracket 2 and connecting member 3 can still be used.

[0049] Of course, the connection method of the connecting member with the bracket 2 and the portal steel structure 1 is not limited to welding. It can also be connected by using a fastening member such as a combination structure of bolts and nuts, or by clamping, etc. Of course, this method belongs to a detachable connection structure. Although it is convenient for assembly and disassembly, the strength after connection is not as good as welding. Therefore, it needs to be reasonably selected according to the actual situation.

[0050] Further, preferably, as Figure 2 shown, the connecting member 3 is an L-shaped I-beam, which has the function of transfer and its strength meets the requirements. In addition, the L-shaped I-beam includes a vertically extending portion 31 and a horizontally extending portion 32 that are perpendicular to each other. Among them, the vertically extending portion 31 can achieve a large-area contact with the side of the bracket 2, that is, the welding area is larger and the welding is more firm; among them, the horizontally extending portion 32 extends to the lower part of the steel frame 11 on the side of the portal steel structure 1.

[0051] In an embodiment of the present application, preferably, as Figure 1 and Figure 3 shown, a plurality of connecting members 3 are installed on both opposite side portions of the bracket 2, that is, the left side portion 13 and the right side portion 14. Moreover, the plurality of connecting members 3 provided on the left side portion 13 are arranged in sequence along the length direction of the left side portion 13, and the plurality of connecting members 3 provided on the right side portion 14 are arranged in sequence along the length direction of the right side portion 14.

[0052] In this embodiment, a plurality of connecting members 3 are used to connect both sides of the bracket 2 and the corresponding sides of the portal steel structure 1, which can improve the firmness and stability of the overall structure.

[0053] In an embodiment of the present application, preferably, as Figure 1 and Figure 2 shown, the bracket 2 includes a support frame 21, and support plates 22 are provided on both sides of the support frame 21 along its height direction.

[0054] In this embodiment, the bracket 2 is composed of a support frame 21 and a support plate 22. While the overall structure meets the strength requirements, it helps with lightweight design and reduces the load-bearing capacity requirements for the jacking device 4.

[0055] In an embodiment of the present application, preferably, as Figure 3 shown, the support frame 21 is a lattice support frame. That is to say, the support frame is a structure composed of multiple cross beams and longitudinal beams, and the cross beams and longitudinal beams are arranged alternately to form a lattice-like structure. Such a structure can ensure a certain strength while being lighter as a whole.

[0056] Also note that in this embodiment, this bracket 2 is the general assembly bracket 2 of a ship in the prior art. That is to say, by using the idle general assembly bracket 2 of a ship (which is mainly used to support the block and sectional structure during the general assembly of the ship), L-shaped steel beams are welded and fixed on both sides thereof (in this embodiment, the overall dimensions of the gantry steel structure 1 are: length 43 m × width 43 m × height 16.7 m, and preferably, 18 L-shaped steel beams are arranged on the long side on one side, with a total of 36 on both sides, and the overall length dimension of a single L-shaped steel beam can be preferably 3 m. Of course, this is only an example. The dimensions and quantities of the L-shaped steel beams can be set according to different sizes of the gantry steel structure 1, and the overall dimensions of the above-mentioned gantry steel structure 1 are also only an example. The gantry steel structure 1 of other sizes can also be jacked up and moved), the front and back of the butt joint are welded and fixed, a movable jack is placed at the bottom of the bracket 2 to jack up the gantry steel structure 1, and the whole is transferred. After reaching the required site, the jacking end is lowered, the welds on both sides are cut off, the L-shaped steel beams and the bracket 2 (which can be reused) are removed, and then the bottom of the large gantry steel structure 1 is reinforced.

[0057] In an embodiment of the present application, preferably, as Figure 1 and Figure 2 shown, the jacking device 4 is a movable jack.

[0058] In this embodiment, the movable jack not only has the function of jacking up but also has the function of moving. Therefore, it is suitable for jacking up and transporting the gantry steel structure 1.

[0059] In addition, the power for transportation can be provided by a vehicle or other power structures. That is to say, the overall structure is fixed to the vehicle by ropes, and the whole is towed by the vehicle to move to the target installation surface.

[0060] Among them, preferably, in this embodiment, the overall weight of the portal steel structure 1, bracket 2 and connector 3 is about 454 tons, and the jacking capacity of the mobile jack is 1200T, which meets the jacking requirements. Of course, the above is just an example. For the overall structure of the portal steel structure 1, bracket 2 and connector 3 of different weights, the jacking capacity of the jacking device can be adapted.

[0061] Of course, the lifting device 4 is not limited to a mobile jack. It can be an ordinary jack. After lifting the portal steel structure 1, rollers can be installed under the bracket 2 to achieve overall movement, or the lifting device 4 can be other structures with lifting and moving functions.

[0062] In one embodiment of the present application, preferably, Figure 3 As shown, the bracket 2 is a square structure, and the number of the lifting devices 4 is multiple and evenly distributed below the square bracket 2.

[0063] In this embodiment, a plurality of evenly distributed jacking devices 4 can be used to jack up the entire portal-type steel structure 1 quickly and smoothly, thereby preventing the portal-type steel structure 1 from tipping over, which is safer and more reliable.

[0064] Furthermore, preferably, the number of the lifting devices 4 is four, and the four are evenly distributed below the square structure. Of course, the number of the lifting devices 4 is not limited to this, and can also be selected according to actual needs, such as five, six, seven, eight, etc.

[0065] In summary, the transportation method of large portal steel structures provided by this application has the following advantages:

[0066] An idle ship assembly bracket 2 is used to weld and fix L-shaped I-beams on both sides of it, and the front and back sides of the butt joints are welded and fixed. A movable jack is placed at the bottom of the bracket 2 to lift the portal steel structure 1 and transfer it as a whole. After arriving at the required site, the lifting end is lowered, the butt joints on both sides are cut off, the bracket 2 and the L-shaped I-beam are removed, and then the bottom of the large portal steel structure 1 is reinforced.

[0067] It can be seen that when indoor production space is in short supply in the factory, the invention of this transportation method can quickly respond to the urgent need for use of the on-site indoor production operation area, greatly saving the disassembly and installation cycle of the portal steel structure 1, while reducing manpower input. In addition, the disassembled bracket 2 and L-shaped I-beam can be reused, which greatly saves material input.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A transportation method for a large gantry steel structure, which is applied to the gantry steel structure. The gantry steel structure forms an accommodation space and a through opening connected to the accommodation space, and the bottom of the gantry steel structure is hollow along its height direction. It is characterized in that, The transportation method of the large gantry steel structure includes the following steps: Install a jacking device below the bracket, and move the whole installed unit into the interior of the gantry steel structure; Install connecting pieces on both sides of the bracket respectively, and along the height direction of the gantry steel structure, make part of the structure of the connecting piece extend to the lower part of the corresponding side of the gantry steel structure; Use the jacking device to jack up the bracket and the gantry steel structure connected to the bracket, and then move the whole to the target installation surface; Use the jacking device to lower the bracket and the gantry steel structure connected to the bracket onto the target installation surface; Detach the connecting piece from the bracket, and finally move the whole of the bracket and the jacking device out of the interior of the gantry steel structure; After installing the jacking device below the bracket, lower the height of the jacking end of the jacking device to the lowest, and then move the whole into the interior of the gantry steel structure; The connecting piece is connected to the bracket by welding, and after using the jacking device to lower the bracket and the gantry steel structure connected to the bracket onto the target installation surface, cut off the weld between the connecting piece and the gantry steel structure.

2. The transportation method of the large gantry steel structure according to claim 1, characterized in that, A plurality of the connecting pieces are installed on the opposite side parts of the bracket, and the plurality of the connecting pieces on each side are arranged in sequence along the length direction of the corresponding side of the gantry steel structure.

3. The transportation method of the large gantry steel structure according to claim 1, characterized in that, The bracket includes a support frame, and support plates are arranged on at least both sides of the support frame along its height direction.

4. The transportation method of the large gantry steel structure according to claim 3, characterized in that The support frame is a lattice support frame.

5. The transportation method of the large gantry steel structure according to claim 1, characterized in that, The bracket is of a square structure, and the number of the jacking devices is multiple and evenly distributed below the square bracket.

6. The transportation method of the large gantry steel structure according to claim 1, characterized in that The connecting piece is an L-shaped I-beam.

7. The transportation method of the large gantry steel structure according to claim 1, characterized in that, The jacking device is a device with jacking and moving functions.

8. The transportation method of the large gantry steel structure according to any one of claims 1 to 7, characterized in that, The bracket is a ship assembly bracket.

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