JP3571866B2 - Three-dimensional bracket scaffold for glued-lumber truss and its bracket - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a three-dimensional bracket scaffold for a laminated truss truss and its bracket.
In large-scale membrane-covered structures using laminated trusses such as egg-shaped domes, large laminated trusses that make up the roof may be tilted three-dimensionally at various angles. In addition, the floor scaffold used for maintenance of the finishing material (inner membrane etc.) during the construction of the truss along the laminated truss truss, or for tightening the bolt of the truss joint, etc., always keeps the floor surface horizontal or almost It is important for safety to keep it level.
The present invention relates to a scaffold capable of safely performing operations such as retightening in these three-dimensionally laminated truss trusses.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a roof truss of a large-scale membrane structure, a passage scaffold using a telescopic bracket or a passage scaffold using a suspension chain is used.
In the former, a passage is assembled with a telescopic bracket and a single tube, and a scaffold plate is laid.In the latter, a chain is lowered from an upper suspension source, and the chain is suspended by a chain clamp using a single tube. It is made by laying steel fabric boards.
[0003]
[Problems to be solved by the invention]
However, since the passage scaffold by the telescopic bracket is used only in a horizontal or almost horizontal portion, it is necessary to use a complicated base single pipe in order to attach it to the laminated truss having various inclinations as described above. Assembling is required, and the assembling and disassembly take a great deal of trouble, which not only leads to an increase in cost, but also increases the work at high places and increases the danger of work.
In the case of a passage scaffold using a suspension chain, by changing the length of the suspension chain, it is possible to cope with a three-dimensional inclination to some extent, but the swing is large and anxiety is caused. Further, since various mounting states are obtained by searching for a hanging source at a high place, assembling and disassembling are troublesome, costly, and highly dangerous.
Therefore, the present invention allows a floor for a worker to work or move to be always or horizontally installed on a three-dimensionally inclined laminated truss so as not to damage the laminated truss. It is intended to simplify the configuration, reduce the weight, facilitate assembly and disassembly, improve workability and safety, and reduce costs.
[0004]
[Means for Solving the Problems]
In view of such an object, the invention of the three-dimensional bracket scaffold for laminated truss truss according to claim 1 includes a turnbuckle mechanism 16 between a pair of engagement plates 14 and 14 to be engaged with an upper edge portion of the laminated lamella forming the truss. A mechanically interposed mounting hardware 17 is provided, the base end of a support arm 20 is pivotally mounted on one engagement plate 14 of the mounting hardware, and the other end of the support arm 20 is connected to the other of the engagement plates 14. The bracket 11 is formed by equipping a bracket-shaped angle adjusting hardware 25 whose length can be changed between the bracket and the bracket, and the passage 12 is assembled to the support arm 20 of the bracket, and an appropriate number of tread plates 13 are provided in the passage. It is characterized by being equipped with an adjustable angle.
[0005]
In the invention of the three-dimensional bracket scaffold for laminated truss of claim 2, a turnbuckle mechanism 16 is mechanically interposed between a pair of engagement plates 14, 14 to be engaged with an upper edge portion of the laminated lamella forming the truss. A mounting hardware 17 is provided, the base end of the support arm 20 is pivotally mounted on one of the engagement plates 14 of the mounting hardware, and between the other engagement plate 14 and a middle portion of the support arm 20. A bracket 11 is formed by equipping a bracket-shaped angle adjusting hardware 25 having a variable length, and a passage 12 is assembled to a support arm 20 of the bracket. In the passage, a handrail and a scaffold plate 36 are supported by the support arm 20. It is characterized by having made it.
[0006]
According to the third aspect of the present invention, a turnbuckle mechanism is mechanically provided between a pair of engaging plates to be engaged with an upper edge portion of a laminated timber forming a truss. A mounting hardware 17 is provided, and the base end of the support arm 20 is pivotally mounted on one of the engagement plates 14 of the mounting hardware, and between the other engagement plate 14 and the middle of the support arm 20. It is characterized in that a wand-shaped angle adjusting hardware 25 whose length can be changed in between is equipped.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
FIGS. 1 to 4 show a three-dimensional bracket scaffold for a laminated truss according to the invention of claims 1 to 3, and FIGS. 5 and 6 show a large-scale double-layered structure using the scaffold. 1 shows an egg-shaped dome.
[0008]
As shown in FIGS. 5 and 6, the egg-shaped dome is constructed by constructing a large-sized roof truss (hereinafter referred to as “laminate truss”) 1 formed into an egg shape by using glulam, and a double truss is provided on the glue-lumber truss. In this case, the laminated truss 1 includes a long side truss upper chord 4, a long side truss lower chord 5, a short side arch 6, and a steel bundle. 7, a lattice material 8, a brace 9 and the like are formed in many combinations.
Particularly, the long truss upper chord material 4, the long side truss lower chord material 5, and the short side directional arch material 6 all have two rectangular members a and b having a rectangular cross section parallel to each other, and spacers c are provided at various points in the middle. Cedar glulam lumber joined with intervening.
In this laminated truss 1 for an egg-shaped dome, the long side truss upper chord 4, the long side truss lower chord 5, and the short side arch 6 are almost three-dimensionally inclined at various angles in various places. However, the three-dimensional bracket scaffold for the laminated truss truss according to the first and second aspects of the present invention is detachably and directly mounted on these members, and the floor of the foot is always horizontally or almost horizontally. I try to keep it.
[0009]
As shown in FIG. 1, the three-dimensional bracket scaffold 10 for the laminated truss is provided on the upper truss upper chord 4, the lower truss lower chord 5 or the short side arch 6, and along these members. The required number of angle-adjustable brackets 11 for the attachment, a passage 12 made of a single pipe or the like to be attached to these brackets, a required number of tread plates 13 to be laid in the passage, and various types of Consists of clamps.
[0010]
As shown in FIGS. 2 to 4, the bracket 11 has an inverted L-shape and an outward shape which is brought into contact with the upper inner edges of two square members a and b constituting the lower side truss lower chord member 5 and the like. A pair of engaging plates 14 and 14, a white rubber 15 is adhered to the engaging surfaces of both engaging plates, and a mounting metal 17 is provided by mechanically interposing and connecting a turnbuckle mechanism 16 between the both engaging plates. A forked upright piece 18 and 19 with holes are respectively erected from the upper surfaces of both engagement plates in a common upright plane, and a support arm 20 of a pipe of an appropriate length for receiving the passage 12 is provided. A tongue piece 21 with a hole is protruded from the base end thereof, and the tongue piece with a hole is pivotally connected to a forked upstanding piece 18 of one engaging plate 14 by a split horizontal pin 22 which is secured by a split pin 23. Further, a plurality of lateral holes 24 are provided in the middle of the support arm, The upper end of the fork-shaped angle adjusting metal fitting 25 is detachably connected to one of the holes with bolts and nuts 26, and the lower end is connected to the forked bifurcated standing piece 19 of the other engaging plate 14 with a bolt. It is detachably connected by a nut 27.
However, it is assumed that an appropriate number of the staff-shaped angle adjusting hardware 25 having different lengths are prepared, and a necessary length is selected and used.
In addition, the staff-shaped angle adjusting hardware 25 may be provided with expansion and contraction adjusting means.
[0011]
The single pipe passage 12 has two upper and lower cloth pipes 28 and 29 in the row direction on the both sides of the path in a left-right pair, and arm pipes 30 are laid on right and left at required places between the upper and lower cloth pipes. Handrail tubes 31 are erected from required places of upper and lower cloth tubes 28 and 29 on both sides of the passage, and handrail tubes 32 are erected on these handrail tubes on both sides, respectively. Use the corresponding triple or double universal clamps 33,34. Then, the above-mentioned brackets 11 are connected to required portions of the lower cloth pipe 29 on both sides of the passage, respectively, by two free clamps 34.
[0012]
The required number of treads 13 to be laid in the passage is formed to have a width that can be accommodated between the cloth pipes 28 and 29 on both sides of the passage, and is provided with adjustment clamps 35 that can adjust the angle on both sides, respectively. A clamp is attached to the upper cloth pipe 28 on both sides of the passage, and the inclination is adjusted appropriately.
[0013]
The three-dimensional bracket scaffold for laminated truss truss 10 is laid for each block with an appropriate length corresponding to the mounting location, and is lifted on the long side truss lower chord material 5 or the like to be mounted by a crane, The pair of engaging plates 14 of each bracket 11 are brought into contact with the upper inner edges of two square members a and b such as the lower chord members 5 of the long side direction truss with white rubber 15 respectively, and the turnbuckle mechanism 16 is turned on. By performing the expansion operation, both engagement plates are fixed in a state of being stretched. Then, adjacent mutual connection is performed.
When detaching, the connection between the adjacent plates is released, the turnbuckle mechanism 16 of each bracket 11 is reduced in size, the tension of both engagement plates 14, 14 is released, and lifted by a crane to remove.
The removed three-dimensional bracket scaffold for laminated truss truss 10 is diverted to another place as it is, or by appropriately changing the angle adjusting hardware 25 of each cane-shaped angle adjusting bracket 25, adjusting the angle of each tread plate 13 by the adjusting clamp 34, and the like. I do. When it is no longer necessary, the whole may be dismantled and each member may be reused.
Note that the three-dimensional bracket scaffold 10 for laminated truss truss can also be assembled or disassembled in whole or in part at a mounting location.
[0014]
By the way, when the passage 12 formed by a single pipe becomes horizontal or almost horizontal only by selecting the hook-shaped angle adjusting hardware 25 in each bracket 11, the upper and lower cloth pipes on both sides and the tread plate for adjusting the angle are not necessarily required in the passage 12. Instead, as shown by a two-dot chain line in FIGS. 2 and 3, a scaffold plate 36 is provided between the support arms 20 of each bracket 11 and two free clamps 34 are provided from the support arm 20 of the appropriate bracket 11. The handrail tube 31 may be directly erected on one side or both sides via the intermediary.
In the above embodiment, the mounting hardware 17 of the bracket 11 causes the pair of engaging plates 14, 14 to protrude outward. However, the mounting plate 17 may be narrowed inward.
[0015]
【The invention's effect】
According to the first, second, and third aspects of the present invention, the following effects are achieved because of the above-described configuration.
(1) Even with a truss (beam) that is complicatedly inclined in three dimensions, the work floor can be always kept horizontal, so that work at heights can be performed safely.
(2) Not only can the scaffold be pre-grounded, but also the installation, removal and disassembly of the scaffold at a high place can be easily performed by a crane, so that dangerous work at a high place can be greatly reduced.
(3) Since attachment and detachment can be performed easily and easily by operating the attachment hardware, the number of times of scaffold conversion can be increased, and temporary costs can be reduced.
(4) It is possible to cope with an H-beam or the like simply by changing a portion connected to a truss (beam) such as an engagement plate, so that a wide horizontal deployment can be achieved.
(5) The glued laminated lumber is liable to be damaged or stained, requiring a large repair cost and labor. However, by engaging the engaging plate via the white rubber, it is possible to make the glued lumber difficult to be damaged or stained.
(6) The scaffold can be reduced in weight and simplified, and assembly, disassembly, handling, and the like can be performed easily and quickly.
(7) Overall, construction costs can be significantly reduced.
[Brief description of the drawings]
FIG. 1 is a cutaway perspective view showing an embodiment according to the first and third aspects of the present invention.
FIG. 2 is a front view showing an embodiment according to the second and third aspects of the present invention.
FIG. 3 is a front view showing a modification of the passage in FIG. 2;
FIG. 4 is an exploded perspective view of the bracket in FIGS. 1 to 3;
FIG. 5 is a cutaway side view of an egg-shaped dome to which the inventions of claims 1 to 3 are applied.
FIG. 6 is an enlarged cutaway perspective view of a main part of the egg-shaped dome of FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... laminated wood truss 2, 3 ... double membrane 4 ... long side truss upper chord material 5 ... long side truss lower chord material 6 ... short side direction arch material 7 ... bundle material 8 ... lattice material 9 ... braces a, b ... Square lumber 10 ... Three-dimensional bracket for glued timber truss Scaffold 11 ... Bracket 12 ... Pathway 13 ... Tread plate 14 ... Engaging plate 15 ... White rubber 16 ... Turnbuckle mechanism 17 ... Mounting hardware 18 ... Two-piece upright piece 19 ... Two with hole Standing piece 20 Support arm 21 Tongue piece with hole 22 Horizontal shaft 23 with head 23 Split pin 24 Horizontal hole 25 Brace-shaped angle adjusting hardware 26 Bolt and nut 27 Bolt and nut 28 Cloth tube 29 ... cloth tube 30 ... arm tube 31 ... handrail tube 32 ... handrail tube 33 ... three free clamps 34 ... two free clamps 35 ... adjustment clamp 36 ... scaffold plate

Claims (3)

A mounting member 17 having a turnbuckle mechanism 16 mechanically interposed therebetween is provided between a pair of engaging plates 14 and 14 to be engaged with the upper edge portion of the laminated material forming the truss, and one engaging plate 14 of the mounting member is provided. The base arm of the support arm 20 is pivotally mounted on the upper side, and a hook-shaped angle adjusting hardware 25 capable of changing the length between the other engagement plate 14 and the middle part of the support arm 20 is provided. A three-dimensional scaffold for a laminated truss truss, wherein a bracket 11 is formed, a passage 12 is assembled to a support arm 20 of the bracket, and a suitable number of treads 13 are provided in the passage so as to be adjustable in angle. A mounting member 17 having a turnbuckle mechanism 16 mechanically interposed therebetween is provided between a pair of engaging plates 14 and 14 to be engaged with the upper edge portion of the laminated material forming the truss, and one engaging plate 14 of the mounting member is provided. The base arm of the support arm 20 is pivotally mounted on the upper side, and a hook-shaped angle adjusting hardware 25 capable of changing the length between the other engagement plate 14 and the middle part of the support arm 20 is provided. A three-dimensional bracket scaffold for a laminated truss truss, wherein a bracket 11 is formed, a passage 12 is assembled to a support arm 20 of the bracket, and a handrail and a scaffold plate 36 are supported on the support arm 20 in the passage. A mounting member 17 having a turnbuckle mechanism 16 mechanically interposed therebetween is provided between a pair of engaging plates 14 and 14 to be engaged with the upper edge portion of the laminated material forming the truss, and one engaging plate 14 of the mounting member is provided. The base end of the support arm 20 is pivotally mounted thereon, and a hook-shaped angle-adjustment hardware 25 whose length can be changed between the other engagement plate 14 and the middle part of the support arm 20 is provided. A three-dimensional bracket for a laminated truss truss.

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