Accurate positioning auxiliary device for web of LNG (Liquefied Natural Gas) ship

Abstract

The utility model discloses an LNG ship web accurate positioning auxiliary device which comprises an n-shaped frame, a hand wheel and a fixed magnet block, the hand wheel is in threaded connection with the frame through a positioning bolt at the lower end, and the tip end of the positioning bolt can move up and down perpendicular to the frame through threaded rotation so as to position the center of a web positioning line and the center of a web on a ship body. The web plate is fixed on the ship body, and a fixed magnet block for adsorbing and fixing the frame on the ship body is arranged on the wing plate on one side of the frame. According to the utility model, the positioning bolt is matched with the hand wheel, so that the web is accurately aligned with the hull structure, and the positioning accuracy is improved; meanwhile, through the combination of the magnet blocks and the positioning bolts, the web plate on the inclined surface is effectively fixed, sliding displacement in the welding process is prevented, and the module falling accuracy is improved; in addition, by fixing a magnet block, installation, position adjustment and daily storage of the device are facilitated, space is saved, and devices of different specifications can be carried conveniently to meet the positioning requirements of webs of different widths.

Description

TECHNICAL FIELD

[0001] The utility model belongs to shipbuilding technical field especially relates to a LNG ship web plate accurate positioning auxiliary device. BACKGROUND

[0002] In the shipbuilding process of LNG ship, the positioning of web plate to the ship structure is crucial, because it directly affects the accuracy of module angle iron or column landing when the modules of the ship are docked. The purpose of web plate pre-installation is to reduce the rework amount of coating before welding time, so LNG ship needs very high reliability when positioning web plate welding.

[0003] In traditional operation, the web plate is often aligned with the web plate positioning line on the surface of the ship body by experience after the web plate positioning line is drawn on the surface of the ship body, and then the web plate is welded and fixed on the ship structure. However, the positioning center point is covered when the web plate is installed and positioned, and when the web plate pre-installation section is in a non-horizontal state, it may slip and affect the installation accuracy of the web plate. Specifically, the following effects may occur:

[0004] 1. When the positioning center point is covered: Since the positioning center point is the key reference point for ensuring the accurate alignment of the web plate and the ship structure, if the positioning center point is covered, it may lead to inaccurate welding position, thereby affecting the stability and strength of the entire ship structure, which may cause structural weaknesses and increase the risk of accidents due to structural failure during navigation; at the same time, due to inaccurate positioning, additional time and cost may be required to correct errors, which will delay the construction progress of the ship and increase costs, and in extreme cases, if the positioning error is too large, the web plate may need to be re-manufactured and installed, which will result in greater economic losses; in addition, the covering of the positioning center point may also cause subsequent installed equipment or components to be incorrectly installed, as they rely on accurate web plate position to ensure their functionality and performance.

[0005] 2. When the web plate pre-installation section is in a non-horizontal state and slips: When the web plate pre-installation section is in a non-horizontal state, the slip that occurs when the web plate cannot be effectively fixed to the ship structure may affect the installation accuracy of the web plate, leading to uneven welding and increasing the risk of welding defects such as cracks, pores and incomplete fusion, etc. These defects may cause malfunctions during ship operation, affecting the service life and safety of the ship; at the same time, the slip may also cause poor connection between the web plate and other structural components, affecting the stability of the overall structure, for example, the connection between the web plate and the ship body is not strong enough, which may cause structural separation or damage when the ship is subjected to wave impact or other external forces.

[0006] In summary, the precise positioning of the web plate and the hull structure is crucial for the safety and reliability of the LNG ship, and any deviation in positioning can lead to serious safety accidents and economic losses. Therefore, there is an urgent need for a LNG ship web plate precise positioning auxiliary device to ensure the stability of the precise positioning installation and welding process of the web plate and the hull structure. Utility model content

[0007] To solve the problems existing in the prior art described above, the purpose of the utility model is to provide a LNG ship web plate precise positioning auxiliary device, the utility model discloses through the positioning bolt and hand wheel auxiliary adjustment, realize the accurate alignment of web plate and hull structure, improve the positioning precision, and the frame groove board limiting and magnet block adsorption can effectively prevent the deformation and slip of burning and welding, and the module positioning accuracy is improved, in addition, the magnet block is convenient for device installation adjustment and storage, saves the space, and is suitable for different web plate widths.

[0008] To achieve the above-mentioned purposes and other related purposes, the utility model adopts the following technical scheme:

[0009] The utility model provides a LNG ship web plate precise positioning auxiliary device, including frame, hand wheel and fixed magnet block,

[0010] The lower end of the hand wheel is vertically fixed with a positioning bolt, and the hand wheel is threadedly connected with the upper end surface of the frame through the positioning bolt, and the positioning bolt can move up and down along the direction perpendicular to the upper end surface of the frame through thread rotation, so as to position the web plate positioning line center and the web plate center on the hull structure and provide the fastening force for fixing the web plate on the hull structure.

[0011] The frame is in the shape of a few characters and includes a top plate, groove plates vertically arranged on both sides of the top plate and wing plates vertically arranged on the lower edges of the two groove plates.

[0012] The fixed magnet block is arranged on one side of the frame, and the fixed magnet block is used to adsorb and fix the frame on the hull structure.

[0013] As a preferred technical scheme, a positioning hole is formed in the top plate, the positioning hole has an inner thread matched with the outer thread of the positioning bolt, and the tip of the positioning bolt can move up and down along the central axis of the positioning hole.

[0014] As a preferred technical scheme, the positioning hole is located at the central position of the upper end surface of the top plate.

[0015] As a preferred technical scheme, the distance between the two groove plates is slightly greater than the width of the web plate.

[0016] As a preferred technical scheme, the fixed magnet block is longitudinally arranged on the upper end surface of one side of the frame wing plate.

[0017] As a further preferred technical solution, the auxiliary device further comprises a movable magnet block for adsorbing and fastening the other side plate to the ship body structure.

[0018] As described above, the utility model has the following beneficial effects:

[0019] (1) The utility model discloses a kind of LNG ship web precise positioning auxiliary devices, by the positioning bolt located in the center of frame, combined with hand wheel auxiliary up and down adjustment, can assist the center of web and the center of web positioning line on ship body structure alignment, improve the accuracy of positioning, simultaneously, web can be always adhered and fixed to ship body structure in the process of burning and welding welding, and the web both sides are always limited by the groove plate of the both sides of frame, can effectively prevent burning and welding thermal expansion deformation influence web positioning.

[0020] (2) The utility model discloses a kind of LNG ship web precise positioning auxiliary devices, when web preloading section is in non-horizontal state, i.e., the surface of the ship body structure of preparing to install web is inclined, by the adsorption magnetic force of combined fixed magnet block and the jacking force of positioning bolt, web can be effectively fixed to inclined surface, avoid the phenomenon such as slippage displacement of web in welding process, so as to improve the accuracy of module drop, prevent the occurrence of later adjustment web and bracket angle iron etc., so as to reduce the working hours of on-site adjustment, reduce cost and increase benefit.

[0021] (3) The utility model discloses a kind of LNG ship web precise positioning auxiliary devices, by being provided with fixed magnet block on the side plate of frame, it can be convenient to install device to any ship body structure position, and it is convenient to adjust position;While, in daily storage, each different groove plate spacing size auxiliary device frame can also be adsorbed and stacked by fixed magnet block, save the space of storage, it is convenient to carry different size specifications of auxiliary device to adapt to web of different width on site. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the auxiliary device structure schematic view in the utility model.

[0023] Figure 2 It is the operation schematic view of the utility model in rotating hand wheel downward to utilize the center of positioning bolt tip alignment web positioning line.

[0024] Figure 3 It is the operation schematic view of the utility model in rotating hand wheel upward to provide web access and adjustment space.

[0025] Among them, the specific descriptions of the figure marks are as follows: 1. web; 2. hull structure; 3. frame; 31. top plate; 311. positioning hole; 32. slot plate; 33. wing plate; 331. fixed magnet block; 4. hand wheel; 41. positioning bolt. DETAILED DESCRIPTION

[0026] In order to better understand the purpose, structure and function of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] In the description of the present invention, it should be noted that the positional relationships indicated by terms such as "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" cited in this specification are based on the positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0028] Example

[0029] like Figure 1 As shown, this embodiment provides an auxiliary device for precise positioning of the web of an LNG ship, including a frame 3, a hand wheel 4 and a fixed magnet block 331.

[0030] A positioning bolt 41 is vertically fixed to the lower end of the handwheel 4, and the positioning bolt 41 is vertically fixed at the center of the lower end of the handwheel 4. The handwheel 4 is threadedly connected to the upper end surface of the frame 3 through the positioning bolt 41. The positioning bolt 41 can rotate the thread to make the tip of the positioning bolt 41 move up and down in a direction perpendicular to the upper end surface of the frame 3, so as to locate the center of the positioning line of the web 1 on the hull structure 2 and the center of the web 1, and provide a fastening force to fix the web 1 to the hull structure 2; a positioning hole 311 is opened at the center of the upper end surface of the frame 3, and the positioning hole 311 has an internal thread matching the external thread of the positioning bolt 41. The handwheel 4 is threadedly connected to the frame 3 through the positioning bolt 41, and the tip of the positioning bolt 41 can move up and down along the central axis of the positioning hole 311;

[0031] The frame 3 comprises a top plate 31, two groove plates 32 vertically arranged on both sides of the top plate 31, and a wing plate 33 vertically arranged at the lower edge of the two groove plates 32, so that the frame 3 is in the shape of a few characters, and the distance between the two groove plates 32 is slightly larger than the web plate 1, so that the web plate 1 can slide along the center line of the frame 3 in the U-shaped space formed by the top plate 31 and the two groove plates 32.

[0032] The frame 3 is provided with a fixed magnet block 331 on one side of the wing plate 33, which is used to adsorb and fix the frame 3 on the hull structure 2, and the frame 3 of the auxiliary device with different groove plate 32 spacing sizes can also be adsorbed and stacked in daily storage through the fixed magnet block 331, saving storage space and facilitating the carrying of auxiliary devices of different sizes to adapt to web plates 1 of different widths.

[0033] In this embodiment, the frame 3 is composed of angle iron welding, which can make the frame 3 complete and integrated, ensure the right angle between the plates of the frame 3, make the auxiliary device more closely fit with the web plate 1 and the hull structure 2, improve the positioning accuracy, and effectively prevent the web plate 1 from slipping and deforming during the welding process; the fixed magnet block 331 is longitudinally arranged on the upper end surface of the wing plate 33 on one side of the frame 3, further strengthening the adsorption magnetic force between the frame 3 and the hull structure 2.

[0034] As shown in Figure 2 and Figure 3 In actual work, the method for assisting the web plate 1 in precise positioning by using the auxiliary device includes the following specific use steps:

[0035] S1, draw a web plate 1 positioning line on the hull structure 2 at the prepared installation position of the web plate 1, mark the center of the web plate 1 positioning line, and mark the center of the web plate 1 on the web plate 1.

[0036] S2, select a frame 3 with a suitable size according to the width of the web plate 1, and select a frame 3 with a distance between the two groove plates 32 on both sides of the frame 3 slightly larger than the width of the web plate 1.

[0037] S3, place the auxiliary device near the web plate 1 positioning line on the hull structure 2, and use the magnetic force of the fixed magnet block 331 on the wing plate 33 on one side of the frame 3 to adsorb and fix the auxiliary device on the hull structure 2, so that the wing plates 33 on both sides of the frame 3 are located on both sides of the web plate 1 positioning line.

[0038] S4, use the auxiliary device to align the center of the web plate 1 with the center of the web plate 1 positioning line.

[0039] S4-1, first, rotate the hand wheel 4 on the auxiliary device downward, so that the tip of the positioning bolt 41 is slightly higher than the upper surface of the hull structure.

[0040] S4-2, then, in the state of keeping the auxiliary device side adsorbed, the position of the auxiliary device is moved to align the tip of the positioning bolt 41 with the center of the web plate 1 positioning line.

[0041] S4-3, then, the hand wheel 4 is rotated upwards until the tip of the positioning bolt 41 is higher than the height of the web plate 1, the web plate 1 is placed in the gap between the frame 3 and the hull structure 2, and the position of the web plate 1 is adjusted until the center of the web plate 1 is aligned with the tip of the positioning bolt 41.

[0042] S5, finally, the tip of the positioning bolt 41 is used to fix the web plate 1 on the hull structure 2 by rotating the hand wheel 4 downwards, and the welding operation is performed.

[0043] In another embodiment, the auxiliary device further comprises a movable magnet block, after the tip of the positioning bolt 41 is aligned with the center of the web plate 1 positioning line in step S4-2, the movable magnet block is placed on the other side plate 33 to adsorb the other side plate 33 tightly to the hull structure 2, thereby enhancing the stability of the auxiliary device and the hull structure 2 and reducing the risk of displacement of the auxiliary device when placing the web plate 1 or tightening the fixation.

[0044] In the auxiliary device, the fixed magnet block 331 and the movable magnet block are both made of boron ferrous strong magnets, when the pre-installed segmented web plate 1 is in a non-horizontal state, i.e., the upper surface of the hull structure 2 on which the web plate 1 is to be installed is inclined, the adsorption magnetic force of the fixed magnet block 331 and the tightening force of the positioning bolt 41 can effectively fix the web plate 1 to the inclined surface, avoiding the sliding displacement of the web plate 1 during welding, thereby improving the accuracy of the module positioning and preventing the adjustment of the web plate 1 and the bracket angle iron in the later stage, thereby reducing the on-site adjustment time and reducing costs.

[0045] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any changes or equivalent replacements of the features and embodiments made by those skilled in the art without departing from the spirit and scope of the present application are within the scope of the present application. In addition, the features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the present application without departing from the spirit and scope of the present application. Therefore, the present application is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are within the scope of the present application.

Claims

1. An auxiliary device for precise positioning of webs of LNG ships, characterized in that: It comprises a frame (3), a hand wheel (4) and a fixed magnet block (331); A positioning bolt (41) is vertically fixed to the lower end of the hand wheel (4), and the hand wheel (4) is threadedly connected to the upper end surface of the frame (3) through the positioning bolt (41). The positioning bolt (41) can be rotated by the thread to make the tip of the positioning bolt (41) move up and down in a direction perpendicular to the upper end surface of the frame (3), so as to locate the center of the positioning line of the web (1) on the hull structure (2) and the center of the web (1), and provide a fastening force for fixing the web (1) to the hull structure (2); The frame (3) is in the shape of a Chinese character "J", and comprises a top plate (31), groove plates (32) respectively arranged vertically on both sides of the top plate (31), and wing plates (33) respectively arranged vertically on the lower edges of the groove plates (32) on both sides; A fixed magnet block (331) is provided on a wing plate (33) on one side of the frame (3), and the fixed magnet block (331) is used to adsorb and fix the frame (3) on the hull structure (2).

2. The LNG ship web precise positioning auxiliary device according to claim 1 is characterized in that: A positioning hole (311) is provided on the top plate (31), and the positioning hole (311) has an internal thread matching the external thread of the positioning bolt (41), and the tip of the positioning bolt (41) can move up and down along the central axis of the positioning hole (311).

3. The LNG ship web precise positioning auxiliary device according to claim 2 is characterized in that: The positioning hole (311) is located at the center of the upper end surface of the top plate (31).

4. The LNG ship web precise positioning auxiliary device according to claim 3 is characterized in that: The distance between the two side groove plates (32) is slightly larger than the width of the web (1).

5. The LNG ship web plate precise positioning auxiliary device according to claim 3, characterized in that: The fixed magnet block (331) is disposed on the upper end surface of a wing plate (33) on one side of the frame (3).

6. The LNG ship web precise positioning auxiliary device according to any one of claims 1 to 5, characterized in that: It also includes a movable magnet block for adsorbing and fastening the other side wing plate (33) to the hull structure (2).

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