JP3594298B2 - How to install stairs for temporary scaffolding - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method of continuously installing stairs for temporary scaffolding used for elevating a construction site, and in particular, it is possible to change the inclination of stairs, and to install two or more stairs continuously to install long stairs for temporary scaffolding. The present invention relates to a method for continuously installing stairs for temporary scaffolding, which can change the height of a handrail frame according to the inclination of the stairs, if necessary.
[0002]
[Prior art]
Temporary scaffold stairs are generally ones in which a plurality of treads are fixed to a pair of parallel inclined materials by welding at a predetermined angle, and this is crossed between temporary scaffolds assembled around the building, and the hoistway Is formed.
[0003]
However, in the stairs in which the treads are fixed at a predetermined angle, the stairs do not become horizontal if the gradient of the stairs changes. Therefore, as shown in JP-A-6-323003, a plurality of treads are formed by a pair of parallel slopes. There has been proposed an apparatus which is rotatably mounted on a shaft between columns and connects each tread plate to a pair of link members by a connecting member so that the angle of the tread plate can be freely changed in conjunction with the tread plate.
[0004]
[Problems to be solved by the invention]
However, in this temporary staircase, the lower end of the inclined material and the link material are connected by a base plate, and the angle of the tread plate is set to the angle of the base plate by bringing the base plate into close contact with the ground or the like. Although it is convenient for installation on the installation surface, when the ground or floor is inclined, the treads are also inclined and lack stability.
[0005]
In addition, in this temporary staircase, since no locking fittings are arranged at both ends, it is not possible to install two or more stairs continuously to install a long temporary scaffold staircase, which has recently been required. It could not be used as a slope passage or a scaffold at the work site when cutting up a mountain.
[0006]
[Means for solving the agenda]
The present invention has been made in view of the above-mentioned points, and in order to solve the above-described problems, in order to install two or more units on a differently undulated ground of a construction site in a connected manner, a pair of parallel inclined supports is provided. At both ends of the inclined brackets, semi-circular cutouts on the bottom side protrude from both ends of the inclined column toward the bottom side toward the bottom side, and are fixed. The front ends of the plurality of tread plates are rotatably mounted on the shaft between a pair of parallel inclined supports, and the rear ends of the tread plates are rotatably mounted on a pair of link members disposed parallel to the inclined supports. Using the stairs for temporary scaffolding, one for each of the left and right inclined posts, and an angle fixing device for fixing the tread plate at an arbitrary angle position with respect to the inclined posts while making it foldable by wearing As a tool, a long hole is drilled along the longitudinal direction on the side of the inclined support To form a recess fitted into the large diameter portion of the bolt fixing plate bored a round hole at predetermined intervals in the long hole of the long hole having the same shape are superposed the long hole attached to fastening bolt An angle fixing member is disposed between the elongated hole and the link member, one end of the angle fixing member is axially attached to a predetermined position of the link member, and the other end of the fastening bolt is inserted into the elongated hole. It is screwed to the nut fixed to the fixing material, and the tread plate is adjusted to an arbitrary angle by tightening and loosening the fastening bolt, and the horizontal members of the pipe at predetermined intervals on the uneven ground of the construction site Install the metal fittings in a semicircular notch on the horizontal member of the pipe on the upper side and on the bottom side from the upper end of the inclined pillar on the upper side of the temporary scaffold stairs with the notch facing the bottom side Lock the protruding locking metal fittings, and attach the temporary scaffold stairs to the horizontal member of the lower pipe. A locking metal that has a semicircular notch on the bottom side from the lower end of the lower inclined pillar is locked with a locking metal that projects the notch toward the bottom side, so that it can be fixed on the ground with different undulations. On the other hand, one of the treads of the temporary scaffold stairs is rotated to be horizontal, and the other treads connected by the link members are interlocked to be horizontal, and the angle fixing members on both sides are fixed, and the A temporary scaffold staircase characterized in that two or more temporary scaffold stairs are continuously installed in combination with horizontal materials, and long temporary scaffold stairs are installed on the uneven ground of the construction site. Continuous installation method.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
The method of consecutively installing the stairs for temporary scaffolding of the present invention is a semicircular shape on the bottom side at both ends of a pair of parallel inclined struts in order to connect and install two or more units on different undulating grounds of a building site. The notched metal fittings are fixedly protruded from both ends of the inclined strut in the end direction with the notched portions facing the bottom side, and a plurality of parallel inclined struts to which the securing metal is fixed are provided. Both sides of the front end of the tread plate are rotatably mounted on the shaft, and both sides of the rear end of the tread plate are rotatably mounted on a pair of link members arranged in parallel with the inclined column so that the tread plate can be folded. A temporary scaffold staircase is used in which one angle fixing device is fixed to each of the left and right inclined columns, and the angle fixing device is fixed to an arbitrary angle position with respect to the inclined column. A long hole is made along the direction, and a long hole with the same shape as the long hole is formed. Angle between the constant interval bolt fixing plate bored a round hole superimposed on the elongated holes form a recess fitted into the large diameter portion of the fastening bolt and attached, the long hole and a link member A fixing member is arranged, one end of the angle fixing member is axially attached to a predetermined position of the link material, and the other end is screwed to a nut fixed to the angle fixing member with a fastening bolt inserted into the long hole, The tread plate is adjusted to an arbitrary angle by the tightening and loosening operation of the fastening bolts, and horizontal members of pipes are installed at predetermined intervals on the ground where the undulations are different at the construction site, and the horizontal Locking the metal fitting with the notch in the semicircular cutout state from the upper end of the upper sloped pillar of the temporary scaffold staircase to the bottom side with the notch protruding toward the bottom side, From the lower end of the sloping column on the lower side of the temporary scaffold stairs to the horizontal member of the lower side pipe On the side of the surface, a semicircular notched metal fitting is locked with a metal fitting protruding with the notched portion directed toward the bottom surface, and the stairs for the respective temporary scaffolds are stuck on the differently undulated ground. One of the treads is turned to be horizontal, and the other treads connected by the link material are linked to make the treads horizontal to fix the angle fixing members on both sides, and temporarily combined with the horizontal member of the pipe It is characterized in that two or more scaffold stairs are continuously installed, and long temporary scaffold stairs are installed on different undulating grounds of a construction site.
[0008]
As shown in FIGS. 1 and 2, a pair of inclined pillars 3 made of an aluminum material having a substantially U-shaped cross section and having locking metal fittings 2 fixed to both ends thereof are arranged in parallel at a predetermined interval. At the same time, step plates 4 having a predetermined thickness are arranged at predetermined intervals along the longitudinal direction of the inclined columns 3 between the pair of inclined columns 3, and as shown in FIGS. The protruding shaft 5 is fitted into a through hole formed in the side surface of the inclined column 3 and is rotatably mounted on the shaft.
[0009]
Then, a pair of link members 6 are arranged in parallel with each other slightly narrower than the width between the inclined columns 3, and the shaft members 7 projecting from both sides of the rear end of the tread plate 4 as shown in FIGS. Is inserted into a through hole formed in the side surface of the robot and is rotatably mounted on the shaft. When one of the tread plates 4 is rotated, all the tread plates 4 are rotated in conjunction with each other via the link member 6. I have.
[0010]
Further, the link member 6 is shorter than the height and width of the inclined column 3 and is thinner than the inclined column 3. When the step plate 4 is folded to reduce the angle between the step plate 4 and the axial direction of the inclined column 3, As shown in FIG. 5, both the step board 4 and the link member 6 are accommodated between the pair of inclined columns 3.
[0011]
The step plate 4 is provided with an angle fixing device so as to be fixed at an arbitrary angle position with respect to the inclined support 3. As an example of this angle fixing device, as shown in FIGS. 3, a bolt fixing plate 9 in which a long hole 8 is formed along the longitudinal direction and a round through hole is formed at predetermined intervals in a long hole having the same shape as the long hole 8 is superimposed on the long hole 8. Then, a recess 12 is formed in which the large diameter portion 11 of the fastening bolt 10 is fitted.
[0012]
On the other hand, an angle fixing member 13 is provided between the elongated hole 8 and the link member 6, and one end of the angle fixing member 13 is rotatably mounted on a predetermined position of the link member 6 via a shaft 14. At the same time, the fastening bolt 10 having the other end inserted into the elongated hole 8 is screwed to the nut 15 fixed to the angle fixing member 13, and the tread plate 4 is adjusted to an arbitrary angle by tightening and loosening the fastening bolt 10. I can do it.
[0013]
Also, on the side surface of the inclined support 3, as shown in FIGS. 1 and 2, the number of the pillars 26 of the handrail frame 25 (two or The mounting plate 17 is fastened to the inclined column 3 with a bolt and nut 19 in accordance with the position.
[0014]
A through hole 20 is formed near the upper portion of the short pipe 16 as shown in FIG. 5, and a nut 21 is fixed to the short tube 16 so as to match the through hole 20. By screwing 22, the swing of the tube inserted into the short tube 16 is fixed.
[0015]
5 and 6, a through hole 24 for inserting the fixing pin 23 is formed in the vicinity of the lower portion of the short tube 16 so as to face the lower end of the handrail frame 25 as shown in FIGS. Two through holes 27a and 27b for inserting the fixing pins 23 at predetermined intervals along the longitudinal direction of the pillar 26 are also formed in the lower portion of the pillar 26.
[0016]
Next, a method for installing the temporary scaffold stairs will be described. First, a handrail frame 25 is attached to the stairs 1 as shown in FIG. At this time, the position at which the pillar 26 of the handrail frame 25 is attached to the socket fitting 18 attached to the inclined support 3 is determined by predicting the angle at which the stairs 1 are bridged. Through holes 27a and 27b are formed in two places at an interval of about 100 mm.
[0017]
The following three methods shown in FIG. 6 can be used for attaching to the socket fitting 18. As the mounting method 1, the lower end of the pillar 26 is supported by a fixing pin 23 inserted into a through hole 24 formed in the short pipe 16 of the socket fitting 18.
[0018]
As the mounting method 2, the lower through-hole 27a at the lower portion of the pillar 26 is made to coincide with the through-hole 24 formed in the short pipe 16, and the fixing pin 23 is inserted into these through-holes to be mounted.
[0019]
In the third mounting method, the upper through-hole 27b below the pillar 26 is made to coincide with the through-hole 24 formed in the short tube 16, and the fixing pin 23 is inserted into these through-holes to be mounted.
[0020]
The inclination angle of the stairs 1 can be adjusted in a range of 15 degrees to 70 degrees. If this is divided into three stages according to the inclination angle, for example, 15 degrees to 45 degrees as the first stage and 45 degrees as the second stage 60 to 70 degrees as the third stage.
[0021]
When the method of attaching the pillar 26 of the handrail frame 25 to the inclined section is applied from the above three methods, when the inclination angle is 15 degrees to 45 degrees, the attachment method 1 is used, and the inclination method is 45 degrees to 60 degrees. In this case, mounting method 2 can be used, and when the angle is 60 to 70 degrees, mounting method 3 can be used.
[0022]
According to the mounting method 1, the height of the handrail is the highest, and as the mounting methods 2 and 3, the handrail height is gradually reduced. Note that this is an example, and other divisions can be considered depending on the shape of the handrail frame and the number of mounting holes, and various combinations can be considered.
[0023]
In this manner, the handrail frame 25 is attached to the appropriate position of the socket bracket 18 of the inclined support 3 with the fixing pins 23 by predicting the inclination angle of the stairs 1, and the bolts 22 are further screwed and fixed. The latch 2 on the upper end side of the column 3 is locked to, for example, a horizontal member of a scaffolding frame installed on the upper side, and the latching bracket 2 on the lower end side of the inclined column 3 is fixed to the lower side of the scaffolding frame installed on the lower side. Lock to horizontal members. In addition, when installing on the ground, you may lay a laying board etc. and mount the latch 2 directly on it.
[0024]
When the locking of the inclined column 3 is completed, the fastening bolt 10 disposed on the side surface of the inclined column 3 is loosened, and the large diameter portion 11 of the bolt is separated from the recess 12 formed by the elongated hole 8 and the bolt fixing plate 9. The fastening bolt 10 is slidable along the elongated hole 8.
[0025]
Then, one of the tread plates 4 is turned so as to be horizontal by hand. When one of the treads 4 is rotated horizontally, the other treads 4 connected by the link members 6 also become horizontal. At this time, the angle fixing member 13 connected to the link member 6 also moves in conjunction with it, and the fastening bolt 10 for fixing the angle fixing member 13 also slides along the long hole 8.
[0026]
When the tread plate 4 becomes horizontal, the large-diameter portion 11 of the fastening bolt 10 is fitted into the recess 12 formed by the elongated hole 8 and the bolt fixing plate 9, and then the fastening bolt 10 is tightened to fix the angle fixing member 13. Then, the installation of one stair 1 is completed.
[0027]
Then, two or more stairs 1 are continuously installed by installing horizontal members at predetermined intervals and locking the metal fittings 2 at both upper and lower ends of the stairs 1 to the horizontal members, thereby forming a long stair. It is also possible to configure, and it is possible to cope with going up and down to a high place or the like.
[0028]
As described above, since the locking fittings 2 are fixed to both ends of the stairs 1, the stairs can be formed anywhere by locking the locking fittings 2 at both ends to a horizontal member such as a pipe appropriately installed at a construction site. It can be easily installed, and it is also possible to form a long stair by continuously installing two or more stairs by combining with a horizontal member such as a pipe, and it is possible to cope with ascending and descending to a high place.
[0029]
As described above, the height of the handrail frame 25 attached to the inclined support 3 can be adjusted according to the inclination angle to be bridged, so that the handrail can be grasped without difficulty during ascent and descent, and safety is improved.
[0030]
In addition, since the angle of the tread plate 4 is adjusted after the inclined support 3 is hooked at a predetermined place, the tread plate 4 can always be adjusted horizontally without being affected by the ups and downs of the ground supporting the stairs 1.
[0031]
Next, when the stairs 1 are transported or stored, the fastening bolts 10 on the side surfaces of the inclined columns 3 are loosened to separate the large diameter portions 11 of the bolts from the recesses 12 of the bolt fixing plate 9, and the fastening bolts 10 are elongated holes. 8 to be slidable.
[0032]
When the step board 4 is folded, the link members 6 are located inside the inclined columns 3 and the height thereof is shorter than that of the inclined columns 3. Therefore, as shown in FIG. 6 can be accommodated between the inclined columns 3, and the appearance from the front becomes compact only with the inclined columns 3.
[0033]
When the tread plate 4 and the link member 6 are stored between the inclined columns 3, the large-diameter portion 11 of the fastening bolt 10 is fitted into the recess 12 of the bolt fixing plate 9, and then the fastening bolt 10 is tightened to tighten the tread plate 4 and the link member 6. Is fixed.
[0034]
When carrying the stairs 1, two people can easily carry the stairs 3 by hanging both ends of one of the inclined supports 3, and lay down when stacking a plurality of stairs 1 during carrying or storage. There is no obstacle on the inclined column 3 of the stairs 1, and even if the stairs are stacked one after another, the stairs can be stably stacked.
[0035]
The angle fixing device of the above embodiment can quickly and surely adjust and fix the angle of the tread plate 4, but the angle fixing device is not limited to the above embodiment, and other methods are used. Of course, it may be fixed.
[0036]
Although the handrail frame mounting bracket of the above-described embodiment has a socket formed by a short tube, the handrail frame mounting bracket is not limited to the above-described embodiment. For example, a metal member that is formed by bending a plate material into a substantially U-shaped cross section can be used as the metal fitting for fixing. Various methods can be adopted.
[0037]
【The invention's effect】
As described above, according to the present invention, a locking metal fitting is formed in a semicircular notched state at both ends of a pair of parallel inclined struts of a temporary scaffold staircase toward the bottom side protruding from both ends thereof. At the site where the undulating condition of the site is different, the hooks at the bottom of the upper stairs and the hooks at the top of the lower stairs can be hooked onto the piers of one pipe on However, stairs for temporary scaffolding can be easily installed on the ground with different undulations at the construction site in combination with the horizontal members of the pipes. And, as the angle fixing device, a bolt fixing plate in which a long hole is formed in the side surface of the inclined column along the longitudinal direction, and a circular through hole is formed in the long hole having the same shape as the long hole at a predetermined interval. A recess is formed in which the large-diameter portion of the fastening bolt is fitted by overlapping and attaching to the long hole, and an angle fixing member is disposed between the long hole and the link member. Attaching the bolt to a predetermined position of the link material and screwing the other end inserted into the long hole to the nut fixed to the angle fixing material, and adjusting the tread plate to an arbitrary angle by tightening and loosening the fastening bolt By doing so, the tread plate can be adjusted to an arbitrary angle by the tightening and loosening operation of the fastening bolt. In particular, when the fastening bolts provided on the side surfaces of the inclined props are loosened, the fastening bolts become slidable along the long holes, and when one of the tread plates is turned horizontally, it is connected by the link material. The other treads are also leveled in tandem, and the fastening bolts are inserted into the round holes formed by the long holes and the bolt fixing plates. Can be installed. Then, when transporting or storing the stairs, loosen the fastening bolts on the side surfaces of the inclined columns to separate the bolts from the round through holes of the bolt fixing plate, and the fastening bolts are slidable along the long holes. Folded state.
[0038]
And even if the stairs are installed on the ground or floor as described above, the tread plate can always be adjusted horizontally by the angle fixing members of the left and right inclined supports without being affected by the undulating state. At the same time, the tread can be folded and stored, which facilitates transportation and storage. In addition, the combination of the horizontal members of the pipes and the stairs for temporary scaffolding makes it possible to easily set up stairs for temporary scaffolding anywhere, and it is also possible to install two or more stairs in succession, and ascend and descend to high places etc. Can also respond.
[0039]
Further, the tread plate can be adjusted to an arbitrary angle by the tightening and loosening operation of the fastening bolt.
[0040]
Further, the height of the handrail frame can be adjusted in accordance with the inclination angle, so that the handrail can be easily gripped when ascending and descending, and can be ascended and descended more safely.
[Brief description of the drawings]
1 is a front view of a temporary scaffold staircase according to the present invention,
FIG. 2 is a side view of the above,
FIG. 3 is an enlarged view of a main part with a part cut away from the above.
FIG. 4 is a view taken in the direction of arrow A, with a part of the above being cut away;
FIG. 5 is a diagram showing a state in which the tread plate is stored in an inclined column.
FIG. 6 is an explanatory view showing a state in which a handrail frame is attached to the socket fitting according to the first embodiment;
FIG. 7 is a front view of the above handrail frame;
FIG. 8 is a side view of the above.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Stairs 2 ... Locking fitting 3 ... Inclination support 4 ... Tread plate 6 ... Link material 13 ... Angle adjustment material 25 ... Handrail frame 26 ... Footnote

Claims (3)

In order to install two or more units on the ground with different undulations on the construction site, a semicircular notch on the bottom side is provided at each end of a pair of parallel inclined struts. Projecting from both ends of the inclined strut toward the end toward
A pair of links in which both front ends of a plurality of tread plates are pivotally mounted between a pair of parallel inclined struts to which this locking metal is fixed, and both rear end portions of the tread plates are arranged in parallel to the inclined struts. Temporary scaffold stairs, each of which has one angle fixing tool for fixing the tread plate at an arbitrary angle position with respect to the inclined support, and one for each of the left and right inclined supports, while being pivotally attached to the material so that it can be folded. Use
As the angle fixing device, a long hole is formed in the side surface of the inclined support along the longitudinal direction, and a bolt fixing plate in which a circular through hole is formed at predetermined intervals in a long hole having the same shape as the long hole is used. A recess is formed in which the large-diameter portion of the fastening bolt is fitted by being overlapped and attached to the hole, an angle fixing member is disposed between the long hole and the link member, and one end of the angle fixing member is linked. Attached to the predetermined position of the material, and the other end is screwed to the nut fixed to the angle fixing material with the other end inserted in the long hole, and the tread plate is adjusted to an arbitrary angle by tightening and loosening the fastening bolt I am trying to
A horizontal member of the pipe is installed at a predetermined interval on the ground with different undulations at the construction site, and a semicircular shape is placed on the horizontal member of the upper pipe from the upper end of the upper inclined column of the temporary scaffold stairs to the bottom side. At the same time as the notched metal fittings, the notched metal parts are protruded toward the bottom surface, and the lower fittings of the temporary scaffolding stairs are attached to the lower pipe horizontal members. Locking metal fittings with semi-circular cutouts on the bottom side are locked with locking metal fittings with their cutouts protruding toward the bottom side, and for each temporary scaffold on the ground with different undulations. One of the steps of the stairs is turned to be horizontal, and the other steps connected by the link material are interlocked and the angle fixing members on both sides are fixed as horizontal. Install two or more stairs for temporary scaffolding Continuously provided installation method of the temporary scaffold stairs, which is characterized in that will set up a scaffold stairs different on the ground undulating state of the construction site. Both sides of the rear end of the tread plate are pivotally mounted on a link material that is slightly narrower than the width between the inclined columns and are parallel to each other, and the height and width of the link material are shorter than the height and width of the inclined columns. The method according to claim 1, wherein the stairs for temporary scaffolding are arranged so as to be housed in a column. 3. A method according to claim 1 or 2, wherein the pillar of the handrail frame is movably attached to the inclined support in the height direction of the inclined support according to the inclination angle at which the temporary scaffold is installed. .

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