JP3606346B2 - Swivel hanger scaffold - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a free-hanging hanger scaffold that temporarily places a scaffold horizontally on a frame whose direction is inclined in three dimensions.
[0002]
[Prior art]
As a conventional temporary suspension scaffold, a shelf scaffold by a suspension chain and a suspension hanger scaffold are known.
The former is a suspension chain suspended from a beam in a ring shape, and the suspension chain supports a shelf scaffolding consisting of a single tube, scaffolding plate, etc., and the latter is a hanger scaffold with a horizontal or almost horizontal beam as a fulcrum. It is used by hanging.
[0003]
[Problems to be solved by the invention]
By the way, in the construction of an egg-shaped dome or the like, the truss constituting the roof may be tilted in three dimensions at various angles. Even in such a case, the connecting scaffold for the truss that is being constructed is horizontal or almost horizontal. Maintaining is important for work and safety.
In this regard, in the case of the shelf scaffolding using the suspension chain, it is possible to cope with the three-dimensional inclination to some extent by changing the length of the suspension chain. However, when the fulcrum interval is large, the scaffold strength decreases. Moreover, since the shelf scaffolding is attached at a high place, it takes a lot of man-hours for assembling and dismantling, and the danger increases due to the increase in work at a high place, which causes a problem in safety.
In the case of a hanging hanger scaffold, since only a horizontal or almost horizontal portion is currently used, it cannot be used for a truss or the like that tilts in three dimensions.
The present invention is intended to solve these problems, and enables a hanger scaffold to be stably suspended in a horizontal state at various positions of a frame whose direction is inclined in three dimensions, and its assembly. In addition, it is intended to make dismantling safe and easy.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a frame in which a pair of suspension frames 1a and 1b, which are formed so as to be capable of being folded inward by hinge-joining the upper frame member 11 and the lower frame member 12, at the upper end portions. A suspension hanger 1 is provided that can be pivoted to both ends of 1c so as to straddle a truss, a beam, and other important points and hang down, and each of the suspension frames 1a and 1b of the suspension hanger is provided. A pair of hanger scaffolds 2 are mounted on the lower frame member 12 so as to be adjustable in inclination.
[0005]
According to the second aspect of the present invention, a pair of suspension frames 1a and 1b formed by hinge-joining the upper frame member 11 and the lower frame member 12 so as to be able to be folded in the middle are pivotally attached to both ends of the mounting frame 1c at their upper ends. Thus, a suspension hanger 1 that can be opened and strung over a truss, beam, or other important point is provided, and a pair is attached to each lower frame member 12 of the suspension frames 1a and 1b of the suspension hanger. And a lock device 15 for locking the suspension frames 1a, 1b in any open leg state between the pair of suspension frames 1a, 1b and the mounting frame 1c. An appropriate number of slits 123, 241 are provided to cross each of the lower frame member 12 and the hanger scaffold 2 so that the attachment of each of the hanger scaffolds 2 is adjustable. Characterized in that the fastening inclination adjustably with bolts and nuts 16 to loosen tightened at the intersection is.
[0006]
The invention according to claim 3 is the universal suspension hanger scaffold according to claim 1 or 2, wherein a plurality of suspension plates 113 are respectively provided on the outer surface of the upper frame member 11 of the pair of suspension frames 1a and 1b. Become.
[0007]
The invention according to claim 4 is the free-hanging hanger scaffolding according to claim 2, wherein the slits 123 of the respective lower frame members 12 are formed in the vertical members 121 constituting the respective lower frame members 12, The slits 241 are formed on the skirting board 24 provided on each hanger scaffold 2.
[0008]
The invention according to claim 5 is the universal suspension hanger scaffolding according to claim 1, claim 2, claim 3 or claim 4, wherein a suspension chain is provided between each suspension frame 1a, 1b and each hanger scaffold 2. 4 and the cane 29 are detachably mounted.
[0009]
The invention according to claim 6 is the free-hanging hanger scaffold according to claim 1, claim 2, claim 3, claim 4 or claim 5, and can be folded over the side surface of each hanger scaffold 2. A scaffold 3 is attached.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The drawing shows a free-hanging hanger scaffold used to construct a roof truss such as an egg-shaped dome that tilts in three dimensions at various angles.
In the figure, reference numeral 1 denotes a hanging hanger capable of being opened and folded in a straddle manner strung over an upper chord material A of a truss, and 2 is a pair of hanger scaffolds attached to the lower part of the hanging hanger so as to be adjustable in inclination. Reference numeral 3 denotes an overhanging scaffold that is foldably attached to the side surface of each hanger scaffold.
[0011]
As shown in FIGS. 1 to 7, the hanging hanger 1 includes an upper frame member 11 and a lower frame member 12 formed in a square shape by vertical members 111 and 121 and horizontal members 112 and 122 by a two-point hinge 13. A pair of suspension frames 1a and 1b formed so as to be capable of being folded in the middle can be pivotally attached 14 at both upper ends to the both ends of the mounting frame 1c so as to be able to spread over the upper chord material A of the truss. In addition, a locking device 15 that can be engaged and disengaged for locking the rotation of the suspension frames 1a and 1b at an arbitrary angle is provided in the vicinity of each pivoting portion 14, and a pair of locking devices 15 are provided on the outer surfaces of both lower frame members 12. The hanger scaffold 2 is mounted so that the tilt can be adjusted.
Both upper frame members 11 are provided with a plurality of suspension plates 113 having through holes respectively formed on the outer surfaces of the left and right vertical members 111 so that they can be lifted by a crane or the like. A plurality of fixing hooks 114 project from appropriate positions on both side surfaces of 111 so that they can be temporarily engaged with bolts projecting from the connecting end portion of the upper chord material A of the truss. In 1c, a rotation hook 19 is mounted at an appropriate position so that it can be engaged with a bolt protruding from the protruding end portion of the upper chord material A of the truss.
Bolts and nuts 16 are formed in both lower frame members 12 by forming slits 123 which are long in the material length direction and opened in the inner and outer surfaces in the left and right vertical members 121 and are inserted through these slits so as to be repositionable. Thus, the inner surface side of each hanger scaffold 2 is fastened so as to be adjustable in inclination.
Further, the mounting frame 1c, each upper frame member 11, and each lower frame member 12 are reinforced with braces 17, 115, 124, respectively. The mounting frame 1c and each upper frame member 11 include The rubber plates 18 and 116 are attached to the inner surface so as to prevent damage to the upper chord material A of the straddled straddle.
The left and right vertical members 111 and 121 of each upper frame member 11 and each lower frame member 12 and the horizontal member 112 above each upper frame member 11 are square pipes and horizontal members below each lower frame member 12. A round pipe is used for 122, and angles are used for the lower horizontal member 112 of each upper frame member 11 and the upper horizontal member 122 of each lower frame member 12.
[0012]
As shown in FIG. 8, both locking devices 15 are provided with pivoting portions on the upper surfaces of both end portions of the mounting frame 1c in the vicinity of the pivoting portions 14 of the suspension frames 1a and 1b and the mounting frame 1c. A fan-shaped lock plate 151 centered at 14 is erected along the vertical member 111 of each upper member 11, and each of the fan-shaped lock plates 151 has a circular arc-shaped elongated hole 152 for locking centered on the pivot portion 14, respectively. The locking bolts and nuts 153 provided in the vertical member 111 are inserted into the locking arc-shaped elongated holes.
A plurality of locking recesses 154 are arranged in a gear tooth shape at the upper hole edge in each arcuate elongated hole 152 for locking, and each of the locking bolts and nuts 153 is engaged with any one of the locking recesses 154. Each of the locking bolts and nuts 153 can be moved up and down in each of the short and small long holes 155 drilled in the material length direction at an appropriate position of the one vertical member 111 so as to correspond to each of the circular arc-shaped long holes 152 for locking. In this way, engagement / disengagement with respect to the respective locking recesses 154 is obtained by this vertical movement.
Thus, if both locking devices 15 are lowered in the short and long holes 155 and the locking bolts and nuts 153 are lowered and released from the locking recesses 154, the locking arcuate long holes Each of the locking bolts and nuts 153 can be freely moved within 152, and the suspension legs 1a and 1b can be freely opened or rotated. Further, the respective locking bolts and nuts 153 are raised at arbitrary opening angles of the suspension frames 1a and 1b to be engaged with the corresponding locking recesses 154, and if tightened, the respective locking bolts. The movement of the nut 153 becomes impossible, and the suspension frames 1a and 1b are restrained at the open leg angle.
[0013]
As shown in FIGS. 9 and 10, each two-point hinge 13 has a pair of hinge plates from both sides between the vertical members 111 and 121 of the upper frame member 11 and the lower frame member 12 of the suspension frames 1a and 1b. 131 are brought into contact with each other, and hinge pins 132 and 133 are inserted into both ends of both hinge plates and the ends of upper and lower vertical members 111 and 121 so that the suspension frames 1a and 1b can be folded inward and outward. .
[0014]
As shown in FIGS. 1 to 7, 11, and 12, the pair of hanger scaffolds 2 has an upper surface of a pair of scaffold frames 21 whose depth is substantially equal to the lateral width of each of the suspension frames 1 a and 1 b and whose lateral width is about twice. In addition, the expanded metal 22 is stretched, the sheath tubes 23 are vertically provided at the four corners of the scaffold frames 21, respectively, the baseboard plates 24 are stretched on the inner and left and right sheath tubes 23 of the scaffold frames 21, and A handrail in which a baseboard mesh sheet 25 is stretched on one side surface of each scaffold frame 21 or a sheath tube 23 on the front and back of the one side surface, and a locking pin 261 protrudes from each upper end and middle portion of each sheath tube 23. The column 26 is detachably fitted and erected, and the handrail tube 27 and the girder tube 28 are detachably mounted between the adjacent handrail columns 26 by the locking pins 261, and are attached to the other side surfaces of the respective scaffold frames 21. Is Respectively has attached the overhang scaffold 2, their width side of each suspension frame 1a of the inner surface of each hanger scaffold 2 in wood plates 24 are mounted on the lower frame member 12 of 1b.
As shown in FIG. 11, each base plate 24 is provided with two upper and lower slits 241 in the left half and right half, respectively, and as shown in FIGS. 1, 2, and 13, The bolts and nuts 16 that intersect with the slits 123 in the lower frame members 12 of the suspension frames 1a and 1b are inserted into the slits 123 and can be repositioned into the slits 241 of the baseboard plates 24. The hanger scaffold 2 can be tilted by moving the bolts and nuts 16 in the slits by being inserted and positioned at the respective intersections, and the bolts and nuts 16 can be adjusted after the required tilt adjustment. Each hanger scaffold 2 is fastened to the lower frame member 12 of each of the suspension frames 1a and 1b so that the inclination can be adjusted.
As shown in FIGS. 11 and 12, a plurality of brace support hardwares 211 are arranged on the outer surface of each scaffold frame 21, and these brace support hardwares 211 are arranged in FIGS. 1 to 4, FIG. As shown in FIG. 15 and FIG. 16, the upper end of the cane 29 is connected to any one of them so that the direction of the cane can be freely changed, and the lower end of each of the cane 29 is connected to the lower part of the lower frame member 12 of the suspension frames 1a and 1b The horizontal member 122 is connected to the horizontal member 122 so as to be detachable and changeable in position.
As shown in FIGS. 15 and 16, a U-shaped metal fitting 292 is pivotally attached 293 to the upper end of each cane 29 so as to be pivotable vertically, and each U-shaped hardware is bolted to any arbitrary cane supporting metal 211. -It is fastened by a nut 294 so that it can rotate horizontally.
Further, as shown in FIGS. 1 to 4, the suspension chain 4 is detachable between the outer sheath tube 23 of each scaffold frame 21 and the suspension plate 113 of each of the suspension frames 1a and 1b. Overhangs and reinforces.
[0015]
As shown in FIGS. 11, 12, and 14, the overhanging scaffold 3 attached to the side surface of each hanger scaffold 2 has a small overhang frame 31 on the other side of each scaffold frame 21 via a hinge 32. In the state where each overhang frame 31 is tilted horizontally, the expanded frame 33 is stretched on the upper surface of each overhang frame 31, and two corners on the front and rear sides of each side end portion are provided. Sheath tubes 34 are provided perpendicularly to each other, and handrail columns 35 having locking pins 351 projecting from the upper end and the middle portion thereof are fitted and erected in a freely detachable manner. A handrail chain 352 and a girder chain 353 are detachably installed between adjacent handrail pillars 26 and 35.
The bifurcated scaffold 3 is used to increase the area of the scaffold. When it is not necessary to widen the scaffold, the respective handrail tube 35, handrail chain 352, and girder chain 353 are removed, and each overhang frame 31 is attached. Wake up and use each expanded metal 33 as a baseboard.
[0016]
With the above configuration, in use, first, the ground structure is adjusted according to the state of inclination of the truss upper chord material A, and the inclination of both hanger scaffolds 2 is adjusted. At this time, if the overhanging scaffold 3 is necessary, the overhanging frame 31 is brought down and the overhanging scaffold 3 is also grounded. However, both locking devices 15 are left in a detached state.
Next, it hangs on the suspension plate 113 provided on each suspension frame 1a, 1b of the suspension hanger 1 and lifts it with a crane or the like. In this lifted state, each suspension plate 113 is on the outer surface of each suspension frame 1a, 1b and outside the pivot frame 14 of each suspension frame 1a, 1b and placement frame 1c. 1b Therefore, the hanging hanger 1 is automatically in an open leg state.
The hanging hanger 1 that is lifted in an open leg state is straddled over a key point of the upper chord material A of the truss. In this state, the fixing hooks 114 and the rotating hooks 19 are temporarily engaged with the bolts protruding from the upper chord material A of the truss, and the locking devices 15 are locked to fix the suspension frames 1a and 1b. Then, the temporary construction is finished.
For example, as shown in FIGS. 1 and 3, the suspension hanger scaffold temporarily installed in this way is not inclined with respect to the suspension hanger 1 when the upper chord material A of the truss is horizontal. As shown in FIG. 2, when the truss upper chord material A is tilted in the axial direction, both hanger scaffolds 2 are tilted with respect to the hanging hanger 1, and as shown in FIG. If A has a twist in the torsional direction, one of the suspension frames rotates to the open leg state, and the other suspension frame is folded in the middle, resulting in both hanger scaffolds in either case. 2 horizontal states can be maintained.
When removing, the reverse procedure may be performed.
[0017]
In the above embodiment, the construction of a roof truss such as an egg-shaped dome is targeted. However, a steel beam or the like in a general construction may be used, and the position of the fixing hook 114 may be adjusted accordingly.
[0018]
【The invention's effect】
According to the first, second, third, fourth, fifth, and sixth aspects of the invention, the following effects can be obtained because of the above-described configuration.
(1) The hanger scaffold 2 can always be held horizontally even with complicated trusses and beams inclined in three dimensions, so that work at a high place can be performed safely.
(2) Since temporary scaffolding and dismantling and removal at high altitudes can be done very easily by most assembly and tilt adjustment on the ground or by dismantling and lifting with cranes, etc. Can be reduced.
(3) Since it can be easily attached to and detached from a truss, beam, etc., the number of times the scaffold is diverted can be greatly increased, and the temporary cost can be reduced.
(4) By changing only the part connected to the truss, beam, etc., it can be applied to H-section steel and steel pipes, so a wide range of horizontal development can be achieved.
[0018]
Furthermore, according to the second aspect of the present invention, the structure can be specifically simplified, and can be manufactured easily and inexpensively.
[0019]
According to the invention of claim 3, since the plurality of suspension plates 113 project from the outer surface of the upper frame member 11 of the pair of suspension frames 1a, 1b, they are hung on these suspension plates and lifted by a crane or the like. Thus, the pair of suspension frames 1a and 1b can be automatically opened, and therefore, attachment to and removal from a truss, beam or the like can be facilitated.
[0020]
According to the invention of claim 4, the base plate in which the slit 123 of each lower frame member 12 is formed in the vertical member 121 constituting each lower frame member 12 and the slit 241 of each hanger scaffold 2 is provided in each hanger scaffold 2. Since it is formed on the plate 24, the inclination of each hanger scaffold 2 can be adjusted easily, smoothly and accurately, and the structure can be simplified without causing any trouble.
[0021]
According to the invention of claim 5, since the suspension chain 4 and the cane 29 are detachably mounted between the suspension frames 1a, 1b and the hanger scaffolds 2, the respective hanger scaffolds 2 can be sufficiently reinforced, Stability and safety can be secured.
[0022]
According to the invention of claim 6, since the foldable overhanging scaffolds 3 are attached to the side surfaces of the respective hanger scaffolds 2, the scaffolds can be expanded by using these overhanging scaffolds 3 if necessary. And convenient.
[Brief description of the drawings]
FIG. 1 is a front view of a non-inclined state showing an embodiment of a freely suspended hanger scaffold according to the inventions of claims 1 to 5;
FIG. 2 is a front view of an inclined state in the same embodiment.
FIG. 3 is a partially cutaway side view of the non-inclined state in the same embodiment.
FIG. 4 is a partially cutaway side view in an inclined state according to the embodiment.
FIG. 5 is an enlarged front view showing a hanging hanger according to the same embodiment;
FIG. 6 is a partially cut-away enlarged side view showing the suspension hanger.
FIG. 7 is an enlarged plan view showing the suspension hanger.
FIG. 8 is an enlarged side view of a locking device in the hanging hanger.
FIG. 9 is an enlarged front view of a two-point hinge in the hanging hanger.
FIG. 10 is an enlarged side view of the two-point hinge.
FIG. 11 is an enlarged front view of a hanger scaffold in the same embodiment.
FIG. 12 is a partially broken enlarged plan view of the hanger scaffold.
FIG. 13 is an enlarged cutaway front view showing a coupling portion between a hanging hanger and a hanger scaffold in the same embodiment.
14 is a cut-away enlarged plan view showing a part of FIG. 12 further enlarged; FIG.
FIG. 15 is an enlarged cutaway side view related to the walking stick in the embodiment.
FIG. 16 is an enlarged front view of the same wand.
[Explanation of symbols]
A ... Upper truss material 1 of truss 1 ... Hanging hanger 2 ... Hanger scaffold 3 ... Overhang scaffold 4 ... Hanging chain 1a, 1b ... Hanging frame 1c ... Mounting frame 11 ... Upper frame material 12 ... Lower frame material 13 ... Two-point hinge 14 ... Pivoting part 15 ... Locking device 16 ... Bolt and nut 17 ... Brace 18 ... Rubber plate 19 ... Rotating hook 21 ... Scaf frame 22 ... Expanded metal 23 ... Sheath tube 24 ... Baseboard plate 25 ... Baseboard mesh sheet 26 ... Handrail column 27 ... handrail tube 28 ... girder tube 29 ... cane 31 ... hanging frame 32 ... hinge 33 ... expanded metal 34 ... sheath tube 35 ... handrail column 111,121 ... vertical member 112,122 ... horizontal member 113 ... hanging Plate 114 ... Fixed hooks 115 and 124 ... Brace 116 ... Rubber plate 123 ... Slit 131 ... Hinge plate 132 and 133 ... Hin Pin 151 ... Fan-shaped lock plate 152 ... Locking arc-shaped long hole 153 ... Locking bolt / nut 154 ... Locking recess 155 ... Short and small hole 211 ... Brace support metal 261 ... Locking pin 241 ... Slit 291 ... Clamp 292 ... U-shaped hardware 293 ... pivot 351 ... locking pin 352 ... handrail chain 353 ... girder chain

Claims (6)

A pair of suspension frames 1a and 1b, which are formed so as to be capable of being folded in the middle by hinge-joining the upper frame member 11 and the lower frame member 12, are pivotally attached to both ends of the mounting frame 1c at the upper end portions, respectively. Further, a suspension hanger 1 that can be opened and strung over other important points is provided, and a pair of hanger scaffolds 2 are adjusted to be inclined to the lower frame members 12 of the suspension frames 1a and 1b of the suspension hanger. A free-hanging hanger scaffold characterized by being freely mounted. A pair of suspension frames 1a and 1b, which are formed so as to be capable of being folded in the middle by hinge-joining the upper frame member 11 and the lower frame member 12, are pivotally attached to both ends of the mounting frame 1c at the upper end portions, respectively. Further, a suspension hanger 1 that can be opened and strung over other important points is provided, and a pair of hanger scaffolds 2 are adjusted to be inclined to the lower frame members 12 of the suspension frames 1a and 1b of the suspension hanger. A lock device 15 is provided for freely mounting and locking the suspension frames 1a, 1b in an arbitrary open state between the pair of suspension frames 1a, 1b and the mounting frame 1c. An appropriate number of slits 123, 241 are provided in the lower frame member 12 and the hanger scaffold 2 so as to cross each other. A free-hanging hanger scaffold characterized by being tightened with bolts and nuts 16 to be tightened and loosened so that the tilt can be adjusted. The universal suspension hanger scaffold according to claim 1 or 2, wherein a plurality of suspension plates (113) are respectively provided on the outer surface of the upper frame member (11) of the pair of suspension frames (1a, 1b). The slit 123 of each said lower frame material 12 is formed in the vertical member 121 which comprises each lower frame material 12, The slit 241 of each said hanger scaffold 2 is formed in the baseboard plate 24 provided in each hanger scaffold 2 2. The free-hanging hanger scaffold according to 2. 4. The universal suspension hanger scaffold according to claim 1, wherein a suspension chain 4 and a cane 29 are detachably mounted between the suspension frames 1a, 1b and the respective hanger scaffolds 2. The free-hanging hanger scaffold according to claim 1, 2, 3, or 4, wherein a foldable overhang scaffold 3 is attached to a side surface of each hanger scaffold 2.

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