JP3646174B2 - H-shaped building frame for frame scaffolding - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an H-shaped building frame used as a temporary frame scaffold, and particularly to an H-shaped building frame that can be folded.
[0002]
[Prior art]
A portal-type building frame is well known as a temporary frame scaffold, but recently, an H-shaped frame for a frame scaffold has also been adopted in which a horizontal member is hung around the middle part of the pedestal to form an H shape. It is being done. When assembled, this H-shaped building frame hangs a scaffolding board on the horizontal frame in the center between adjacent standing frames, and hangs braces and handrails to the vertical position with the scaffolding board as a boundary. This has the advantage that a safety handrail can be secured at all times to prevent the worker on the scaffolding board from dropping during the assembly and dismantling work of the scaffold.
[0003]
[Problems to be solved by the invention]
However, if it is necessary to carry a building frame through a narrow opening such as a manhole at a construction site in the basement, etc., if it is a gate-type building frame, first insert one pedestal into the manhole, then Insert the horizontal member at the top of the gate type into the manhole as if rotating it, and pass through the narrow mouth part, and finally insert the other pedestal in the same way and carry the building frame to the construction site in the basement In contrast, in an H-shaped building frame with a horizontal member near the middle part of the pedestal, the horizontal member can be rotated even if one of the pedestals is inserted into a manhole and rotated. Since the pedestal is still protruding above the border, the horizontal member cannot be inserted into the manhole like a gate-type building frame, which is advantageous in terms of safety. Nevertheless, it is difficult to carry in from narrow areas such as manholes. It has the disadvantage that.
[0004]
An object of this invention is to make it possible to carry in from a narrow opening part, such as a manhole, making an H-shaped building frame foldable in view of said point.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention forms a building frame member by projecting a horizontal member in the vicinity of the middle part of the pedestal, and makes a pair of the building frame members face each other between the opposing horizontal members. Is provided with a connecting member formed by forming both ends of a shaft body having the same diameter as the horizontal member slightly smaller than the inner diameter of the horizontal member and forming a narrow diameter portion for inserting the horizontal member. A slide member provided with a long hole is pivotally attached to the tip of each of the slide members, and the horizontal member is fixed to a slide pin that is slidably inserted into the long hole of each slide member. The building frame is slidable along the long hole of the sliding member and is pivotably connected around both ends of the connecting material to form the building frame so that the building frame can be folded. It is characterized by having a rotation restricting means for holding the shape.
[0006]
[Action]
According to the H-type building frame for a framework scaffold of the present invention, when carrying in from a narrow mouth, the horizontal member is slid by releasing the rotation restricting means of the horizontal member and opening the pedestal to the left and right. After that, by rotating the connecting part of the horizontal member, folding the building frame from the horizontal member and overlapping the pedestal part, the building frame can be made into an elongated state, and it can be carried from a narrow hole such as a manhole, Unloading can be done easily.
[0007]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0008]
1 shows a steel pipe frame scaffolding H-shaped building frame. A horizontal member 3 is provided in the vicinity of the middle part of the pedestal 2 in a direction perpendicular to the pedestal 2, and the horizontal member 3 A slide pin through hole 5 into which the slide pin 4 is inserted is formed in the vicinity of the intermediate portion in the axial direction of the pedestal 2, and a rotation restricting through hole 7 into which the rotation restricting pin 6 is inserted at the tip. Are drilled in a direction perpendicular to the axial direction of the pedestal 2. In addition, a substantially U-shaped reinforcing member 8 is fixed between the horizontal member 3 and the pedestal 2 to reinforce the pedestal 2 and the horizontal member 3 and from the upper part to the lower part of the pedestal 2. Has fixed brace pins 9 for attaching braces or handrails at predetermined intervals.
[0009]
A connecting member 10 is disposed between the horizontal members 3 of the pair of pedestals 2 facing left and right. As shown in FIG. 2, the connecting member 10 has a shaft 11 formed in a stepped shape, the central portion thereof has a large diameter substantially equal to the outer diameter of the horizontal member 3, and the left and right small diameter portions are horizontal members. The diameter is slightly smaller than the inner diameter of 3. A collar 12 that houses the end of the horizontal member 3 is fixed to both ends of the large-diameter portion of the shaft body 11, and both ends of the shaft body 11 are orthogonal to the axial direction of the pedestal 2. A cutout portion 13 cut out in the direction is provided. The notch 13 is provided with a roll pin through-hole 15 for inserting the connecting roll pin 14 in a direction orthogonal to the notch direction, that is, in the axial direction of the pedestal 2. Further, a rotation restricting through hole 16 into which the rotation restricting pin 6 is inserted is formed at a position near the stepped portion of the small diameter portion so as to coincide with the rotation restricting through hole 7 of the horizontal member 3. doing.
[0010]
Reference numeral 17 denotes a slide member made of a flat bar cut to a predetermined length. A connecting through hole 18 is formed at one end, and a sliding long hole 19 is formed at the other end. One end portion on the side is inserted into the notch portion 13 at both end portions of the shaft body 11, the roll pin through hole 15 of the notch portion 13 and the through hole 18 of the slide member 17 are made to coincide with each other and penetrate the roll pin 14. Thus, the shaft body 11 and the slide member 17 are connected. At this time, since the inner diameter of the through hole 18 on the slide member 17 side is slightly larger than the outer diameter of the roll pin 14, the slide member 17 is rotatable about the roll pin 14.
[0011]
On the other hand, the other end portion of the slide member 17 is inserted from the end portion of the horizontal member 3, and the slide pin 4 is inserted from above through the slide pin through-hole 5 drilled near the middle portion of the horizontal member 3. The long hole 19 of the slide member 17 inserted in the horizontal member 3 is penetrated, and the tip portion is projected from the slide pin through hole 5 on the opposite side. A retaining pin 20 is attached to the protruding portion to prevent the slide pin 4 from coming off.
[0012]
In this way, the horizontal member 3 slides along the long hole 19 of the slide member 17 so that the small-diameter portion of the connecting member 10 can be moved in and out of the horizontal member 3 and the small-diameter portion of the connecting member 10. When it is pulled out from the horizontal member 3, it becomes rotatable about the roll pin 14 of the notch 13 of the connecting member 10 that connects one end of the slide member 17, and the horizontal member 3 is fixed. The pedestal 2 can be folded with respect to the connecting material 10.
[0013]
Further, when the narrow diameter portion of the connecting member 10 is immersed in the horizontal member 3, the rotation restriction is made to the rotation restricting through hole 7 of the horizontal member 3 and the rotation restricting through hole 16 of the connecting member 10. The pin 6 for insertion is inserted and fixed to both ends. A retaining lever 21 is pivotally attached to one end of the rotation restricting pin 6 and the other end is bent to prevent the retaining portion. 22, and a chain 23 is attached to the retaining portion 22, and a tip portion thereof is attached to a lower portion of the collar 12 of the connecting member 10.
[0014]
Therefore, when the H-shaped building frame 1 for a frame scaffold of the present invention is carried in from a narrow opening such as a manhole and used at a construction site in the underground, first, the connecting member 10 and the horizontal member 3 are connected. The retaining lever 21 of the rotation restricting pin 6 is rotated and pulled out from the rotation restricting through hole 7 of the horizontal member 3 and the rotation restricting through hole 16 of the connecting member 10.
[0015]
Then, the locking of the horizontal member 3 and the connecting member 10 is released and it can be detached. Next, when the pedestal 2 is opened to the left and right, the horizontal member 3 slides with respect to the shaft 11 of the connecting member 10. Thus, the end of the connecting member 10 is exposed from the horizontal member 3. The other end portion of the slide member 17 having one end portion slidably attached to the horizontal member 3 is pivotally attached to the end portion of the connecting member 10 by a roll pin 14. The left and right pedestals 2 are folded together with the frame 3 so that the pedestals 2 are overlapped.
[0016]
By doing so, a wide building frame can be deformed into an elongated shape as shown in FIG. 3, and it can be easily carried in from a narrow opening such as a manhole, which has been difficult in the past.
[0017]
In this way, it is deformed into a long and narrow shape, and is carried into the underground construction site from the narrow mouth, and when used as a scaffold, first, the pedestal 2 is expanded to the left and right by a procedure reverse to the folded procedure. Next, the left and right pedestals 2 are pulled toward the center, the horizontal member 3 is slid with respect to the connecting member 10, the small diameter portion of the connecting member 10 is immersed in the horizontal member 3, and the end of the horizontal member 3 Is stored in the collar 12 of the connecting member 10. Then, the rotation restricting pin 6 is inserted into the rotation restricting through hole 7 of the horizontal member 3 and the rotation restricting through hole 16 of the connecting member 10 so that the horizontal member 3 rotates with respect to the connecting member 10. Is used to form an H-shaped building frame 1 and used as a frame scaffold.
[0018]
【The invention's effect】
As described above, in the framed scaffolding H-shaped building frame according to the present invention, the frame member is formed by projecting the horizontal member 3 in the vicinity of the middle part of the pedestal 2, and the building frame member is paired. Between the opposing horizontal members 3, both ends of the shaft 11 having the same diameter as the horizontal member 3 are slightly smaller in diameter than the inner diameter of the horizontal member 3 to form a small diameter portion for inserting the horizontal member 3. A connecting member 10 is provided, and a slide member 17 provided with a long hole 19 is pivotally attached to the tip of each narrow end portion of the connecting member 10 so as to be pivotable, and slides into the long hole 19 of each slide member 17. The horizontal members 3 are fixed to the slide pins 4 that are freely inserted, and the horizontal members 3 are slidable along the long holes 19 of the slide member 17 and are rotated around both ends of the connecting member 10. times to hold together to form foldable to Kenwaku 1 and movably connected, the Kenwaku first shape when the Kenwaku 1 flared H shape Because with a regulating unit 6,7,16, can also be easily performed the carry from the narrow-mouthed portion of such manhole, it is possible to expand the available range of safety useful present H Katakenwaku .
[Brief description of the drawings]
FIG. 1 is a front view of an H-shaped building frame for a frame scaffold according to the present invention.
FIG. 2 is an explanatory diagram showing a component configuration of a main part.
FIG. 3 is an explanatory view showing a state in which an H-shaped building frame for a frame scaffold according to the present invention is folded.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... H-shaped building frame 2 ... Leg pillar 3 ... Horizontal member 6 ... Pin for rotation control (rotation control means)
7 ... Rotation restricting through hole (rotation restricting means) 10 ... Connecting member 16 ... Rotation restricting through hole (rotation restricting means) 17 ... Slide member

Claims (1)

A frame member is formed by projecting a horizontal member in the vicinity of the middle part of the pedestal, the building frame members are opposed to each other, and a shaft body having the same diameter as the horizontal member is provided between the opposed horizontal members . A connecting member is formed by forming a narrow portion for inserting a horizontal member with both ends slightly smaller than the inner diameter of the horizontal member, and a slide member provided with a long hole at the tip of the two small diameter portions of the connecting member. Each horizontal member is fixedly attached to a slide pin that is pivotally attached to each slide member and is slidably inserted into the long hole of each slide member, and each horizontal member can be slid along the long hole of the slide member. And a rotation restricting means for holding the building frame shape in an H shape when the building frame is expanded while the building frame is foldable by being pivotably connected around both ends of the connecting material. H-shaped building frame for framed scaffolds characterized by

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