JP6628225B2 - Scaffold bracket for curved surface - Google Patents

Description

  The present invention relates to a structure of a scaffold bracket attached to an outer surface of a storage tank such as a curved roof shingle.

When a bracket scaffold is provided on a roof plate 1, a side plate 2, or the like such as a storage tank, 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 is usually fixed by welding a bracket attachment member such as a Nepex 31 to an outer surface of a vertically-equipped side plate 2 or the like of a steel structure such as a storage tank. This is a structure in which a hook 32a is inserted into the base 31 from above and hooked.
A conventional curved scaffold bracket 34 shown in FIG. 15 is a bracket used when scaffolds are provided on the outer surface of a curved roof shingle 1 or the like of a steel structure such as a storage tank. 1, a bracket mounting member such as Necopys 31 is fixed to the outer surface by welding, and a hook 35a is inserted into the Necopyse 31 from above and hooked. This conventional curved scaffold bracket 34 has a plurality of fixing holes 37a in the diagonal member 37, and positions the bolts and nuts 38 of the horizontal member 36 to be fastened and fixed in accordance with the angle of the curved surface on which the bracket is mounted. This is a structure that changes the intersection angle between the vertical member 35 and the horizontal member 36 to adjust the scaffold horizontally.

Patent Literature 1 (Japanese Utility Model Laid-Open No. 01-057249) discloses a bracket mounting device for a scaffold in a tank, which has a mounting seat in which a pipe mounting portion is radially fixed to an opening on the bottom surface of a hopper of a cylindrical tank body. A structure of a scaffold bracket mounting device for a scaffold in a tank is disclosed, in which a radiation tube is pivotally attached to a mounting seat and a scaffold bracket is fitted to an upper end of each radiation tube of a radiation tube base.

  Patent Literature 2 (Japanese Utility Model Publication No. 02-046600) discloses a “spherical tank opening / closing scaffold” in which a temporary scaffold on the outer peripheral surface of a spherical tank has a multi-stage scaffold structure only in the vertical direction along a welded vertical seam. A structure of a hanging scaffold is disclosed in which a hanging piece is fixed to an upper stage of a main body, a connecting angle is fixed to the hanging piece with bolts, a bracket is attached to the connecting angle, and a scaffold plate or the like that opens and closes the bracket is incorporated in the bracket. .

  Patent Document 3 (No. 3152426) "Structure of scaffold bracket for hold or ballast tank" includes a vertical member, a horizontal member, and an oblique member such that the crossing angle between the vertical member and the horizontal member is variable. A structure of a scaffold bracket having a length adjusting means capable of adjusting the length of a side of a triangle in at least one of the above is disclosed.

Patent Document 4 (Japanese Patent No. 3571866) entitled "Three-dimensional bracket scaffold for laminated wood truss and its bracket" includes a turnbuckle mechanism between a pair of engaging plates engaging with an upper edge of the laminated wood on which the truss is formed. A mechanically interposed mounting hardware, the base end of the support arm is pivotally mounted on one engagement plate of the mounting hardware, and between the other engagement plate and the middle of the support arm. A structure of a bracket equipped with a cane-shaped angle-adjustable hardware whose length can be changed is disclosed.

Patent Document 5 (Japanese Patent No. 3888593) “Slope Scaffold Bracket” includes a horizontal member, a mounting member, a diagonal member, and a handrail pillar, and one end of the horizontal member can be rotated above the mounting member. To the lower part of the mounting material, one end of the diagonal material is rotatably connected, and the other end of the horizontal material is rotatably connected to the lower part of the handrail pillar, and in the axial direction of the diagonal material A structure of a slope scaffolding bracket including a plurality of support holes, wherein a support hole selected from the plurality of support holes and the other end of the horizontal member are connected by a detachable pin and integrated therewith is disclosed. .

No. 01-057249 No. 02-046600 No. 3152426 Patent No. 3571866 Patent No. 3888593

As shown in FIG. 14, the scaffold bracket attached to the outer surface of the curved roof shingle 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 to the outer surface of the shingle 1 or the like. This requires time and effort to remove the necopys 31 using a grinder and to inspect the traces that have been removed.
In addition, as shown in FIG. 15, the conventional curved scaffold bracket 34 is provided with fixing holes 37a for bolts and nuts 38 at regular intervals in the diagonal member 37, and the fixing holes 37a to be fastened and fixed by the bolts and nuts 38 are changed. In this structure, the horizontal angle is adjusted by adjusting the intersection angle between the vertical member 35 and the horizontal member 36. If the intersection angle does not match the angle of the curved surface of the bracket 34 mounting portion, the curved surface scaffold bracket 34 is attached to the horizontal member 36. It has to be provided in an inclined state, or a hole for fixing a bolt has to be newly formed in the oblique member 37 to adjust the horizontality, and there has been a problem in safety and workability.
Further, as shown in FIG. 15, when the conventional scaffold bracket 34 for curved surface is used to secure a horizontal position, the oblique member 37 projects to the upper part of the horizontal member 36, which is a hindrance when attaching a fall / fall prevention net or the like. And there was a problem with safety.

Patent Literature 1 “Scatch mounting device for scaffold in tank” relates to a device capable of mounting a scaffold bracket without welding a metal fitting for fixing the scaffold bracket to an inner wall surface of the tank. It does not relate to the structure of a bracket that is mounted horizontally on a curved surface.
Further, it does not relate to a structure of a bracket capable of adjusting a mounting angle and a length of a diagonal member according to an angle of a curved surface.

Patent Literature 2 “Opening / closing scaffold of spherical tank” relates to a structure of a multi-stage bracket scaffold for fixing an angled suspending piece for connecting a bracket to the outer surface of a spherical shell plate. It does not relate to the structure of a bracket that can be installed without welding and fixing.
Further, it does not relate to a structure of a bracket capable of adjusting a mounting angle and a length of a diagonal member according to an angle of a curved surface.

Patent Document 3 “Structure of scaffolding bracket for hold or ballast tank” has a double pipe structure in which a diagonal member is stretchable and can be fixed at any overlapping margin, and a scaffold plate is horizontally mounted on an inclined wall surface. It relates to scaffolding brackets, but has a structure in which the scaffolding bracket is fixed to a support member consisting of a ladder device on the wall surface, and is hooked to the insertion port of the temporarily installed outer frame material in contact with the roof plate etc. of the storage tank It does not relate to the structure of the bracket to be used.
Further, the invention does not relate to the structure of a scaffold bracket in which a hook is rotatably connected to a vertical member or a horizontal member.

Patent Literature 4 “Three-dimensional bracket scaffold for laminated truss truss and its bracket” relates to a bracket scaffold that is horizontally mounted on a large laminated truss truss constituting a roof, but the truss is extended by operating a turnbuckle mechanism. It does not relate to the structure of a bracket that abuts on a roof plate or the like of a storage tank and that is hooked on an insertion port of a temporarily provided outer frame material.
Also, it does not relate to the structure of the scaffolding bracket that allows the entire length of the diagonal member to be adjusted by the two-plate diagonal member, nor does it relate to a bracket having a structure in which the diagonal member does not project above the horizontal member.

Patent Literature 5 "Slope scaffold bracket" has a plurality of support holes in a diagonal material, and connects the selected support holes with pins to adjust an angle between a horizontal material and a mounting material to mount a horizontal scaffold. The present invention relates to the structure of the bracket, but does not relate to the structure of the bracket having the clamp at the lower end of the diagonal member.
Also, it does not relate to the structure of a scaffolding bracket capable of adjusting the length of the entire diagonal member by using a two-plate diagonal member, nor to the bracket having a structure in which the diagonal member does not protrude above the horizontal member. .

An object of the present invention has been made in view of the above-mentioned problems of the related art, and does not weld and fix a bracket attachment member such as necopyse to a curved roof plate or the like of a steel structure. An object of the present invention is to provide a scaffold bracket for a curved surface, which is excellent in workability, economy, and safety, to which a scaffold can be attached.

The curved scaffold bracket according to the first aspect of the present invention includes a hook having a structure in which it is inserted into an insertion hole provided in a temporarily provided outer frame member in contact with the curved outer surface of a steel structure and hooked. A curved scaffold bracket formed by a horizontal member attached to the back of a hook, and a diagonal member extending obliquely between an end of the horizontal member and a flange of the outer frame member, wherein the hook is a back portion. A structure in which an end of the horizontal member on the outer frame member side is rotatably connected to a mounting piece provided at a pin via a pin, and a stopper formed of a flat plate is provided at a pin connecting portion between the mounting piece and the horizontal member. A structure in which the stopper and the hook sandwich the web of the outer frame material to prevent the web from falling off the outer frame material,
The upper end of the diagonal member is rotatably connected to the end of the horizontal member via a pin, and a rotatable clamp is attached to the lower end of the diagonal member via a pin, The clamp is fastened to the flange of the outer frame member and is fixed to the outer frame member, and is provided with a means for attaching a horizontal scaffold to the outer surface of the curved shingle.

  The curved scaffold bracket according to the second aspect of the present invention includes a hook having a structure that is inserted into an insertion hole provided in a temporarily provided outer frame material in contact with the curved roof shingle outer surface of a steel structure and is hooked. 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 an oblique bridge extending obliquely between a lower end portion of the vertical member and an end portion of the horizontal member. A scaffold bracket for a curved surface having a triangular shape formed with a material, wherein the hook has a slit, and a web of an outer frame material is fitted into the slit to prevent the hook from falling off from the outer frame material. And an upper end of the vertical member and an end of the horizontal member on the outer frame member side are rotatably connected to a mounting piece provided on the back via a pin, and the vertical member is formed of an outer frame member. A support member is provided at a lower portion that contacts the flange, and the lower end of the longitudinal member and the lower end of the diagonal member and the An end of a flat material and an upper end of the diagonal member are rotatably connected by pins. The diagonal member has a two-plate structure, and each of the diagonal members has a plurality of fixing holes. At least two portions of the fixing holes are fastened and fixed via pins at the overlapping margin, and a means for attaching a horizontal scaffold to a curved roof shingle outer surface is provided.

According to a third aspect of the present invention, there is provided a scaffolding bracket for curved surfaces, wherein the scaffolding bracket for curved surfaces according to claim 1 or 2 has an inverted L-shaped mounting member having a structure in which the scaffolding bracket abuts against the web of the outer frame material and is fixed. The present invention is characterized in that the hook is inserted into a gap-shaped insertion opening formed between the flange of the outer frame member and the hook.

The curved scaffold bracket according to the first aspect of the present invention includes a hook having a structure in which it is inserted into an insertion hole provided in a temporarily provided outer frame member in contact with the curved outer surface of a steel structure and hooked. A curved scaffold bracket formed by a horizontal member attached to the back of a hook, and a diagonal member extending obliquely between an end of the horizontal member and a flange of the outer frame member, wherein the hook is a back portion. A structure in which an end of the horizontal member on the outer frame member side is rotatably connected to a mounting piece provided at a pin via a pin, and a stopper formed of a flat plate is provided at a pin connecting portion between the mounting piece and the horizontal member. A structure in which the stopper and the hook sandwich the web of the outer frame material to prevent the web from falling off the outer frame material,
The upper end of the diagonal member is rotatably connected to the end of the horizontal member via a pin, and a rotatable clamp is attached to the lower end of the diagonal member via a pin, The clamp is fastened to the flange of the outer frame material and fixed to the outer frame material, and has means for attaching a horizontal scaffold to the outer surface of the curved roof shingle.
It is a structure that can be attached to the outer frame material without welding and fixing the bracket mounting member such as Necopys separately to the outer surface of the roof shingle of the outer tank, etc. Labor and cost for non-destructive inspection of the system can be reduced. In addition, the appearance after the construction of the storage tank is good. Further, it is possible to remove the bracket together with the outer frame material after the roof shingle is constructed, and the labor required for disassembling the bracket scaffold is reduced.
It is a structure that allows a horizontal scaffold to be attached to a curved surface without projecting the diagonal material to the upper part of the horizontal material, and is safe without being obstructed when attaching a net for preventing fall and fall. Further, it is not necessary to adopt a structure in which a plurality of bolt / nut fixing holes are provided in the diagonal material as in the conventional curved scaffold bracket.
The hook has a detachable structure, and can be easily installed by providing a notch or a hole in the outer frame material.
Since the hook attachment portion is provided with a stopper for preventing the hook from falling off, the hook does not come off the outer frame member while being hooked by being inserted into the insertion slot.
Since the hook mounting portion is rotatably connected with the pin, the mounting angle with respect to the curved surface can be easily adjusted.
The structure is simpler than a turnbuckle or a screw-in structure, etc., the construction cost is low, and the length of the diagonal member can be easily adjusted.
Since the outer frame member can be used as a substitute for the vertical member of the conventional scaffold bracket, the cost of members can be reduced.

The curved scaffold bracket according to the second aspect of the present invention is a hook having a structure in which it is inserted into an insertion hole provided in a temporarily provided outer frame material in contact with the curved outer surface of a roof structure of a steel structure, and the hook is attached to the hook. 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 an oblique bridge extending obliquely between a lower end portion of the vertical member and an end portion of the horizontal member. A scaffold bracket for a curved surface having a triangular shape formed with a material, wherein the hook has a slit, and a web of an outer frame material is fitted into the slit to prevent the hook from falling off from the outer frame material. And an upper end of the vertical member and an end of the horizontal member on the outer frame member side are rotatably connected to a mounting piece provided on the back via a pin, and the vertical member is formed of an outer frame member. A support member provided in contact with the flange is provided at a lower portion, and a lower end of the vertical member, a lower end of the diagonal member, and An end of a flat material and an upper end of the diagonal member are rotatably connected by pins. The diagonal member has a two-plate structure, and each of the diagonal members has a plurality of fixing holes. At least two portions of the fixing holes are fastened and fixed via pins at the overlap margin, and a means for attaching a horizontal scaffold to a curved roof shingle outer surface is provided.
It is a structure that can be attached to the outer frame material without welding and fixing the bracket mounting member such as Necopys separately to the outer surface of the roof shingle of the outer tank, etc. Labor and cost for non-destructive inspection of the system can be reduced. In addition, the appearance after the construction of the storage tank is good. Further, it is possible to remove the bracket together with the outer frame material after the roof shingle is constructed, and the labor required for disassembling the bracket scaffold is reduced.
It is a structure that allows a horizontal scaffold to be attached to a curved surface without projecting the diagonal material to the upper part of the horizontal material, and is safe without being obstructed when attaching a net for preventing fall and fall.
The hook has a detachable structure, and can be easily installed by providing 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 slot and hooked, the web of the outer frame material is fitted in the slit, and does not come off from the outer frame material.
Since the hook mounting portion is rotatably connected with the pin, the mounting angle with respect to the curved surface can be easily adjusted.
The structure is simpler than a turnbuckle or a screw-in structure, etc., the construction cost is low, and the length of the diagonal member can be easily adjusted.

According to a third aspect of the present invention, there is provided a scaffolding bracket for curved surfaces, wherein the scaffolding bracket for curved surfaces according to claim 1 or 2 has an inverted L-shaped mounting member having a structure in which the scaffolding bracket abuts against the web of the outer frame material and is fixed. Since the structure is such that the hook is inserted into the gap-shaped insertion port formed between the outer frame material and the flange, and is hooked,
By fixing an inverted L-shaped mounting member formed of a simple member to the outer frame material by welding, bolts, nuts, or the like, the mounting member can be easily mounted on the outer frame material.
The inverted L-shaped mounting member can be repeatedly used by being detachably fixed to the outer frame member with bolts and nuts.

It is whole longitudinal section explanatory drawing which shows the state which attached the scaffold bracket 4 (16) for curved surfaces which concerns on this invention to the outer frame material 14 of the roof panel 1 of a storage tank. It is a perspective explanatory view which shows the structure in which the hook 3 (17) of the scaffold bracket 4 (16) for curved surfaces was inserted and hooked in the outer frame material 14 of the outer surface of the outer peripheral roof plate 1b. It is explanatory drawing which shows each component of the scaffold bracket 4 for curved surfaces of the 1st example. It is explanatory drawing which shows the detailed structure of the scaffold bracket 4 for curved surfaces of the 1st example. It is detailed explanatory drawing which shows the procedure (a)-(d) which hook 5 of the scaffold bracket 4 for curved surfaces of the 1st example is inserted in the insertion opening 3 of the outer frame material 14, and is latched. It is explanatory drawing which shows the state which attached the scaffolding 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 part roof plate 1b. It is explanatory drawing which shows each structural member of the scaffold bracket 16 for curved surfaces of the 2nd example. It is explanatory drawing which shows the detailed structure of the scaffolding bracket 16 for curved surfaces of the 2nd example. It is detailed explanatory drawing which shows the hook 17 of the scaffolding bracket 16 for curved surfaces of the 2nd example, and is inserted in the insertion opening 3 of the outer frame material 14, and the procedure (e) and (f) which are latched. It is explanatory drawing which shows the structure which attached the scaffolding 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 part shingle 1b. It is a perspective explanatory view which shows the example of the structure in which the inverted L-shaped attachment member 29 was fixed to the outer frame material 14 of the outer peripheral part roof plate 1b. FIG. 12 is an explanatory sectional view showing a procedure and an example of a method of 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 was removed after assembling and building of outer tub roof panel 1. It is a perspective explanatory view which shows the example of the structure of the bracket 32 which attaches the conventional Necopys 31 to the roof plate 1 by welding and fixing. 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 in which a scaffold bracket 4 (16) for a curved surface is installed on an outer tank roof plate 1 of a vertical cylindrical low-temperature storage tank.
1 is formed of a zenith roof shingle 1a located at the uppermost part and an outer peripheral shingle 1b located at the remaining annular part surrounding the zenith shingle 1a. 2 is mounted on the upper surface of the top angle 2a.
The shape of the zenith roof plate 1a is a conical shape, a flat plate shape, a missing ball shape, or the like.
The outer peripheral shingle 1b is formed by rolling a flat plate so as to have a predetermined curvature or by placing a flat plate on a temporary mounting base and pressing a shaped steel material having a predetermined curvature. , A curved plate temporarily attached with an outer frame member 14 for maintaining a predetermined curvature on the outer surface.
The outer frame member 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 is a curved scaffold bracket 4 (16) for an outer tank scaffold for constructing the outer tank roof shingle 1. Is hung on the outer surface.

FIG. 2 is a perspective explanatory view showing a structure in which the insertion port 3 for inserting the hook 5 (17) of the curved scaffolding bracket 4 (16) into the outer frame material 14 on the outer surface of the outer peripheral roofing plate 1b and hooking the same is provided. is there.
FIG. 2 shows a state in which an outer frame member 14 for maintaining a predetermined curvature is abutted at a central portion in one longitudinal direction of the outer surface of the outer peripheral roof plate 1b and is temporarily provided. The outer frame member 14 is a temporary member for maintaining the curvature of the outer peripheral shingle 1b during transportation, assembling, and after completion, and is formed of a molded steel material such as a channel 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 material 14 of a channel-shaped steel material is temporarily provided 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 is provided with the insertion opening 3 into which the hook 5 (17) of the curved scaffolding bracket 4 (16) is inserted and hooked at a position where the curved scaffolding bracket 4 is attached.
The insertion port 3 can adopt various structures such as a hole-drilling structure other than the notch structure as shown in FIG.

FIG. 3 is an explanatory view showing components of the curved scaffold bracket 4 of the first example.
The curved scaffold bracket 4 of the first example includes a hook 5 which is inserted into and inserted into the insertion port 3 of the outer frame member 14 of FIG. 2, a horizontal member 8 attached to the back of the hook 5, and the horizontal member. 8 is a curved scaffold bracket formed by an oblique member 9 that is obliquely bridged between an end of the outer frame member 8 and a flange 14a of the outer frame member 14.
The hook 5 has a mounting piece 6 having a fixing hole 6a at the back, and the end of the horizontal member 8 on the outer frame 14 side is rotatably connected to the mounting piece 6 via a pin 11. It is a structure that can be removed from the horizontal member 8.
The horizontal member 8 and the diagonal member 9 are provided with fixing holes 8a, 8b, 9a, 9b at both ends thereof for detachably inserting the pins 11, 12, 13 and connecting them rotatably. Further, the horizontal member 8 has a handrail support upright member 15 extending vertically upward at an end.
The hook 5 has a stopper 7 made of a flat plate at a connecting portion of the pin 11 at the end of the mounting piece 6 and the horizontal member 8 on the outer frame member 14 side, and the stopper 7 and the hook 5 serve as a web 14b of the outer frame member 14. And is prevented from falling off from the outer frame member 14.
The diagonal member 9 has a clamp 10 at the lower end thereof, which is fastened to the flange 14a of the outer frame member 14. The pin 13 is detachably inserted into the fixing hole 10a of the clamp 10 and the fixing hole 9a at the lower end of the diagonal member 9, and the diagonal member 9 and the clamp 10 are connected to each other.
Further, the positions and the number of fixing holes of the mounting piece 6, the stopper 7, the horizontal member 8, and the oblique member 9 of the hook 5 are not limited to those described above, and fixing holes (not shown) for adjustment are separately provided. It is good also as a structure.

FIG. 4 is an explanatory view showing a detailed structure of the curved scaffold bracket 4 of the first example in which the constituent members shown in FIG. 3 are connected and integrally formed.
The end of the horizontal member 8 on the side of the outer frame member 14 and the stopper 7 are rotatably connected to the mounting piece 6 at the back of the hook 5 by a pin 11.
An upper end portion of the diagonal member 9 is fastened and fixed to an end portion of the horizontal member 8 with a pin 12, and a clamp 10 is rotatably connected to a lower end portion of the diagonal member 9 with a pin 13 so as to be freely rotated. 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 example is inserted into the insertion port 3 of the outer frame member 14 and is hooked.
(A) and (b) show a state where the hook 5 of the curved scaffold bracket 4 is inserted from the side of the insertion port 3 of the outer frame member 14 and is hooked.
(C), a detachable pin 11 is inserted into the fixing hole 6a of the mounting piece 6 at the back of the hook 5, the end of the horizontal member 8 on the side of the outer frame member 14 and the fixing hole 7a of the stopper 7, and is freely rotatable. Shows the state connected to.
(D) shows a state where 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 the outer frame member 14.

FIG. 6 is an explanatory view showing a state in which the curved scaffold bracket 4 of the first example is attached to the outer frame member 14 at the upper part (A), the middle part (B), and the lower part (C) of the outer peripheral roof plate 1b. .
As shown in (A) to (C), the inclination angle of the outer peripheral shingle 1b differs for each mounting position of the curved scaffold bracket 4. In the curved scaffold bracket 4 of the first example, the hook 5 attachment portion at the end of the horizontal member 8 on the outer frame member 14 side and the clamp 10 attachment portion at the lower end of the diagonal member 9 are rotatably connected by pins. It can be mounted horizontally at any mounting position of the outer frame member 14 on the outer surface of the outer peripheral roof plate 1b.
The curved scaffold bracket 4 of the first example has a structure in which the hook 5 and the clamp 10 are rotatably connected by pins, and the mounting angle can be easily adjusted. Further, the curved scaffolding bracket 4 of the first example is different from the conventional curved scaffolding bracket in that a plurality of fixing holes are not provided in the diagonal material or a new fixing hole is formed in the upper portion of the horizontal member 8. It is possible to attach a horizontal scaffold to a curved surface without projecting the diagonal members 9.

The curved scaffold bracket 4 of the first example has the following operational effects.
It is a structure that allows a horizontal scaffold to be attached to a curved surface without projecting the diagonal member 9 above the horizontal member 8, and is safe without being obstructed when attaching a fall / fall prevention net or the like. . Further, there is no need to provide a structure in which a plurality of bolt / nut fixing holes are provided in the diagonal member 9 unlike the conventional curved scaffold bracket.
The hook 5 has a detachable structure, and can be easily installed by providing the outer frame member 14 with the insertion port 3 formed by notching or opening.
Since the stopper 5 for preventing falling off is provided at the hook 5 attachment portion, the hook 5 does not come off from the outer frame member 14 while being hooked by being inserted into the insertion port 3.
Since the hook 5 mounting portion is rotatably connected by the pin 11, the mounting angle with respect to the curved surface can be easily adjusted.
The structure is simpler than a turnbuckle or a screw-in structure, 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 as a substitute for the vertical member of the conventional scaffold bracket, the cost of members can be reduced.

FIG. 7 is an explanatory view showing each component of the curved scaffold bracket 16 of the second example.
The curved 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 shown in FIG. 2 and is hooked on the outer frame member 14, and the outer frame member is provided on the back of the hook 17. 14, a horizontal member 20 attached so as to be disposed along the flange 14 a, and a diagonal member 21 which is obliquely bridged between a lower end of the vertical member 19 and an end of the horizontal member 20. And a scaffold bracket for a curved surface having a triangular shape formed by.
The hook 17 has a structure detachable from the vertical member 19 and the horizontal member 20, and a mounting piece 18 having a fixing hole 18 a is provided at the back of the hook 17.
The length L of the hook portion of the hook 17 is set to a length that allows the hook 17 to be inserted into the insertion port 3 of the outer frame member 14 from the front and to be hooked.
The vertical member 19 is formed of a molded steel material such as an angle member, and a support member 19c formed of flat steel, an angle member, or the like is provided below the vertical member 19. The vertical member 19 has fixing holes 19a and 19b at its upper end and lower end, through which pins are detachably inserted.
The horizontal member 20 has fixing holes 20a and 20b at both ends where pins are detachably inserted. Further, the horizontal member 20 includes a handrail support upright member 28 extending vertically upward at an end.
The diagonal member 21 is composed of two plates, an upper diagonal member 21a and a lower diagonal member 21c, and each plate has a plurality of fixing holes 21b and 21d.
Further, the positions and the number 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 fixing holes (not shown) for adjustment are separately provided. The structure may be good.

FIG. 8 is an explanatory diagram showing a detailed structure of a curved scaffold bracket 16 of a second example in which the components shown in FIG. 7 are connected and integrally formed.
The upper end of the vertical member 19 and the end of the horizontal member 20 on the side of the outer frame member 14 are rotatably connected to the mounting piece 18 at the back of the hook 17 by pins 22 so that the lower end of the vertical member 19 The lower end of the diagonal member 21, the end of the horizontal member 20, and the upper end 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 of the diagonal members 21a and 21c has fixing holes 21b and 21d at a plurality of locations. The two diagonal members 21a and 21c have a structure in which the overlapping margin is adjusted so that the curved scaffolding bracket 16 is mounted horizontally on the curved surface, and the pins 24 and 25 are inserted through at least two of the fixing holes 21b and 21d. It is structured to be fastened and fixed.
Further, the length of the upper oblique member 21a and the lower oblique member 21c, the number and intervals of the fixing holes, and the like can be variously adopted according to the mounting condition of the curved scaffolding 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 example is inserted into the insertion port 3 of the outer frame member 14 and is hooked.
(E) shows a hook 17 having a slit 27 at or near the center in the width direction, and an outer frame member 14 having an insertion port 3 into which the hook 17 is inserted and hooked.
(F) Insert the hook 17 from the front of the insertion port 3 and fit the web 14b of the outer frame member 14 into the slit 27 of the hook 17 so that the hook 17 does not fall off from the outer frame member 14 and latch. It shows the state where it was done.
By employing the hook 17 having the slit 27, it is possible to prevent the hook 17 from dropping from the outer frame member 14 without providing a separate member such as the stopper 7.

FIG. 10 is an explanatory view showing a state where the curved scaffold bracket 16 of the second example is attached to the outer frame member 14 at the upper part (D), the middle part (E), and the lower part (F) of the outer peripheral shingle 1b. .
As shown in (D) to (F), the inclination angle of the outer peripheral shingle 1b differs for each mounting position of the scaffold bracket 16 for curved surfaces. The curved scaffold bracket 16 of the second example 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, by changing the overlapping margin of the two diagonal members 21a and 21c, the entire length of the diagonal member 21 can be adjusted. It is possible to install
In the curved scaffold bracket 16 of the second example, the hook 17 mounting portion is rotatably connected by the pin 22 so that the mounting angle can be easily adjusted. In addition, unlike the curved scaffold bracket of the related art, the curved scaffold bracket 16 of the second example can attach a horizontal scaffold to a curved surface without projecting the diagonal member 21 above the horizontal member 20.

The curved scaffold bracket 16 of the second example has the following operational effects.
It is a structure that allows a horizontal scaffold to be attached to a curved surface without projecting the diagonal member 21 above the horizontal member 20, and it is safe without being obstructed when attaching a fall / fall prevention net or the like. .
The hook 17 has a detachable structure, and can be easily installed by providing the outer frame member 14 with the insertion port 3 formed by notching or opening. The hook 17 is provided with a slit 27, and when the hook 5 is inserted into the insertion slot 3 and hooked, the web 14b of the outer frame member 14 is fitted into the slit 27, and the outer frame member 14 is engaged. Never get out of the way.
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.
The structure is simpler than a turnbuckle or a screw-in structure, the construction cost is low, and the length of the diagonal member 21 can be easily adjusted.

  The curved 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 of the diagonal member 21 is connected with a pin. good.

FIG. 11 is a perspective explanatory 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 scaffold bracket for a curved surface is provided. is there.
(G) of FIG. 11 shows the detailed structure of the upper figure, in which the inverted L-shaped mounting member 29 shown in (g) is fixed by abutting the web 14b of the outer frame member 14 as shown in (h). As shown in (i), the hook of the curved scaffolding bracket 4 (16) is inserted into the gap-shaped insertion port 30 formed between the inverted L-shaped mounting member 29 and the flange 14a of the outer frame member 14 as shown in FIG. 5 (17) is inserted and hooked.

FIG. 12 is an explanatory cross-sectional view showing a procedure and an example of a method of attaching the inverted L-shaped attachment member 29 of FIG. 11 to the outer frame member 14.
The inverted L-shaped mounting member 29 is a member composed of a web 29a, a flange 29b, and a hook portion 29c, and 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 that the insertion port 30 into which the hook 5 (17) is inserted is formed, and the inverted L-shaped mounting member 29 is formed. 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 web 29a is fixed with at least two bolts and nuts 29e and 29f as shown in FIG. is there.
The inverted L-shaped mounting member 29 is formed of a simple member, and has a structure that 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 mounting member 29 becomes detachable and can be used repeatedly.
Further, a conventional curved scaffold bracket can be hooked and fixed to the inverted L-shaped mounting member 29.
The shape and fixing method of the mounting member 29 are not limited to the above, and various shapes and fixing methods can be adopted.

FIG. 13 is a perspective explanatory view showing a state in which the outer frame member 14 has been removed after the assembly and construction of the outer tub roof panel 1.
As shown in FIG. 13, after constructing the outer tub roof panel 1, the outer frame member 14 joined to the outer surface of the outer peripheral roof panel 1 b is dismantled and removed.
As described above, since the insertion port 3 or the inverted L-shaped mounting member 29 for mounting the curved scaffold bracket 4 (16) on the outer frame member 14 is provided, a bracket mounting member such as the Necopys 31 is separately provided. There is no need to weld and fix to the outer surface of the roof tub 1 or the like of the outer tub, so that the amount of welding and the labor and cost required for the construction of the bracket scaffold, the work of removing the necopyse 31 and the nondestructive inspection after the removal can be reduced. In addition, the appearance after the construction of the storage tank is good. Further, the bracket can be removed together with the outer frame member 14 after the roof shingle 1 is constructed, and the labor required for disassembling the bracket scaffold can be reduced.

It is also possible to adopt a bracket structure in which the structure of each part of the bracket 4 (16) of the first and second examples shown in FIGS. 1 to 13 is combined. For example, the hook 17 having the slit 27 and the clamp 10 are connected to the lower end of the diagonal member 9, or the hook 5 to which the stopper 7 for preventing falling off is connected and the two-layered diagonal member 21 are combined. It is also possible to employ a bracket or the like.
In addition, FIGS. 1 to 13 show an example in which the present invention is applied to the outer roof of a cylindrical low-temperature storage tank, but the bracket of the present application can be applied to bracket scaffolds of various steel structures. .
Further, the present invention is not limited to the outer frame material 14 of the channel material, but can be applied to an outer frame material formed of an I-type steel material, an H-type steel material, or the like.

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

DESCRIPTION OF SYMBOLS 1 Roof 1a Top roof 1b Peripheral roof 2 Side plate 2a Top angle 3 Insertion hole 4 Scaffolding bracket for curved surface of the first example 5 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 support standing member 16 Curved scaffold bracket 17 of second example 17 Hook 18 Mounting 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 diagonal 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 support member 29 upside down L-shaped mounting member 29a web 29b Flange 29c Hook 29d Weld 29e Bolt / Nut 29f Bolt / Nut 30 Insertion port 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 support standing member

L Hook length of hook 17 R Rotation

Claims (3)

A hook having a structure that abuts against the outer surface of a temporarily provided outer frame member in contact with the outer surface of a curved roof shingle of a steel structure to be hooked, a horizontal member attached to the back of the hook, and a horizontal member; A scaffolding bracket for a curved surface formed by a diagonal member obliquely bridged between an end portion of the horizontal 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 horizontal frame member. A side end is rotatably connected via a pin, and a stopper formed of a flat plate is provided at a pin connecting portion of the mounting piece and the horizontal member, and a web of an outer frame material is provided by the stopper and the hook. The slant member is rotatably connected to an end of the horizontal member via a pin, and the slant member is rotatably connected to an end of the horizontal member via a pin. A rotatable clamp is attached to the lower end of the material via a pin, and the clamp is 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 abuts against the curved roof shingle outer surface of the steel structure and is inserted into an insertion hole provided in the temporarily provided outer frame material to be hooked, and a back of the hook is formed along the flange of the outer frame material. A curved scaffold bracket having a triangular shape formed by a vertical member mounted so as to be disposed, a horizontal member, and a diagonal member obliquely bridged between a lower end of the vertical member and an end of the horizontal member. The hook has a slit, the web of the outer frame material is fitted into the slit to prevent falling off from the outer frame material, and the mounting piece provided on the back portion of the vertical member of the vertical member 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 has a support member at a lower portion which comes into contact with a flange of the outer frame member, and 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 pins. The diagonal member has a two-plate structure, and each of the diagonal members has a plurality of fixing holes, and is fastened and fixed via pins at at least two places of the fixing holes at an arbitrary overlap margin. A scaffold bracket for a curved surface having a structure and having means for attaching a horizontal scaffold to an outer surface of a curved roof shingle.
3. The curved scaffold bracket according to claim 1 or 2, wherein a gap formed between an inverted L-shaped mounting member having a structure of contacting and fixing the web of the outer frame material and a flange of the outer frame material. The scaffold bracket for curved surfaces according to claim 1 or 2, wherein the hook is inserted into a hook-shaped insertion hole and the hook is hooked.

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