Auxiliary hull hot work correction tool and construction method

Abstract

The invention discloses an auxiliary hull fire work correction tool, belongs to the technical field of ship manufacturing, and solves the problem of inconvenience in hull fire work correction construction in the prior art. The device comprises a cross beam, a jack and two tensioning assemblies, each tensioning assembly comprises a pulling plate, a pressing plate and two clamping plates, electric heaters with adjustable positions are arranged on the two sides of an extruding plate, the two clamping plates are arranged on the lower portion of the pulling plate at intervals from bottom to top, at least two threaded rods arranged in parallel are arranged on the lower portion of the pulling plate, and the threaded rods are arranged on the two sides of the pulling plate. The screw rod penetrates through the two clamping plates and is in threaded connection with a locking nut, and the pressing plate is movably arranged on the screw rod between the clamping plates and the locking nut in a sleeving manner. The auxiliary ship body hot work correction tool is convenient to disassemble and assemble and can be repeatedly used, the construction efficiency is effectively improved, and the labor intensity is reduced. The invention further discloses an auxiliary hull hot work correction construction method, and the method can achieve rapid construction and meanwhile avoid damage to the hull.

Description

Technical Field

[0001] The invention relates to the technical field of shipbuilding, and more particularly to an auxiliary hull pyrotechnic correction tool and a construction method. Background Art

[0002] During the shipbuilding process, the hull will inevitably deform due to various reasons such as welding, and it is often necessary to correct the deformed hull due to welding, so correction is an indispensable type of work. There are currently two commonly used correction methods: mechanical correction and pyrotechnic correction. Due to the complexity of the hull structure, the deformation produced after the hull structure is welded can almost only be eliminated by pyrotechnic correction. In particular, small and medium-sized ships have thin hull plates and small structures, which produce multiple superimposed deformations such as distortion, wave deformation, and angular deformation. It is definitely not enough to rely solely on pure water and fire correction, and external forces are also needed for auxiliary correction. The current conventional auxiliary pyrotechnic correction method requires another type of work (assembler) to assist in using a welding horse plate plus a jack to push or pull the deformed position and then pyrotechnically finalize the correction, but this auxiliary method has the following problems:

[0003] 1. This method of welding and assembling the auxiliary construction process of the horse plate is complicated and time-consuming, and requires the assistance of another type of worker (assembler). It also requires the preparation of more equipment and tools (welding machine and welding clamp, welding wire, welding rod, insulation barrel, reinforcing bar, door horse bar, jack, oxygen and gas hose and cutting torch, wrench, etc.), and preparations before assisting the construction, etc. This type of auxiliary method requires a lot of manpower and material resources.

[0004] 2. After this method is used, spot welding is required for pushing or pulling, which will produce footing, resulting in poor quality and appearance, especially affecting the overall appearance of the hull plate. In addition, the footing position needs to be polished, welded, repaired, or even scraped for beautification. This method will waste a lot of materials, take a long construction period, and increase manufacturing costs.

[0005] Therefore, it is urgent to develop and design a new type of auxiliary hull pyrotechnic correction tool and construction method to solve the above-mentioned technical problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art. One purpose of the present invention is to provide an auxiliary hull pyrotechnic correction tool that is easy to assemble and disassemble and can be used repeatedly, thereby effectively improving construction efficiency and reducing labor intensity.

[0007] The second purpose of the present invention is to provide a method for auxiliary hull pyrotechnic correction construction, which cleverly utilizes the bulging parts of the hull structural steel ball head or the angle steel corner edge or the "T"-shaped panel as stress points to achieve rapid construction while avoiding damage to the hull.

[0008] In order to achieve the above-mentioned purpose one, the present invention provides an auxiliary hull pyrotechnic correction tool, including a crossbeam, a jack and two tensioning assemblies, the tensioning assembly including a pull plate, a clamping plate and two clamping plates, the two pull plates corresponding to the two tensioning assemblies are slidably mounted on the crossbeam, the jack is movably placed under the crossbeam between the two tensioning assemblies, and an extrusion plate is detachably installed on the output end of the jack, and position-adjustable electric heaters are provided on both sides of the extrusion plate, the two clamping plates are spaced apart from bottom to top at the lower part of the pull plate, and the lower part of the pull plate is provided with at least two parallelly arranged screws, the screw passes through the two clamping plates and is threadedly connected with a locking nut, and the clamping plate is movably mounted on the screw between the clamping plate and the locking nut.

[0009] As a further improvement, the electric heater is located above the bottom surface of the extrusion plate, and an adjustment mechanism for adjusting the distance between the electric heater and the extrusion plate is provided between the electric heater and the extrusion plate.

[0010] Furthermore, the adjustment mechanism includes a stud and a guide rod, one end of the guide rod is fixedly connected to the electric heater, and the other end is slidably inserted in the extrusion plate. One end of the stud is rotatably installed on the electric heater through a bearing, and the other end is threadedly connected to a thread groove provided in the extrusion plate.

[0011] Furthermore, the length of the lower card board is shorter than the length of the upper card board.

[0012] Furthermore, a backing plate is installed on the end surface of the lower clamping plate through a plurality of countersunk screws.

[0013] Furthermore, a card slot is provided in the middle of the card plate, and the width of the card slot corresponding to the upper card plate is smaller than the width of the card slot corresponding to the lower card plate.

[0014] Furthermore, the screw rod and the pull plate are threadedly connected, and a limiting nut is also threadedly connected to the screw rod on the side opposite to the clamping plate.

[0015] Furthermore, a handle is provided on the crossbeam.

[0016] In order to achieve the above-mentioned second objective, the present invention provides a method for auxiliary hull pyrotechnic correction construction, including the above-mentioned auxiliary hull pyrotechnic correction tool, and the method comprises the following steps:

[0017] S1. Put the two tension plates corresponding to the two tensioning components on the beam respectively;

[0018] S2, move the cross beam and the tensioning assembly to just above the deformed part of the hull;

[0019] S3, move the two pull plates corresponding to the two tensioning components so that the lower clamping plate on the pull plate is clamped into the angle steel of the hull;

[0020] S4. Put the clamping plate on the screw and tighten the locking nut to make the clamping plate and the clamping plate tightly bite on the angle steel;

[0021] S5. Place a jack under the beam between the two tensioning components so that the extrusion plate at the output end of the jack fits against the deformed part of the hull, and adjust the jack so that the top of the jack fits against the bottom of the beam;

[0022] S6, starting the electric heater to heat the hull, and adjusting the extension of the jack to squeeze the deformed part of the hull until the deformed part of the hull is squeezed flat;

[0023] S7. Remove the tensioning assembly from the hull and move it away to complete the pyrotechnic correction of the hull.

[0024] Furthermore, the step S6 comprises the following steps:

[0025] S6.1. Start the electric heater to heat the hull until it turns red;

[0026] S6.2. Turn off the electric heater, stop heating the hull, adjust the extension of the jack, squeeze the deformed part of the hull, stop after the jack is extended by 2mm, and keep it still until the hull turns gray, then adjust the electric heater to move closer to the extrusion plate;

[0027] S6.3. Repeat steps S6.1 and S6.2 until the deformed part of the hull is squeezed flat.

[0028] Beneficial Effects

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] 1. The auxiliary hull pyrotechnic correction tool of the present invention adopts a movable pulling plate and a pressing plate structure, which can quickly and effectively clamp various hull structures, has a good clamping effect, better provides force points, is more flexible to use, and has a certain height adjustment between the clamping plates and a certain length adjustment of the screw rod, which is convenient for positioning and installation of the pulling plate. After the construction is completed, the tensioning assembly can be quickly removed, and the disassembly and assembly are convenient and can be used repeatedly, which effectively improves the construction efficiency and reduces the labor intensity.

[0031] 2. The auxiliary hull pyrotechnic correction construction method of the present invention cleverly utilizes the bulging parts of the hull structural steel ball head or the angle steel corner edge or the "T"-shaped panel as the stress points, thereby achieving rapid construction while avoiding damage to the hull. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1It is a schematic diagram of the main structure of the present invention;

[0033] Figure 2 It is an enlarged schematic diagram of the main structure of the tensioning assembly in the present invention;

[0034] Figure 3 It is an enlarged schematic diagram of the side structure of the pull plate in the present invention;

[0035] Figure 4 It is an enlarged schematic diagram of the top view structure of the extruded plate in the present invention;

[0036] Figure 5 It is a schematic diagram of the structure enlargement when the present invention is applied.

[0037] Among them: 1-beam, 2-jack, 3-tensioning assembly, 4-extrusion plate, 5-electric heater, 6-screw, 7-locking nut, 8-stud, 9-guide rod, 10-pad, 11-slot, 12-limiting nut, 13-handle, 14-hull, 15-angle steel, 31-pull plate, 32-pressure plate, 33-card plate. DETAILED DESCRIPTION

[0038] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0039] See also Figure 1-5 The present invention provides an auxiliary hull pyrotechnic correction tool, comprising a crossbeam 1, a jack 2 and two tensioning assemblies 3, wherein the tensioning assembly 3 comprises a pulling plate 31, a pressing plate 32 and two clamping plates 33, and the two pulling plates 31 corresponding to the two tensioning assemblies 3 are slidably mounted on the crossbeam 1, so that the distance between the two tensioning assemblies 3 is adjustable, so as to be suitable for clamping different hull structures, and the jack 2 is movably placed under the crossbeam 1 between the two tensioning assemblies 3 for easy movement, and an extrusion plate 4 is detachably installed at the output end of the jack 2, specifically, the extrusion plate 4 can be connected to the output end of the jack 2 by a countersunk screw, so as to facilitate disassembly and maintenance, and position-adjustable electric heaters 5 are arranged on both sides of the extrusion plate 4, and the position-adjustable electric heater 5 can heat different positions of the hull, and the electric heater 5 is a heater used for heating steel plates in the prior art, such as: an electromagnetic induction heater, an electric heating tube heater, an infrared heater, etc. Two clamping plates 33 are spaced apart from bottom to top at the lower part of the pulling plate 31 to accommodate the angle steel 15 or steel ball head and other components of the hull 14, ensuring that the tensioning assembly 3 can be clamped. At least two parallel arranged screws 6 are provided at the lower part of the pulling plate 31. The screw 6 is vertically arranged to the pulling plate 31. The screw 6 passes through the two clamping plates 33 and is threadedly connected with a locking nut 7. The clamping plate 32 is movably sleeved on the screw 6 between the clamping plate 33 and the locking nut 7, and the distance between the clamping plate 32 and the clamping plate 33 can be adjusted at any time.

[0040] The auxiliary hull pyrotechnic correction tool of the invention adopts a movable pulling plate 31 and a clamping plate 32 structure, which can quickly and effectively clamp various hull structures, has a good clamping effect, better provides force points, and is more flexible to use. There is a certain height adjustment between the clamping plates 33, and a certain length adjustment of the screw 6, which is convenient for positioning and installation of the pulling plate 31. After the construction is completed, the tensioning assembly 3 can be quickly removed, and it is easy to disassemble and assemble and can be used repeatedly, which effectively improves construction efficiency and reduces labor intensity.

[0041] Preferably, the electric heater 5 is located above the bottom surface of the extrusion plate 4 to avoid the problem of damage caused by the extrusion force acting on the electric heater 5, and an adjustment mechanism for adjusting the distance between the electric heater 5 and the extrusion plate 4 is provided between the electric heater 5 and the extrusion plate 4, so that the position of the electric heater 5 can be adjusted. Specifically, the adjustment mechanism includes a stud 8 and a guide rod 9, wherein one end of the guide rod 9 is fixedly connected to the electric heater 5, and the other end is slidably inserted in the extrusion plate 4, one end of the stud 8 is rotatably mounted on the electric heater 5 through a bearing, and the other end is threadedly connected to the thread groove provided in the extrusion plate 4, and a hexagonal block is provided in the middle position of the stud 8 to facilitate the rotation of the stud 8. When used, the stud 8 is rotated, and the stud 8 extends into the extrusion plate 4, so that the electric heater 5 can be driven to approach one side of the extrusion plate 4, so as to adjust the distance between the electric heater 5 and the extrusion plate 4. Among them, the guide rod 9 plays a guiding role to prevent the electric heater 5 from rotating.

[0042] Preferably, the length of the lower clamping plate 33 is less than that of the upper clamping plate 33, so that the lower clamping plate 33 can fit on the inner wall of the angle steel 15 of the hull 14, effectively improving the clamping stability. Furthermore, the end surface of the lower clamping plate 33 is also mounted with a backing plate 10 through a plurality of countersunk screws. In actual application, the backing plate 10 can be added to ensure that the backing plate 10 can fit on the inner wall of the angle steel 15, thereby achieving the clamping of angle steels of different thicknesses, and having a wider range of applications.

[0043] Preferably, a slot 11 is further provided in the middle position of the clamping plate 33. When the component on the top of the hull 14 is a steel ball head or a "T"-shaped part, the steel ball head or the "T"-shaped part can pass through the slot 11 and be clamped on the clamping plate 33, and clamping and fixing can also be achieved. The width of the slot 11 corresponding to the upper clamping plate 33 is smaller than the width of the slot 11 corresponding to the lower clamping plate 33, and can be suitable for steel ball heads or "T"-shaped parts of different widths, and has a wider range of applications.

[0044] Preferably, the screw rod 6 and the pull plate 31 are threadedly connected to facilitate disassembly and maintenance, and a limit nut 12 is threadedly connected to the screw rod 6 on the side opposite to the clamping plate 33 to prevent the screw rod 6 from loosening. In this embodiment, when encountering a lifting lug on the top of the hull 14, a bolt can also be used to pass through the lifting lug and threadedly connected to the threaded hole of the pull plate 31 corresponding to the screw rod 6, and clamping and fixing can also be achieved, which has a wider range of applications.

[0045] Preferably, a handle 13 is also provided on the crossbeam 1 to facilitate moving the crossbeam 1 and the tensioning assembly 3 .

[0046] An auxiliary hull pyrotechnic correction construction method includes the above-mentioned auxiliary hull pyrotechnic correction tool, and the method includes the following steps:

[0047] S1, respectively put the two pull plates 31 corresponding to the two tensioning components 3 on the crossbeam 1;

[0048] S2, move the cross beam 1 and the tensioning assembly 3 to just above the deformed part of the hull 14;

[0049] S3, move the two pull plates 31 corresponding to the two tensioning components 3, so that the lower clamping plate 33 on the pull plate 31 is clamped into the angle steel 15 of the hull 14;

[0050] S4, put the clamping plate 32 on the screw rod 6, and tighten the locking nut 7, so that the clamping plate 33 and the clamping plate 32 are tightly engaged with the angle steel 15;

[0051] S5. Place the jack 2 under the beam 1 between the two tensioning components 3, so that the extrusion plate 4 at the output end of the jack 2 fits the deformed part of the hull 14, and adjust the jack 2 so that the top of the jack 2 fits the bottom of the beam 1;

[0052] S6, start the electric heater 5 to heat the hull 1, and adjust the extension of the jack 2 to squeeze the deformed part of the hull 14 until the deformed part of the hull 14 is squeezed flat;

[0053] S7, dismantle the tensioning assembly 3 from the hull 14 and remove it, completing the pyrotechnic correction of the hull.

[0054] Wherein, step S6 comprises the following steps:

[0055] S6.1, start the electric heater 5, and start heating the hull 14 until the hull 14 turns red, and the hull 14 turns red means that the hull 14 is heated to between 600° C. and 1000° C.;

[0056] S6.2, turn off the electric heater 5, stop heating the hull 14, adjust the extension of the jack 2, squeeze the deformed part of the hull 14, stop after the jack 2 is extended by 2mm, and keep it still until the hull 14 turns gray. The graying of the hull 14 means that the hull 14 is cooled to below 100°C, and the electric heater 5 is adjusted to move closer to the extrusion plate 4; the method of heating and then extruding is adopted, so that the deformed part of the hull 14 is easier to be squeezed and restored to flatness, and at the same time, the method of extruding 2mm each time and the heating position of the hull 14 is close to the deformed part each time can make the structural strength of the hull 14 better after extrusion;

[0057] S6.3, repeat steps S6.1 and S6.2 until the deformed part of the hull 14 is squeezed flat.

[0058] The auxiliary hull pyrotechnic correction construction method of the present invention cleverly utilizes the bulging parts of the hull structural steel ball head or the angle steel corner edge or the "T"-shaped member panel as stress points, thereby achieving rapid construction while avoiding damage to the hull.

[0059] The above are only preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A hull pyrotechnic correction tool, characterized in that: The invention comprises a crossbeam (1), a jack (2) and two tensioning assemblies (3), wherein the tensioning assembly (3) comprises a pulling plate (31), a pressing plate (32) and two clamping plates (33), and the two pulling plates (31) corresponding to the two tensioning assemblies (3) are both slidably mounted on the crossbeam (1), the jack (2) is movably placed under the crossbeam (1) between the two tensioning assemblies (3), and an extrusion plate (4) is detachably mounted on the output end of the jack (2). Both sides of the extrusion plate (4) are provided with electric heaters (5) with adjustable positions. The two clamping plates (33) are arranged at intervals from bottom to top at the lower part of the pull plate (31). The lower part of the pull plate (31) is provided with at least two screw rods (6) arranged in parallel. The screw rod (6) passes through the two clamping plates (33) and is threadedly connected with a locking nut (7). The clamping plate (32) is movably sleeved on the screw rod (6) between the clamping plate (33) and the locking nut (7).

2. The auxiliary hull pyrotechnic correction tool according to claim 1, characterized in that: The electric heater (5) is located above the bottom surface of the extrusion plate (4), and an adjustment mechanism for adjusting the distance between the electric heater (5) and the extrusion plate (4) is provided between the electric heater (5) and the extrusion plate (4).

3. The auxiliary hull pyrotechnic correction tool according to claim 2, characterized in that: The adjustment mechanism comprises a stud (8) and a guide rod (9), one end of the guide rod (9) is fixedly connected to the electric heater (5), and the other end is slidably inserted into the extrusion plate (4); one end of the stud (8) is rotatably mounted on the electric heater (5) through a bearing, and the other end is threadedly connected to a thread groove provided on the extrusion plate (4).

4. The auxiliary hull pyrotechnic correction tool according to claim 1, characterized in that: The length of the lower clamping plate (33) is shorter than the length of the upper clamping plate (33).

5. The auxiliary hull pyrotechnic correction tool according to claim 4, characterized in that: A backing plate (10) is also mounted on the end surface of the lower clamping plate (33) via a plurality of countersunk screws.

6. The auxiliary hull pyrotechnic correction tool according to claim 1, characterized in that: A card slot (11) is also provided in the middle of the card plate (33), and the width of the card slot (11) corresponding to the upper card plate (33) is smaller than the width of the card slot (11) corresponding to the lower card plate (33).

7. The auxiliary hull pyrotechnic correction tool according to claim 1, characterized in that: The screw rod (6) and the pull plate (31) are threadedly connected, and a limit nut (12) is also threadedly connected to the screw rod (6) on the side opposite to the clamping plate (33).

8. The auxiliary hull pyrotechnic correction tool according to any one of claims 1 to 7, characterized in that: The crossbeam (1) is also provided with a handle (13).

9. A method for auxiliary hull pyrotechnic correction construction, characterized in that: The method comprises the auxiliary hull pyrotechnic correction tool as claimed in claim 8, and the method comprises the following steps: S1, respectively sleeve the two pull plates (31) corresponding to the two tensioning assemblies (3) onto the crossbeam (1); S2, moving the cross beam (1) and the tensioning assembly (3) to the position directly above the deformed portion of the hull (14); S3, moving the two pull plates (31) corresponding to the two tensioning components (3) so that the lower clamping plate (33) on the pull plate (31) is clamped into the angle steel (15) of the hull (14); S4. Slip the clamping plate (32) onto the screw rod (6) and tighten the locking nut (7) so that the clamping plate (33) and the clamping plate (32) are tightly engaged with the angle steel (15); S5. Place a jack (2) under the crossbeam (1) between the two tensioning assemblies (3) so that the extrusion plate (4) at the output end of the jack (2) fits against the deformed portion of the hull (14), and adjust the jack (2) so that the top of the jack (2) fits against the bottom of the crossbeam (1); S6, starting the electric heater (5) to heat the hull (1), and adjusting the extension of the jack (2) to squeeze the deformed part of the hull (14) until the deformed part of the hull (14) is squeezed flat; S7. Remove the tensioning assembly (3) from the hull (14) and move it away, completing the pyrotechnic correction of the hull.

10. The auxiliary hull pyrotechnic correction construction method according to claim 9, characterized in that: The step S6 comprises the following steps: S6.1, start the electric heater (5) to start heating the hull (14) until the hull (14) turns red; S6.2, turn off the electric heater (5), stop heating the hull (14), adjust the extension of the jack (2), squeeze the deformed part of the hull (14), stop the jack (2) after it extends 2 mm, and keep it still until the hull (14) turns gray, and adjust the electric heater (5) to move closer to the squeezing plate (4); S6.3, repeat steps S6.1 and S6.2 until the deformed part of the hull (14) is squeezed flat.

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