JP4695433B2 - Handrail for scaffolding scaffold - Google Patents

Description

  The present invention relates to a foldable scaffolding handrail used for constructing a scaffold for various construction and civil engineering work.

  In general, for this type of frame scaffolding, the required number of buildings are erected at predetermined intervals and connected with crossed bars, and the scaffolding plates are erected between adjacent buildings in sequence. It is assumed that scaffolding members such as handrails and stairs are attached at predetermined locations.

  By the way, as a foldable handrail which comprises the said frame assembly scaffold, as disclosed by Unexamined-Japanese-Patent No. 2004-285791 (patent document 1), a pair of handrail pillars with the required height are provided, for example. A pair of upper and lower horizontal rails are pivotally mounted between the upper and lower horizontal rails, and a connecting member is pivotally mounted between the upper and lower horizontal rails. A plate-shaped holding member having a notch-shaped holding hole to be held by the pedestal, and a wedge-type member fixed to the lower pedestal to be wedged by the built-up pedestal. It has been known.

In the conventional example configured as described above, the pedestal is sequentially inserted into the holding holes on both sides while lifting the handrail upward, and is held by the pedestal with the holding member, and the wedge member Thus, each pedestal is wedged and attached in a erected manner while the handrail is built.
JP 2004-285791 A (Page 22, FIGS. 30-31)

However, the conventional example configured as described above has the following problems.
First of all, in the conventional example, the wedge members are fixedly attached to the lower ends of a pair of handrail pillars at the same height on both sides. The pedestal position where a plurality of cross braces interfere and interfere with each other must be wedged. As a result, the wedged work is very troublesome and time-consuming, and the work efficiency is poor.
Second, since the wedge member is fixedly attached to the lower end portion of the handrail column as described above, it is difficult to avoid the interference of the complicated cross bars, and the wedge operation is very troublesome and troublesome. It will take.
Thirdly, since the holding member can be held by inserting the pedestal into the circular holding hole, it can be securely held by the pedestal, but the holding work is very troublesome. In addition to being troublesome, there is a risk that it may be difficult to hold when there is a deviation or a dimensional error between adjacent pedestals.
Fourthly, in the conventional example, the middle part of the handrail pillar is held by the holding member and the lower end is only wedged by the wedge member. In addition to the fact that the pair of upper and lower horizontal rails are pivotally mounted, the upper end portion of the handrail column is not easily rattled but is also likely to become extremely unstable due to rolling. For this reason, a cross brace must be separately attached, and not only the attachment work is very troublesome as a whole, but also the work efficiency is poor.

  The present invention solves the problems of the prior art, avoids the interference of the crossed heels, can be installed quickly, reliably, stably and easily with high work efficiency. It is something to be offered.

  In order to achieve the above-mentioned object, the invention according to claim 1 is a handrail for a frame scaffolding that can be freely attached in a erected manner between the frames constituting the frame assembly scaffold, the handrails having a predetermined interval. The rails on both sides arranged in parallel, the required number of horizontal rails pivotally attached to the upper part between the railing columns on both sides via pivot pins, and the horizontal members of the building A latching member attached to each lower part of the handrail pillars on both sides for stopping, and a wedge member attached to each of the lower ends of the handrail pillars on both sides for fastening to the building leg pillars. The column is formed of a handrail for frame scaffolding, in which one of the pillars is formed in a long shape and the other is formed in a short shape in order to attach wedge members in a stepped manner. is there.

  The invention according to claim 2 is characterized in that the handrail for the frame scaffolding according to claim 1 is characterized in that a wedge member attached to at least a short handrail pillar is rotatable. It is.

The invention according to claim 3 is characterized in that the handrails for the frame scaffolding according to claim 1 or 2, wherein the hook members attached to the handrail pillars on both sides are each substantially hook-shaped. Is.

Invention of claim 4, wherein each locking member is characterized by comprising rotatably mounted to opposite sides of the handrail column upper end to allowed to engage the pedestal Kenwaku any of claims 1 to 3 The gist of the handrail for the scaffolding described in item 1 is used as a gist.

  Since the invention according to claim 1 is configured as described above, the handrail pillars on both sides are respectively constructed while the retaining members are hooked on and supported by adjacent horizontal members. It can be attached via a wedge member, and can always be attached quickly and reliably to a pedestal on which a handrail is built, with good work efficiency. In particular, both the handrail pillars are formed in a long shape and the other hand is formed in a short shape so that the wedge member is set in a stepped manner. At times, it is possible to avoid the interference of the cross braces and to perform the mounting work easily and efficiently.

  Since the invention according to claim 2 is configured as described above, when the handrail column is attached to the pedestal of the building, the wedge member is appropriately rotated and interference of the cross brace is avoided. As a result, it is possible to very easily and surely perform the wedge work of the handrail pillar.

  Since the invention according to claim 3 is configured as described above, it can be easily hooked and supported by the horizontal member of the building, and compared with a conventional holding member. It can be easily operated.

  Since the invention according to claim 4 is configured as described above, the locking member is pivotally locked to the pedestal of the building while rotating the locking member, and the upper end portions of both handrail columns are reliably supported. As a result, there is no need to install a separate brace as in the conventional example. It is.

  Hereinafter, the best mode for carrying out the present invention will be described in detail based on an embodiment shown in the drawings.

  1 to 3 show an embodiment of the present invention. In the figure, reference numeral 1 denotes a handrail for a framed scaffolding having a substantially rectangular frame shape, and 2 and 3 are metal pipes on both sides constituting the handrail 1. The long handrail pillar and the short handrail pillar 4, 4 are pivoted in the form of a bridge via attachment members 6 respectively at the upper end and the middle of the long handrail pillar 2 and the short handrail pillar 3 on both sides. The upper and lower horizontal rails 7 and 7 are bolt-type pivot pins for pivotally mounting the upper and lower horizontal rails 4 and 5 to the mounting member 6, respectively. As shown in FIG. 3, the both ends of the crosspieces 4 and 5 can be folded substantially linearly as shown in FIG. 8 is a fixed wedge member fixed outwardly to the lower end of the long handrail column 2 so as to be wedged on a leg column 25 of a building 24 to be described later, and 9 is positioned in a stepped manner with the fixed wedge member 8. A movable wedge attachment member 11 is rotatably attached to the lower end of the short handrail column 3 via a cylindrical attachment member 10 to cause the lower end of the short handrail column 3 to prevent the attachment member 10 from being pulled out. A pair of upper and lower plate-like engagement pieces each having a retaining pillar 14 for a pedestal at its front end. 13, a generally U-shaped gripping piece 15 attached to the upper and lower engaging pieces 13 so as to project outwardly so as to be positioned on the same vertical line as the engaging recess 14, It comprises a wedge 17 that can be inserted into the formed wedge hole 16. 18 is a substantially hook shape that is attached outwardly at the same level from the lower ends of the long handrail column 2 and the short handrail column 3 so as to be positioned slightly above the fixed / movable wedge members 8 and 9. It is a latching member. Reference numeral 19 denotes a locking member having a substantially U-shaped cross section attached to the upper ends of the long handrail column 2 and the short handrail column 3 to be pressed and locked to a leg column 25 of a building 24 described later. Each of the locking members 19 is formed with a curved pedestal locking recess 20 at the tip thereof, and a slotted pin hole 21 is formed on both sides of the base portion. The handrail pillar 2 and the short handrail pillar 3 are pivotally attached to the handrail pillar 2 and the short handrail pillar 3 with bolts 22 and nuts 23. In addition, 24 is a torii-shaped building that forms a frame scaffold, 25 is a pair of metal pipe pedestals on both sides constituting the frame 24, and 26 is a horizontal mount attached between the pedestals 25 in a erected manner It is a material. Reference numeral 27 denotes a crossing bar that connects the building 24, and 28 denotes a scaffolding plate that is attached between the building 24 via a grip metal fitting 29.

Next, the attachment state of the handrail 1 configured as described above will be described with reference to FIGS.
First, as shown by a two-dot chain line in FIG. 4, the handrail 1 is folded up and lifted upward while grasping the lower part of the long handrail pillar 2 and the short handrail pillar 3, respectively. The two retaining members 18 are suspended and supported by the horizontal members 26 of the building 24, and are lightly temporarily wedged with the fixed wedge members 8 along the leg columns 25 (FIGS. 5A and 6). reference). That is, the upper and lower engaging pieces 13 and the gripping pieces 15 are engaged with the leg posts 25 in a fitting manner, and the wedges 17 are lightly inserted into the wedge holes 16 of the gripping pieces 15 and temporarily wedged. Next, the upper and lower horizontal rails 4 and 5 are rotated around the pivot pin 7, and the hanging member 18 of the short handrail column 3 is hooked and supported by the horizontal members 26 of the adjacent building 24. Thereafter, the movable wedge member 9 is appropriately rotated through the mounting member 10 so that the upper and lower engaging pieces 13 and the gripping pieces 15 are engaged with the leg posts 25 in a fitting manner, and the wedge pieces 15 are wedged. The wedge 17 is press-fitted into the hole 16 and wedged (see FIGS. 5B to C and FIGS. 7 to 10). At this time, since the movable wedge member 9 is rotatably attached to the lower end of the short handrail column 3 so as to be positioned in a stepped manner with respect to the fixed wedge member 8, it is complicated around the leg column 25 to be wedged. As a result, it is possible to avoid the interference of the cross brace 27 and to wedge it easily and efficiently. When the wedge attachment of the movable wedge member 9 is completed, the wedge 17 of the fixed wedge member 8 is press-fitted into the wedge hole 16 to be wedged (see FIGS. 5D and 11). Next, after attaching the upper-layer scaffolding plate 28, the building 24, and the cross brace 27, the locking members 19 on both sides are erected while extending along the grooved pin holes 21 around the bolts 22. The locking recess 20 is pivotally locked to the upper end of the pedestal 25 and attached to complete the attachment of the handrail 1 (see FIGS. 4, 12, and 13). At this time, the handrail 1 is not only attached at its lower part to the building 24 with the latching member 18 and the fixed / movable wedge members 8 and 9 but also at its upper end with the locking member 19 to be pressed in a pressure-contact manner. Since it is a thing to be damped, it does not require a crossing as in the conventional example, and the handrail 1 does not rattle or roll when used, and is extremely stable. is there.

  On the other hand, when removing the handrail 1 from the building 24, the locking members 19 on both sides are rotated to release the press-contact locking to the pedestal 25, and the upper struts 27 are constructed. 24. After each of the scaffold plates 28 is removed, the wedges 17 of the fixed / movable wedge members 8 and 9 are removed to release the wedges from the pedestal 25. Next, after lifting the short handrail pillar 3 upward to release the latching between the latching member 18 and the horizontal member 26, the upper and lower horizontal rails 4 and 5 are rotated about the pivot pin 7 as a center. Bend in the direction of the long handrail pillar 2. After that, the elongate handrail pillar 2 is lifted upward to release the hooking of the hooking member 18 and the horizontal member 26, and the removal is completed. The removed handrail 1 is stored in a folded state as shown in FIG. 3 and stored.

  In the above embodiment, the fixed hand wedge member 8 is attached to the long handrail column 2, but the present invention is not limited to this, and the movable wedge member having the same configuration as the short handrail column 3 is used. A member may be attached. Further, the structure of the fixed / movable wedge members 8 and 9 is not limited to the embodiment, and other known ones similar to this can be adopted and used.

It is a front view which shows one Example of this invention. It is a disassembled perspective view which shows the principal part of an Example. It is a front view which shows the folded state of an Example. It is a front view which shows the attachment state of an Example. It is a top view which shows the wedge state of the fixed and movable wedge member 8 * 9 of an Example. It is an expanded sectional view which follows the II line | wire of FIG. It is an expanded sectional view which follows the II-II line of FIG. It is an expanded sectional view which follows the III-III line of FIG. It is a partially expanded front view which shows the attachment state of the latching member 18 and the movable wedge member 9 of an Example, respectively. It is a partially expanded plan view which shows the attachment state of the latching member 18 and the movable wedge member 9 of an Example, respectively. It is an expanded sectional view which follows the IV-IV line of FIG. It is a partially expanded front view which shows the latching state of the latching member 19 of an Example. It is a partially expanded plan view which shows the latching state of the latching member 19 of an Example.

Explanation of symbols

1 handrail 2 long handrail pillar 3 short handrail pillar
4 Upper horizontal beam 5 Lower horizontal beam 7 Pivoting pin 8 Fixed wedge member 9 Movable wedge member 18 Hanging member 19 Locking member 24 Building 25 Leg column 26 Horizontal member

Claims (4)

  A handrail for a scaffolding that can be attached in a erected manner between the frames constituting the scaffolding, wherein the handrails are arranged on both sides of the handrail pillars arranged in parallel at a predetermined interval. The required number of side rails pivotably attached to the upper part between the handrail pillars via pivot pins, and the latch members attached to the lower part of the handrail pillars on both sides so as to be hooked to the horizontal member of the building. And wedge members attached to the lower ends of the handrail pillars on both sides to be wedged on the pedestal, and one of the handrail pillars on both sides is long to attach the wedge members in a stepped manner. A handrail for a pair of scaffolds, wherein the other is formed in a short shape.   The handrail for a pair of scaffolds according to claim 1, wherein a wedge member attached to at least a short handrail column is rotatable. The handrail for a pair of scaffolds according to claim 1 or 2, wherein the hook members attached to the handrail pillars on both sides are each substantially hook-shaped. The frame according to any one of claims 1 to 3, wherein a locking member is pivotally attached to the upper ends of handrail columns on both sides so as to be locked to a built-up pedestal. Handrail for scaffolding.

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