JP2007062550A - Temporary scaffolding device for repairing ballast tank or the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temporary scaffolding device for repairing a ballast tank, etc. capable of efficiently and safely performing repairing work, etc. of tank parts A and B formed in a corner part of a hull side plate 2 and a deck 3 or a vessel bottom plate 4 in the ballast tank. <P>SOLUTION: In this device, a rib R formed into a substantially right angled triangle in cross section by a vertical wall part 2a, a horizontal wall part 3a and an oblique wall part 7 and extending in the hull longitudinal direction in an internal surface of each wall part 2a, 2b and 7 in the corner part of the hull side plate 2, the deck 3 or the vessel bottom plate 4 in the ballast tank is assembled in tank parts projectingly provided at fixed intervals. The device is constituted of a single pipe 11 with a clamp, a scaffolding board 13 with one leg provided with a hook 21 for locking at one end part and provided with a single pipe 22 for locking the hook 21 and a foldable leg body 23 at the other end, a scaffolding board 15 for both hooks, and scaffolding boards 16 and 17 for one hook. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a ship's ballast tank, particularly repair work in a tank portion formed by a vertical wall portion, a horizontal wall portion, and a slant wall portion at a corner portion of a hull side plate and a deck or a bottom plate and having a substantially right-angled cross section. The present invention relates to a temporary scaffold device that is assembled and used in a tank portion when performing inspection work or the like.

  The ballast tank is a tank of a ship in which water is poured or drained by a pump in order to adjust the resilience of the ship, draft, and the like. FIG. 1 is a cross-sectional view of a hull 1 of a cargo ship carrying iron ore and the like, and FIG. 2 is an enlarged view of a portion indicated by an arrow X in FIG. As can be seen from FIG. 1, the ballast tank 2 is provided along the inner peripheral surface of the hull 1, and the tank portion A, the hull side plate 2, and the tank portion A formed at the corner portion between the hull side plate 2 and the deck 3 A tank part B formed at the corner with the ship bottom plate 4, a tank part C formed between the hull side plate 2 and the inner wall 5, and formed between the ship bottom plate 4 and the inner wall 6. The tank part D etc. which are made.

  For example, when iron ore is transported to Japan from a foreign country of origin on such a cargo ship, the load of iron ore is considerably heavy at the time of transportation, so water is not supplied to the ballast tank, and iron ore is sent to the Japanese port. When returning to a foreign country, seawater is poured into the ballast tank to adjust the draft, return to the port with the seawater stored in the ballast tank, and discharge the ballast water when loading iron ore again. ing.

  If seawater is used for the ballast water of the ballast tank as described above, the inside of the tank is easily corroded, and therefore it is necessary to periodically repair the inside of the tank after draining. The repair work inside the tank includes inspection work, cleaning work, painting work, etc., and these work are usually performed by loading iron ore with the ballast water discharged and the ballast tank empty. Carried to the ground, during the transport period.

  Therefore, when repairing the inside of the ballast tank, the tank part C formed inside the hull side plate 2 and the tank part D formed inside the ship bottom plate 4 are relatively low in height. The tanks A and B formed at the corners of the hull side plate 2 and the deck 3 or the bottom plate 4 are 5 to 6 m high at a large cargo ship. Therefore, work cannot be performed without a scaffold.

  Conventionally, in order to repair the inside of such tank parts A and B, for example, a long ladder was hung on a required part inside the tank parts A and B, and work was performed using this ladder. In the work using the ladder, the work efficiency was very bad and the ladder could fall down, which was dangerous. Therefore, the present invention is for ballast tank repair and the like that can efficiently and safely perform repairs and the like in the tank portions A and B formed at the corner portions of the hull side plate 2 and the deck 3 or the bottom plate 4 in the ballast tank. An object is to provide a temporary scaffold device.

Means for solving the above problems will be described with reference numerals in the embodiments described later. A vertical wall portion 2a and a horizontal wall portion at a corner portion between the hull side plate 2 and the deck 3 or the bottom plate 4 in the ballast tank. Ballast tank repair etc. which is assembled in a tank part which is formed with a rib R extending in the longitudinal direction of the hull at regular intervals on the inner surface of each wall part formed by 3a, 4a and the inclined wall parts 7, 8 A temporary scaffold device for
A single tube 11 with a clamp to which a plurality of single tube fixing clamps 12 are attached, a hook 21 for locking at one end, and a single tube 22 for hook locking and a foldable leg 23 at the other end. A legged scaffolding plate 13 and a one-hooked scaffolding plate 16 provided with a locking hook 43 at one end,
A single tube 11 with a clamp is fixed to each of two required ribs R on the inclined wall portions 7 and 8 on the lower side and an upper side by a clamp 12, and a single leg 11 scaffolding plate 13 is fixed to the upper side single tube 11. The lower end of the leg body 23 of the one-legged scaffolding plate 13 is fixed to the lower single tube 11 via a fixture 32, and the one-legged scaffolding board 13 hook is secured. The locking hook 43 of the scaffolding plate 16 with one hook is locked to the locking single tube 21, and the other end of the one-legged scaffolding plate 13 is placed on a required rib R on the vertical wall 2a. It is characterized by being multiplied.

  A second aspect of the present invention is the temporary scaffolding device for ballast tank repair and the like according to the first aspect, wherein the single tube 11 with a clamp is clamped to a required rib R further below the rib R to which the lower single tube 11 is fixed. The locking hook 44 of the scaffolding plate 17 with one hook is locked to the single tube 11 with clamp, and the other end of the scaffolding plate 17 with one hook is connected to the required vertical wall 2a. It is characterized by being placed on the rib R.

  According to a third aspect of the present invention, in the temporary scaffolding device for ballast tank repair and the like according to the first or second aspect, the one-legged scaffolding plate 13 is provided with a hatch 33 on the end side where the leg body 23 is provided, A floor portion 34 for opening and closing the hatch 33 is provided.

  The effect of the invention by the above solution will be described with reference numerals of the embodiments described later. According to the invention according to claim 1, the lower side of the inclined wall portions 7 and 8 and the upper side 2 of the lower side are provided. A single tube 11 with a clamp is fixed to one required rib R with a clamp 12, a hook 21 for locking a scaffolding plate 13 with one leg is locked to a single tube 11 on the upper stage, and a single tube 11 is connected to the lower single tube 11. The lower end of the leg body 23 of the legged scaffolding plate 13 is fixed via a fixture 32, and the hooking hook 43 of the scaffolding board 16 with one hook is attached to the hook retaining single tube 21 of the one legged scaffolding board 13. Since the front work floor 1Sa and the rear work floor 1Sb are formed by engaging and placing the other end of the one-legged scaffolding plate 13 on the required rib R of the vertical wall 2a, this work floor Efficient ballast tank repair and inspection work with 1Sa and 1Sb It is possible to perform Ku and safely.

  Further, this construction scaffold device is easy to assemble and disassemble, and once the operator understands the above assembly procedure, for example, after the completion of the work in one ballast tank compartment a, this construction scaffold device. Is disassembled and transported to the next ballast tank compartment a, where it can be assembled in the same manner as described above, and can be disassembled when the work is completed. Assembling / disassembling work of the scaffolding device in the room a can be performed in a short time, and repair work and inspection work of a number of ballast tank compartments a formed in the ballast tank of the hull 1 are performed. It can be performed efficiently and in a short period of time.

  According to the second aspect of the present invention, when the height of the vertical wall portion 2a is relatively high, the single tube 11 with a clamp is attached to the required rib R further on the lower side of the rib R to which the lower side single tube 11 is fixed. Is fixed by the clamp 12, and prior to assembling the rear work floor 1Sb on the upper stage side, the locking hook 44 of the scaffolding plate 17 with one hook is locked to the single tube 11 with the clamp, and this single hook is attached. By placing the other end of the scaffold plate 17 on a required rib R on the vertical wall 2a to form the lower work floor 2S, the operator can move the upper rear work floor on the lower work floor 2S. 1Sb can be assembled easily and safely.

  According to the invention of claim 3, the one-legged scaffold plate 13 is provided with the hatch 33 on the end side where the leg body 23 is provided, and the floor portion 34 for opening and closing the hatch 33 is provided. The vertical movement of the legged scaffolding plate 13 is facilitated, and the work efficiency is improved.

  A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a hull 1 of a cargo ship, and FIG. 2 is an enlarged view of a portion indicated by an arrow X in FIG. In these drawings, A is a tank portion formed at the corner portion of the hull side plate 2 and deck 3 in the ballast tank, and B is a tank portion formed at the corner portion of the hull side plate 2 and the bottom plate 4. The temporary scaffold apparatus for ballast tank repair etc. which concerns on invention is a scaffold apparatus used in each tank part A and B. FIG. Each tank part A, B is partitioned by partition walls W provided at regular intervals in the longitudinal direction of the hull to form a large number of ballast tank compartments a, b. The scaffold device is a scaffold device assembled in the ballast tank compartments a and b.

  FIG. 3 is a perspective view showing the internal structure of a ballast tank compartment a formed by partitioning walls W provided at regular intervals in the longitudinal direction of the hull 1. This ballast tank compartment a is composed of a hull side plate 2 Are formed in a substantially right-angled triangle section by a vertical wall portion 2a forming a part of the horizontal wall portion 3a, a horizontal wall portion 3a forming a portion of the deck 3 (see FIG. 2), and a slanted wall portion 7, and each wall portion 2a, Ribs R extending in the longitudinal direction of the hull 1 are provided on the inner surfaces of 3a and 7 at regular intervals. In each partition wall W, a communication window O is opened so that ballast water communicates between the ballast tank compartments a.

  If an example of the size (dimension) of the ballast tank compartment a is shown for reference, as shown in FIG. 3, the height of the vertical wall portion 2a is 5.9 m and the length between the partition walls W is 4 m. The length of the wall 3a is 10 m, and the length of the inclined wall 7 is 11.6 m. The length of each rib R is slightly shorter than the length between the partition walls W. The ballast tank compartment b is formed in a substantially right-angled triangle section by a vertical wall portion 2a forming part of the hull side plate 2, a horizontal wall portion 4a forming part of the ship bottom plate 4, and a slant wall portion 7. The ribs R extending in the longitudinal direction of the hull 1 are provided at regular intervals on the inner surfaces of the walls 2a, 4a, and 7.

  FIG. 4 (a) is a plan view showing the ceiling portion 3a of the ballast tank compartment a, and this ceiling portion 3a forms a part of the deck 3. The ceiling portion 3a has a ballast tank compartment. A carry-in hatch 10 for carrying materials into a is provided. 4B is an enlarged plan view of the loading hatch 10 shown in FIG. 4A, FIG. 4C is a cross-sectional view taken along the line YY of FIG. 4A, and FIG. 4D is a cross-sectional view taken along the line ZZ of FIG. is there. A ladder H is suspended from the carry-in hatch 10 in the ballast tank compartment a.

  5 to 10 show components of the temporary scaffolding device for ballast tank repair and the like according to the present invention. First, (a) in FIG. 5 is a front view of the single tube 11 with the clamp 12, (b) is a side view, (c) is a front view of the portion indicated by arrow (a), (d) is a left side view, and (e) is a plan view. The single pipe 11 is made of a steel pipe and is shorter than the length of the rib R, and has a length of about 3.1 m, for example. Clamps 12 are attached and fixed at three locations, the both ends of the single tube 11 and its intermediate portion. As shown in FIGS. 5C to 5E, each clamp 12 is screwed to the U-shaped main body 12a and one end of the U-shaped main body 12a, and the spring plate 12c is fixed to the tip. The fastening bolt 12b is a well-known one and is attached to a required portion of the single tube 11 by a bolt 12e via a mounting bracket 12d.

6 (a) is a front view of the scaffolding plate 13 with one leg, (b) is a plan view, (c) is a bottom view, and (a) in FIG. 7 is one leg with the leg folded. (B) is a front view in a state where the leg is lowered, and (c) is an enlarged view of a portion indicated by an arrow (b), and (d) is a main body of the scaffold plate. FIG. 8E is a perspective view with the hatch closed, FIG. 8E is a perspective view with the hatch opened, and FIG.
FIG. 8 is an enlarged sectional view taken along the line ha-ha in FIG. 7B, and FIG. The one-legged scaffolding plate 13 is provided with a pair of locking hooks 21 and 21 at one end of the scaffolding plate body 13o, and a hook locking single tube 22 made of a steel pipe at the other end, At the other end, a leg body 23 is pivotally attached to the lower surface side of the scaffold board body 13o so as to be foldable.

  The leg body 23 is composed of a pair of side pillars 23a, 23a each made of a steel pipe, a base 23b that connects the upper ends of the both legs 23a, 23a, and a plurality of horizontal bars 23c that connect the intermediate parts. The base 23b is pivotally attached to the scaffolding plate body 13o, and is folded to the lower surface side of the scaffolding plate body 13o as shown in FIG. 7 (a), and stored as shown in FIG. 7 (b). It is configured to be rotatable over a use position rotated 90 degrees from the position, and is locked by a lock mechanism (not shown) at the use position, and the operation knob 24 shown in FIG. The lock is released by turning in the direction of the arrow.

  Further, as shown in FIGS. 7 (a) and 7 (b) and FIGS. 8 (a) and 8 (b), the leg body 23 is stabilized in the use position between each of the 23a and the scaffold board body 13o. A brace 25 that holds the state is interposed. One end of each brace 25 is pivotally attached to the intermediate part of the leg column 23a, and a mounting bolt 26 is attached to the tip of the brace 25. When the leg 23 is in the use position, the mounting bolt 26 is used as a scaffold. The leg body 23 is held in a stable state at the use position by being screwed into a nut 27 (see FIG. 8A) on the plate body 13o side. The attachment bolt 26 is screwed to a thin attachment piece 28 attached to the tip of the brace 25. The left half of FIG. 8 (a) shows a state before the brace 25 is hung from the pedestal 23a to the scaffolding board main body 13o, and the right half of the brace 25 is after the brace 25 is hung on the scaffolding board main body 13o. Indicates the state.

  Further, a fixing bolt 29 is detachably attached to the lower end portion of each leg pillar 23a, and when the leg body 23 is folded into the storage position, the brace 25 is legged as shown by an imaginary line in FIG. 7 (b). Along with the pillar 23a, as shown in the left half of FIG. 8A, the distal end of the fixing bolt 29 inserted from the side of the leg pillar 23a is screwed into the screw hole 30 of the distal end brace 25 of the brace 25, thereby 25 can be fixed to the pedestal 23a. Thus, when the leg body 23 with the brace 25 fixed to the pedestal 23a is folded into the storage position, the mounting bolt 26 at the tip of the brace 25 is attached to the nut 31 on the scaffold plate body 13o side (see FIG. 8A). By screwing, the leg body 23 can be fixed in the storage position. When the leg body 23 is pulled out from the storage position to the use position, the mounting bolt 26 is loosened and removed from the nut 31 on the scaffold plate body 13o side, the fixing bolt 29 is removed, and then the leg body 23 is turned to the use position. The brace 25 is moved up and the mounting bolt 26 at the tip thereof is screwed into the nut 27 on the scaffold plate body 13o side.

  7 (b), 7 (c) and FIG. 8 (a), the leg 23 is fixed to the clamped single tube 11 at the lower end of each leg 23. As shown in FIG. A fixture 32 is provided. This fixing tool 32 is composed of a U-shaped frame piece 32a fixed to the lower end of the leg 23 and a fixing bolt 32b attached to one end of the U-shaped frame piece 32a. As shown in c), after the U-shaped frame piece 32a is fitted to the single tube 11 from above, the fixing bolt 32b is screwed and fixed.

  Further, as shown in FIGS. 6 and 7 (d) and (e), the one-legged scaffolding plate 13 is provided with a hatch 33 on the end side where the leg body 23 is provided. The floor portion 34 is pivotally attached to the side of the scaffold plate body 13o at one end. 7D and 7E show a state in which the hook locking single tube 22 to be attached to the end portion of the scaffold plate 13 is removed.

  FIG. 9 (a) is a front view of the scaffolding plate 15 with both hooks, and FIG. 9 (b) is a plan view. The scaffolding plate 15 has a pair of locking hooks 42 at both ends of the scaffolding plate body 15o. It is provided one by one. FIG. 10 (a) is a front view showing the first single-hook-equipped scaffolding plate 16, and FIG. 10 (b) is a plan view. The first single-hook-equipped scaffolding plate 16 is attached to one end of the scaffold-plate main body 16o. A pair of locking hooks 43 are provided on both sides. In addition, (c) in the same figure is a front view showing the second single-hook-equipped scaffolding plate 17, (d) is a plan view, and the second single-hook-equipped scaffolding plate 17 is more than the first single-hooked scaffolding plate 16. This is the same structure as that of the first embodiment, and is provided with a pair of locking hooks 44 at one end of the scaffolding plate body 17o. The length of the scaffold plate 16 with the first piece hook is about 300 cm, and the length of the scaffold plate 17 with the second piece hook is about 253 cm.

  As described above with reference to FIGS. 5 to 10, the single tube 11 with the clamp 12, the scaffolding plate 13 with one leg, the scaffolding plate 15 with both hooks, and the first and second scaffolding plates 16 and 17 with one hook are the ballast tank of the present invention. Construct temporary scaffolding device for repair etc. The method for assembling the temporary scaffold device will be described below mainly with reference to FIGS.

  11 (a) is a view similar to FIG. 3, and is divided by partition walls W provided at regular intervals in the longitudinal direction of the hull, and is divided into a vertical wall portion 2a, a horizontal wall portion 3a (see FIG. 2), and a slant wall portion. 7 shows the internal structure of the ballast tank compartment a formed in a substantially right triangle in section, and (b) is an enlarged view of the portion indicated by the arrow H in (a). The temporary scaffold device described below is a temporary scaffold device assembled in the ballast tank compartment a. Then, the material (apparatus component) is carried into the ballast tank compartment a using the ladder H from the carry-in hatch 10 provided on the horizontal wall 3a on the deck 3 side.

  First, a single tube 11 with a clamp 12 is attached to each of the ribs R, for example, the third, fourth, and seventh steps from the bottom of the rib R projecting from the inclined wall portion 7 as shown in FIG. As shown, it is fixed with a clamp 12 and is set in an attached state as shown in FIG.

  Then, hooks for locking the two single-legged scaffolding plates 13, 13 juxtaposed at both ends of the upper-side single pipe 11 with a required interval (an interval sufficient for arranging, for example, four scaffolding plates 15 with both hooks). 21 (see FIG. 13 (b)), and the lower single tube 11 (the single tube 11 attached to the rib R at the fourth step from the bottom) below each of the scaffolding plates 13 with one leg. The lower end of the leg 23 is fixed via a fixture 32 as shown in FIG. In this way, the hook locking single tubes 22 and 22 of the two one-legged scaffolding plates 13 and 13 fixed on both sides are connected by a connecting pipe 14 as shown in FIGS. 16 (a) and 16 (b). . The connecting pipe 14 is made of a steel pipe slightly smaller than the inner diameter of the hook locking single pipe 22, and both ends of the pipe 14 are arranged opposite to the left and right sides as shown in FIG. What is necessary is just to make it fit to the single pipes 22 and 22 for hook latching of the scaffolding plates 13 and 13 with one leg.

  After connecting the hook locking single tubes 22 and 22 of the two single-legged scaffolding plates 13 and 13 by the connecting pipe 14 as described above, both hooks are provided between the single-legged scaffolding plates 13 and 13 on both sides. Four scaffold plates 15 are arranged, and one end side locking hooks 42 of the two hooked scaffold plates 15 are locked to the upper single tube 11 fixed to the rib R, and the other end side locking hooks 42 are locked. The upper working floor 1Sa composed of the scaffolding plates 13 and 15 is formed by engaging with the connecting pipe 14.

  In this embodiment, as described above, the two single-legged scaffolding plates 13 and 13 are arranged at a required interval, and the hook locking single tubes 22 and 22 of the two scaffolding plates 13 and 13 are connected by the connecting pipe 14. In the connected state, the upper front work floor 1Sa is formed by interposing a plurality of (four) scaffolding plates 15 with both hooks between the two one-legged scaffolding plates 13, 13. You may form all this upper front work floor 1Sa with the scaffolding board 13 with one leg. That is, in this case, the six single-legged scaffolding plates 13 may be sequentially arranged and fixed from one end side of the upper stage side single tube 11. Further, in the embodiment, the upper front work floor 1Sa is formed by the two single-legged scaffolding plates 13 and a plurality (four), but depending on the contents of the work, the single-legged scaffolding plate 13 is used. The upper front work floor 1Sa may be formed.

  If the upper front work floor 1Sa composed of the scaffolding plates 13 and 15 is formed in this way, the second one hook is formed before forming the upper rear work floor (consisting of the first one-hook scaffolding plate 16). A lower work floor 2S composed of the attached scaffolding plate 17 is formed. That is, as shown in FIG. 4 (a), the lowermost single pipe 11 (the single pipe 11 attached to the rib R at the third stage from the bottom of the inclined wall portion 7) and substantially the same level as the single pipe 11 6 pieces of the second half-hooked scaffolding plates 17 (see FIG. 10 (b)) are arranged across the rib R on the vertical wall portion 2a side, and the one-end-side locking hooks 44 of the respective scaffolding plates 17 are arranged. Locked to the single tube 11 (see FIG. 13 (b)), the other end of each scaffold plate 17 is placed on the rib R on the vertical wall portion 2a side. The lower work floor 2S is formed.

If the lower work floor 2S composed of the scaffold plate 17 with the second piece hook is formed as described above, the lower work floor 2S is used to perform the rear work behind the already formed upper front work floor 1Sa. The floor 1Sb is formed. In other words, the first single-hook hooking scaffolding is provided on the hook locking single tube 22 of each single-legged scaffolding plate 13 and the hook locking upper tube 18 of the scaffolding plate mounting frame 14 forming the upper front work floor 1Sa. The locking hooks 43 of the plate 16 are respectively locked ((b) in FIG. 14 and (c) in FIG. 16).
(See Fig. 14 (c)). The other end of the scaffolding plate 16 with one hook is placed on a required rib R on the horizontal wall 3a in a state where the scaffolding plate 16 is in a substantially horizontal position (see Fig. 14 (c)). As a result, the upper rear work floor 1Sb is connected to the rear of the upper front work floor 1Sa as shown in FIG.

  After forming the upper work floor 1Sa, 1Sb and the lower work floor 2S, as shown in FIGS. 15 (a) to 15 (c), support columns 45, 46 are installed on both sides of the upper work floor 1Sa, 1Sb for handrails. The rope 47 is stretched. A clamp 48 and a rope attachment ring 49 are attached to the column 45, and are fixed to the rib R on the horizontal wall 3a side by the clamp 48. Further, a clamp 50 and a rope threading ring 51 are also attached to the column 46, and this column 46 is attached to the scaffolding plate 13 with one leg by the clamp 50, as shown in FIG. 15 (b) and FIG. 16 (a). It fixes to the pedestal 23a of the leg 23. As shown in FIG. 15 (a), the rope 47 has one end attached to the ring 49 of the support column 46, its intermediate portion passed through the rope threading ring 51 at the top of the support column 46, and the other end portion inclined. It is stretched by being attached to a clamp (not shown) fixed to the rib R of the portion 7.

  According to the construction scaffold device assembled in the ballast tank compartment a as described above, this construction scaffold device is provided with a single tube 11 with a clamp to which a plurality of clamps 12 are attached, and a locking hook 21 at one end. And a single legged scaffolding plate 13 provided with a hook locking single tube 22 and a foldable leg 23 at the other end, a scaffolding plate 15 with both hooks, and a first and second single footing scaffolding plate 16, When assembling, the single pipe 11 with the clamp 12 is fixed to the ribs R of the inclined wall 7 at the third, fourth and seventh ribs R from the bottom, for example. The upper side (seventh step from the bottom) of the single pipe 11 is engaged with the locking hooks 21 of the two single-legged scaffolding plates 13 juxtaposed with each other at a required interval. Eye) A single tube 11 and a lower end of a leg 23 of each single leg scaffolding plate 13 Is fixed via a fixture 32, and the hook locking single tubes 22 and 22 of the two single-legged scaffolding plates 13 and 13 are connected by the connecting pipe 14, and then between the two single-legged scaffolding plates 13 By arranging a plurality of scaffolding plates 15 with both hooks and locking the hooks 42 on both ends of each scaffolding plate 15 to the upper single tube 11 and the connecting pipe 14, The upper front work floor 1Sa is formed, and thereafter, a second pipe is formed across the lowermost stage (third stage) single pipe 11 and the rib R on the vertical wall 2a side at the same level as the single pipe 11. A plurality of scaffold plates 17 with one hook are arranged, one end side locking hooks 44 of each scaffold plate 17 are locked to the single tube 11, and the other end portion of each scaffold plate 17 is a rib R on the vertical wall portion 2a side. The lower work floor 2S formed of the scaffold plate 17 with the second one-hook is formed by placing it on top. Then, the hooking single tubes 22 of the two one-legged scaffolding plates 13 and the connecting pipes 14 are respectively engaged with the locking hooks 43 of the plural scaffolding plates 16 with one hook, and these one-hooked scaffolding plates. Since the upper rear work floor 1Sb is formed behind the upper front work floor 1Sa by placing the other end of 16 on the rib R of the same level on the vertical wall 2a, the lower work floor 2S and the upper stage are formed. By the work floors 1Sa and 1Sb, repair work and inspection work in the ballast tank compartment a can be performed efficiently and safely.

  And this construction scaffold device is easy to assemble and disassemble, and once the operator understands the above assembly procedure, this construction scaffold device is completed after the work in one ballast tank compartment a. Can be disassembled and transported to the next ballast tank compartment a, where it can be assembled in the same manner as the assembly procedure described above, and can be disassembled once the operation is complete. Assembling and disassembling of the building scaffolding equipment can be performed in a short time, and repairing and inspection work for the many ballast tank compartments a formed in the ballast tank of the hull 1 can be performed efficiently and in a short period of time. Can be done.

  In addition, when installing a construction scaffold apparatus in the first ballast tank compartment a, the apparatus components are carried in using a ladder H from the carry-in hatch 10 provided in the ceiling portion 3a, and one ballast tank. The apparatus constituent members are transferred from the sorting chamber a to the adjacent ballast tank sorting chamber a through the communication window O of the partition wall W.

  In this embodiment, prior to assembling the upper rear work floor 1Sb, a plurality of second single-hook hook plates 17 are arranged across the lowermost single tube 11 and the required rib R on the vertical wall portion 2a side. 17 is engaged with the single tube 11 and the other end of each scaffolding plate 17 is placed on the rib R on the vertical wall 2a side to form a plurality of second one-hook hooked scaffolds. Although the lower work floor 2S made of the plate 17 is formed, the height of the vertical wall portion 2a is relatively low, and the work such as repair in the ballast tank compartment a is performed only by the upper work floors 1Sa and 1Sb. In the case where the work can be performed, it is not necessary to form the lower work floor 2 </ b> S composed of the second one-hooked scaffold plate 17 and can be omitted.

  When the height of the vertical wall portion 2a is relatively high, the operator can assemble the lower work floor 2S prior to the assembly of the upper rear work floor 1Sb, as in this embodiment, so that the operator can The assembly work of the upper rear work floor 1Sb can be performed easily and safely.

  Further, in this temporary scaffold device, the one-legged scaffold plate 13 is provided with a hatch 33 on the end portion side where the leg body 23 is provided, and a floor portion 34 for opening and closing the hatch 33 is provided. By using this, it becomes easy to move downward from the scaffolding plate 13 with one leg, and the work efficiency is improved.

  In the embodiment described above, the temporary scaffold device for ballast tank repair or the like has a substantially right cross-section by the vertical wall portion 2a forming part of the hull side plate 2 and the horizontal wall portion 3a forming part of the deck 3 and the inclined wall portion 7. Although the embodiment assembled in the compartment chamber a of the tank portion A formed in a triangular shape has been described, this temporary scaffold device has a vertical wall portion 2a forming part of the hull side plate 2 and a horizontal wall forming part of the ship bottom plate 4. The section chamber b of the tank section A formed by the section 4a and the inclined wall section 8 having a substantially right-angled cross section is assembled in the same manner as in the case of the ballast tank section chamber a described above.

It is sectional drawing of the hull 1 of a cargo ship. It is an enlarged view of the part shown by the arrow X of FIG. It is a perspective view which shows the internal structure of the ballast tank division chamber a. (a) is a plan view showing the ceiling portion 3a of the ballast tank compartment a, (b) is an enlarged plan view of the carry-in hatch 10 shown in (a), (c) is a cross-sectional view along line YY of (a), (d) is a ZZ line sectional view of (b). (a) is a front view of a single tube 11 with a clamp 12, (b) is a side view, (c) is a front view of a portion indicated by an arrow (a), (d) is a left side view, (e) Is a plan view. (a) is a front view of the scaffolding plate 13 with one leg, (b) is a plan view, and (c) is a bottom view. (a) is a front view of the scaffolding plate 13 with one leg in a state where the leg is folded, (b) is a front view in a state of use with the leg lowered, and (c) is an arrow b in (b). (D) is a perspective view of the scaffold plate body with the hatch closed, and (e) is a perspective view of the state with the hatch opened. (a) is an enlarged sectional view taken along the line ha-ha in FIG. 7 (b), and (b) is an enlarged view of a portion indicated by an arrow d in FIG. 7 (b). (a) is a front view of the scaffolding board 15 with both hooks, and (b) is a plan view. (a) is a front view of the first scaffolding plate 16 with one hook, (b) is a plan view, (c) is a front view of the second scaffolding plate 17 with one hook, and (d) is a plan view. (a) is a perspective view which shows the internal structure of the ballast tank division chamber a, and shows the first step of the assembly method of a construction scaffold apparatus, (b) is an enlarged view of the part shown by the arrow H of (a). FIG. 5B is a perspective view showing the next stage of the assembling method, and FIG. 5B is an enlarged view of a portion indicated by an arrow in FIG. The perspective view which shows the further next step of the said assembly method, (b) is an enlarged view of the part shown by the arrow n of (a). The perspective view which shows the further next step of the assembling method, (b) is the enlarged view of the part shown by the arrow head of (a), (c) is the enlarged view of the part shown by the arrow head of (a). FIG. 4 is a perspective view showing the final stage of the assembling method, (b) is an enlarged view of a portion indicated by an arrow (a), and (c) is an enlarged view of a portion indicated by an arrow (a). (a) is a schematic front view showing a scaffolding plate mounting frame 14 connected to two one-legged scaffolding plates 13, (b) is an enlarged view of the portion indicated by arrow (a), and (c) is an upper work. It is an enlarged plan view which shows the connection part of the scaffolding board 13 with one leg and the scaffolding board 16 with a single hook which form floor 1Sa, 1Sb.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hull 2 Hull side plate 2a Vertical wall part 3 Deck 3a Horizontal wall part 4 Ship bottom board 4a Horizontal wall part 7 Oblique wall part 8 Oblique wall part R Rib 11 Single pipe with clamp 12 Single pipe fixing clamp 13 Scaffold board 14 with one leg Connecting pipe 15 Scaffolding plate 16 with both hooks First scaffolding plate 17 with second hook Scaffolding plate 22 with one second hook Single tube 23 for hooking one-legged scaffolding plate Leg 33 of scaffolding plate with one leg Hatch 34 Work floor

Claims (3)

In the ballast tank, ribs are formed at a corner between the hull side plate and the deck or bottom plate and formed into a substantially right triangle in cross section by the vertical wall portion, horizontal wall portion and slant wall portion and extending in the longitudinal direction of the hull on the inner surface of each wall portion A temporary scaffold device for ballast tank repair, etc. assembled in a tank section provided every other,
A single tube with a clamp having a plurality of single tube fixing clamps attached thereto, a one-legged scaffolding plate provided with a hook for locking at one end and a single tube for hook locking and a foldable leg at the other end , Consisting of a scaffolding plate with one hook provided with a hook for locking at one end,
A single pipe with a clamp is fixed to each of the two required ribs on the lower wall side and the upper wall side of the inclined wall with a clamp, and a hook for anchoring a one-leg scaffolding plate is locked to the upper single pipe. Then, fix the lower end of the leg of the one-legged scaffolding plate to the lower single tube through a fixture, and lock the one-legged scaffolding plate to the single-hook hooking plate of the one-legged scaffolding plate. A temporary scaffold device for repairing a ballast tank or the like, in which a hook is locked and the other end of the one-hook scaffold plate is placed on a required rib on the vertical wall.   A single tube with a clamp is fixed to a required rib on the lower side of the rib to which the lower single tube is fixed, and a locking hook for a scaffolding plate with a single hook is fixed to the single tube with the clamp. The temporary scaffold device for ballast tank repair or the like according to claim 1, wherein the other end portion of the scaffold plate with one hook is placed on a required rib on the vertical wall portion. The temporary scaffolding device for ballast tank repair or the like according to claim 1 or 2, wherein the one-legged scaffolding plate is provided with a hatch on an end side where the leg is provided and a floor for opening and closing the hatch. .

Images