A device and method for welding a short tube opening in a hull line region floor

Abstract

The application discloses a device and method for welding short pipe opening of a ship line type area bottom plate, which comprises a body and a positioning assembly. The body comprises a horizontal pipe fixed on a controllable magnet base through a vertical pipe, a horizontal adjusting pipe and a positioning seat plate. The positioning assembly comprises a core taking plate and a sample punch embedded on the positioning seat plate. According to the coordinates of the opening center on the drawing, the device is adsorbed on the bottom plate through the base, the orientation of the horizontal pipe and the length of the horizontal adjusting pipe are adjusted, so that the projection of the center of the positioning seat plate falls on the opening center. The positioning of the opening center is completed through the core taking hole on the core taking plate and the sample punch knocking. The device further comprises a line marking assembly, which comprises a positioning rod, a horizontal telescopic rod and a pen sleeve for sleeving a line marking pen. The positioning rod is also arranged in the core taking hole, so that the line marking pen can freely move up and down in the pen sleeve when rotating around the central axis of the core taking hole. The positioning and line marking of the opening can be more quickly and accurately completed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of shipbuilding, and particularly relates to a device and method for welding short pipes in the opening of a ship line region bottom plate. BACKGROUND

[0002] In the traditional shipbuilding process, the production, opening and installation of the pipe system is a complex and labor-intensive project. The production of the pipe is usually divided into two steps: one is to produce parts according to the distribution and orientation of the layout in the production workshop in advance, which is suitable for most pipes, especially large diameter pipes, because they can be produced in advance to reduce the complexity of on-site construction. The second is on-site lofting, which is usually suitable for a small part of pipe production due to large ship deformation, large equipment positioning error and other uncertain factors. The pipe material is diverse, including steel pipe, stainless steel pipe, copper pipe, copper-nickel alloy pipe, red copper pipe and plastic coated pipe.

[0003] Taking the seawater pipe on the sea as an example, the seawater pipe is a large-diameter pipe with a diameter of about 200 mm, which needs to be directly in contact with seawater. If ordinary materials are used, a large amount of corrosion will occur, so in view of the service life, the seawater pipe generally uses expensive materials such as alloy pipe or plastic coated pipe. However, once the seawater pipe is scrapped and cannot be used, it will cause high cost. Therefore, the production and installation of the seawater pipe require high precision, especially the opening positioning precision of the welded short pipe at the suction port of the seawater pipe on the inner bottom plate of the ship line region, which requires strict positioning. Once the opening positioning is wrong, the seawater pipe cannot be installed, which will cause the entire seawater pipe or even several seawater pipes to be scrapped.

[0004] The traditional opening positioning method mainly relies on workers using a tape measure to measure and position, but this method has obvious defects. For example, the opening data provided on the construction layout and installation drawing is usually based on the horizontal Y-axis width direction of the ship, but when measuring on site, the actual line opening distance from the center line of the ship is often less than the horizontal distance required by the construction drawing due to the linear surface of the inner bottom plate, which causes the seawater pipe to be unable to be installed in place during installation. At the same time, the positioning of the workers through visual observation or tape measure will cause the height of the flange of the first welded suction short pipe to be positioned inaccurately in the Z-axis height direction, and in the case of inaccurate positioning in the Z-axis height direction, directly welding the suction short pipe will also cause the seawater pipe to be installed incorrectly. Therefore, without the use of any instruments and tools, the workers rely on the traditional tape measure and visual observation experience to position and install the opening, which is prone to cause errors in the Y-axis coordinate opening positioning in the ship width direction and the Z-axis coordinate height positioning of the suction short pipe in the ship height direction, thereby increasing the risk of seawater pipe scrap.

[0005] In the prior art, although the total station can be used to assist in the opening positioning and marking of the welded short pipe, the total station has very high requirements for the use environment, and needs to be used under the condition of static without construction vibration, but the construction environment of the shipyard is generally poor, and there are many cross operations, which cannot meet the required static environment.

[0006] Therefore, there is an urgent need to invent a new opening positioning and marking method to improve the opening precision and efficiency of the short pipe welded to the bottom plate of the ship line region, and to reduce material waste. SUMMARY

[0007] To solve the problems in the prior art described above, the purpose of the present application is to provide a device and method for opening the short pipe welded to the bottom plate of the ship line region, which can conveniently and effectively improve the efficiency of the Y-axis distance from the keel size of the opening positioning and marking, and can also improve the marking precision by using the level to measure the levelness of the device during marking. In addition, the present application can be used for opening, marking and positioning at the bottom plate and outer plate of the ship line region, and can also be used for positioning the suction inlet of the seawater pipe, and can be used for marking and positioning and installing the blow pipe and the air pipe of the subsea valve box.

[0008] To achieve the above-mentioned purpose and other related purposes, the present application adopts the following technical solutions:

[0009] The first aspect of the present application provides a device for opening the short pipe welded to the bottom plate of the ship line region, comprising a body and an opening positioning assembly.

[0010] The body comprises a controllable magnet base, a vertical pipe, a horizontal pipe, a horizontal adjusting pipe and a positioning seat plate. The vertical pipe is fixed at the central position of the upper end face of the controllable magnet base. The horizontal pipe is sleeved with the horizontal adjusting pipe at one end, the horizontal adjusting pipe moves horizontally along the central axis of the horizontal pipe and is locked and fixed on the horizontal pipe by a fastener. The vertical pipe is vertically penetrated through the pipe wall at the other end of the horizontal pipe, the horizontal pipe moves vertically along the central axis of the vertical pipe and is locked and fixed on the vertical pipe by a fastener. The positioning seat plate is fixed at the end of the horizontal adjusting pipe away from the horizontal pipe. A length scale in the horizontal direction is arranged on the horizontal adjusting pipe, and the length scale displays the distance from the center of the positioning seat plate to the central axis of the vertical pipe.

[0011] The opening positioning assembly comprises a core taking plate and a core taking sample punch. The core taking plate is fixed by clamping on the positioning seat plate, and the center of the core taking hole coincides with the center of the positioning seat plate. The core taking sample punch can be sleeved in the core taking hole and move vertically along the central axis of the core taking hole, and the tip of the core taking sample punch always falls on the central axis of the core taking hole.

[0012] As a further preferred technical solution, it further comprises a core hole scribing assembly, which is sleeved on the core plate through the core hole; the core hole scribing assembly comprises a positioning rod, a horizontal telescopic rod and a limiting pen sleeve for sleeving a scribing pen;

[0013] The upper end of the positioning rod can be sleeved in the core hole and vertically move up and down along the central axis of the core hole, and the lower end of the positioning rod is provided with a sharp tip, which always falls on the central axis of the core hole;

[0014] One end of the horizontal telescopic rod is vertically fixed on the positioning rod, and the other end of the horizontal telescopic rod is fixed with the limiting pen sleeve, the central axis of the limiting pen sleeve is parallel to the central axis of the core hole, the horizontal telescopic rod is provided with a horizontal radius scale and is locked in a telescopic length by a fastener, and the radius scale displays the distance between the central axis of the limiting pen sleeve and the central axis of the core hole;

[0015] The scribing pen can be sleeved in the limiting pen sleeve and vertically move up and down along the central axis of the limiting pen sleeve.

[0016] In a second aspect of the present application, a method for welding a short pipe opening in a ship line area bottom plate is provided, comprising the following steps:

[0017] S1, preparing any of the above-mentioned devices;

[0018] S2, according to the coordinates of the opening center on the drawing, installing the controllable magnet base on the bottom plate at the centerline of the ship, and adjusting the orientation of the horizontal pipe and the length of the horizontal adjusting pipe, so that the projection of the center of the positioning seat plate falls on the opening center;

[0019] S3, installing the opening positioning assembly on the positioning seat plate, and placing the core sample punch in the core hole, forming a positioning recess at the opening center on the bottom plate by knocking the core sample punch, removing the core sample punch, and completing the positioning of the opening center;

[0020] S4, according to the diameter of the opening center on the drawing, taking the positioning recess as the center, and drawing the opening line.

[0021] As a preferred technical solution, the specific steps in step S2 include:

[0022] S2-1, according to the coordinates (X, Y) of the opening center on the drawing, X is the rib position number where the opening center is located, and Y is the distance from the opening center to the centerline of the ship, the controllable magnet base is fixed on the bottom plate by magnetic adsorption, and the center of the controllable magnet base is located at the intersection of the centerline of the ship and the rib position corresponding to the number X on the bottom plate;

[0023] S2-2, simultaneously, adjust the orientation of the horizontal tube so that the horizontal tube is oriented to coincide with the direction of the rib in which the center of the opening is located;

[0024] S2-3, adjust the length of the horizontal adjusting tube, and lock and fix the length after the length scale displays Y.

[0025] As a preferred technical solution, the device in step S1 further comprises a level, which is arranged on the horizontal tube, and in step S2, the level is used to monitor the levelness.

[0026] As a preferred technical solution, the positioning seat plate is provided with a positioning groove, and the lower end surface of the coring plate is provided with a positioning convex which is matched with the positioning groove, and the specific steps of step S3 include: embedding and fixing the coring plate in the positioning groove of the positioning seat plate through the positioning convex, placing a coring sample punch in the coring hole of the coring plate, adjusting the height of the horizontal tube so that the upper end surface of the coring sample punch is higher than the upper end surface of the coring plate, and knocking the coring sample punch on the base plate to form a positioning concave, and then taking out the coring sample punch.

[0027] As a preferred technical solution, when the device prepared in step S1 is the device described in the former, step S4 includes the following steps: according to the diameter of the center of the opening on the drawing, taking the positioning concave as the center, using a compass to preliminarily draw a line and completing the drawing of the opening line through correction;

[0028] When the device prepared in step S1 is the device described in the latter, step S4 includes the following steps: according to the diameter of the center of the opening on the drawing, adjusting the telescopic length of the horizontal telescopic rod to half of the diameter of the opening and locking and fixing, then placing the upper end of the positioning rod in the coring hole, placing the lower end of the positioning rod on the positioning concave, and then completing the drawing of the opening line through a marking pen sleeved in the limiting pen sleeve.

[0029] Further, when the device prepared in step S1 is the device described in the latter, the step of completing the drawing of the opening line through the marking pen sleeved in the limiting pen sleeve in step S4 includes: placing the marking pen in the limiting pen sleeve, and drawing a line by lightly pressing the upper end of the marking pen with a finger, so that the marking pen moves up and down to fit the curved surface of the base plate, and the opening line is drawn.

[0030] Further, the step of completing the drawing of the opening line through the marking pen sleeved in the limiting pen sleeve further includes: selecting a suitable length of the marking pen to ensure that when the marking pen fits the lowest point of the curved surface of the base plate, the upper end surface of the marking pen is higher than the upper end surface of the limiting pen sleeve.

[0031] As described above, the present application has the following beneficial effects:

[0032] (1) The device and method for opening and positioning the short pipe of the bottom plate in the ship line type area of the application greatly improve the positioning accuracy of the opening of the short pipe in seawater welding by efficient use of the device, and realize the integration of multiple functions, so that the opening positioning and opening marking operations can be completed by the same device, simplifying the operation process.

[0033] (2) The device and method for opening and positioning the short pipe of the bottom plate in the ship line type area of the application can be adjusted in the Y-axis ship width direction through the horizontal telescopic adjustment and length scale reading of the device, and is suitable for the opening positioning accuracy and marking accuracy of the inner bottom plate and the outer plate on the ship under different coordinate distances and amidship sizes, improving the positioning accuracy and positioning efficiency in the ship manufacturing process, and enhancing the flexibility and practicality of the device;

[0034] (3) The device and method for opening and positioning the short pipe of the bottom plate in the ship line type area of the application can be used for the positioning of the seawater pipe suction port, as well as the marking positioning and installation of the blow pipe and the air pipe of the sea valve box, increasing the application range and having wide applicability.

[0035] (4) The device and method for opening and positioning the short pipe of the bottom plate in the ship line type area of the application can ensure that the measured Y-axis size is a horizontal size consistent with the horizontal size marked on the drawing by measuring the levelness on the horizontal pipe, avoiding the error caused by the horizontal deviation of the traditional tape measure, and improving the marking accuracy.

[0036] (5) The device and method for opening and positioning the short pipe of the bottom plate in the ship line type area of the application can accurately find the center of the opening of the bottom plate welding short pipe by using the core taking plate in the opening positioning assembly, and accurately adjust to meet the opening diameter requirement and perform marking by using the radius scale of the horizontal telescopic rod in the opening marking assembly, ensuring the accuracy of opening positioning and opening marking.

[0037] (6) The device and method for opening and positioning the short pipe of the bottom plate in the ship line type area of the application can realize free suction and release by using the controllable magnet base, and tightly adsorb and fix the whole device by using the free suction and release magnet, thereby improving the stability of the device and the convenience of operation. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is the ship body profile schematic diagram when the opening and positioning of the short pipe of the inner bottom plate in the application is performed.

[0039] Figure 2 is Figure 1 the local enlarged schematic diagram.

[0040] Figure 3It is the local ship body profile schematic view when the short pipe is welded on the inner bottom plate in the application.

[0041] Figure 4 It is the front view profile structure diagram of the positioning seat plate in the application.

[0042] Figure 5 It is the top view structure diagram of the positioning seat plate in the application.

[0043] Figure 6 It is the front view profile structure diagram of the core plate in the application.

[0044] Figure 7 It is the top view structure diagram of the core plate in the application.

[0045] Figure 8 It is the front view structure diagram of the hole line marking assembly in the application.

[0046] In which, the specific description of the reference signs is as follows:

[0047] 1, ship body; 11, inner bottom plate; 12, outer plate; 13, ship center line;

[0048] 2, body; 21, controllable magnet base; 22, vertical pipe; 221, height scale; 23, horizontal pipe; 231, locking bolt one; 232, locking bolt two; 233, level; 24, horizontal adjusting pipe; 241, length scale; 25, positioning seat plate; 251, positioning groove;

[0049] 3, hole positioning assembly; 31, core plate; 311, positioning convex; 312, core hole; 32, core sample punch;

[0050] 4, hole line marking assembly; 41, positioning rod; 42, horizontal telescopic rod; 421, radius scale; 43, limiting pen sleeve; 5, line marking pen. DETAILED DESCRIPTION

[0051] In order to better understand the purpose, structure and function of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in the following combined with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. In the description of the present application, it should be noted that the position relationship indicated in the specification, such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the position relationship shown in the drawings, only for the convenience of describing the embodiments of the present application and simplifying the description, and cannot be understood as indicating or implying that the indicated or implied device or element must have a particular orientation, be constructed and operated in a particular direction, therefore, it cannot be understood as a limitation of the present application.

[0052] Example 1

[0053] like Figures 1 to 3 As shown, this embodiment provides a device for opening holes for welding short pipes in the bottom plate of a ship's linear area, and the device includes a main body 2, a hole positioning component 3, and a hole marking component 4.

[0054] The body 2 includes a controllable magnet base 21, a vertical tube 22, a horizontal tube 23, a horizontal adjustment tube 24 and a positioning base plate 25. The vertical tube 22 is fixed at the center of the upper end surface of the controllable magnet base 21. The wall of the vertical tube 22 is provided with a height scale 221 in the vertical direction. The height scale 221 shows the distance from the lower end surface of the positioning base plate 25 to the lower end surface of the controllable magnet base 21. The height scale 221 is used to read, mark and adjust the height Z-axis direction of the horizontal tube 23. The controllable magnet base 21 is provided with a magnetic switch for controlling the magnetic attraction force. The horizontal tube 23 is open at one end and closed at the other end. The vertical tube 22 vertically penetrates the wall of the horizontal tube 23 near the closed end, so that the horizontal tube 23 can move vertically up and down along the central axis of the vertical tube 22. The horizontal tube 23 is locked and fixed to the vertical tube 22 by a locking bolt 231 provided on the end surface of the closed end. The horizontal adjustment tube 24 is sleeved inside the open end of the horizontal tube 23, so that the horizontal adjustment tube 24 can move horizontally left and right along the central axis of the horizontal tube 23. The horizontal adjustment tube 24 is locked and fixed to the horizontal tube 23 by a locking bolt 232 provided on the tube wall of the horizontal tube 23. The positioning seat plate 25 is fixed to the end of the horizontal adjustment tube 24 away from the horizontal tube 23. The tube wall of the horizontal adjustment tube 24 is provided with a length scale 241 in the horizontal direction; the length scale 241 shows the distance from the center of the positioning seat plate 25 to the central axis of the vertical tube. The length scale 241 is used to read, mark and adjust the Y-axis dimension of the opening from the midship. In this embodiment, as shown in FIG. Figure 4 and Figure 5 As shown, the positioning seat plate 25 is a circular ring plate, and a positioning groove 251 is provided on the positioning seat plate 25 .

[0055] The hole positioning assembly 3 includes a coring plate 31 and a coring sample punch 32. Figure 6 and Figure 7As shown, the coring plate 31 is provided with a coring hole 312, and the lower end surface of the coring plate 31 is provided with a positioning protrusion 311 matching the shape and position of the positioning groove 251. When the coring plate 31 is placed on the positioning seat plate 25 through the positioning protrusion 311 and the positioning groove 251, the center of the coring hole 312 coincides with the center of the positioning seat plate 25, and the distance from the center of the coring hole 312 to the central axis of the vertical pipe is the same as the distance from the center of the positioning seat plate 25 to the central axis of the vertical pipe. The outer diameter of the coring punch 32 is slightly smaller than the diameter of the coring hole 312, so that the coring punch 32 can be sleeved in the coring hole 312 and vertically move along the central axis of the coring hole 312.

[0056] As shown in Figure 3 and Figure 8 As shown, the opening scribing assembly 4 includes a positioning rod 41, a horizontal telescopic rod 42, and a limiting pen sleeve 43. One end of the horizontal telescopic rod 42 is vertically fixed to the outer side wall of the positioning rod 41, and the other end of the horizontal telescopic rod 42 is fixed to the limiting pen sleeve 43. The central axis of the limiting pen sleeve 43 is parallel to the central axis of the coring hole 312. The length of the horizontal telescopic rod 42 is controlled and fixed by fasteners. The horizontal telescopic rod 42 is provided with a horizontal radius scale 421, which shows the distance from the central axis of the limiting pen sleeve 43 to the central axis of the coring hole 312. The lower end of the positioning rod 41 is a sharp tip, and the outer diameter of the positioning rod 41 is slightly smaller than the diameter of the coring hole 312, so that the upper end of the positioning rod 41 can be sleeved in the coring hole 312 and vertically move along the central axis of the coring hole 312. The inner diameter of the limiting pen sleeve 43 is slightly larger than the outer diameter of the scribing pen 5, so that the scribing pen 5 can be sleeved in the limiting pen sleeve 43 and vertically move along the central axis of the limiting pen sleeve 43.

[0057] Embodiment 2

[0058] As shown in Figures 1 to 3 The present embodiment provides a method for using the device for opening a hole in a short pipe welded to a bottom plate in a ship line region of embodiment 1. The method is used for hole positioning and hole scribing. The bottom plate includes an inner bottom plate 11 or an outer plate 12. The method includes the following steps:

[0059] S1, prepare a device for opening a hole in a short pipe welded to a bottom plate in a ship line region of embodiment 1.

[0060] S2, according to the coordinates of the hole center on the drawing, install the controllable magnet base 21 on the bottom plate at the ship centerline 13, and adjust the orientation and length of the horizontal pipe 23, so that the projection of the center of the positioning seat plate 25 falls on the hole center.

[0061] According to the coordinates (X, Y) of the hole center on the drawing, the X value is the rib position number where the hole center is located, and the Y value is the distance from the hole center to the ship centerline 13. At the corresponding numbered rib position on the ship centerline 13, the controllable magnet base 21 is fixed on the bottom plate by opening the magnetic switch, and the center of the controllable magnet base 21 is located at the intersection of the ship centerline 13 of the bottom plate and the rib position corresponding to the X value. The horizontal pipe 23 is adjusted to coincide with the direction of the rib position where the hole center is located, and the length of the horizontal adjusting pipe 24 in the horizontal pipe 23 is adjusted by the locking bolt two 232 until the length scale 241 shows the Y value, and then locked and fixed, so that the reading of the length scale 241 meets the requirement of the hole center position distance from the ship in the drawing. At this time, the center of the positioning seat plate 25 coincides with the hole center.

[0062] In other embodiments, a level 233 is also provided on the horizontal pipe 23, and the level 233 is used to monitor the levelness, which can further confirm that the horizontal pipe 23 always remains horizontal, thereby ensuring that the positioning seat plate 25 used to position the hole center also always remains horizontal. If the levelness is found to be not horizontal through the level 233, the levelness of the horizontal pipe 23 can be adjusted by placing shims under the controllable magnet base 21 or by setting an adjusting bolt on the controllable magnet base 21.

[0063] S3, install the hole positioning assembly 3 on the positioning seat plate 25, and place the core sample punch 32 in the core hole 312. Knock the core sample punch 32 to form a positioning recess at the hole center on the bottom plate, remove the core sample punch 32, and complete the positioning of the hole center.

[0064] S3-1, place the core plate 31 on the positioning seat plate 25, align the positioning convex 311 on the core plate 31 with the positioning groove 251 on the positioning seat plate 25, and clamp and fix the core plate 31 on the positioning seat plate 25. Place the core sample punch 32 in the core hole 312 of the core plate 31.

[0065] S3-2, adjust the height of the horizontal pipe 23 by the locking bolt one 231, so that the upper end surface of the core sample punch 32 is higher than the upper end surface of the core plate 31.

[0066] S3-3, use a hammer to knock the core sample punch 32, thereby forming a positioning recess at the hole center on the bottom plate, and remove the core sample punch 32 from the core hole 312.

[0067] S4, according to the diameter of the hole center on the drawing, draw a completed hole line with the positioning recess as the center.

[0068] According to the diameter of the hole center required by the drawing, adjust the telescopic length of the horizontal telescopic rod 42 in the hole marking assembly 4 to half of the hole diameter and lock and fix it by the fastener.

[0069] Through the locking bolt 231 to lift the core plate 31, the upper end of the positioning rod 41 is sleeved into the core hole 312 of the core plate 31 from bottom to top, at this time, the tip of the positioning rod 41 naturally coincides with the positioning concave of the opening center; lower the core plate 31, the positioning rod 41 is limited between the core plate 31 and the bottom plate, avoid the positioning rod 41 out of, make the limiting pen sleeve 43 on the positioning rod 41 through the horizontal telescopic rod 42 connected to the positioning rod 41 along the central axis of the core hole 312 axial movement.

[0070] Put the marking pen 5 in the limiting pen sleeve 43, and draw a line with your fingers on the upper end of the marking pen 5, so that the marking pen 5 can move up and down along the bottom plate line type to fit the bottom plate curve, and draw the opening line; select the appropriate length of the marking pen 5, ensure that when the marking pen 5 fits the lowest point of the bottom plate curve, the upper end face of the marking pen 5 is higher than the upper end face of the limiting pen sleeve 43, so that the marking pen 5 is always limited in the limiting pen sleeve 43.

[0071] In this embodiment, the drawing requirement is: the ship sea water pipe suction opening coordinate is (X=F122#, Y=2800), that is, the opening center coordinate of the welding short pipe mounting hole is at the position 132800mm away from the ship center line 1 at the rib position 122# of the ship body 1 section rib, and the opening diameter of the welding short pipe mounting hole is 255mm; the upper end surface of the welding short pipe is fixed with a welding short pipe flange, the upper surface height of the welding short pipe flange is H=200mm, and the upper surface height of the welding short pipe flange is the distance from the opening center of the opening of the inner bottom plate 11 to the upper surface of the welding short pipe flange.

[0072] Therefore, according to the drawing requirements, the center of the controllable magnet base 21 is placed at the segmented rib position 122# of the hull 1 on the ship centerline 13, the horizontal pipe 23 is raised to 100mm and locked and fixed on the vertical pipe 22 through the locking bolt one 231 on the closed end of the horizontal pipe 23, the horizontal adjusting pipe 24 is inserted into the open end of the horizontal pipe 23; and the levelness is observed and detected through the level 233, since the ship centerline 13 at the position of the hull 1 where the controllable magnet base 21 is installed is a horizontal plane, therefore the horizontal pipe 23 which is parallel to the controllable magnet base 21 and the vertical pipe 22 generally also meets the levelness requirements; the core taking plate 31 is covered on the upper plane of the positioning seat plate 25, the length of the horizontal adjusting pipe 24 is adjusted until the center of the core taking plate 31 is 2800mm away from the center of the vertical pipe 22, that is, the length scale 241 on the horizontal adjusting pipe 24 is adjusted to be consistent with the opening coordinate Y value 2800mm shown in the drawing, and the horizontal adjusting pipe 24 is locked and fixed on the horizontal pipe 23 through the locking bolt two 232. The sample punch is inserted into the core taking hole 312 in the core taking plate 31, and the sample punch is knocked with a hammer, so as to knock out the opening center on the inner bottom plate 11; after the sample punch is removed, the opening marking assembly 4 is installed in the core taking hole 312, and the opening line of the installation hole with a diameter of 255mm is drawn on the linear inner bottom plate 11 by using the opening marking assembly 4, and the opening positioning marking is completed.

[0073] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any person skilled in the art knows that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and 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. A device for welding short pipe openings in the bottom plate of a ship's linear area, characterized in that: It comprises a main body (2) and an opening positioning component (3); The body (2) comprises a controllable magnet base (21), a vertical tube (22), a horizontal tube (23), a horizontal adjustment tube (24) and a positioning seat plate (25); a vertical tube (22) is fixed at the center of the upper end surface of the controllable magnet base (21); one end of the horizontal tube (23) is sleeved with the horizontal adjustment tube (24), and the horizontal adjustment tube (24) moves horizontally left and right along the central axis of the horizontal tube (23) and is locked and fixed to the horizontal tube (23) by a fastener; the other end of the horizontal tube (23) is fixed to the horizontal tube (23). The vertical tube (22) is vertically passed through the tube wall, the horizontal tube (23) moves vertically up and down along the central axis of the vertical tube (22) and is locked and fixed to the vertical tube (22) by fasteners; the positioning seat plate (25) is fixed to the end of the horizontal adjustment tube (24) away from the horizontal tube (23), and the horizontal adjustment tube (24) is provided with a horizontal length scale (241), and the length scale (241) shows the distance from the center of the positioning seat plate (25) to the central axis of the vertical tube (22); The hole opening positioning assembly (3) includes a coring plate (31) and a coring sample punch (32); a coring hole (312) is opened on the coring plate (31), and the coring plate (31) is fixed on the positioning base plate (25), and the center of the coring hole (312) coincides with the center of the positioning base plate (25); the coring sample punch (32) can be sleeved in the coring hole (312) and move vertically up and down along the central axis of the coring hole (312), and the tip of the coring sample punch (32) always falls on the central axis of the coring hole (312).

2. The device for welding short pipe openings in the bottom plate of a ship linear area according to claim 1 is characterized in that: It also includes a hole-opening and marking assembly (4), which is sleeved on the coring plate (31) through the coring hole (312); the hole-opening and marking assembly (4) includes a positioning rod (41), a horizontal telescopic rod (42), and a limiting pen sleeve (43) for sleeved on the marking pen (5); The upper end of the positioning rod (41) can be sleeved in the core hole (312) and can move vertically up and down along the central axis of the core hole (312); the center of the lower end of the positioning rod (41) is a pointed tip, and the pointed tip always falls on the central axis of the core hole (312); One end of the horizontal telescopic rod (42) is vertically fixed to the positioning rod (41), and the other end of the horizontal telescopic rod (42) is fixed to a limiting pen sleeve (43), the central axis of the limiting pen sleeve (43) and the central axis of the core sampling hole (312) are parallel to each other, and a horizontal radius scale (421) is provided on the horizontal telescopic rod (42) and the telescopic length is locked by a fastener, and the radius scale (421) displays the distance from the central axis of the limiting pen sleeve (43) to the central axis of the core sampling hole (312); The marking pen (5) can be sleeved in the limiting pen sleeve (43) and can move vertically up and down along the central axis of the limiting pen sleeve (43).

3. A method for welding short pipe openings in the bottom plate of a ship's linear area, characterized in that: The following steps are involved: S1. Prepare the device according to any one of claims 1 or 2; S2. According to the coordinates of the center of the opening on the drawing, the controllable magnet base (21) is installed on the bottom plate at the center line (13) of the ship, and the direction of the horizontal tube (23) and the length of the horizontal adjustment tube (24) are adjusted so that the projection of the center of the positioning base plate (25) falls on the center of the opening; S3, installing the hole positioning assembly (3) on the positioning base plate (25), and placing the core sample punch (32) in the core hole (312), forming a positioning recess at the center of the hole on the bottom plate by knocking the core sample punch (32), and removing the core sample punch (32) to complete the positioning of the hole center; S4. According to the diameter of the hole center on the drawing, the hole line is drawn with the positioning recess as the center of the circle.

4. A method for welding short pipe openings in the bottom plate of a ship linear area according to claim 3, characterized in that: The specific steps in step S2 include: S2-1. According to the coordinates (X, Y) of the center of the opening on the drawing, the X value is the rib number of the center of the opening, and the Y value is the distance from the center of the opening to the center line (13) of the ship, the controllable magnet base (21) is fixed to the bottom plate by magnetic attraction, and the center of the controllable magnet base (21) is located at the intersection of the center line (13) of the bottom plate and the rib numbered with the X value; S2-2, at the same time, adjusting the direction of the horizontal tube (23) so that the direction of the horizontal tube (23) coincides with the direction of the rib where the center of the opening is located; S2-3. Adjust the length of the horizontal adjustment tube (24) and lock it after the length scale (241) shows the Y value.

5. The method for welding short pipe openings in the bottom plate of a ship linear area according to claim 3 is characterized in that: The device in step S1 further includes a level meter (233), which is arranged on the level tube (23). In step S2, the level meter (233) is used to monitor the levelness.

6. The method for welding short pipe openings in the bottom plate of a ship linear area according to claim 3, characterized in that: The positioning seat plate (25) is provided with a positioning groove (251), and the lower end surface of the coring plate (31) is provided with a positioning protrusion (311) matching the positioning groove (251). The specific steps of step S3 include: fixing the coring plate (31) in the positioning groove (251) of the positioning seat plate (25) through the positioning protrusion (311), placing the coring sample punch (32) in the coring hole (312) of the coring plate (31), adjusting the height of the horizontal tube (23) so that the upper end surface of the coring sample punch (32) is higher than the upper end surface of the coring plate (31), knocking the coring sample punch (32) to form a positioning recess on the bottom plate, and then taking out the coring sample punch (32).

7. The method for welding short pipe openings in the bottom plate of a ship linear area according to claim 3, characterized in that: When the device prepared in step S1 is the device as claimed in claim 1, step S4 comprises the following steps: according to the diameter of the center of the opening on the drawing, with the positioning recess as the center of the circle, using a compass to make a preliminary line and completing the drawing of the opening line through correction; When the device prepared in step S1 is the device as claimed in claim 2, step S4 includes the following steps: according to the diameter of the center of the opening on the drawing, the telescopic length of the horizontal telescopic rod (42) is adjusted to half of the diameter of the opening and locked, the upper end of the positioning rod (41) is placed in the core hole (312), the lower end of the positioning rod (41) is placed on the positioning recess, and then the opening line is drawn by using a marking pen (5) set in the limit pen sleeve (43).

8. The method for welding short pipe openings in the bottom plate of a ship linear area according to claim 7, characterized in that: When the device prepared in step S1 is the device as claimed in claim 2, the step of completing the drawing of the opening line by using the marking pen (5) set in the limiting pen sleeve (43) in step S4 includes: placing the marking pen (5) in the limiting pen sleeve (43), lightly pressing the upper end of the marking pen (5) with a finger to draw the line, so that the marking pen (5) moves up and down along the line of the base plate to fit the curved surface of the base plate, and draws the opening line.

9. The method for welding short pipe openings in the bottom plate of a ship linear area according to claim 8, characterized in that: The step of completing the drawing of the opening line by using the marking pen (5) sleeved in the limiting pen sleeve (43) further includes: selecting a suitable length of the marking pen (5) to ensure that when the marking pen (5) is in contact with the lowest point of the bottom plate curved surface, the upper end surface of the marking pen (5) is higher than the upper end surface of the limiting pen sleeve (43).

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