JP4065835B2 - Leading handrail of frame scaffold - Google Patents

Description

  The present invention relates to a handrail for a framework scaffold installed along an outer wall of a building in a construction field such as civil engineering and architecture.

  At the construction site of civil engineering and construction, the framework scaffolding is constructed and constructed by connecting the required number of framework scaffolds in the upward and horizontal directions. I work on the scaffold.

  However, the uppermost scaffold may not have safety pillars and handrails around it, and there is a danger of terrifying the work and falling. Therefore, a handrail can always be installed around the uppermost scaffold so that the danger can be avoided and the work can be performed safely, even during the assembly or disassembly work of the frame scaffold. Various leading handrails have been proposed.

The present applicant also forms a columnar portion of the handrail as an elongated box frame shape as a preceding handrail that raises and lowers the handrail to the upper and lower stages of the building frame, and a pair of guide rollers are pivotally attached to the upper and lower positions of the column portion. The guide pillar of the building frame is sandwiched between the pillars of the building frame so that it can slide up and down, and the side rail for the railing of the handrail can be bent or extended between the columns attached to the pillars of the adjacent building frame The railing for the safety fence is extended when the support column is moved up and down, and a prior handrail has been filed so that the support column can be moved to the upper and lower building frames.
Japanese Patent Application No. 2003-111168

  However, the above-mentioned support rail of the preceding handrail has a structure with a large number of guide rollers and special stoppers because it is easy to handle by sandwiching the pillars of the building frame and sliding up and down. Since it is complicated and expensive, a slightly simpler handrail is desired.

  In view of the above points, an object of the present invention is to provide a handrail for a frame scaffold that has a simple structure and is easy to handle.

  In order to solve the above-described problems, the present invention is a preceding handrail for a frame scaffold that is installed on a frame scaffold that is assembled by arranging a desired number of building frames in the upward and horizontal directions, and is detachable to an adjacent building frame. A pair of handrail pillars that can be fixed, a link material that is pivotally supported on one end of the handrail pillar and tilted in an inward direction from the standing state along the handrail pillar, and both end portions at each free end of the link material It consists of a side fence for a safety fence that is pivotally supported, and when the handrail pillar is fixed between adjacent building frames, the link material stands up along the handrail pillar while holding the side fence for the safety fence horizontally, When one of the handrail pillars is moved in either the vertical direction, the link material pivotally supported by the handrail pillar tilts inward, and the distance between the handrail pillars is adjusted, so that the handrail pillar can be moved to the upper and lower building frames. It is characterized by that.

  According to the preceding handrail of the frame scaffold according to the present invention, a pair of handrail pillars that can be detachably fixed to an adjacent building frame, and one end pivotally supported on the handrail pillar from the standing state to the inward direction along the handrail pillar It consists of a link material that can be tilted and a side fence for a safety fence that pivotally supports both ends at each free end of the link material. When a handrail column is fixed between adjacent building frames, the link material becomes a handrail column. When the side rail for the safety fence is held horizontally and one side of the handrail column is moved either up or down, the link material pivotally supported by the handrail column tilts inward. Since the distance between the handrail pillars is adjusted and the handrail pillars can be moved to the upper and lower building frames, the structure can be reduced in weight and the weight can be reduced. The column can be lifted by hand and easily moved to the upper and lower building frames. As becomes suitable it is.

  The handrail of the frame scaffold according to the present invention can be tilted inward from a standing state along a handrail column with a pair of handrail columns that can be detachably fixed to an adjacent building frame and one end pivotally supported on the handrail column. The link material, and a safety fence reed with both ends pivotally supported on each free end portion of the link material. And if a handrail pillar is fixed between adjacent building frames, a link material will be in an upright state along a handrail pillar, the horizontal fence for safety fences will be hold | maintained horizontally, and an operator's safety will be ensured.

  And when assembling or dismantling the frame scaffold, either one of the pair of handrail pillars is unlocked, and the operator holds this handrail pillar in his hand and moves to the upper and lower building frames If you try to do this, the distance between the handrail pillars will change, but at this time, while the standing link material tilts, the side rail for the safety fence also tilts, the distance between the handrail pillars is adjusted, and The handrail post can be moved up and down without being removed.

  Then, after fixing the handrail pillar that has moved to the upper and lower stages to the building frame, if the other handrail pillar is unfixed and moved to the upper and lower stages, the distance between the handrail pillars will be closer However, when the tilted link material is rotated so that it returns to the standing state and the distance between the handrail columns is adjusted, and finally the pair of handrail columns are fixed to the upper and lower building frames, the link material is As a result, the horizontal rail for the safety fence is held horizontally, and the safety of the worker can be ensured.

  As described above, the preceding handrail includes a pair of handrail pillars, a link material that is pivotally supported by the handrail pillars and can be tilted inward from an upright state, and a safety fence laterally spanned between the link materials. It has a simple structure consisting of a heel, is lightweight, is easy to handle, and is suitable as a leading handrail.

  Embodiments of the present invention will be described below with reference to the drawings.

  Reference numeral 1 in the figure denotes a frame scaffold installed around a building site or the like. A plurality of building frames 2 are erected in parallel, and braces 4 are provided between the pillars 3 of each building frame 2, and horizontal members 5. The scaffolding plates 6 are erected between each other. 7 is a preceding handrail of the frame scaffold of the present invention attached to the frame scaffold 1, and a pair of handrail pillars 8 attached to the adjacent building frame 2, and a side fence 9 for a safety fence spanned between these handrail pillars 8, 9 '.

  The handrail column 8 is a prismatic column member, and a locking piece 10 is provided projectingly provided on the side of the intermediate portion as a fixing means for locking and supporting the horizontal frame member 5 of the building frame 2. In addition, on the lower side thereof, a holding tool 11 is provided as a fixing means for holding the pedestal 3 of the building frame 2 so as not to wobble. Here, the locking piece 10 has substantially the same structure as the locking hook provided at both ends of the general-purpose scaffolding plate 6. Further, as shown in FIG. 3, the holding device 11 includes a substantially U-shaped holding piece 12 and a wedge 14 that can be inserted into and removed from a through-hole 13 formed in the holding piece 12. After holding the pedestal 3 of the building frame 2 with the holding piece 12, the wedge 14 is driven into the through-hole 13 so as to prevent it from being fixed.

  In addition, support pieces 15 and 15 'are provided on the side of the middle portion of the handrail column 8 so as to protrude vertically, and link members 16 and 16' are rotated on the support pieces 15 and 15 ', respectively. Axis is freely attached. Each of the link members 16, 16 'has a substantially similar structure, and is a link member main body 17, 17', which is a plate member having a substantially U-shaped cross section in which a concave portion slightly wider than the handrail column 8 is formed. It is formed of bent connection pieces 18 and 18 'fixed to the base end portion and attachment pieces 19 and 19' fixed to the tip end portion.

  When the link members 16 and 16 'are in the standing state, as shown in FIG. 4, the handrail pillar 8 is fitted into the recesses of the link body bodies 17 and 17' so that the standing state is maintained. On the other hand, when the link members 16, 16 ′ are rotated inward and tilted, the end of the connecting piece 18 ′ of the lower link member 16 ′ contacts the side surface of the handrail column 8 as shown in FIG. In this case, the upper link member 16 is similarly held in a substantially horizontal state by an intermediate link member 20 to be described later. Accordingly, the rotation range of each link member 16, 16 ′ is restricted to the range from the vertical standing state to the inward direction to the substantially horizontal position.

  In addition, one end of the side rails 9 and 9 'for the safety fence is pivotally supported on the attachment pieces 19 and 19' at the tip portions of the link members 16 and 16 ', and The intermediate portions are linked by the intermediate link member 20, and the inclination angles of the horizontal ribs 9 and 9 'spanned in two stages are synchronized.

  Further, the mounting pieces 19, 19 'are provided with rotation restricting bodies 21, 22 for restricting the rotation range of the reeds 9, 9', and the front ends of the reeds 9, 9 'are restricted from rotation. The link member main bodies 17 and 17 ′ are controlled to be held substantially horizontally when they are tilted by contacting the body 21, and the leading ends of the reeds 9 and 9 ′ are in contact with the rotation restricting body 22. The horizontal reeds 9 and 9 'are maintained in a horizontal state, and the horizontal reeds 9 and 9' and the link members 16 and 16 'are bent when the handrail pillars 8 and 8' are moved up and down. Is designed to be performed smoothly. The link material bodies 17 and 17 ′ are maintained substantially horizontal when tilted so that the tilted link material bodies 17 and 17 ′ are pushed by the horizontal ribs 9 and 9 ′ and smoothly folded to stand up. It is only necessary to maintain an appropriate angle so that it can be folded smoothly even if it is not horizontal.

  Further, as shown in FIG. 5, the link members 16 and 16 ′ and the handrail column 8 are formed with uneven portions 23 and 23 ′ that match each other, and when the link materials 16 and 16 ′ stand up, 23 'matches, so that the standing state of the link members 16, 16' can be held lightly. A plurality of handles 24 and 25 are attached to the handrail column 8 to improve workability when the handrail column 8 is moved up and down.

  Thus, when the frame scaffold 1 is assembled upward, for example, as shown in FIG. 6, the operator first holds the leading handrail 7 held in a gate shape from the ground while holding it by hand. The locking pieces 10 of the preceding handrail 7 are locked and supported and fixed to the horizontal members 5 of the building frame 2 adjacent to the scaffolding, and the holding tool 11 is held by the pedestal 3 of the building frame 2. The handrail column 8 is fixed so as not to wobble to form a safety fence (a). As a result, the worker can work by moving up to the upper scaffolding plate 6 with the safety fence installed.

  Further, when the scaffold is further installed on the upper stage, the retainer 11 of the leading handrail 7 is sufficiently fixed by the locking piece 10 even without being wedged. 6 is raised, and the second-stage building frame 2, the bracing 4 and the scaffolding plate 6 are assembled (b). Subsequently, when the fixing of the handrail pillar 8 of either one of the preceding handrails 7 to the horizontal member 5 is released, and the handles 25 and 24 of the handrail pillar 8 are sequentially lifted upwards with the hand, The link members 16 and 16 'are inclined inward, and the reeds 9 and 9' are inclined obliquely. Then, when the handrail column 8 is lifted to the upper scaffolding position and the locking piece 10 is locked to the horizontal member 5 of the upper building frame 2, the link members 16 and 16 'are supported in a substantially horizontal state ( c).

  Subsequently, when the fixing of the other handrail column 8 to the horizontal member 5 by the locking piece 10 is released and the handles 25 and 24 of the handrail column 8 are sequentially lifted upward by the hand, the tilted link member 16, When 16 'is pushed upward and is in an upright state, the locking piece 10 is locked to the horizontal member 5 of the building frame 6 and supported and fixed (d). If a scaffold is to be assembled on the upper stage, the same operation as above is repeated. If the scaffold is not assembled on the upper stage, the wedge 14 is driven into the holding tool 11 and fixed so that the leading handrail 7 does not wobble.

  On the other hand, when the frame scaffold 1 is dismantled, the preceding handrail 7 is sequentially lowered to the lower stage one step at a time by disassembling by performing a procedure reverse to the above.

  Thus, the preceding handrail 7 of the present invention includes a pair of handrail columns 8 that can be detachably fixed to the building frame 2, and one end pivotally supported on the handrail columns 8 along the handrail columns 8 from the standing state to the inward direction. The link material 16, 16 'that can be tilted to the side and the horizontal fences 9, 9' for the safety fence spanned between the link materials 16, 16 'make the structure simple, inexpensive and lightweight. It is easy to handle and easy to work with. The link members 16 and 16 'are formed on the handrail column 8 by two. However, the link members 16 and 16' may be formed one by one, or the link members 16 and 16 'are attached to only one side of the handrail column 8 to Various modifications may be made such that one end of the rail is pivotally attached to the link member 16, 16 'and the other end of the cross rail 9, 9' may be pivotally attached to the other handrail column.

It is a front view which shows the state which installed the preceding handrail which concerns on this invention in the frame scaffold. It is a side view of FIG. 2 is a partially omitted AA cross-sectional view of FIG. It is a partially cutaway enlarged view showing a state in which the link material is erected. It is a partially notched enlarged view which shows the state which inclined the link material to the substantially horizontal direction. It is explanatory drawing explaining a mode that a frame scaffold is assembled using the preceding handrail which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Frame scaffold 2 ... Building frame 3 ... Leg pillar 4 ... Bracing 5 ... Horizontal material 6 ... Scaffolding board 7 ... Leading handrail 8 ... Handrail pillar 9, 9 '... Recumbent 10 ... Locking piece (fixing means)
11: Holding device (fixing means) 16, 16 '... Link material

Claims (1)

  A pair of handrail pillars that can be detachably fixed to an adjacent building frame, and a pair of handrail pillars that can be detachably fixed to an adjacent building frame. A link material that can be tilted in an inward direction from a standing state along a handrail pillar, and a safety fence that has both ends pivotally supported on each free end of the link material, When a handrail pillar is fixed between adjacent building frames, the link material stands up along the handrail pillar to hold the horizontal fence for the safety fence horizontally while moving one of the handrail pillars up or down. And a handrail for the frame scaffolding, wherein the link material pivotally supported by the handrail pillar tilts inward, and the distance between the handrail pillars is adjusted so that the handrail pillar can be transferred to the upper and lower building frames.

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