A grid positioning tool and a grid mounting method

Abstract

This invention relates to the field of shipbuilding technology and discloses a grid positioning fixture and installation method. The grid positioning fixture includes a support frame with a sliding groove extending along a first direction; multiple sets of limiting blocks spaced apart along the first direction within the sliding groove; each limiting block set includes a first limiting block and a second limiting block, the positions of which are adjustable within the sliding groove; the space between the first and second limiting blocks within the same limiting block set forms a limiting groove for placing the grid; and a first fixing member detachably connected to the support frame for fixing the support frame. This invention enables single-person positioning welding of process hole grids at all locations in three-dimensional space and allows for one-time positioning and installation of all grids in the same process hole, effectively improving the efficiency, quality, and safety of the positioning welding process hole grids.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to a grid positioning fixture and a grid installation method. Background Technology

[0002] On non-watertight platform panels within the hull structure, there are typically varying numbers of process openings. These openings require the installation of gratings at different stages of shipbuilding to ensure the safety of personnel entering the compartments. Due to differences in ship section construction methods, the spatial positions of the platform panel and the gratings differ when these process openings are installed. When the ship section is constructed upright, the gratings are all above the platform panel (i.e., horizontal position); when the ship section is constructed upside down, the gratings are in the upward-looking position of the platform panel (i.e., ceiling position); when the ship section is constructed on its side, both the gratings and the platform panel are in a vertical position (i.e., vertical position).

[0003] Currently, the following method is generally used for positioning and installing gratings: According to the drawings, one end line and one edge line of all gratings are pre-drawn on the platform. Then, two people work together to position and install the gratings. One person holds a grating and places it according to the drawn line, pressing it firmly, while the other person welds it in place. This method is used to install all gratings one by one. However, this method has the following drawbacks: multiple gratings in the same process hole need to be pressed and welded one by one; the number of grating edge lines to be drawn is large, requiring lines to be drawn for each grating, resulting in low construction efficiency; due to the weight of the gratings, pressing gratings in vertical and upward positions is more difficult, and gratings are prone to displacement during the locating welding process, leading to uneven spacing between multiple gratings in the same process hole, and even causing excessive errors in the grating installation position that do not meet design requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a grid positioning fixture and grid installation method, which can position all grids of the same process hole at one time and avoid grid displacement during the positioning welding process, thereby effectively improving the construction efficiency and construction quality of the process hole grids.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] One aspect of the present invention is to provide a grid positioning fixture, with a set first direction as a reference direction, comprising:

[0007] The support frame is provided with a sliding groove whose length extends along a first direction;

[0008] The limiting block group is provided in multiple groups, and the multiple groups of limiting block groups are spaced apart in the sliding groove along the first direction; the limiting block group includes a first limiting block and a second limiting block, and the positions of the first limiting block and the second limiting block in the sliding groove can be adjusted. The space between the first limiting block and the second limiting block in the same limiting block group forms a limiting groove for placing the grille.

[0009] The first fastener is detachably connected to the support frame and is used to fix the support frame.

[0010] Preferably, a second direction is used as a reference direction, which intersects with the first direction. The support frame is provided with a limiting plate at one end in the second direction. The limiting plate protrudes from the support frame and extends along the first direction to abut against each of the grilles.

[0011] Preferably, a second direction is used as a reference direction, the second direction intersects with the first direction, and at least two sliding grooves are provided, with the at least two sliding grooves spaced apart along the second direction; each sliding groove is provided with the limiting block group.

[0012] Preferably, a plurality of sliding grooves are formed on the bottom plate of the sliding groove, and the plurality of sliding grooves are spaced apart along the first direction. A first fastener and a second fastener are installed in each sliding groove. The first fastener is connected to the first limiting block in the same limiting block group, and the second fastener is connected to the second limiting block in the same limiting block group.

[0013] Preferably, it further includes a second fastener, which is detachably connected to the support frame, and the second fastener has a second adsorption surface for adsorbing the grille.

[0014] Preferably, the second adsorption surface of the second fastener is flush with the lower surface of the support frame.

[0015] Preferably, the first fixing member and / or the second fixing member are magnetic members, and the side of the magnetic member is provided with a magnetic switch for controlling the magnetism.

[0016] Preferably, the first fastener has a first adsorption surface for adsorbing the ship platform plate, and the first adsorption surface is flush with the lower surface of each of the grilles.

[0017] Another aspect of the present invention is to provide a grid installation method using the grid positioning fixture described above, comprising:

[0018] Step S1: Place a grid in the limiting groove of the limiting block group that is at or near the middle position along the first direction, and adjust the position of the limiting groove so that the grid is at the middle position of the sliding groove corresponding to the limiting block group.

[0019] Step S2: Place the grids one by one in the limiting grooves of each limiting block group, and adjust the spacing between adjacent limiting grooves.

[0020] Step S3: Draw the grid end line and grid edge line of one of the grids at the process hole position of the ship platform plate;

[0021] Step S4: Move the grid positioning fixture pre-installed with the grid to the process hole position, so that the drawn grid end line is aligned with the end of the corresponding grid and the drawn grid edge line is aligned with the edge of the corresponding grid.

[0022] Step S5: Fix the support frame to the ship platform plate using the first fastener;

[0023] Step S6: Weld and fix each grid fixed in the grid positioning fixture to the ship platform plate.

[0024] Preferably, after step S2 and before step S4, the method further includes: moving each grille along a second direction so that the end of each grille abuts against a limiting plate; and / or, adsorbing each grille by a second fixing member.

[0025] Compared with the prior art, the grid positioning fixture and grid installation method of this invention have the following advantages:

[0026] The grid positioning fixture of this invention includes a support frame, a set of limiting blocks, and a first fixing member. A sliding groove is provided on the support frame, and multiple sets of limiting blocks are spaced apart within the sliding groove. The space between the first and second limiting blocks in each set of limiting blocks forms a limiting groove for placing the grid. Each grid is placed in the limiting groove of its respective limiting block set. By adjusting the positions of the first and second limiting blocks within the sliding groove, the position of the limiting groove can be adjusted, thereby adjusting the position of each grid and the spacing between adjacent grids. This ensures that the spacing between multiple grids corresponding to the same process hole is uniform, meeting design requirements. The first fixing member secures the support frame containing the grids to the process hole position on the ship platform plate. Because the limiting grooves formed by the first and second limiting blocks limit the grids, the relative positions of each grid and the relative positions of each grid to the support frame are fixed. When fixing the support frame to the ship platform plate using the first fixing member, only one end line and edge line of the grid need to be drawn to position one grid to complete the positioning of all grids, thus completing the one-time positioning of all grids corresponding to the process hole and improving construction efficiency. Furthermore, by fixing the support frame to the ship platform plate with the first fastener, the grating is relatively fixed to the ship platform plate. During the positioning welding process, there is no need to manually press the grating, thereby avoiding the problem of displacement of the grating during the positioning welding process. This ensures that the spacing between multiple gratings corresponding to the same process hole remains uniform, avoids excessive errors in the installation position of the grating, and improves the construction quality. It also avoids the problem that the grating is difficult to press due to its own weight in the vertical and upward positions. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the grid positioning fixture described in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the support frame structure in an embodiment of the present invention;

[0029] Figure 3 yes Figure 1 A magnified view of part A in the middle;

[0030] Figure 4 yes Figure 1 BB-direction sectional view in the middle;

[0031] Figure 5 This is a schematic diagram of the structure of the first limiting block in an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of a grille placed inside a limiting groove in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the grid positioning fixture placing the grid in an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of lines drawn on the ship platform plate in an embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of the grille positioning welding position in an embodiment of the present invention;

[0036] Figure 10 This is a schematic diagram showing the location of the fillet weld of the grille in an embodiment of the present invention.

[0037] Numbering on the map:

[0038] 10. Support frame; 101. First frame structure; 102. Second frame structure; 103. Third frame structure; 1031. First mounting frame; 1032. Second mounting frame; 1033. Fixing screw; 11. Sliding groove; 111. Groove bottom plate; 1111. Sliding groove; 112. First fastener; 113. Second fastener;

[0039] 20. Limiting block assembly; 21. First limiting block; 211. Fixing part; 2111. Bolt hole; 212. Limiting part; 2121. Fitting side; 2122. Transition slope; 22. Second limiting block; 23. Limiting groove;

[0040] 30. First fixing component; 31. Magnetic switch;

[0041] 40. Second fastener;

[0042] 50. Limit plate;

[0043] 60. Grating; 601. Tack weld location; 602. First corner weld location; 603. Second corner weld location;

[0044] 70. Ship platform plate; 701. Grating end line; 702. Grating edge line;

[0045] 80. Process holes;

[0046] X, the first direction; Y, the second direction. Detailed Implementation

[0047] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0050] See Figures 1-7 This invention provides a grid positioning fixture, with a set first direction X as the reference direction, including a support frame 10, a limiting block group 20 and a first fixing member 30. The support frame 10 is provided with a sliding groove 11 whose groove length extends along the first direction X, and the groove opening of the sliding groove 11 is set downward. The limiting block group 20 is provided in multiple sets, and the multiple sets of limiting block groups 20 are spaced apart in the sliding groove 11 along the first direction X. The structure of each limiting block group 20 is the same. The limiting block group 20 includes a first limiting block 21 and a second limiting block 22. The positions of the first limiting block 21 and the second limiting block 22 within the sliding groove 11 are adjustable. The space between the first limiting block 21 and the second limiting block 22 within the same limiting block group 20 forms a limiting groove 23 for placing the grille 60. The limiting groove 23 limits the grille 60, thus fixing the relative position of the grille 60 and the support frame 10. The first fixing member 30 is detachably connected to the support frame 10. The first fixing member 30 is used to fix the support frame 10 and fix the support frame 10 to the ship platform plate 70 on which the grille 60 is to be installed.

[0051] Each grid 60 is placed in the limiting groove 23 of each limiting block group 20. By adjusting the positions of the first limiting block 21 and the second limiting block 22 in the sliding groove 11, the position of the limiting groove 23 can be adjusted, thereby adjusting the position of each grid 60 and the spacing between adjacent grids 60, so that the spacing between multiple grids 60 corresponding to the same process hole 80 is uniform and meets the design requirements. The support frame 10 with the grids 60 can be fixed at the process hole 80 position of the ship platform plate 70 by the first fixing member 30. Since the limiting groove 23 formed by the first limiting block 21 and the second limiting block 22 limits the grids 60, the relative positions of each grid 60 and the relative positions of each grid 60 and the support frame 10 are fixed. When fixing the support frame 10 to the ship platform plate 70 by the first fixing member 30, it is only necessary to draw one end line and one edge line of the grid 60 and locate the position of one grid 60 to complete the positioning of all grids 60, thereby completing the one-time positioning of each grid 60 corresponding to the process hole 80 and improving construction efficiency. Furthermore, by fixing the support frame 10 to the ship platform plate 70 through the first fastener 30, the grating 60 is relatively fixed to the ship platform plate 70. During the positioning welding process, there is no need to manually press the grating 60, thereby avoiding the problem of displacement of the grating 60 during the positioning welding process. This ensures that the spacing between multiple gratings 60 corresponding to the same process hole 80 remains uniform, avoiding excessive errors in the installation position of the grating 60 and improving the construction quality. It also avoids the problem that the grating 60 is difficult to press in the vertical position and the upward position due to its own weight.

[0052] Using a predetermined second direction Y as a reference direction, the second direction Y intersects with the first direction X. In some embodiments, the second direction Y is substantially perpendicular to the first direction X. An angle between the second direction Y and the first direction X within the range of 89° to 91° can be considered as a substantially perpendicular relationship.

[0053] See Figure 1 and Figure 2 In some embodiments, a limiting plate 50 is provided at one end of the support frame 10 in the second direction Y. The limiting plate 50 protrudes from the support frame 10 and extends along the first direction X to abut against each grille 60, making the ends of each grille 60 flush. This facilitates drawing the end lines of the grilles 60 on the ship platform plate 70 and aligning the ends of each grille 60 according to the end lines, reducing installation errors of the grilles 60. The length direction of the limiting plate 50 extends along the first direction X. By providing the limiting plate 50 only at one end of the support frame 10 and not providing the limiting plate 50 at the other end, it is possible to prevent the grilles 60 from being difficult to fit into the limiting groove 23 of the grille positioning fixture due to length errors. In some embodiments, the limiting plate 50 is arranged perpendicular to the support frame 10, so that the ends of the grilles 60 are in surface contact with the limiting plate 50, improving the accuracy of limiting the ends of the grilles 60.

[0054] See Figure 1 and Figure 2 In some embodiments, the sliding groove 11 extends through the support frame 10 along the first direction X, facilitating the installation of the limiting block assembly 20 and providing a track for the sliding of the limiting block assembly 20. At least two sliding grooves 11 are provided, spaced apart along the second direction Y, with the groove lengths of the sliding grooves 11 parallel. Each sliding groove 11 contains a limiting block assembly 20, ensuring that each grille 60 has two or more limiting block assemblies 20 for multi-point limiting, preventing warping and deformation of the grille 60 during the tack welding process. The arrangement of the limiting block assemblies 20 within each sliding groove 11 is identical.

[0055] See Figures 1-3 In some embodiments, a plurality of sliding grooves 1111 are formed on the bottom plate 111 of the sliding groove 11, and the sliding grooves 1111 penetrate the bottom plate 111 along the thickness direction of the bottom plate 111. The plurality of sliding grooves 1111 are spaced apart along the first direction X, and each sliding groove 1111 corresponds to a limiting block group 20. (See reference...) Figures 3-6 Each slide groove 1111 contains a first fastener 112 and a second fastener 113. The first fastener 112 connects to the first limiting block 21 within the same limiting block group 20, and the second fastener 113 connects to the second limiting block 22 within the same limiting block group 20. The first limiting block 21 is fixed to the support frame 10 by the first fastener 112, and the second limiting block 22 is fixed to the support frame 10 by the second fastener 113, thereby fixing the positions of the first limiting block 21 and the second limiting block 22. The slide groove 1111 provides a track for the sliding of the first fastener 112 and the second fastener 113, thereby facilitating the adjustment of the position of the limiting block group 20. In some embodiments, the first fastener 112 and the second fastener 113 are both fastening bolts, and bolt holes 2111 are provided on both the first limiting block 21 and the second limiting block 22. The fastening bolts pass through the corresponding bolt holes 2111 to connect to the first limiting block 21 or the second limiting block 22. The sliding groove 11 serves as the mounting carrier for the fastening bolt and also provides adjustment space for adjusting the position of the fastening bolt, thereby facilitating the adjustment of the position of the limiting groove 23 formed by the first limiting block 21 and the second limiting block 22.

[0056] See Figure 4 and Figure 5In some embodiments, the first limiting block 21 and the second limiting block 22 have the same structure. Taking the first limiting block 21 as an example, the first limiting block 21 includes a fixing part 211 and a limiting part 212. The fixing part 211 is slidably disposed within the sliding groove 11 and connected to the first fastener 112. The limiting part 212 is fixedly connected to the fixing part 211. The limiting part 212 has an engagement side 2121 for engaging the grille 60. The fixing part 211 is fixed to the side facing away from the engagement side 2121. The engagement side 2121 of the limiting part 212 of the first limiting block 21 and the engagement side 2121 of the limiting part 212 of the second limiting block 22 form the groove wall of the limiting groove 23. In some embodiments, a transition slope 2122 is also provided at the end of the limiting part 212 away from the fixing part 211, and the transition slope 2122 is connected to the engagement side 2121.

[0057] In some embodiments, the first fastener 30 has a first adsorption surface for adsorbing the ship platform plate 70, the first adsorption surface being flush with the lower surface of each grille 60. See also Figure 1 The first fixing member 30 is a magnetic component. A magnetic switch 31 for controlling the magnetism is provided on the side of the first fixing member 30. When the magnetic switch 31 is turned on, the first fixing member 30 becomes magnetic; when the magnetic switch 31 is turned off, the magnetism of the first fixing member 30 disappears. The first fixing member 30 can be a magnet block, with its lower surface flush with the lower surface of each grille 60, so that when the magnet block is attached to the ship platform plate 70, the grille 60 fits snugly against the ship platform plate 70. A first mounting frame 1031 for mounting the first fixing member 30 is provided on the support frame 10. Fixing screws 1033 are installed on the edge of the first mounting frame 1031 for fixing the first fixing member 30. In some embodiments, multiple first fixing members 30 are provided, distributed at both ends or around the perimeter of the support frame 10, improving the stability of fixing the support frame 10. The number of first fixing members 30 can be 2, 3, 4, etc.

[0058] See Figure 1In some embodiments, the grid positioning fixture further includes a second fixing member 40, which is detachably connected to the support frame 10. The second fixing member 40 has a second adsorption surface for adsorbing the grid 60. By adsorbing the grid 60 through the second adsorption surface, the grid 60 is fixed to the support frame 10, improving the positioning accuracy of the grid 60 and preventing grid 60 displacement. The second adsorption surface of the second fixing member 40 is flush with the lower surface of the support frame 10, so that the second adsorption surface fits against the surface of the grid 60, facilitating the adsorption of the grid 60. The lower surface of the support frame 10 is flush with the upper surface of each grid 60 and is on the same plane. The second fixing member 40 is a magnetic component, and a magnetic switch 31 for controlling the magnetism is provided on the side of the second fixing member 40. When the magnetic switch 31 is turned on, the second fixing member 40 becomes magnetic; when the magnetic switch 31 is turned off, the magnetism of the second fixing member 40 disappears. The second fixing member 40 is a magnet block, and the lower surface of the magnet block is flush with the lower surface of the support frame 10. See reference. Figure 2 The support frame 10 is provided with a second mounting frame 1032 for mounting the second fastener 40. Fixing screws 1033 are installed on the frame edge of the second mounting frame 1032, and the second fastener 40 is fixed in the second mounting frame 1032 by fixing screws 1033.

[0059] In some embodiments, in the second direction Y, multiple sliding grooves 11 are respectively disposed on both sides of the second fixing member 40. The second fixing member 40 is adsorbed onto the upper surface of the grille 60, and the two ends of the grille 60 are restricted by the limiting grooves 23 and fully contact the surface of the support frame 10. The grille 60 is pre-fixed by the magnetic second fixing member 40, and together with the bottom plane of the limiting grooves 23 of the limiting block group 20 on both sides, the grille 60 is firmly fixed with at least three contacts on the same plane, preventing the grille 60 from locally warping and deforming away from the platform plate during the positioning welding process.

[0060] See Figure 1 and Figure 2 In some embodiments, multiple second fixing members 40 are provided, and the multiple second fixing members 40 are spaced apart along the first direction X. The second fixing members 40 are corresponding one-to-one with the limiting block group 20. Each grille 60 has a corresponding second fixing member 40. The width of the second fixing member 40 is greater than the width of the grille 60, ensuring that grilles 60 of different specifications can be within the adsorption range of the second fixing member 40.

[0061] See Figure 2In some embodiments, the support frame 10 includes a first frame structure 101 and a second frame structure 102. At least two first frame structures 101 and at least two second frame structures 102 are provided. The at least two first frame structures 101 are spaced apart along a second direction Y. The second frame structures 102 connect the ends of each first frame structure 101, and a sliding groove 11 is provided on the first frame structure 101. The second frame structure 102 and the first frame structure 101 form a stable support frame 10. The first frame structure 101 and the second frame structure 102 are arranged perpendicularly. In some embodiments, the support frame 10 further includes a third frame structure 103. At least two first frame structures 101 are respectively disposed on both sides of the third frame structure 103. The two ends of the second frame structure 102 are respectively connected to the first frame structure 101 and the third frame structure 103, or the two ends of the second frame structure 102 are respectively connected to the two first frame structures 101. The third frame structure 103 serves as the load-bearing frame for the first fixing member 30 and the second fixing member 40. Both the first mounting frame 1031 and the second mounting frame 1032 are formed on the third frame structure 103. Both ends of the third frame structure 103 protrude from the second support frame 10 in the first direction X, and the first mounting frame 1031 is formed at the protruding portions at both ends of the third frame structure 103. The first fixing member 30 and the second fixing member 40 are collinearly arranged on the third frame structure 103, facilitating installation and placement. Furthermore, the first fixing member 30 is distributed at both ends of the third frame structure 103, improving the stability of the support frame 10. The support frame 10 is made of aluminum alloy, which is lightweight and has good structural strength.

[0062] In some embodiments, there are two first frame structures 101, which are symmetrically arranged with respect to the third frame structure 103. The first frame structures 101 and the second frame structure 102 form a quadrilateral support frame 10.

[0063] The present invention also provides a grid installation method using the above-mentioned grid positioning fixture, comprising:

[0064] Step S1: Place a grid 60 in the limiting groove 23 of the limiting block group 20 located at or near the middle position along the first direction X. Use this grid 60 as the installation reference for other grids 60 corresponding to the same process hole 80. This grid 60 is the grid 60 located at or near the middle position in the grid 60 combination corresponding to the same process hole 80. Adjust the position of the limiting groove 23 so that the grid 60 in the limiting groove 23 is located at the middle position of the slide groove 1111 corresponding to the limiting block group 20. This ensures that the grid 60 in the limiting groove 23 will not be biased towards the end of the slide groove 1111, so that the grids 60 adjacent to this grid 60 have a large position adjustment space, which facilitates the adjustment of the spacing between adjacent grids 60.

[0065] Step S2: Place the grilles 60 one by one in the limiting grooves 23 of each limiting block group 20, and adjust the spacing between adjacent limiting grooves 23 one by one, thereby adjusting the spacing between adjacent grilles 60 so that the spacing between adjacent grilles 60 meets the design requirements.

[0066] Step S3: Draw the grid end line 701 and grid edge line 702 of one of the grids 60 at the process hole 80 position on the ship platform plate 70, see reference. Figure 8 Preferably, the grid edge line 702 of the grid 60 located on the far side is drawn to facilitate the alignment of the grid 60 with the edge line;

[0067] Step S4, see Figure 9 The grid positioning fixture pre-installed with the grid 60 is moved to the process hole 80 position, so that the drawn grid end line 701 is aligned with the end of the corresponding grid 60, and the drawn grid edge line 702 is aligned with the edge of the corresponding grid 60. Since each grid 60 is located in the corresponding limiting groove 23, the relative position of each grid 60 and the support frame 10 is fixed. After aligning a grid 60 with the drawn grid end line 701 and grid edge line 702, the position of the grid 60 is fixed, and correspondingly, the positions of the other grids 60 are fixed.

[0068] Step S5: Fix the support frame 10 to the ship platform plate 70 using the first fixing member 30. Specifically, open the magnetic switch 31 of the first fixing member 30 to firmly attach the support frame 10 to the surface of the ship platform plate 70. Since the relative positions of each grille 60 and the support frame 10 are fixed, after fixing the support frame 10 to the ship platform plate 70, the relative positions of each grille 60 and the ship platform plate 70 are fixed.

[0069] Step S6: Weld and fix each grid 60 fixed in the grid positioning fixture to the ship platform plate 70.

[0070] Since the support frame 10 is fixed to the ship platform plate 70, it acts as a clamping force on the grating 60, thus pressing and fixing the grating 60 firmly onto the ship platform plate 70. Therefore, during the welding process of the grating 60, there is no need for manual clamping, preventing displacement of the grating 60 during welding and reducing welding difficulty and workload. Grating positioning welding can be completed without the assistance of others, allowing for single-person operation (high construction efficiency). The grating positioning and welding accuracy is high. During the positioning welding process, the grating 60 will not undergo three-dimensional spatial displacement, thus not increasing welding difficulty or workload and preventing welding quality accidents. The absence of manual clamping during the positioning welding process avoids injury to personnel from arc light and high-temperature spatter. Furthermore, since this invention eliminates the need for manual clamping of the grating 60, only one person is required to complete the positioning and installation of the grating 60, saving labor costs. It is applicable to the positioning and installation of process hole gratings in all three-dimensional spaces, avoiding the problem of difficulty in clamping gratings on vertical surfaces and from below due to their own weight.

[0071] In some embodiments, after step S2 and before step S4, the method further includes: moving each grille 60 along the second direction Y so that the end of each grille 60 abuts against the limiting plate 50, thereby making the ends of each grille 60 flush. When drawing the grille end line 701, drawing one grille end line 701 is sufficient to align the ends of each grille 60; and / or, using the second fixing member 40 to attract each grille 60, fixing the grille 60 to the support frame 10 to prevent warping and deformation of the grille 60 during welding. Specifically, the magnetic switch 31 on the side of the second fixing member 40 is turned on, making the second fixing member 40 magnetic and attracting it to the upper surface of the grille 60.

[0072] In some embodiments, before step S1, the method further includes: flipping the grid positioning fixture 180 degrees and placing it in a planar position so that the slots of the limiting grooves 23 formed by each limiting block group 20 face upwards, which facilitates the positioning and installation of the grid 60; before step S4, flipping the grid positioning fixture 180 degrees again and placing it in a planar position, waiting for it to be installed as a whole in the process hole 80 position.

[0073] In some embodiments, step S6 includes: performing tack welding on each end of all the grilles 60 where they contact the platform plate, see reference. Figure 9 The locating weld position 601 of the grating 60 is then established. After the locating weld is completed, the magnetic switches 31 of the first fixing member 30 and the second fixing member 40 are closed, and the grating 60 locating device is removed. Welding is then performed on the grating 60, specifically by first welding the fillet weld at the contact point between the grating 60 and the plane of the ship platform plate 70. (See reference...) Figure 10 The first fillet weld is located at position 602; then the fillet weld at the contact point between the grid 60 and the edge of the process hole 80 is welded, see reference. Figure 10 The second corner weld is located at position 603.

[0074] When tack welding the ends of the grid 60 and when welding the grid 60, CO2 gas shielded welding with E501-1 carbon steel flux-cored welding wire (diameter 1.2mm) is used. The purity of CO2 gas is ≥99.5%; the welding current is 180~220A; and the welding voltage is 26~28V.

[0075] In summary, the embodiments of the present invention provide a grid positioning fixture and a grid installation method, which can realize single-person positioning welding of process hole grids at all positions in three-dimensional space, and realize one-time positioning and installation of all grids 60 of the same process hole 80, effectively improving the positioning welding construction efficiency, construction quality and safety of process hole grids, and reducing the labor intensity, construction difficulty and welding workload of process hole grid positioning welding.

[0076] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A grid positioning fixture, using a predetermined first direction (X) as a reference direction, characterized in that, include: The support frame (10) is provided with a sliding groove (11) whose groove length extends along the first direction (X); The limiting block group (20) is provided in multiple groups, and the multiple groups of the limiting block group (20) are spaced apart in the sliding groove (11) along the first direction (X); the limiting block group (20) includes a first limiting block (21) and a second limiting block (22), the positions of the first limiting block (21) and the second limiting block (22) in the sliding groove (11) are adjustable, and the space between the first limiting block (21) and the second limiting block (22) in the same limiting block group (20) forms a limiting groove (23) for placing the grille (60). The first fastener (30) is detachably connected to the support frame (10), and the first fastener (30) is used to fix the support frame (10). With the set second direction (Y) as the reference direction, the second direction (Y) is intersecting the first direction (X). There are at least two sliding grooves (11), and the at least two sliding grooves (11) are spaced apart along the second direction (Y). Each sliding groove (11) is provided with the limiting block group (20). The sliding groove (11) has multiple sliding grooves (1111) on its bottom plate (111). The multiple sliding grooves (1111) are spaced apart along the first direction (X). Each sliding groove (1111) is equipped with a first fastener (112) and a second fastener (113). The first fastener (112) is connected to the first limiting block (21) in the same limiting block group (20), and the second fastener (113) is connected to the second limiting block (22) in the same limiting block group (20). The first fastener (30) has a first adsorption surface for adsorbing the ship platform plate (70), and the first adsorption surface is flush with the lower surface of each of the grilles (60).

2. The grid positioning fixture according to claim 1, characterized in that, With the second direction (Y) as a reference direction, the second direction (Y) intersects with the first direction (X). The support frame (10) is provided with a limiting plate (50) at one end in the second direction (Y). The limiting plate (50) protrudes from the support frame (10) and extends along the first direction (X) to abut against each of the grilles (60).

3. The grid positioning tooling of claim 2, wherein, It also includes a second fastener (40) which is detachably connected to the support frame (10), and the second fastener (40) has a second adsorption surface that adsorbs the grid (60).

4. The grid positioning tooling of claim 3, wherein, The second adsorption surface of the second fastener (40) is flush with the lower surface of the support frame (10).

5. The grid positioning tooling of claim 3, wherein, The first fixing member (30) and / or the second fixing member (40) are magnetic members, and the side of the magnetic member is provided with a magnetic switch (31) for controlling the magnetism.

6. A method of installing a grid using the grid positioning tool of any one of claims 3-5, wherein, include: Step S1: Place a grid (60) in the limiting groove (23) of the limiting block group (20) located at or near the middle position along the first direction (X), and adjust the position of the limiting groove (23) so that the grid (60) is located at the middle position of the sliding groove (1111) corresponding to the limiting block group (20). Step S2: Place the grid (60) one by one in the limiting groove (23) of each limiting block group (20), and adjust the spacing between adjacent limiting grooves (23); Step S3: Draw the grid end line (701) and grid edge line (702) of one of the grids (60) at the process hole (80) position of the ship platform plate (70). Step S4: Move the grid positioning fixture pre-installed with grid (60) to the process hole (80) position, so that the drawn grid end line (701) is aligned with the end of the corresponding grid (60), and the drawn grid edge line (702) is aligned with the edge of the corresponding grid (60). Step S5: Fix the support frame (10) to the ship platform plate (70) by means of the first fastener (30); Step S6: Weld and fix each grid (60) fixed in the grid positioning fixture to the ship platform plate (70).

7. The method of claim 6, wherein, After step S2 and before step S4, the method further includes: moving each grille (60) along the second direction (Y) so that the end of each grille (60) abuts against the limiting plate (50); and / or, adsorbing each grille (60) by the second fastener (40).

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