Adjustable cushion block and method for controlling longitudinal welding deformation of deck

Abstract

The invention discloses an adjustable cushion block for controlling longitudinal welding deformation of a deck, the adjustable cushion block is of a box body structure, a square opening is formed in the upper surface of the box body structure, a step is arranged at the position, close to the square opening, of the box body structure, a plurality of bolt holes are evenly distributed in the step, and the bolt holes are connected with the square opening through bolts. The flange sealing ring is fixed to the box body structure through bolts penetrating through the bolt holes, the side, away from the step, of the flange sealing ring is flush with the upper surface of the box body structure, the other side of the flange sealing ring is lower than the upper surface of the box body so that the tops of the bolts do not exceed the upper surface of the box pasting structure, and the flange sealing ring is of a square frame structure. A cushion block structure capable of moving up and down is arranged in the middle space of the flange sealing ring; the invention further discloses a method for controlling longitudinal welding deformation of the deck. The problem of inward concave deformation of the longitudinal welding seam in the continuous carrying stage can be effectively solved, installation is convenient and safe, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the field of shipbuilding, and in particular to an adjustable pad and method for controlling longitudinal welding deformation of a deck. Background Art

[0002] During shipbuilding, the longitudinal welds are long and the spacing between components is large, resulting in the greatest cumulative stress during welding. During the docking phase, the longitudinal welds are free ends, and a single continuous weld can be two to three times the length of the segment, approximately 50 to 60 meters. During welding, the steel plate melts and, under the influence of gravity, experiences regular localized sagging deformation, concentrated in the narrowest areas of the weld. Conventional processes involve adding CO2 plates and dressing plates on both sides of the weld, but this only prevents longitudinal wave deformation, not inward concavity. This is especially true during the docking phase, where concavity can cause accumulation of liquid in the cargo tank, dew, or rainfall. This is especially true during sea voyages, where the air is rich in salt and humidity can penetrate the welds, causing corrosion and impacting the vessel's service life. Summary of the Invention

[0003] In order to solve the deficiencies in the above-mentioned prior art, the present application provides an adjustable pad and method for controlling the longitudinal welding deformation of the deck, which can not only effectively solve the problem of concave deformation of the longitudinal weld during the continuous loading stage, but also is easy and safe to install, effectively improving work efficiency.

[0004] In order to achieve the above-mentioned invention objectives, this application provides the following technical solutions:

[0005] A kind of adjustable pad for controlling the longitudinal welding deformation of the deck, the adjustable pad is a box structure, the upper surface of the box structure is provided with a square opening, the box structure is provided with a step near the square opening, a number of bolt holes are evenly distributed on the step, a flange sealing ring is fixed to the box structure by bolts passing through the bolt holes, the side of the flange sealing ring away from the step is flush with the upper surface of the box structure, and the other side of the flange sealing ring is lower than the upper surface of the box so that the top of the bolt does not exceed the upper surface of the box structure, the flange sealing ring is a square frame structure, and a pad structure that can move up and down is provided in the middle space of the flange sealing ring, and there is a gap between the pad structure and the flange sealing ring, and the gap ensures that the pad structure does not tilt when moving up and down.

[0006] Furthermore, the pad structure includes a wedge-shaped pad and a height adjustment mechanism, the upper surface of the wedge-shaped pad is a plane, and the lower surface is an inclined surface, and the height adjustment mechanism is arranged below the wedge-shaped pad, and the height adjustment mechanism includes an adjusting rod, a connecting rod and several parallel end ball adjusting rods, the end ball adjusting rod includes a fixed end, a movable end, a slider and a slide groove, the fixed end includes a rotating shaft, the rotating shaft is vertically fixed to the upper surface of the bottom of the box, the end ball connecting rod can rotate in a plane parallel to the upper surface of the bottom of the box with the rotating shaft as the center of the circle, the movable end includes an end ball, the end ball is fixed to the end of the end ball adjusting rod opposite to the fixed end and can rotate and roll by itself, a slide groove arranged along the extension direction is provided in the middle of the end ball adjusting rod, a slider is provided in the slide groove, the connecting rod is connected to several sliders, one end of the connecting rod is hinged to one end of the adjusting rod, and the other end of the adjusting rod is placed in the arc gear groove and can slide along the arc gear groove, and the arc gear groove is provided with several gears.

[0007] Furthermore, a folding handle is provided at one end of the adjusting rod that slides in the arc-shaped gear slot, and a card slot and n equally spaced handle buckles are provided on the outer arc surface of the arc-shaped gear slot. The distance between the card slot and the nearest handle buckle is equal to the interval between the handle buckles, and the card slot is located at the end of the arc-shaped gear slot that is closest to the end ball.

[0008] Furthermore, the outer dimensions of the box structure are length*width*height of 540 mm*205 mm*50 mm, the thickness of the upper plate of the box structure is 6 mm, the height difference of the upper surface of the flange sealing ring is 2 mm, the diameter of the end ball is 20 mm, the length*width of the sliding groove is 53 mm*14 mm, the arc length of the arc-shaped gear groove is 139 mm, and the width is 6 mm. The number of handle buckles is 5, and the interval between the handle buckles is 24 mm.

[0009] The present invention also provides a method for controlling longitudinal welding deformation of a deck, using an adjustable spacer for controlling longitudinal welding deformation of the deck, the method comprising the following steps:

[0010] Step 1: During the general assembly or embarkation stage of the ship, before the assembly of the closing edges of the two sections begins, confirm the dimensions of the adjacent reinforcing structures on both sides of the weld, that is, the net height dimension between the profile and the deck surface, and confirm the total length of the weld to be controlled. Calculate the number of required adjustable pads according to the preset plan, configure the corresponding inner buckle card according to the adaptation of each adjustable pad to 4 inner buckle card plates, and draw the starting mark line and the position mark line of the adjustable pad; Step 2: When the ship is in the general assembly or embarkation stage, after the assembly of the closing edges of the two sections is completed, install the inner buckle card plates according to the position mark lines of the adjustable pads, and install the adjustable pads above the inner buckle card plates, and install them step by step from the middle position of the weld along the weld to both ends until all positions are installed;

[0011] Step 3: Before welding, level the weld from the middle to both ends.

[0012] Step 4: Raise the height of all adjustable pads until all adjustable pads support the lower surface of the deck;

[0013] Step 5: Perform backing welding on the weld seam, and after the backing welding is completed, check whether there is a gap between the upper surface of the pad structure and the lower surface of the deck. If there is a gap, repeat step 4 and perform the weld cap welding after the gap between the upper surface of the pad structure and the lower surface of the deck is eliminated;

[0014] Step 6. When all welds are completed, keep the adjustable pads unchanged until the welds are cooled to ensure the flatness of the welds. Then perform pyrotechnic back-burning on the frames on both sides of the deck welds. After the back-burning is completed, remove the adjustable pads and inner clips.

[0015] Furthermore, in step one, an adjustable spacer is provided at intervals of 60 mm along the weld.

[0016] Furthermore, in step 3, the flatness deviation of the entire weld after leveling does not exceed 5 mm. Compared with the prior art, the present invention has the following advantages: the present invention can effectively solve the problem of longitudinal weld concavity after welding. Compared with the existing process of performing large-area pyrotechnics on the deck surface, the present invention not only has better flatness control effect, but also has high construction efficiency and lower operator experience requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a top surface structural diagram of the adjustable pad of the present invention.

[0019] Figure 2 It is a schematic diagram of the working principle of the height adjustment mechanism of the adjustable pad of the present invention.

[0020] Figure 3 It is a cross-sectional structural diagram of the adjustable pad of the present invention.

[0021] Figure 4 It is a cross-sectional structural diagram of the arc-shaped shift groove of the adjustable pad of the present invention.

[0022] Figure 5 It is a schematic diagram of the use state of the adjustable pad of the present invention.

[0023] Figure 6 It is a partial enlarged view of the adjustable pad of the present invention.

[0024] Among them, the specific descriptions of the figure marks are as follows: box structure 1, flange sealing ring 2, connecting rod 3, end ball adjustment rod 4, adjustment rod 5, rotating shaft 6, wedge-shaped pad 7, folding handle 8, handle buckle 9, inner buckle plate 10, end ball 11. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of this application more clearly understood, the present application is described below using specific embodiments. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of this application. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of this application.

[0026] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms "a," "the," and "the" used in this disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items. It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms and should not be understood to indicate or imply relative importance. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when..." or "when..." or "in response to determining."

[0027] In the description of this application, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0028] A kind of adjustable pad for controlling the longitudinal welding deformation of the deck, the adjustable pad is a box structure 1, the upper surface of the box structure 1 is provided with a square opening, the box structure 1 is provided with a step near the square opening, a number of bolt holes are evenly distributed on the step, a flange sealing ring 2 is fixed to the box structure 1 by bolts passing through the bolt holes, the side of the flange sealing ring 2 away from the step is flush with the upper surface of the box structure 1, and the other side of the flange sealing ring 2 is lower than the upper surface of the box so that the top of the bolt does not exceed the upper surface of the box structure. The flange sealing ring 2 is a square frame structure, and a pad structure that can move up and down is provided in the middle space of the flange sealing ring 2, and there is a gap between the pad structure and the flange sealing ring 2, which ensures that the pad structure does not tilt when moving up and down.

[0029] Furthermore, the pad structure includes a wedge-shaped pad 7 and a height adjustment mechanism. The upper surface of the wedge-shaped pad 7 is a plane and the lower surface is an inclined surface. The height adjustment mechanism is arranged below the wedge-shaped pad 7. The height adjustment mechanism includes an adjusting rod 5, a connecting rod 3 and a plurality of parallel end ball adjustment rods 4. The end ball adjustment rod 4 includes a fixed end, a movable end, a slider and a slide groove. The fixed end includes a rotating shaft 6. The rotating shaft 6 is vertically fixed to the upper surface of the bottom of the box. The end ball 11 connecting rod 3 can be parallel to the rotating shaft 6 with the rotating shaft 6 as the center of the circle. It rotates in the plane of the upper surface of the bottom of the box. The movable end includes an end ball 11, which is fixed to the end of the end ball adjusting rod 4 opposite to the fixed end and can rotate and roll by itself. A slide groove is provided in the middle of the end ball adjusting rod 4 along the extension direction. A slider is provided in the slide groove. The connecting rod 3 is connected to several of the sliders. One end of the connecting rod 3 is hinged to one end of the adjusting rod 5. The other end of the adjusting rod 5 is placed in the arc gear groove and can slide along the arc gear groove. The arc gear groove is provided with several gears.

[0030] Furthermore, a folding handle 8 is provided at one end of the adjusting rod 5 that slides in the arc-shaped gear slot, and a card slot and n equally spaced handle buckles 9 are provided on the outer arc surface of the arc-shaped gear slot. The distance between the card slot and the nearest handle buckle 9 is equal to the interval between the handle buckles 9, and the card slot is located at the end of the arc-shaped gear slot that is closest to the end ball 11.

[0031] Furthermore, the outer dimensions of the box structure 1 are length * width * height of 540 mm * 205 mm * 50 mm, the thickness of the upper plate of the box structure 1 is 6 mm, the height difference of the upper surface of the flange sealing ring 2 is 2 mm, the diameter of the end ball 11 is 20 mm, the length * width of the sliding groove is 53 mm * 14 mm, the arc length of the arc-shaped gear groove is 139 mm, and the width is 6 mm. The number of the handle buckles 9 is 5, and the interval between the handle buckles 9 is 24 mm.

[0032] like Figure 1 As shown, a groove structure is formed between the flange sealing ring 2 and the upper surface of the box body, and the bolts are located in the groove structure so that the top of the bolts after being fixed will not exceed the upper surface of the box body and cause any impact. Figure 6 As shown, in order to make the connection between the flange sealing ring 2 and the box structure 1 more stable, a stepped structure matching the step is provided on the flange sealing ring 2. The arrangement of the flange sealing ring 2 makes it more convenient and quick to disassemble and assemble the wedge-shaped pad 7. Figure 2 and Figure 3 As shown, the working process of the height adjustment mechanism is as follows: by folding the handle 8, the adjustment rod 5 slides in the arc-shaped gear slot, driving the connecting rod 3 to generate displacement, thereby driving the slider to move along the slide slot, and then the end ball adjustment rod 4 rotates with the rotation axis 6 as the center of the circle, so that the lateral position of the end ball 11 after the arc movement gradually approaches the rotation axis 6. Since the bottom of the wedge-shaped pad 7 is an inclined surface, the overall height of the wedge-shaped pad 7 is increased, thereby achieving height adjustment. After the height adjustment is completed, the folding handle 8 is fixed by the handle buckle 9. Figure 4 The figure shows the gear setting of the arc-shaped gear slot, which is divided into 5 gears from 0 to 5 by five handle buckles 9. When adjusting, the adjustment rod 5 is moved in the arc-shaped gear slot by folding the handle 8. To facilitate movement, a rotating ball can be provided at the contact portion between the adjustment rod 5 and the arc-shaped gear slot. When the adjustment rod 5 moves to the specified position in the arc-shaped gear slot, that is, the top of the wedge-shaped pad 7 is tightly fitted with the lower surface of the deck, the folding rod on the folding handle is opened and locked on the corresponding handle buckle 9. When it needs to be removed, the folding rod can be removed from the handle buckle 9 by rotating it again to release the limit. The cooperation between the folding handle 8 and the handle buckle 9 is a common limit form, and the specific structure will not be described here.

[0033] like Figure 5 As shown, an inner clip 10 is provided at each of the four corners of the lower surface of the adjustable pad. The inner clip 10 is used to be installed on the profile adjacent to the weld, serving as the base plate of the adjustable pad. The length of the inner clip 10 is 100 mm, and the thickness of the inner clip 10 is 6 mm. The height dimension of the inner clip 10 is calculated based on the net height dimension between the profile and the deck surface. An R20 cut-corner arc is provided at the outer bottom corner of the inner clip 10.

[0034] The present invention also provides a method for controlling longitudinal welding deformation of a deck, using an adjustable spacer for controlling longitudinal welding deformation of the deck, the method comprising the following steps:

[0035] Step 1: During the ship assembly or loading phase, before the assembly of the closing edges of the two segments begins, confirm the dimensions of the adjacent reinforcement structures on both sides of the weld, that is, the net height between the profile and the deck surface, and confirm the total length of the weld to be controlled. Calculate the number of required adjustable spacers according to the preset plan, configure the corresponding inner buckle plates 10 according to the four inner buckle plates 10 that fit each adjustable spacer, and draw the starting mark line and the position mark line of the adjustable spacer.

[0036] Step 2: When the ship is in the general assembly or loading stage, after the assembly of the two sections is completed, the inner buckle plate 10 is installed according to the position mark line of the adjustable spacer, and the adjustable spacer is installed above the inner buckle plate, starting from the middle position of the weld and gradually installing along the weld to both ends until all positions are fully installed;

[0037] Step 3: Before welding, level the weld from the middle to both ends.

[0038] Step 4: Raise the height of all adjustable pads until all adjustable pads support the lower surface of the deck;

[0039] Step 5: Perform backing welding on the weld seam, and after the backing welding is completed, check whether there is a gap between the upper surface of the pad structure and the lower surface of the deck. If there is a gap, repeat step 4 and perform the weld cap welding after the gap between the upper surface of the pad structure and the lower surface of the deck is eliminated;

[0040] Step 6. After all the welding of the welds is completed, keep the adjustable pads unchanged until the welds are cooled to achieve weld flatness and shape preservation, then perform pyrotechnic back-burning on the structures on both sides of the deck surface welds. After the back-burning is completed, remove the adjustable pads and the inner buckle plate 10.

[0041] Furthermore, in step one, an adjustable spacer is provided at intervals of 60 mm along the weld.

[0042] Furthermore, in step three, the flatness deviation of the entire weld after leveling does not exceed 5 mm. Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can be made to the specific implementation methods of the application or that some technical features can be replaced with equivalents without departing from the spirit of the technical solution of this application. Such modifications should be included within the scope of the technical solution claimed for protection in this application.

Claims

1. An adjustable spacer for controlling longitudinal welding deformation of a deck, characterized in that: The adjustable gasket is a box structure, and a square opening is provided on the upper surface of the box structure. The box structure is provided with a step near the square opening, and a number of bolt holes are evenly distributed on the step. The flange sealing ring is fixed to the box structure by bolts passing through the bolt holes. The side of the flange sealing ring away from the step is flush with the upper surface of the box structure, and the other side of the flange sealing ring is lower than the upper surface of the box so that the top of the bolt does not exceed the upper surface of the box structure. The flange sealing ring is a square frame structure, and a gasket structure that can move up and down is provided in the middle space of the flange sealing ring. There is a gap between the gasket structure and the flange sealing ring. The gap ensures that the gasket structure does not tilt when moving up and down.

2. The adjustable spacer for controlling longitudinal welding deformation of a deck according to claim 1, characterized in that: The pad structure includes a wedge-shaped pad and a height adjustment mechanism, the upper surface of the wedge-shaped pad is a plane, and the lower surface is an inclined surface, and the height adjustment mechanism is arranged below the wedge-shaped pad, and the height adjustment mechanism includes an adjusting rod, a connecting rod and a plurality of parallel end ball adjusting rods, the end ball adjusting rod includes a fixed end, a movable end, a slider and a slide groove, the fixed end includes a rotating shaft, the rotating shaft is vertically fixed to the upper surface of the bottom of the box, the end ball connecting rod can rotate in a plane parallel to the upper surface of the bottom of the box with the rotating shaft as the center of a circle, the movable end includes an end ball, the end ball is fixed to the end of the end ball adjusting rod opposite to the fixed end and can rotate and roll by itself, a slide groove arranged along the extension direction is provided in the middle part of the end ball adjusting rod, a slide groove is provided in the slide groove, the connecting rod is connected to the plurality of slide blocks, one end of the connecting rod is hinged to one end of the adjusting rod, and the other end of the adjusting rod is placed in the arc gear groove and can slide along the arc gear groove, and the arc gear groove is provided with a plurality of gears.

3. The adjustable spacer for controlling longitudinal welding deformation of a deck according to claim 2, characterized in that: A folding handle is provided at one end of the adjusting rod that slides in the arc-shaped gear slot. A card slot and n equally spaced handle buckles are provided on the outer arc surface of the arc-shaped gear slot. The distance between the card slot and the nearest handle buckle is equal to the interval between the handle buckles. The card slot is located at the end of the arc-shaped gear slot that is farthest from the end ball.

4. The adjustable spacer for controlling longitudinal welding deformation of a deck according to claim 3, characterized in that: The outer dimensions of the box structure are length*width*height of 540 mm*205 mm*50 mm, the thickness of the upper plate of the box structure is 6 mm, the height difference of the upper surface of the flange sealing ring is 2 mm, the diameter of the end ball is 20 mm, the length*width of the sliding groove is 53 mm*14 mm, the arc length of the arc-shaped gear groove is 139 mm, and the width is 6 mm. The number of handle buckles is 5, and the interval between the handle buckles is 24 mm.

5. A method for controlling longitudinal welding deformation of a deck, characterized in that: Utilizing the adjustable spacer for controlling longitudinal welding deformation of a deck as claimed in any one of claims 1 to 4, the method comprises the following steps: Step 1: During the ship assembly or loading phase, before the assembly of the closing edges of the two sections begins, confirm the dimensions of the adjacent reinforcement structures on both sides of the weld, that is, the net height between the profile and the deck surface, and confirm the total length of the weld to be controlled. Calculate the number of adjustable spacers required according to the preset plan, configure the corresponding inner buckle plates according to the four inner buckle plates that each adjustable spacer fits, and draw the starting mark line and the position mark line of the adjustable spacer. Step 2: When the ship is in the general assembly or loading stage, after the assembly of the two sections is completed, the inner buckle plate is installed according to the position mark line of the adjustable spacer, and the adjustable spacer is installed on the inner buckle plate, starting from the middle position of the weld and gradually installing along the weld to both ends until all positions are installed; Step 3: Before welding, level the weld from the middle to both ends. Step 4: Raise the height of all adjustable pads until all adjustable pads support the lower surface of the deck; Step 5: Perform backing welding on the weld seam, and after the backing welding is completed, check whether there is a gap between the upper surface of the pad structure and the lower surface of the deck. If there is a gap, repeat step 4 and perform the weld cap welding after the gap between the upper surface of the pad structure and the lower surface of the deck is eliminated; Step 6. When all welds are completed, keep the adjustable pads unchanged until the welds are cooled to ensure the flatness of the welds. Then perform pyrotechnic back-burning on the frames on both sides of the deck welds. After the back-burning is completed, remove the adjustable pads and inner clips.

6. A method for controlling longitudinal welding deformation of a deck according to claim 5, characterized in that: In step 1, an adjustable spacer is provided at intervals of 60 mm along the weld.

7. A method for controlling longitudinal welding deformation of a deck according to claim 5, characterized in that: In step three, the flatness deviation of the entire weld after leveling does not exceed 5 mm.

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