WO2009038282A1

WO2009038282A1 - Lug for vessel

Info

Publication number: WO2009038282A1
Application number: PCT/KR2008/004389
Authority: WO
Inventors: Young Jae Jung
Original assignee: SM T and D Co Ltd
Current assignee: SM T and D Co Ltd
Priority date: 2007-09-20
Filing date: 2008-07-28
Publication date: 2009-03-26
Anticipated expiration: 2010-03-20
Also published as: CN101801781A; KR100830188B1

Abstract

The present invention relates to a lug, particularly a lug for a vessel that is fastened to each of blocks, which are assembled for building the vessel, to be hung to a hook of a crane for easy transport.

Description

LUG FOR VESSEL

Technical Field

[1] The present invention relates to a lug, particularly a lug for a vessel that is fastened to each of blocks, which are assembled together for building the vessel, to be hung to a hook of a crane for easy transport. Background Art

[2] In general, in order to build a vessel, a plurality of large blocks for building the vessel is separately manufactured and then a mounting process for stacking and combining the blocks is performed to complete the vessel, in which a large crane is required for the mounting process of the large blocks.

[3] Therefore, connecting means for safely connecting the crane to the blocks for the vessel are needed to lift or move the blocks using the crane.

[4] That is, lugs are provided as much as needed at appropriate positions of each block to make the connecting means. Further, the lugs are separately manufactured and welded to needed positions and the hook of the crane is hooked to the lugs to carry the blocks.

[5] A general lug 1 for a vessel, as shown in FIG. 1, has a hooking hole 2 at the upper portion to insert the hook of the crane and a plurality of ribs 3 at both sides to prevent the lug 2 from separating from the block by the weight of the vessel.

[6] The lug 1 should be removed from the block after the mounting process of the blocks is finished to prevent damage to the blocks and workers from stumbling on the lug because it remains protruding.

[7] That is, the lug 1 welded to the block is removed by oxygen cutting with a portion having a length of 15 mm to 30 mm from the lower end remaining, thus, several finishing processes, such as milling, which machines the remaining portion of the lug 1 and removing the cutting oil and chips, are required.

[8] As described above, since the lug for a vessel in the related art should undergo several finishing processes, such as the oxygen cutting and milling, after being welded to the block, it is difficult to remove the lug. Accordingly, the coating of the block may be damaged and the lugs may be decreased in strength by changes in the structure of metal due to heat, and is difficult to reuse, thus resulting in increasing the cost of use. Disclosure of Invention

Technical Problem

[9] In order to overcome the above problems, an object of the invention is to provide a lug for a vessel that can be easily removed and reused without damaging the blocks of a vessel after being fastened and used in a mounting process of the blocks. Technical Solution

[10] In order to achieve the objects of the invention, a lug for a vessel according to the invention includes: a base support plate that is a plate combined with a vessel block and having supporting protrusions at both longitudinal sides; locking plates that are a pair of plates, each having a hooking hole where a hook of a crane is hooked and a support groove that corresponds to the support protrusion of the base support plate; and main fasteners that fasten a pair of the locking plates to be in contact with each other and keeps the support protrusion of the base plate and the support groove of the locking plate fastened to each other.

[11] Further, a plurality of vertical protrusions that are perpendicular to the support protrusion are formed at both sides of the base support plate and vertical grooves that correspond to the vertical protrusion are formed on the inner side of the locking plate.

[12] Further, it is preferable that the lug for a vessel further includes: sub-fixing plates, each of which has an n-shape having both ends bent downward and fixed to the vessel block by locking in the locking recesses of the locking plate; and locking-fixing bolts that are screwed in the fixing bolt insertion holes formed at the locking recesses of the locking plate to fix the sub-fixing plate locked in the locking recesses of the locking plate.

[13] Further, it is preferable that the lug for a vessel further includes sub-support plates each of which has a triangular shape where the locking-fixing bolt is screwed.

Advantageous Effects

[14] According to the lug for a vessel of the invention, as described, since it is easy to separate the locking plates that connect the hook of the crane with the vessel block from the base support plate that is combined with the vessel block after finishing mounting the vessel block by only unscrewing the main fasteners, the vessel block is not damaged and the locking plates can be reused. Brief Description of the Drawings

[15] FIG. 1 is a cross-sectional view showing a lug for a vessel in the related art.

[16] FIG. 2 is a view illustrating lugs for a vessel that are fastened, according to a preferred embodiment of the invention.

[17] FIG. 3 is a perspective view of a lug for a vessel according to a preferred embodiment of the invention.

[18] FIG. 4 is an exploded perspective view of FIG. 3.

[19] FIG. 5 is a front view of FIG. 3.

[20] FIGS. 6 to 8 are cross-sectional views illustrating connecting states of a base support plate and a locking plate shown in FIG. 4, which are different according to the shape of the base support plate and the locking plate. [21] FIG. 9 is an exploded perspective view of a lug for a vessel according to a second preferred embodiment of the invention.

[22] FIG. 10 is an exploded perspective view of a lug for a vessel according to a third preferred embodiment of the invention.

[23] FIG. 11 is an exploded perspective view of a lug for a vessel according to a fourth preferred embodiment of the invention.

[24] FIG. 12 is an exploded perspective view of a lug for a vessel according to a fifth preferred embodiment of the invention.

[25] FIG. 13 is a perspective view of a lug according to a preferred embodiment of the invention, equipped with a sub-support plate. Best Mode for Carrying Out the Invention

[26] Preferred embodiments of the invention are described hereafter in detail with reference to the accompanying drawings

[27] However, the terminology or words used herein and in the claims should not be limitedly construed as common or encyclopedic meanings, but should be construed as meanings and concept corresponding to the technical scope of the invention, on the basis of the fact that the inventor(s) can appropriately define the concept of the terminology with the best explanation of his (their) own invention.

[28] Therefore, it should be understood that a variety of equivalents and modifications that can be substituted for the embodiments described herein and the configuration shown in the drawings can be made at a point of time of this application because they are jut the most preferred embodiment of the invention and do not include all of the technical scope of the invention.

[29] FIG. 2 is a view illustrating lugs for a vessel that are fastened, according to a preferred embodiment of the invention, FIG. 3 is a perspective view of a lug for a vessel according to a preferred embodiment of the invention, FIG. 4 is an exploded perspective view of FIG. 3, and FIG. 5 is a front view of FIG. 3.

[30] As shown in the figures, a lug 100 for a vessel according to the invention includes a base support plate 200, locking plates 300, and main fasteners 400.

[31] The base support plate 200 is a plate member that is connected to a vessel block 10.

[32] In this embodiment, the base support plate 200 is a member that locks and supports the locking plates 300, which are described below, and it is preferable to weld the bottom of the base support plate 200 to the vessel block 10 to keep a stable connection to the vessel block 10.

[33] Supporting protrusions 210 are formed at both longitudinal sides of the base support plate 200 to lock the locking plates 300, which are described below.

[34] The locking plates 300 are a pair of members that are locked to face each other by the supporting protrusions 210 of the base support plate 200 while being in contact with each other.

[35] In this embodiment, a supporting groove 320 corresponding to the supporting protrusion 210 of the base support plate 200 is formed on each of the locking plates 300.

[36] Further, a hooking hole 310 in which the hook of a crane is hooked is formed at a side of the locking plate 300. Reference numeral '311' indicates a reinforcement member inserted in the hooking hole 310 to reinforce the hooking hole 310 and reference numeral '312' indicates insertion holes through which main fasteners 400, which are described below, are inserted.

[37] Therefore, the supporting grooves 320 of the locking plates 300 are fitted to the supporting protrusions 210 of the base support plate 200, such that a force that is exerted in the hook of the crane to lift the locking plates 300 is transmitted to the vessel block 10 through the support protrusions 210 of the base support plate 200, as a result the vessel block 10 is lifted and carried.

[38] The locking plates 300 preferably have an L-shape of which one end is bent upward such that they face each other with the support grooves 320 fitted to the supporting protrusions 210 of the base support plate 200.

[39] Further, a locking recess 330 where a fixing bolt insertion hole 331 for inserting a locking-fixing bolt 600 to fix a sub-fixing plate 500, which is described below, is formed at each of the lower corners of the locking plate 300.

[40] Further, ribs 340 that reinforce the strength are provided at the outer curved edge of each of the locking plates 300 to prevent the locking plate 300 from being damaged or deformed by the weight of the vessel block 20 while the vessel block 10 is carried with the hook of the crane hooked in the hooking hole 310 and the supporting groove 320 fitted to the supporting protrusion 210 of the base support plate 200.

[41] In this embodiment, it is possible to change the support protrusions 210 of the base support plate 200 and the supporting grooves 320 of the locking plate to have predetermined shapes that allows stably combining the base support plate 220 with the locking plates 300, as shown in FIGS. 6 to 8.

[42] Further, a welding space groove 350 may be formed at the inside lower portion of the locking plate 300 such that the supporting groove 320 of the locking plate 300 is completely fitted and contacts the support protrusions 210 of the base support plate 200 by inserting the welded portion of the base support plate 200 that is formed when welded to the vessel block 10.

[43] FIG. 9 shows a second preferred embodiment of the invention, in which at least one vertical protrusion 220 and vertical groove 360 that correspond to each other are formed at the base support plate 200 and the locking plate 300, respectively. [44] That is, the vertical protrusions 220 are formed on both longitudinal sides of the base support plate 200, and are preferably formed perpendicular to the supporting protrusions 210.

[45] As described above, the vertical grooves 360 corresponding to the vertical protrusions 220 are formed at the inner side of the locking plates 300 to prevent the locking plate 300 from sliding with the supporting grooves 320 fitted to the supporting protrusions 210 of the base support plate 200 such that locking plates 300 and the base support plate 200 are not separated.

[46] FIG. 10 shows a third preferred embodiment of the invention, in which fitting grooves 230 and fitting protrusions 370 that correspond to each other are formed at the base support plate 200 and the locking plates 300, respectively.

[47] In detail, it is preferable to form the fitting grooves 230 at the supporting protrusions

210 of the base support plate 200 and the fitting protrusions 370 at the supporting grooves 320 of the locking plates 300 to correspond to the fitting grooves 230 of the base support plate 200.

[48] FIG. 11 shows a fourth preferred embodiment of the invention, in which a fastening groove 240 and fastening protrusions 380 that correspond to each other are formed at the base support plate 200 and the locking plates 300, respectively.

[49] In detail, it is preferable to form the fastening groove 240 in the width direction on the upper surface of the base support plate 200 and the fastening protrusions 380 at the supporting grooves 320 of the locking plates 300 to correspond to the fastening groove of the base support plate 200.

[50] FIG. 12 shows a fifth embodiment of the invention, in which at least one fastener- through holes 250, 390 that correspond to each other are formed in the base support plate 200 and the locking plates 300, which may be combined by sub-fasteners 700, such as nuts and bolts, which are combined together through the fastener- through holes 230, 390.

[51] In detail, at least one fastener- through hole 250 is formed through the base support plate 200 in the width direction and the fastener-through hole 390 is formed through the locking plate 300 to correspond to the fastener-through hole 250 of the base support plate 200, and then the base support plate 200 and the locking plates 300 are firmly fixed together by the sub-fasteners 700.

[52] The main fasteners 400 are composed of bolts and nuts that combine the pair of the locking plates 300 together that are in contact with each other.

[53] That is, the main fasteners 400 combine the pair of locking plates 300 that are in contact with each other such that the supporting protrusions 210 of the supporting plate 200 are kept fitted in the supporting grooves 320 of the locking plates 300.

[54] Therefore, the pair of locking plates 300 can be kept locked and fixed to the base support plate 200 by the main fasteners 400 while being in contact with each other. [55] According to this configuration, the closer the main fasteners 400 to the vessel block

10, the better the locking plates 300 are stably fastened to the base support plate 200. [56] Further, the sub-fixing plates 500 that are inserted and locked in the locking recesses

330 of the locking plates 300 may be provided to fix the locking plates 300 that are fastened to the base support plate 200 by the main fasteners 400.

[57] The sub-fixing plate 500, a plate having an invert U-shape with both ends bent downward, is inserted into the locking recess 330 of the locking plate 300 and locked to the stepped portion of the locking recess 330, and then the bent ends are welded to the vessel block 10.

[58] Further, the locking-fixing bolt 600 that is screwed in the fixing bolt insertion hole

331 of the locking plate 300 may be provided to keep the sub-fixing plate 500 stably locked to the locking plate 300.

[59] That is, the locking-fixing bolt 600 prevents the sub-fixing plate 500, which is locked in the locking recess 330 of the locking plate 300, from bending backward and separating from the locking plate 300 by a shock that is applied to the locking plate 300.

[60] Further, in this embodiment, it may be possible to additionally insert a triangular sub- support plate 610 into the locking recess 330 of the locking plate 300 and then fasten the sub-support plate 610 with the locking-fixing bolt 600, as shown in FIG. 13.

[61] The sub-support plate 610 makes it possible to more stably support the sub-fixing plate 500 by increasing the locked area of the sub-fixing plate 500 by the locking- fixing bolt 600.

[62] The operation of the lug 100 for a vessel having the above configuration is described hereafter with reference to FIGS. 2 to 13.

[63] First, needed numbers of the base support plates 200 are welded to appropriate positions according to the weight and size of each block 10 for the vessel.

[64] Next, a worker fits the pair of locking plates 300 to both sides of each of the base support plates 200 such that the supporting protrusions 210 correspond to the supporting grooves 320.

[65] Thereafter, the worker fastens the pair of locking plates 300 together to be in contact with each other using the main fasteners 400, bolts and nuts.

[66] After fastening the pair of locking plates 300 to the base support plate 200 using the main fasteners 400, as the worker inserts the hook of a crane into the hooking holes 320 of the locking plates 300, which is at a desired position, and then actuates the crane, the vessel block 10 is can be stably and easily carried and mounted.

[67] To reinforce connection of the locking plate 300 to the vessel block 10, the worker can fit the sub-fixing plates 500 into the locking recesses 330 of the locking plate 300 and weld both ends of the sub-fixing plate 500 to the vessel block 10, and then screw the locking-fixing bolts 600 into the fixing bolt insertion holes 331 of the locking recesses 330.

[68] Thereafter, to remove the lug 100 for a vessel of the invention after finishing the vessel block 10, the worker unscrews the locking-fixing bolts 600 from the fixing bolt insertion hole 331 of the locking recesses 330 and then separates the sub-fixing plates 500 by hitting them with a hammer (not shown).

[69] Further, after separating the locking plates 300 fastened by the main fasteners 400, the worker can separate the pair of locking plates 300 from the base support plate 200.

[70] In this operation, it is not needed to separate the base support plate 200 because the height of the base support plate on the vessel block 10 is not large.

[71] According to the configuration of the lug 100 for a vessel of the invention, as described, since it is easy to separate the locking plates 300 that connect the hook of the crane with the vessel block 10 from the base support plate 200 that is combined with the vessel block 10 after finishing mounting of the vessel block 10 by only unscrewing the main fasteners 400, the vessel block 10 is not damaged and the locking plates 300 can be reused.

[72] The present invention is described with limited embodiments and drawings as described above, but it should be understood that the invention is not limited thereto and can be variously changed and modified by those skilled in the art within a range equivalent to the scope of the invention that will be described in the following claims.

Claims

[1] A lug for a vessel, comprising: a base support plate that is a plate combined with a vessel block and having supporting protrusions at both longitudinal sides; locking plates that are a pair of plates, each of which is correspondingly fitted to the base support plate to be in contact with each other, having a hooking hole where a hook of a crane is hooked and an L-shape with an end bent upward, provided with ribs at the outer side for reinforcing a curved portion, having locking recesses with locking-fixing bolts and fixing bolt insertion holes where the locking-fixing bolts are inserted, having welding space grooves at both longitudinal sides where a welded portion is inserted to combine the base support plate with the vessel block, and having a support groove that corresponds to the support protrusion of the base support plate; and main fasteners that fasten a pair of the locking plates to be in contact with each other and keeps the support protrusion of the base plate and the support groove of the locking plate fastened to each other.

[2] The lug for a vessel according to claim 1, wherein at least one vertical protrusion that is perpendicular to the support protrusion is formed at both longitudinal sides of the base support plate and a vertical groove that corresponds to the vertical protrusion is formed on the inner side of the locking plate.

[3] The lug for a vessel according to claim 1, wherein fitting grooves are formed on the support protrusion of the base support plate and fitting protrusions that correspond to the fitting grooves are formed at the support groove of the locking plate.

[4] The lug for a vessel according to claim 1, wherein a fastening groove is formed in the width direction on the upper surface of the base support plate and a fastening protrusion that corresponds to the fastening groove is formed at the support groove of the locking plate.

[5] The lug for a vessel according to claim 1, wherein at least one fastening-through hole is formed through the base support plate in the width direction, a fastening- through hole that corresponds to the fastening-through hole of the base plate is formed through the locking plate, and sub-fasteners that are inserted in the fastening-through holes to fasten and fix the locking plate to the base support plate.

[6] The lug for a vessel according to claim 1, further comprising: sub-fixing plates each of which has an n-shape having both ends bent downward and fixed to the vessel block by locking in the locking recesses of the locking plate; and locking-fixing bolts that are screwed in the fixing bolt insertion holes formed at the locking recesses of the locking plate to fix the sub-fixing plate locked in the locking recesses of the locking plate.

[7] The lug for a vessel according to claim 6, further comprising sub-support plates that are placed in the locking recesses of the locking plate and fastened and fixed to the locking plate by the locking-fixing bolts.