JP2017120002A - Scaffold bracket for curved surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide scaffold bracket for curved surface having an excellent workability, economic property and safety, in which horizontal scaffold may be attached without welding fixation of a bracket attaching member, such as an angled piece, onto a curved roof plate or the like of a steel structure.SOLUTION: A scaffold bracket for curved surface is a scaffold bracket for a curved surface 4 formed with a hook 5 having a structure where it is inserted to be hooked into an insertion port arranged on an outer frame material which contacts to an outer surface of a curved roof plate of a steel structure and being temporally established, a horizontal material 8 and a diagonal material 9, in which the hook 5 comprises an attachment piece 6 arranged on a back part and a stopper 7 consisting of a flat plate on a pin 11 connecting part of the horizontal material 8. A rotatable clamp 10 is attached onto lower end part of the diagonal material 9 via a pin 13. It has a structure where the clamp 10 is fastened onto a flange of the outer frame material so as to be fixed onto the outer frame material. It comprises means for attaching a horizontal scaffold onto the outer surface of the curved roof plate.SELECTED DRAWING: Figure 4

Description

  The present invention relates to the structure of a scaffold bracket that is attached to the outer surface of a curved roof plate or the like of a storage tank.

When bracket scaffolds are provided on the roof plate 1, the side plate 2, etc., such as storage tanks, triangular scaffold brackets 32 and 34 as shown in FIGS. 14 and 15 are usually used.
As shown in FIG. 14, this conventional scaffold bracket 32 usually has a bracket mounting member such as Necopys 31 fixed by welding to the outer surface of a side plate 2 or the like that is erected vertically in a steel structure such as a storage tank. In this structure, a hook 32a is inserted into 31 and hooked.
A conventional curved scaffold bracket 34 shown in FIG. 15 is a bracket used when a scaffold is provided on the outer surface of a curved roof board 1 or the like of a steel structure such as a storage tank. A bracket mounting member such as Necopys 31 is fixed to the outer surface of 1 by welding, and a hook 35a is inserted into the Necopys 31 from above to be hooked. This conventional curved surface bracket 34 has a plurality of fixing holes 37a in the slanting member 37, and the position where the slanting member 37 and the bolts and nuts 38 of the horizontal member 36 are fastened and fixed according to the angle of the curved surface to which the bracket is attached. In this structure, the scaffold is adjusted horizontally by changing the crossing angle of the vertical member 35 and the horizontal member 36.

Patent Document 1 (Japanese Utility Model Laid-Open No. 01-057249) “Bracket Mounting Device for Intratank Scaffolding” includes a mounting seat in which pipe mounting portions are fixed radially to the opening of the bottom surface of the hopper of the cylindrical tank body, and this A structure of an in-tank scaffolding bracket mounting device is disclosed in which a radiation tube is pivotally attached to a mounting seat and a scaffolding bracket is fitted to the upper end of each radiation tube of the radiation tube base portion.

  Patent Document 2 (Japanese Utility Model Publication No. 02-046600) “Spherical Tank Opening / Closing Scaffolding” has a structure in which a temporary scaffolding on the outer peripheral surface of the spherical tank is a multistage scaffolding structure only in the vertical direction along the welded vertical seam A structure of a suspension scaffold is disclosed in which a suspension piece is fixed to the upper stage of the main body, a connection angle is fixed to the suspension piece with a bolt, a bracket is attached to the connection angle, and a scaffold plate or the like that opens and closes the bracket is incorporated. .

  Patent Document 3 (Registration No. 3152426) “Ship or Ballast Tank Scaffold Bracket Structure” describes a vertical member, a horizontal member, and an oblique member so that the crossing angle between the vertical member and the horizontal member can be varied. There is disclosed a structure of a bracket for a scaffold provided with a length adjusting means capable of adjusting a length of a side of a triangle in at least one of the above.

Patent Document 4 (Japanese Patent No. 3571866) "Three-dimensional bracket scaffold for laminated trusses and its bracket" includes a turnbuckle mechanism between a pair of engaging plates that engage with the upper edge of the laminated timber on which the truss is formed. And a base end portion of the support arm is pivotally mounted on one engaging plate of the mounting hardware, and between the other engaging plate and the middle portion of the support arm. There is disclosed a structure of a bracket equipped with a cane-shaped angle adjusting hardware capable of changing the length.

Patent Document 5 (Patent No. 3888593) “Slope Scaffolding Bracket” is composed of a horizontal material, a mounting material, a diagonal material and a handrail column, and one end of the horizontal material can be rotated on top of the mounting material. Is connected to the lower part of the mounting material, and one end of the diagonal member is rotatably connected, and the lower part of the handrail column is rotatably connected to the other end of the horizontal member, and in the axial direction of the diagonal member. There is disclosed a structure of a bracket for slope scaffolding which is provided with a plurality of support holes and integrated by connecting a support hole selected from the plurality of support holes and the other end of the horizontal member with a detachable pin. .

Actual Kaihei 01-057249 Actual fairness 02-046600 No. 3152426 Japanese Patent No. 3571866 Japanese Patent No. 3888593

As shown in FIG. 14, the scaffold bracket to be attached to the outer surface of the curved roof plate 1 such as a storage tank is hooked by inserting the hooks 32a of the scaffold bracket 32 into a plurality of Necopys 31 welded and fixed to the outer surface of the roof plate 1 or the like. Therefore, it took time and effort to remove the Necopys 31 with a grinder and to inspect the removed marks.
Further, as shown in FIG. 15, the conventional curved scaffold bracket 34 is provided with fixing holes 37 a for bolts and nuts 38 at regular intervals in the oblique member 37, and the fixing holes 37 a that are fastened and fixed by the bolts and nuts 38 are changed. In this structure, the horizontal angle is adjusted by adjusting the crossing angle of the vertical member 35 and the horizontal member 36. However, when the crossing angle does not coincide with the curved surface angle of the bracket 34 mounting portion, the curved surface scaffolding bracket 34 is attached to the horizontal member 36. There is a problem in safety and workability because it is necessary to adjust the level by providing a slanted member 37 with a bolt fixing hole or by providing a new bolt fixing hole.
Furthermore, as shown in FIG. 15, when securing the level with the conventional curved scaffold bracket 34, the oblique member 37 protrudes from the upper portion of the lateral member 36, which is obstructive when attaching a net for preventing fall / falling or the like. There was a problem with safety.

Patent Document 1 “Bracket Mounting Device for Intratank Scaffolding” relates to a device that can attach a scaffolding bracket to a tank inner wall without welding a bracket for fixing the scaffolding bracket. It does not relate to the structure of a bracket that is mounted horizontally on a curved surface.
Further, the present invention is not related to a bracket structure capable of adjusting the mounting angle and the length of the diagonal member in accordance with the angle of the curved surface.

Patent Document 2 “Spherical Tank Opening / Closing Scaffolding” relates to a structure of a multi-stage bracket scaffold that fixes an angle suspension piece that connects a bracket to the outer surface of a spherical shell plate. It does not relate to the structure of the bracket that can be installed without fixing by welding.
Further, the present invention is not related to a bracket structure capable of adjusting the mounting angle and the length of the diagonal member in accordance with the angle of the curved surface.

Patent Document 3 “Ship or Ballast Tank Scaffold Bracket Structure” has a double pipe structure in which diagonal members can be extended and fixed at an arbitrary overlap allowance, and a scaffold plate is attached horizontally to an inclined wall surface. Although it is related to the bracket for scaffolding, it is a structure in which the bracket for scaffolding is fixed to the support member consisting of a ladder device on the wall surface, and it is latched on the insertion port of the temporary outer frame material in contact with the roof plate of the storage tank etc. It does not relate to the structure of the bracket to be used.
Further, it does not relate to the structure of the scaffold bracket in which the hook is rotatably connected to the vertical member or the horizontal member.

Patent Document 4 “Three-dimensional bracket scaffold for laminated trusses and its bracket” relates to a bracket scaffold mounted horizontally to a large laminated trusses constituting the roof. It is not related to the structure of the bracket that is fixed to the roof plate of the storage tank and hooked to the temporarily inserted outer frame member.
Moreover, it does not relate to the structure of the bracket for scaffolding that allows the length of the entire diagonal member to be adjusted by the diagonal member having a two-plate structure, nor is it related to a bracket having a structure in which the diagonal member does not protrude above the horizontal member.

Patent Document 5 “Slope Scaffold Bracket” includes a plurality of support holes in an oblique member, and connects the selected support holes with pins to adjust the angle between the horizontal member and the attachment member to attach a horizontal scaffold. Although it relates to the structure of the bracket, it does not relate to the structure of the bracket having a clamp at the lower end of the diagonal member.
Also, it does not relate to the structure of the bracket for the scaffold that can adjust the length of the entire diagonal member by the diagonal member of the two-plate structure, nor is it related to the bracket of the structure in which the diagonal member does not protrude above the horizontal member. .

The object of the present invention has been made in view of the above-described problems of the prior art, and it is not necessary to weld and fix a bracket mounting member such as Necopies to a curved roof plate of a steel structure. The present invention provides a curved scaffold bracket that is capable of attaching a scaffold and has excellent workability, economy, and safety.

The curved surface scaffolding bracket according to the invention of claim 1 is a hook having a structure that is inserted into an insertion port provided in an outer frame material that is in contact with the outer surface of the curved roof plate of a steel structure and is hooked. A curved scaffold bracket formed by a horizontal member attached to a back portion of a hook, and a diagonal member spanned obliquely between an end of the horizontal member and a flange of the outer frame member, the hook being a back portion The outer frame material side end of the horizontal member is pivotally connected to the mounting piece provided on the pin through a pin, and a flat plate stopper is provided on the mounting piece and the pin connecting portion of the horizontal member. The stopper and the hook sandwich the web of the outer frame material to prevent the outer frame material from falling off,
The diagonal member has an upper end portion of the diagonal member connected to an end portion of the horizontal member through a pin so as to be rotatable, and a lower end portion of the diagonal member to which a rotatable clamp is attached. The clamp is fixed to the outer frame member by being tightly connected to a flange of the outer frame member, and has a means for attaching a horizontal scaffold to the outer surface of the curved roof plate.

  The curved surface scaffolding bracket according to the invention of claim 2 is a hook having a structure of being inserted into an insertion port provided in an outer frame material temporarily provided in contact with the outer surface of a curved roof plate of a steel structure, A vertical member attached to the back of the hook so as to be disposed along the flange of the outer frame member, a horizontal member, and a diagonally spanned between a lower end portion of the vertical member and an end portion of the horizontal member. It is a curved scaffold bracket having a triangular shape formed with a material, wherein the hook includes a slit, and a web of an outer frame material is fitted into the slit to prevent the outer frame material from falling off. And the upper piece of the vertical member and the end of the horizontal member on the outer frame member side are pivotally connected to a mounting piece provided on the back portion via a pin, and the vertical member is made of an outer frame member. A support member that abuts on the flange is provided at the bottom, and the lower end of the longitudinal member, the lower end of the diagonal member, and the The end of the flat member and the upper end of the diagonal member are connected to each other by a pin so as to be rotatable. The diagonal member has a two-plate structure, and each of the diagonal members includes a plurality of fixing holes. It has a structure in which it is fastened and fixed via pins at at least two places of the fixing hole in the overlap margin, and is provided with means for attaching a horizontal scaffold to the outer surface of the curved roof plate.

The curved scaffold bracket according to the invention of claim 3 is an inverted L-shaped attachment member having a structure in which the curved scaffold bracket of claim 1 or 2 is fixed in contact with the web of the outer frame member. The hook is inserted into a gap-like insertion port formed between the outer frame member and the flange, and is latched.

The curved surface scaffolding bracket according to the invention of claim 1 is a hook having a structure that is inserted into an insertion port provided in an outer frame material that is in contact with the outer surface of the curved roof plate of a steel structure and is hooked. A curved scaffold bracket formed by a horizontal member attached to a back portion of a hook, and a diagonal member spanned obliquely between an end of the horizontal member and a flange of the outer frame member, the hook being a back portion The outer frame material side end of the horizontal member is pivotally connected to the mounting piece provided on the pin through a pin, and a flat plate stopper is provided on the mounting piece and the pin connecting portion of the horizontal member. The stopper and the hook sandwich the web of the outer frame material to prevent the outer frame material from falling off,
The diagonal member has an upper end portion of the diagonal member connected to an end portion of the horizontal member through a pin so as to be rotatable, and a lower end portion of the diagonal member to which a rotatable clamp is attached. The clamp is tightly connected to the flange of the outer frame member and fixed to the outer frame member, and has means for attaching a horizontal scaffold to the outer surface of the curved roof plate.
It is a structure that can be separately attached to the outer frame material without fixing the bracket mounting member such as Necopyus to the outer surface of the roof plate of the outer tub, etc. After the welding amount, bracket scaffold construction, Necopyus removal work and removal It is possible to reduce the labor and cost required for nondestructive inspection. Also, the appearance after construction of the storage tank is good. Furthermore, it becomes possible to remove the bracket together with the outer frame material after the construction of the roof plate, thereby reducing the labor required for dismantling the bracket scaffold.
It is a structure that allows a horizontal scaffold to be attached to a curved surface without causing the diagonal material to protrude above the horizontal material, and it is safe without interfering with the installation of a net for preventing falling or falling. Further, it is not necessary to have a structure in which a plurality of bolt / nut fixing holes are provided in the diagonal member, unlike the conventional curved scaffold bracket.
The hook has a detachable structure, and can be easily installed by providing an insertion port by a notch or a hole in the outer frame material.
Since the stopper for preventing the drop-off is provided in the hook mounting portion, the hook does not come off from the outer frame material in a state where the hook is inserted into the insertion slot and is hooked.
Since the hook attachment portion is rotatably connected by a pin, the attachment angle with respect to the curved surface can be easily adjusted.
Compared with turnbuckles, screwed structures, etc., the structure is simple, the construction cost is low, and the length of the diagonal is easy to adjust.
Since the outer frame material can be used in place of the vertical material of the conventional scaffold bracket, the member cost can be reduced.

The curved surface scaffolding bracket according to the invention of claim 2 is a hook having a structure of being inserted into an insertion port provided in an outer frame material temporarily provided in contact with the outer surface of a curved roof plate of a steel structure, A vertical member attached to the back of the hook so as to be disposed along the flange of the outer frame member, a horizontal member, and a diagonally spanned between a lower end portion of the vertical member and an end portion of the horizontal member. It is a curved scaffold bracket having a triangular shape formed with a material, wherein the hook includes a slit, and a web of an outer frame material is fitted into the slit to prevent the outer frame material from falling off. And the upper piece of the vertical member and the end of the horizontal member on the outer frame member side are pivotally connected to a mounting piece provided on the back portion via a pin, and the vertical member is made of an outer frame member. A support member that abuts on the flange is provided at the bottom, and the lower end of the longitudinal member, the lower end of the diagonal member, The end of the flat member and the upper end of the diagonal member are connected to each other by a pin so as to be rotatable. The diagonal member has a two-plate structure, and each of the diagonal members includes a plurality of fixing holes. It is a structure that is fastened and fixed via pins in at least two places of the fixing hole in the overlap margin, and has means for attaching a horizontal scaffold to the outer surface of the curved roof plate,
It is a structure that can be separately attached to the outer frame material without fixing the bracket mounting member such as Necopyus to the outer surface of the roof plate of the outer tub, etc. After the welding amount, bracket scaffold construction, Necopyus removal work and removal It is possible to reduce the labor and cost required for nondestructive inspection. Also, the appearance after construction of the storage tank is good. Furthermore, it becomes possible to remove the bracket together with the outer frame material after the construction of the roof plate, thereby reducing the labor required for dismantling the bracket scaffold.
It is a structure that allows a horizontal scaffold to be attached to a curved surface without causing the diagonal material to protrude above the horizontal material, and it is safe without interfering with the installation of a net for preventing falling or falling.
The hook has a detachable structure, and can be easily installed by providing an insertion port by a notch or a hole in the outer frame material. The hook is provided with a slit, and when the hook is inserted into the insertion port and hooked, the web of the outer frame material is fitted into the slit and does not come off from the outer frame material.
Since the hook attachment portion is rotatably connected by a pin, the attachment angle with respect to the curved surface can be easily adjusted.
Compared with turnbuckles, screwed structures, etc., the structure is simple, the construction cost is low, and the length of the diagonal is easy to adjust.

The curved scaffold bracket according to the invention of claim 3 is an inverted L-shaped attachment member having a structure in which the curved scaffold bracket of claim 1 or 2 is fixed in contact with the web of the outer frame member. Since the hook is inserted into a gap-like insertion port formed between the flange of the outer frame material and latched,
By attaching an inverted L-shaped attachment member formed of a simple member to the outer frame member by welding, bolts, nuts, or the like, it can be easily attached to the outer frame member.
Further, the inverted L-shaped attachment member can be used repeatedly by being fixed to the outer frame member detachably with bolts and nuts.

It is whole longitudinal section explanatory drawing which shows the state which latched and attached the scaffold bracket 4 (16) for curved surfaces based on this invention to the outer frame material 14 of the roof plate 1 of a storage tank. It is perspective explanatory drawing which shows the structure which provided the insertion port 3 which inserts and hooks the hook 5 (17) of the scaffold bracket 4 (16) for curved surface to the outer frame material 14 of the outer peripheral part roof board 1b. It is explanatory drawing which shows each structural member of the scaffold bracket 4 for curved surfaces of a 1st example. It is explanatory drawing which shows the detailed structure of the scaffold scaffold 4 for curved surfaces of a 1st example. It is detailed explanatory drawing which shows the procedure (a)-(d) by which the hook 5 of the curved-surface scaffold bracket 4 of a 1st example is inserted in the insertion port 3 of the outer frame material 14, and is latched. It is explanatory drawing which shows the state which attached the scaffold bracket 4 for curved surfaces of the 1st example to the outer frame material 14 of (A) upper part, (B) intermediate part, and (C) lower part of the outer peripheral roof board 1b. It is explanatory drawing which shows each structural member of the scaffold bracket 16 for curved surfaces of a 2nd example. It is explanatory drawing which shows the detailed structure of the scaffold scaffold 16 for curved surfaces of a 2nd example. It is detail explanatory drawing which shows the procedure (e) and (f) which the hook 17 of the scaffold bracket 16 for curved surfaces of a 2nd example is inserted in the insertion port 3 of the outer frame material 14, and latched. It is explanatory drawing which shows the structure which attached the scaffold bracket 16 for curved surfaces of the 2nd example to the outer frame material 14 of (D) upper part, (E) middle part, and (F) lower part of the outer peripheral roof board 1b. It is perspective explanatory drawing which shows the example of the structure where the inverted L-shaped attachment member 29 was fixed to the outer frame material 14 of the outer peripheral roof plate 1b. FIG. 12 is a cross-sectional explanatory view illustrating an example of a procedure and an attachment method for attaching the inverted L-shaped attachment member 29 of FIG. 11 to the outer frame member 14. It is a perspective explanatory view showing the state where outer frame material 14 has been removed after assembly construction of outer tub roof plate 1. It is perspective explanatory drawing which shows the example of the structure of the bracket 32 which fixes and attaches the conventional Necopysu 31 to the roof board 1 by welding. It is explanatory drawing which shows the example of the structure of the conventional scaffold bracket 34 for curved surfaces.

An embodiment of a curved scaffold bracket 4 (16) according to the present invention will be described with reference to FIGS.
FIG. 1 shows an example of a state in which a curved scaffold bracket 4 (16) is installed on an outer tank roof plate 1 of a vertical cylindrical low-temperature storage tank.
The outer tub roof plate 1 of FIG. 1 is formed from a zenith roof plate 1a located at the uppermost portion and an outer peripheral roof plate 1b located at the remaining annular portion surrounding the zenith roof plate 1a. 2 is mounted on the top surface of the top angle 2a.
The shape of the zenith roof board 1a is a conical shape, a flat plate shape, a spherical shape, or the like.
The outer peripheral roof plate 1b is formed by rolling a flat plate so as to have a predetermined curvature or placing a flat plate on a temporary mount and pressing a shaped steel member having a predetermined curvature. This is a curved plate temporarily provided with an outer frame member 14 in contact with the outer surface for maintaining a predetermined curvature.
The outer frame material 14 is formed of a molded steel material such as a channel-shaped steel material, an I-shaped steel material, or an H-shaped steel material, and a curved surface scaffold bracket 4 (16) for an outer tank scaffold for constructing the outer tank roof plate 1. Is hung on the outside.

FIG. 2 is a perspective explanatory view showing a structure in which the insertion port 3 for inserting and hooking the hook 5 (17) of the curved scaffold bracket 4 (16) into the outer frame member 14 on the outer surface of the outer peripheral roof plate 1b is provided. is there.
FIG. 2 shows a state in which an outer frame member 14 for maintaining a predetermined curvature is in contact with and temporarily installed at the central portion in one longitudinal direction of the outer surface of the outer peripheral roof plate 1b. The outer frame member 14 is a temporary member for maintaining the curvature of the outer peripheral roof plate 1b during transportation, assembly, and completion, and is formed of a molded steel material such as a channel-shaped steel material, an I-shaped steel material, or an H-shaped steel material. It is a member. FIG. 2 shows an example in which an outer frame member 14 of a channel-shaped steel material is temporarily installed on the outer surface of the outer peripheral roof plate 1b. The outer frame member 14 is composed of upper and lower flanges 14a and side webs 14b.
The outer frame member 14 includes an insertion port 3 into which the hook 5 (17) of the curved surface scaffold bracket 4 (16) is inserted and hooked at a position where the curved surface scaffold bracket 4 is attached.
The insertion port 3 can employ various structures such as a holed structure in addition to the notch structure as shown in FIG.

FIG. 3 is an explanatory view showing components of the curved scaffold bracket 4 for the first case.
The curved scaffold bracket 4 of the first case includes a hook 5 inserted into the insertion port 3 of the outer frame member 14 of FIG. 2 and hooked, a horizontal member 8 attached to the back of the hook 5, and the horizontal member. 8 is a curved-surface scaffold bracket formed by a diagonal member 9 diagonally spanned between an end of 8 and a flange 14a of the outer frame member 14.
The hook 5 has an attachment piece 6 having a fixing hole 6a on the back, and the end of the horizontal member 8 on the outer frame member 14 side is rotatably connected to the attachment piece 6 via a pin 11. The structure is a structure that can be detached from the horizontal member 8.
The horizontal member 8 and the diagonal member 9 are provided with fixing holes 8a, 8b, 9a, 9b for removably inserting pins 11, 12, 13 through both ends of the horizontal member 8 and the diagonal member 9, respectively. Further, the horizontal member 8 is provided with a handrail strut standing member 15 extending vertically upward at an end portion.
The hook 5 is provided with a stopper 7 made of a flat plate at a connecting portion 6 and a pin 11 connecting portion at the end of the horizontal member 8 on the outer frame member 14 side, and the web 14b of the outer frame member 14 by the stopper 7 and the hook 5. This prevents the outer frame member 14 from falling off.
The diagonal member 9 includes a clamp 10 that is tightly coupled to the flange 14a of the outer frame member 14 at the lower end. The diagonal member 9 and the clamp 10 are connected to a fixing hole 10a of the clamp 10 and a fixing hole 9a at the lower end of the diagonal member 9 by detachably inserting a pin 13 therethrough.
Further, the positions and quantities of the fixing pieces 6 of the hook 5, the stopper 7, the horizontal member 8, and the diagonal member 9 are not limited to those described above, and an adjustment fixing hole (not shown) is separately provided. It is good also as a structure.

FIG. 4 is an explanatory view showing a detailed structure of the curved-surface scaffold bracket 4 of the first case in which the constituent members shown in FIG. 3 are connected and integrally formed.
The end of the horizontal member 8 on the outer frame member 14 side and the stopper 7 are connected to the mounting piece 6 on the back of the hook 5 by a pin 11 so as to be rotatable R.
The upper end portion of the diagonal member 9 is fastened and fixed to the end portion of the horizontal member 8 by a pin 12, and the clamp 10 is rotatably connected to the lower end portion of the diagonal member 9 by a pin 13 so as to be curved. A bracket 4 is formed.

FIG. 5 is a detailed explanatory view showing procedures (a) to (d) in which the hook 5 of the curved scaffold bracket 4 of the first case is inserted into the insertion port 3 of the outer frame member 14 and hooked.
(A) And (b) shows the state by which the hook 5 of the scaffold bracket 4 for curved surfaces was inserted and latched from the side surface of the insertion port 3 of the outer frame material 14. FIG.
(C) shows that the detachable pin 11 is inserted into the fixing hole 6a of the mounting piece 6 on the back of the hook 5, the end of the horizontal member 8 on the outer frame member 14 side, and the fixing hole 7a of the stopper 7, and is freely rotatable. The connected state is shown.
(D) shows a state in which the web 14b of the outer frame member 14 is held between the stopper 7 and the hook 5 so that the hook 5 does not fall off from the outer frame member 14. FIG.

FIG. 6 is an explanatory view showing a state in which the curved scaffold bracket 4 of the first case is attached to the outer frame member 14 at (A) upper part, (B) intermediate part, and (C) lower part of the outer peripheral roof plate 1b. .
As shown to (A)-(C), the inclination-angle of the outer peripheral part roof board 1b changes for every attachment position of the scaffold bracket 4 for curved surfaces. In the curved case scaffold bracket 4 of the first case, the hook 5 mounting portion at the end of the horizontal member 8 on the outer frame member 14 side and the clamp 10 mounting portion at the lower end of the diagonal member 9 are rotatably connected by pins. The outer frame member 14 can be attached horizontally at any attachment position of the outer frame member 14 on the outer surface of the roof panel 1b.
The curved surface scaffold bracket 4 of the first case has a structure in which the hook 5 and the clamp 10 are rotatably connected by pins, and the adjustment of the mounting angle is easy. Further, the curved scaffold bracket 4 of the first example is provided on the upper portion of the horizontal member 8 without providing a plurality of fixing holes in the diagonal member or newly forming a fixing hole, unlike the conventional curved scaffold bracket. It is possible to attach a horizontal scaffold to the curved surface without protruding the diagonal member 9.

The curved scaffold bracket 4 of the first example has the following effects.
It is a structure that can attach a horizontal scaffold to a curved surface without protruding the diagonal member 9 to the upper part of the horizontal member 8, and it is safe without interfering with the installation of a net for preventing fall and falling. . Further, it is not necessary to have a structure in which a plurality of bolt / nut fixing holes are provided in the diagonal member 9 as in a conventional curved scaffold bracket.
The hook 5 has a detachable structure, and can be easily installed by providing the insertion port 3 in the outer frame member 14 by notching or drilling.
Since the stopper 5 for preventing the drop off is provided at the hook 5 attachment portion, the hook 5 is not detached from the outer frame member 14 in a state where the hook 5 is inserted into the insertion port 3 and is hooked.
Since the hook 5 attachment portion is rotatably connected by the pin 11, the attachment angle with respect to the curved surface can be easily adjusted.
Compared with a turnbuckle or a screwed structure, the structure is simple, the construction cost is low, and the length of the diagonal member 9 can be easily adjusted.
Since the outer frame member 14 can be used in place of the vertical member of the conventional scaffold bracket, the member cost can be reduced.

FIG. 7 is an explanatory view showing each component member of the curved scaffold bracket 16 of the second case.
The curved-surface scaffold bracket 16 of the second example includes a hook 17 that is inserted into the insertion port 3 of the outer frame member 14 of FIG. 2 and is hooked on the outer frame member 14, and the outer frame member on the back of the hook 17. 14, the vertical member 19 attached so as to be disposed along the flange 14a, the horizontal member 20, and the diagonal member 21 which is slanted between the lower end portion of the vertical member 19 and the end portion of the horizontal member 20. It is the scaffold bracket for curved surfaces which exhibits the triangular shape formed by.
The hook 17 has a structure that can be detached from the vertical member 19 and the horizontal member 20, and a mounting piece 18 having a fixing hole 18 a is provided on the back of the hook 17.
Further, the length L of the hooking portion of the hook 17 is set to a length that can be hooked by being inserted into the insertion port 3 of the outer frame member 14 from the front.
The vertical member 19 is formed of a molded steel material such as an angle material, and a support member 19c formed of a flat steel or an angle material is provided below the vertical material 19. The vertical member 19 includes fixing holes 19a and 19b through which pins are detachably inserted at the upper end portion and the lower end portion.
Further, the horizontal member 20 includes fixing holes 20a and 20b through which pins are detachably inserted at both ends. Further, the horizontal member 20 is provided with a handrail strut standing member 28 extending vertically upward at the end.
The diagonal member 21 is composed of two plates of an upper diagonal member 21a and a lower diagonal member 21c, and each plate is provided with a plurality of fixing holes 21b and 21d.
Further, the position and quantity of the fixing holes of the mounting piece 18, the vertical member 19, the horizontal member 20, and the diagonal member 21 of the hook 17 are not limited to those described above, and an adjusting fixing hole (not shown) is separately provided. It is good also as a structure.

FIG. 8 is an explanatory view showing the detailed structure of the curved surface scaffold bracket 16 of the second case in which the constituent members shown in FIG. 7 are connected and integrally formed.
An upper end portion of the vertical member 19 and an end portion on the outer frame member 14 side of the horizontal member 20 are connected to the mounting piece 18 on the back of the hook 17 by a pin 22 so as to be rotatable R, and the lower end portion of the vertical member 19 and the The lower end portion of the diagonal member 21 and the end portion of the horizontal member 20 and the upper end portion of the diagonal member 21 are rotatably connected by pins 26 and 23.
The diagonal member 21 is composed of two plates, an upper diagonal member 21a and a lower diagonal member 21c, and each diagonal member 21a, 21c has fixing holes 21b, 21d at a plurality of locations. The two diagonal members 21a and 21c have a structure in which the overlap margin is adjusted so that the curved surface scaffold bracket 16 is horizontally attached to the curved surface, and the pins 24 and 25 are inserted through at least two positions of the fixing holes 21b and 21d. The structure is fastened and fixed.
Further, various lengths of the upper diagonal member 21a and the lower diagonal member 21c, the number of fixing holes, the interval, and the like can be adopted according to the mounting state of the curved surface scaffold bracket 16.

FIG. 9 is a detailed explanatory view showing procedures (e) and (f) in which the hook 17 of the curved scaffold bracket 16 of the second case is inserted into the insertion port 3 of the outer frame member 14 and hooked.
(E) shows the outer frame member 14 having the hook 17 having the slit 27 at the center in the width direction or the vicinity thereof, and the insertion port 3 into which the hook 17 is inserted and hooked.
(F) The hook 17 is inserted from the front of the insertion port 3 so that the hook 17 does not fall off the outer frame member 14, and the web 14 b of the outer frame member 14 is fitted into the slit 27 of the hook 17 to be hooked. Shows the state.
By adopting the hook 17 having the slit 27, it is possible to prevent the outer frame member 14 from falling off without separately providing a member such as the stopper 7 or the like.

FIG. 10 is an explanatory view showing a state in which the curved scaffold bracket 16 of the second case is attached to the outer frame member 14 at (D) upper part, (E) intermediate part, and (F) lower part of the outer peripheral roof plate 1b. .
As shown to (D)-(F), the inclination-angle of the outer peripheral part roof board 1b changes for every attachment position of the scaffold bracket 16 for curved surfaces. The curved surface scaffold bracket 16 of the second case has a structure in which the hook 17 mounting portion is rotatably connected by the pin 22, and the mounting angle can be easily adjusted. In addition, since it is possible to adjust the overall length of the diagonal member 21 by changing the overlapping margin of the two diagonal members 21a and 21c, a scaffold that is horizontal to the outer frame member 14 on the outer surface of the outer peripheral roof plate 1b. It is possible to install.
In the curved case scaffold bracket 16 of the second case, the hook 17 mounting portion is pivotally connected by a pin 22 so that the mounting angle can be easily adjusted. Further, unlike the conventional curved surface scaffold bracket 16, the curved surface scaffold bracket 16 of the second example can attach a horizontal scaffold to the curved surface without protruding the diagonal material 21 on the horizontal material 20.

The curved surface scaffold bracket 16 of the second example has the following effects.
It is a structure that allows a horizontal scaffolding to be attached to a curved surface without protruding the diagonal member 21 to the upper part of the horizontal member 20, and is safe without interfering with the installation of a net for preventing crashing or falling. .
The hook 17 has a detachable structure, and can be easily installed by providing the insertion port 3 in the outer frame member 14 by notching or punching. A slit 27 is provided in the hook 17, and when the hook 5 is inserted into the insertion port 3 to be hooked, the web 14 b of the outer frame member 14 is fitted into the slit 27, and the outer frame member 14. It will not come off.
Since the hook 17 mounting portion is rotatably connected by the pin 22, the mounting angle with respect to the curved surface can be easily adjusted.
Compared with a turnbuckle or a screwed structure, the structure is simple, the construction cost is low, and the length of the diagonal member 21 can be easily adjusted.

  The curved surface scaffold bracket 16 of the second example may have a structure in which a fixing hole (not shown) is provided in the web 14b of the outer frame member 14 instead of using the vertical member 19, and the lower end portion of the diagonal member 21 is connected by a pin. good.

FIG. 11 is an explanatory perspective view showing an example of a structure in which an inverted L-shaped attachment member 29 is fixed to the outer frame member 14 of the outer peripheral roof plate 1b and an insertion port 30 for attaching a curved scaffold bracket is provided. is there.
(G) in FIG. 11 shows the detailed structure of the above figure, and the inverted L-shaped attachment member 29 shown in (g) is fixed in contact with the web 14b of the outer frame member 14 as shown in (h). A hook of the curved surface bracket 4 (16) as shown in (i) at a gap-like insertion port 30 formed between the inverted L-shaped attachment member 29 and the flange 14a of the outer frame member 14. 5 (17) is inserted and hooked.

FIG. 12 is a cross-sectional explanatory view showing an example of a procedure and an attachment method for attaching the inverted L-shaped attachment member 29 of FIG. 11 to the outer frame member 14.
The inverted L-shaped attachment member 29 is a member composed of a web 29a, a flange 29b, and a hooking portion 29c. The attachment member 29 is inserted into the outer frame member 14 from above as shown in FIG. The hook portion 29c is brought into contact with the edge of the flange 14a of the outer frame member 14 so as to form the insertion port 30 into which the hook 5 (17) of FIG. In a state in which the web 29a and the web 14b of the outer frame member 14 are in contact with each other, the structure is fixed by at least two bolts / nuts 29e, 29f, etc., as shown in (k) by welding 29d or (l). is there.
The inverted L-shaped attachment member 29 is formed of a simple member, and can be easily fixed to the outer frame member 14 formed of a channel material or the like by welding 29d, bolts / nuts 29e, 29f, or the like. Further, by fixing with the bolts and nuts 29e and 29f, the inverted L-shaped attachment member 29 can be attached and detached, and can be used repeatedly.
It is also possible to hook a conventional curved scaffold bracket to the inverted L-shaped attachment member 29 and fix it.
The shape and fixing method of the attachment member 29 are not limited to those described above, and various shapes and fixing methods can be employed.

FIG. 13 is a perspective explanatory view showing a state in which the outer frame member 14 is removed after the assembly construction of the outer tub roof plate 1.
As shown in FIG. 13, after the outer tub roof plate 1 is constructed, the outer frame member 14 joined to the outer surface of the outer peripheral roof plate 1 b is dismantled and removed.
As described above, since the insertion port 3 or the inverted L-shaped attachment member 29 for attaching the curved scaffold bracket 4 (16) to the outer frame member 14 is provided, a bracket attachment member such as Necopyus 31 is separately provided. There is no need to weld and fix to the outer surface of the roof slab 1 etc. of the outer tub, and it is possible to reduce the labor and cost required for the welding amount, the construction of the bracket scaffold, the removal work of the Necopys 31, and the nondestructive inspection after the removal. Also, the appearance after construction of the storage tank is good. Furthermore, it becomes possible to remove the bracket together with the outer frame member 14 after the construction of the roof plate 1, and the labor required for the work of dismantling the bracket scaffold is reduced.

It is also possible to adopt a bracket structure in which the structures of the respective parts of the bracket 4 (16) of the first and second examples shown in FIGS. 1 to 13 are combined. For example, a structure in which the hook 17 having the slit 27 and the clamp 10 are connected to the lower end portion of the diagonal member 9, or a structure in which the hook 5 to which the stopper 7 for preventing dropping is connected and the two-layered diagonal member 21 are combined. It is also possible to employ a bracket or the like.
Moreover, in FIGS. 1-13, although the example applied to the outer tank roof plate of a vertical cylindrical low-temperature storage tank was shown, the bracket of this application is applicable to the bracket scaffold of various steel structures. .
Furthermore, the present invention is not limited to the outer frame material 14 of the channel material, and can also be applied to an outer frame material formed of I-type steel material, H-type steel material, or the like.

The curved surface scaffold bracket and its mounting structure according to the present invention can be applied to bracket scaffolds of various steel structures.

DESCRIPTION OF SYMBOLS 1 Roof board 1a Zenith part roof board 1b Peripheral part roof board 2 Side board 2a Top angle 3 Insertion port 4 Scaffold bracket 5 for curved surface of 1st case Hook 6 Mounting piece 6a Fixing hole 7 Stopper 7a Fixing hole 8 Horizontal member 8a Fixing hole 8b Fixing hole 9 Diagonal material 9a Fixing hole 9b Fixing hole 10 Clamp 10a Fixing hole 11 Pin 12 Pin 13 Pin 14 Outer frame material 14a Flange 14b Web 15 Handrail strut standing member 16 Curved scaffold bracket 17 in the second case 17 Hook 18 Installation Piece 18a Fixing hole 19 Vertical member 19a Fixing hole 19b Fixing hole 19c Support member 20 Horizontal member 20a Fixing hole 20b Fixing hole 21 Oblique member 21a Upper diagonal member 21b Fixing hole 21c Lower diagonal member 21d Fixing hole 22 Pin 23 Pin 24 Pin 25 Pin 26 Pin 27 Slit 28 Handrail post standing member 29 Upside down L-shaped attachment member 29a Web 29b Flange 29c Hook 29d Welding 29e Bolt / Nut 29f Bolt / Nut 30 Insert 31 Necopys 32 Conventional scaffold bracket 32a Hook 33 Scaffold plate 34 Conventional curved scaffold bracket 35 Vertical member 36 Horizontal member 37 Diagonal member 37a Fixed Hole 38 Bolt / Nut 39 Handrail post standing member

L Length of hook 17 hooking part R Rotation

Claims (3)

A hook having a structure that is inserted into an insertion port provided in a temporary outer frame member that is in contact with an outer surface of a curved roof plate of a steel structure and is hooked, a horizontal member attached to a back portion of the hook, and the horizontal member A curved scaffolding bracket formed obliquely between an end portion of the outer frame member and a flange of the outer frame member, wherein the hook is attached to a mounting piece provided on a back portion of the outer frame member of the horizontal member. The end portion on the side is rotatably connected via a pin, and a stopper made of a flat plate is provided on the pin connecting portion of the mounting piece and the horizontal member, and the web of the outer frame material is provided by the stopper and the hook. The diagonal member is configured to be prevented from falling off from the outer frame member, and the diagonal member has an upper end portion of the diagonal member connected to an end portion of the horizontal member via a pin so as to be rotatable, and the diagonal member. A rotatable clamp is attached to the lower end of the material via a pin, and the clamp A structure in Tightened the flange of the outer frame member is fixed to the outer frame member, a curved scaffolding bracket, characterized in that it comprises a means for attaching the horizontal scaffold curved roof plate outer surface.
A hook having a structure that is inserted into an insertion port provided in a temporarily installed outer frame member in contact with the outer surface of the curved roof plate of the steel structure, and is hooked along a flange of the outer frame member on the back of the hook A curved scaffolding bracket having a triangular shape formed by a vertical member attached so as to be arranged, a horizontal member, and a diagonal member spanned obliquely between a lower end portion of the vertical member and an end portion of the horizontal member. The hook includes a slit, and a web of an outer frame member is fitted into the slit to prevent the outer frame member from falling off, and the vertical member is attached to an attachment piece provided on the back. The upper end portion and the end portion of the horizontal member on the outer frame member side are rotatably connected via a pin, and the vertical member is provided with a support member in contact with the flange of the outer frame member at the lower portion, and the vertical member The lower end of the material, the lower end of the diagonal material, the end of the horizontal material, and the upper end of the diagonal material are rotated by a pin. The diagonal member has a two-plate structure, and each diagonal member has a plurality of fixing holes, and is fastened and fixed via pins at at least two positions of the fixing holes at an arbitrary overlap margin. A curved scaffold bracket characterized by having a structure and means for attaching a horizontal scaffold to a curved roof plate outer surface.
The curved scaffold bracket according to claim 1 or 2, wherein a gap formed between an inverted L-shaped mounting member and a flange of the outer frame member, which is configured to contact and fix the outer frame member web. The curved-surface scaffold bracket according to claim 1 or 2, wherein the hook is inserted into a slot and is hooked.

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