JP4950238B2 - Wife side handrail - Google Patents

Description

  The present invention relates to a wife-side safety handrail that is attached between struts adjacent to each other in the width direction of a scaffolding plate at the end of a scaffold temporarily installed at a construction site or the like. The present invention relates to a wife-side safety handrail that is attached between adjacent struts at the end of a scaffold using a flange.

  As conventional wives-side safety handrails attached between the struts adjacent in the scaffold plate width direction at the end of the temporary scaffolding, publicly known documents such as patent gazettes cannot be specifically cited, but conventional wives-side safety handrails are In addition, clamps are provided on the upper and lower sides of the left and right vertical frames of the handrail body in the shape of a rectangular frame, and each clamp is fixed to a support column when attached. However, with such a wife-side safety handrail, the mounting operation of the clamp is cumbersome, and the mounting operation of the handrail is very laborious.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a wife-side safety handrail that can be easily attached between struts adjacent to each other in the scaffold plate width direction at the end of a scaffold using a flange with a wedge hole of the strut. Furthermore, the object of the present invention is to attach the anchoring hook of the scaffolding plate to the handrail itself, so that it is attached at the end of the scaffolding between the struts adjacent in the widthwise direction of the scaffolding plate at the end of the scaffolding plate. It is to provide a wife-side safety handrail capable of omitting the mounting of the horizontal stay.

  Means for solving the above-described problems will be described with reference numerals of the embodiments described later. The invention according to claim 1 relates to the flange with the wedge hole 3a of the support column 2 in temporarily installing the wedge-tightening type scaffold. 3 is a wives-side safety handrail that is attached between struts 2 and 2 that are adjacent to each other in the scaffold plate width direction at the end of the scaffold, and includes one end at each end of the horizontal member 5 and the horizontal member 5. Is composed of a pair of diagonal members 6 and 7 intersecting each other, and each pivotal end of the horizontal member 5 and the diagonal members 6 and 7 has a horizontal member side end portion or a diagonal member side end portion. , A locking member 8 that can be locked to the flange 3 of the support column 2 is provided, and a fixing bracket 9 that can be fixed to the flange 3 of the support column 2 is provided at the other end of each diagonal member 6, 7. It is formed so as to straddle the flange 3 and has wedge holes 10a and 10b on the distal end side thereof, and the base end portions of the diagonal members 6 and 7 are formed. The fixed shoe 10 is attached to the end, and the wedge 11 is inserted over the wedge holes 10a and 10b of the fixed shoe 10 and the wedge hole 3a of the flange 3. The fixed shoe 10 includes a scaffold. A hook locking shaft portion 12 for locking a plate-like locking hook 14 projecting from the end of the end of the plate 4 is connected to a wedge 11 and a fixed shoe 10 inserted in wedge holes 10a and 10b. It is characterized by being formed so as to have a certain axial length L between the end of the diagonal member mounting side. The fixed axial length L can be easily locked when the plate-shaped locking hook 14 is locked to the shaft portion 12, and the locked state of the hook 14 can be reliably maintained. This is a length necessary for this, and is about 1.5 to 2 times the width of the plate-like locking hook 14.

  According to a second aspect of the present invention, in the wife-side safety handrail according to the first aspect, the distal end portion of the locking member 8 forms an insertion piece 16 that can be inserted into and removed from the wedge hole 3a of the flange 3 from above. When a downward load is applied to the horizontal member 5, the insertion member 16 is locked to the peripheral edge of the wedge hole 3 a of the flange 3 by bending the horizontal member 5 and moving the locking member 8 in the horizontal direction. A locking step 17 for preventing the insertion piece 16 from coming out of the hole 3a is provided.

  The effect of the invention by the above solution will be described with reference numerals of the embodiments described later. The wife-side safety handrail 1 of the invention according to claim 1 includes a horizontal member 5 and both ends of the horizontal member 5. Each of the end portions of the horizontal member 5 and the diagonal members 6 and 7 has a horizontal member 5 side end portion or an oblique member side end portion. A locking member 8 is provided at the other end of each of the diagonal members 6 and 7, and the fixing bracket 9 is formed in a substantially U shape in side view, and wedge holes 10 a and 10 b are formed on the tip side thereof. A fixed shoe 10 having a base end attached to the other end of the diagonal members 6 and 7, and a wedge 11 inserted into the wedge holes 10a and 10b of the fixed shoe 10 and the wedge hole 3a of the flange 3; In use, an operator raises one diagonal member 6, and the locking member 8 on the upper end side of the diagonal member 6 is attached to either the inner or outer column 2. After inserting into the wedge hole 3 a of the required flange 3, the other diagonal member 7 is raised, and the insertion piece 16 of the locking member 8 at the upper end of the diagonal member 7 is inserted into the required flange of the column 2 on the opposite side. 3 is inserted into the wedge hole 3a, and thereafter the fixing brackets 9, 9 at the lower ends of the diagonal members 6, 7 are attached to the flanges 3, 3 of the inner and outer struts 2, 2 corresponding to the temporary height position of the scaffolding plate 4. Since it only needs to be fixed, it can be easily attached between the inner and outer struts 2 and 2 adjacent to each other in the scaffold plate width direction at the end of the scaffold. Further, since the wife-side safety handrail 1 can be folded linearly when not in use, it is not bulky and is convenient for transportation and storage.

  In particular, in the wife-side safety handrail 1, the hook hook shafts 12, 12 formed on the fixing shoes 10, 10 of the fixing brackets 9, 9 are respectively connected to the hooks on one end side of the scaffold plate 4. 14 and 14 are locked, so in the case of a conventional wedge-tightened scaffold, the lateral stay for locking the locking hooks 14 and 14 of the scaffold plate 4 is the flange 3 of the inner and outer support columns 2 and 2. Although the horizontal stays are replaced by the hook locking shafts 12 and 12 of the fixed shoes 10 and 10, the horizontal stays can be omitted. Save time and effort.

  According to the second aspect of the present invention, the distal end portion of the locking member 8 forms the insertion piece 16 that can be inserted and removed from above the wedge hole 3 a of the flange 3. When a downward load is applied to the horizontal member 5, the horizontal member 5 is bent and the locking member 8 is moved in the horizontal direction, whereby the flange 3 is locked to the periphery of the wedge hole 3 a and the insertion piece 16 is pulled out from the wedge hole 3 a. Since the locking step 17 is provided to prevent the movement, the operator can connect the safety band attached to the horizontal member 5 of the safety handrail 1 and slide his / her foot when working. When falling from the plate and a downward impact load P is applied to the horizontal member 5 through the safety belt as shown in FIG. 8 (b), the horizontal member 5 is shown in the phantom line of FIG. The end portion of the insertion piece 9 is deflected and displaced in the horizontal direction H, whereby the locking step portion 10 of the insertion piece 9 is shown in FIG. As shown in the figure, it is locked to the peripheral edge 3ao of the wedge hole 3a of the flange 3 to prevent the insertion piece 16 from coming out of the wedge hole 3a. Can be prevented from falling.

It is a partial perspective view of the temporary scaffold which attached the wife side safety handrail by one Embodiment of this invention. It is a front view which shows the use condition of the wife side safety handrail. (a) And (b) is a front view which respectively shows the use condition and folding state of the wife side handrail. (a) is an enlarged view of a portion indicated by an arrow A in FIG. 2, (b) is a plan view thereof, and (c) is a side view. It is a front view which shows the lower end part of the wife side safety handrail. (a) is an enlarged perspective view of the locking plate of the scaffolding plate locked to the hook locking shaft portion of the fixed shoe of the wife side safety handrail, (b) is a cross-sectional view taken along the line XX of (a). It is. (a) is an enlarged front view showing a locking member of the wife side safety handrail, (b) is a cross-sectional view taken along line YY of (a), and (c) is a cross-sectional view taken along line ZZ of (a). . (a), (b) is explanatory drawing which shows an effect | action of the insertion piece of a locking member. It is a front view which shows the wife side safety handrail by other embodiment.

  A preferred embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a wife-side safety handrail according to the present invention, and the wife-side safety handrail 1 is a wedge-tightening type. When temporarily installing the single-pipe scaffolding, the upper stage scaffolding plate 4 newly provided from the existing lower stage scaffolding plate 4 is utilized by using the flange 3 of the column 2 provided with the flanges 3 with the wedge holes 3a at predetermined intervals in the length direction. Is attached between the columns 2 and 2 adjacent to each other in the width direction of the scaffold plate 4 at the end of the single tube scaffold.

  In the single pipe scaffolding, an inner column 2 made of steel pipe is arranged on the side close to the outer wall (not shown) of the building frame, and the inner column 2 is connected to the outer wall of the building frame by a wall connecting material (not shown). The outer support column 2 is arranged opposite to the inner support column 2, and a horizontal stay (not shown) is attached between the inner and outer support columns 2 and 2 so as to be adjacent to each other in the horizontal direction along the building frame. The scaffolding board 4 is temporarily installed in a multi-stage shape while the scaffolding board is bridged between the horizontal stays, and the inner and outer support pillars 2 are sequentially connected to the high places. Is attached between the inner strut 2 and the outer strut 2 at the end of this single tube scaffold.

  As shown in FIGS. 1 and 2, the wife-side safety handrail 1 according to the present invention has a horizontal member 5, and one end (upper end) of each end of the horizontal member 5 is a bolt / nut 18 (pivot). Part of the diagonal members 6 and 7 intersecting each other, and at the pivotal ends of the horizontal member 5 and the diagonal members 6 and 7, A locking member 8 that can be locked in the wedge hole 3a of the flange 3 of the column 2 is provided at the end, and the other end (lower end) of each diagonal member 6 and 7 is attached to the column via an attachment piece 13. A fixing bracket 9 that can be fixed to the second flange 3 is provided.

  As shown in FIG. 4, the fixing bracket 9 is formed in a substantially U shape in a side view so as to straddle the flange 3 of the support column 2, and has wedge holes 10 a and 10 b at the top and bottom ends thereof. The fixed shoe 10 whose end is attached to the other end (lower end) of the diagonal members 6 and 7, and the wedge holes 10 a and 10 b of the fixed shoe 10 and the wedge hole 3 a of the flange 3 are inserted and attached. A hook locking shaft having a circular cross section for locking a plate-shaped locking hook 14 protruding from the end of the scaffolding plate 4 to the end of the scaffolding plate 4. The portion 12 has a certain axial length L (see FIGS. 4 (a) and 4 (b)) between the wedge 11 inserted in the wedge holes 10a and 10b and the oblique member mounting side end. Is formed.

  The axial length L of the hook locking shaft 12 can be easily locked when the plate-shaped locking hook 14 of the scaffolding plate 4 is locked to the shaft 12, and the hook 14. The length of the plate-shaped locking hook 14 (the combined width of the thickness of the hook main body 14a and the thickness of the locking member 14b) is 1.5. The length is about 2 times. As can be seen from FIG. 6B, the locking hook 14 is engaged with the hook body 14a that is detachably locked to the hook locking shaft portion 12 from above and the shaft portion 12. A lock member (generally referred to as a drop lock) 14b that prevents the hook main body 14a from moving upward. The lock member 14b is passed through the elongated holes a and b at two locations on the upper and lower sides, respectively. The pins c and d fixed to the head are slidably mounted between a locked position as shown in FIG. 6B and an unlocked position slid upward from the illustrated position. Is held in such a locked position.

  The base end portion of the fixed shoe 10 formed with the hook locking shaft portion 12 as described above is connected to the other end portions (lower ends) of the diagonal members 6 and 7 via the mounting portion piece 13 formed in a U shape in plan view. Part) at a predetermined angle.

  When the fixing bracket 9 is attached, as shown in FIGS. 4A and 4B, the fixing shoe 10 is fitted over the flange 3 of the column 2, and the wedge 11 is attached to the upper and lower wedges of the fixing shoe 10. What is necessary is just to insert in hole 10a, 10b and the wedge hole 3a of the flange 3, and drive it with a hammer. A raised portion 11a is formed at the lower end portion of each wedge 11, and when the wedge 15 is pulled upward, the raised portion 11a is thick, so that it protrudes from the upper wedge hole 10a of the fixed shoe 10. This prevents the wedge 11 from being lost. In this case, the lower wedge hole 10b is formed wider than the upper wedge hole 10a (see FIG. 4 (b)), and is driven downward through the lower wedge hole 10b without being hindered by the raised portion 15a. Can be done.

  As shown in FIGS. 7A to 7C, the locking member 8 includes a plate-like main body 15 fixed to one end portion of the diagonal member 6 by welding, and a distal end side of the plate-like main body 15 by welding. The insertion piece 16 comprises a shaft-like body attached so as to protrude integrally downward, and this insertion piece 16 comprises a small diameter shaft portion 16a on the upper side and a large diameter shaft portion 16b on the lower side. Therefore, a locking step portion 17 is formed between the small diameter shaft portion 16a and the large diameter shaft portion 16b. Further, the large-diameter shaft portion 16b of the insertion piece 16 has a lower portion thereof narrowed to form a tapered insertion guide portion 16bo.

  In order to attach the insertion piece 16 of the locking member 8 to the plate-like main body 15, as shown in FIGS. 7B and 7C, a small diameter shaft of the insertion piece 16 is formed on the distal end side of the plate-like main body 15. An opening groove 15o into which the portion 16a can be fitted is formed, and the upper side of the small-diameter shaft portion 16a is fitted into this, and the fitted small-diameter shaft portion 16a is welded to the opening groove 15o portion of the plate-like main body 15. What is necessary is just to fix.

  The use of the wife-side safety handrail 1 configured as described above will be described. This wife-side safety handrail 1 is a preceding wife-side handrail of the upper stage scaffolding plate 4 newly provided from the existing lower stage scaffolding plate 4. At the end of the single-pipe scaffolding, it is attached between the struts 2 and 2 adjacent in the width direction of the scaffolding plate 4. At the end of the single-pipe scaffolding, first, the temporary height of the first stage scaffolding plate 4 Locking members on both ends of the horizontal member 5 so that the fixing brackets 9, 9 at the lower ends of the diagonal members 6, 7 can be fixed to the flanges 3, 3 of the inner column 2 and the outer column 2 corresponding to the positions. In the state where the locking members 8 and 8 are locked to the required flanges 3 and 3 of the inner and outer support columns 2 and 2, respectively, and then the diagonal members 6 and 7 are crossed, the diagonal members 6, 7 Fixing brackets 9, 9 at the lower end of the flange 3 of the inner and outer struts 2, 2 corresponding to the temporary height position of the first stage scaffolding plate 4. And the hooks 14, 14 on one end side of the first stage scaffolding plate 4 are locked to the hook locking shafts 12, 12 of the fixing shoes 10, 10 of the fixing brackets 9, 9. The state is as shown in FIG. In this case, the locking hooks 14 and 14 on the other end side of the first stage scaffolding plate 4 are locked to a lateral stay (not shown) attached between the flanges 3 and 3 of the other inner and outer support columns 2 and 2. The

  In attaching the locking member 8, an operator raises one diagonal member 6 vertically and inserts the insertion piece 16 of the locking member 8 on the upper end side of the diagonal member 6 on either the inside or the outside. After being inserted into the wedge hole 3a of the required flange 3 of the support column 2 from above, the other diagonal member 7 is similarly raised, and the horizontal member 5 is held in a horizontal posture. What is necessary is just to insert the insertion piece 16 of a certain locking member 8 in the wedge hole 3a of the required flange 3 of the support | pillar 2 on the opposite side. After mounting the locking members 8 and 8 in this way, the fixing brackets 9 and 9 at the lower ends of the diagonal members 6 and 7 are required for the inner and outer support columns 2 and 2, respectively, with the diagonal members 6 and 7 crossed. The flanges 4 and 4 are fixed by the method described above.

  After the first stage scaffolding plate 4 is temporarily installed as described above, when the second stage scaffolding plate 4 is temporarily installed at the end of the single pipe scaffolding, the worker is placed on the first stage scaffolding plate 4 that has already been temporarily installed. In the same manner as described above, one diagonal member 6 is raised, and the insertion piece 16 of the locking member 8 on the upper end side of this diagonal member 6 is inserted into the wedge hole 3a of the required flange 3 of the strut 2 on either the inside or outside side. Then, the other diagonal member 7 is raised and the insertion piece 16 of the locking member 8 at the upper end of the diagonal member 7 is inserted into the wedge hole 3a of the required flange 3 of the column 2 on the opposite side. Then, the diagonal members 6, 7 are crossed, and the fixing brackets 9, 9 at the lower ends of the diagonal members 6, 7 are connected to the inner and outer struts 2 corresponding to the temporary height position of the second stage scaffolding plate 4. 2 to the flanges 3 and 3. When the second-stage wife-side safety handrail 1 is attached, since the first-stage wife-side safety handrail 1 is already attached, the attachment work can be performed safely. The second-stage wife-side safety handrail 1 has a hook hook shaft 12, 12 of the fixing shoe 10, 10 of both the fixing brackets 9, 9 and a hook hook on one end side of the second-stage scaffolding plate 4. 14 and 14 are locked.

  Thereafter, as the preceding wife side handrail of the upper stage scaffolding plate 4 newly established from the existing lower stage scaffolding plate 4 by the above method, it is adjacent to the width direction of the scaffolding plate 4 at the end of the single pipe scaffolding. A wife-side safety handrail 1 is appropriately attached between the columns 2 and 2. In addition, in the use of the wife side safety handrail 1, it is not necessary to attach to all of the lower end to the uppermost end of the scaffold end. A wife-side safety handrail may be attached.

  As described above, the wife-side safety handrail 1 includes a horizontal member 5 and a pair of diagonal members 6 and 7 that are pivotally attached to both ends of the horizontal member 5 and intersect each other. The horizontal member 5 and the diagonal members 6 and 7 are provided with a locking member 8 at the end of the horizontal member 5 at each pivot end, and the other end of each diagonal member 6 and 7 is provided with a fixing fitting 9. The fixing bracket 9 is formed in a substantially U shape in a side view and has wedge holes 10a and 10b on the distal end side thereof, and a fixing shoe 10 whose base end portion is attached to the other end portion of the diagonal members 6 and 7, It consists of a wedge 11 inserted over the wedge holes 10a, 10b of the fixed shoe 10 and the wedge hole 3a of the flange 3. In use, the operator raises one diagonal member 6 and After inserting the insertion piece 16 of the locking member 8 on the upper end side of the material 6 into the wedge hole 3a of the required flange 3 of the support column 2 on either the inside or outside, the diagonal material on the other side Is inserted into the wedge hole 3a of the required flange 3 of the supporting column 2 on the opposite side, and then both the diagonal members 6, 7 are inserted. Since the fixing brackets 9, 9 at the lower ends of the two diagonal members 6, 7 may be fixed to the flanges 3, 3 of the inner and outer columns 2, 2 corresponding to the temporary height position of the scaffold plate 4, the scaffolding It can be easily and easily attached between the inner and outer struts 2 and 2 adjacent to each other in the width direction of the scaffolding plate at the end.

  In the wife-side safety handrail 1, the hooks 12, 12 of the fixing shoes 10, 10 of the fixing brackets 9, 9 are connected to the hooks 14, 12 on one end side of the scaffold plate 4, 14 is locked, so in the case of a conventional wedge-tightened type scaffold, the lateral stay for locking the locking hooks 14, 14 on one end side of the scaffold plate 4 is the flange 3 of the inner and outer columns 2, 2. , 3, but the horizontal stays can be replaced by the hook locking shafts 12, 12 of the two fixed shoes 10, 10. There is an advantage that the labor of temporary work can be saved.

  Further, as can be seen from FIGS. 3 (a) and 3 (b), the wife-side safety handrail 1 can be folded linearly when not in use, so that it is not bulky and is very convenient for transportation and storage.

  FIG. 8A shows a state in which the insertion piece 16 of the locking member 8 is inserted into the wedge hole 3a of the flange 3 when the wife-side safety handrail 1 is installed between the adjacent columns 2 and 2 as described above. Indicates. Since this insertion piece 16 is tapered at the lower side of the large diameter shaft portion 16b to form a tapered insertion guide portion 16bo, the insertion piece 16 is inserted when the insertion piece 16 is inserted into the wedge hole 3a of the flange 3 from above. Becomes easy.

  FIG. 8 (b) shows the operation of the above-mentioned insertion piece 9. When the operator is working by connecting the safety belt attached to himself / herself to the horizontal member 5 of the safety handrail 1, FIG. When a downward impact load P is applied to the horizontal member 5 through the safety belt and the horizontal member 5 is bent as shown by the phantom line in FIG. The end of the horizontal member 5 is displaced in the horizontal direction H, so that the locking step 10 of the insertion piece 9 is locked to the peripheral edge 3ao of the wedge hole 3a of the flange 3 as shown in FIG. This prevents the insertion piece 16 from coming out of 3a, thereby preventing the wife-side safety handrail 1 from being detached from the column 2 and preventing the operator from falling.

  1 to 8 is provided with a locking member 8 at the end of the diagonal members 6 and 7 of the pivotal ends of the horizontal member 5 and the diagonal members 6 and 7. However, in the wife-side safety handrail 21 shown in FIG. 9, the locking member 8 is provided at the end of the horizontal member 5 on the side of the pivotal end of the horizontal member 5 and the diagonal members 6, 7. That is, in the wife-side safety handrail 21 in FIG. 9, the mounting pieces 19 and 19 are attached to both ends of the horizontal member 5, and the end portions of the diagonal members 6 and 7 are respectively bolts and nuts to these mounting pieces 19 and 19. 18 (pivot) is pivotally attached, and a locking member 8 is integrally provided at each end of the horizontal member 5, and the leading end of the locking member 8 can be inserted into and removed from the wedge hole 3 a of the flange 3 from above. An insertion piece 16 is formed, and when the horizontal member 5 is loaded with a downward load, the horizontal member 5 is bent and the locking member 8 is displaced in the horizontal direction, whereby the wedge hole of the flange 3 is formed. A locking step 17 for locking the peripheral edge 3ao of 3a to prevent the insertion piece 16 from coming out of the hole 4a is provided. 9 is provided. The fixture 9 has the same structure as shown in FIGS. 4 (a) and 4 (b).

  In FIG. 1, reference numerals 22 and 23 denote handrail members spanned between the support columns 2 and 2 facing in the length direction of the scaffolding plate, and fixing brackets 20 are provided at both ends of the handrail members 22 and 23, respectively. Each fixing bracket 20 is formed in a substantially U shape in a side view so as to be straddled over the flange 3 of the column 2 in the same manner as the fixing bracket 9 of the wife-side safety handrail 1. A fixed shoe 24 having a wedge hole (not shown) on the side and having a base end attached to the handrail members 22, 23, and a wedge hole of the fixed shoe 24 and a wedge hole 3 a of the flange 3. The end portions of the handrail members 22 and 23 are attached and fixed to the flange 3 of the support column 2 by the fixing bracket 20.

1, 21 Wife-side safety handrail 2 Strut 3 Flange 3a Flange wedge hole 4 Scaffold plate 5 Horizontal member 6 Diagonal member 8 Locking member 9 Fixing bracket 10 Fixing shoe 10a Wedge hole 10b Wedge hole 12 Hook locking shaft 14 Scaffolding plate locking hook 16 Insertion piece

Claims (2)

  A temporary safety handrail attached between the struts adjacent to each other in the width direction of the scaffolding plate at the end of the scaffold by using the flange with the wedge hole of the strut when temporarily constructing the wedge-tight scaffold, a horizontal material, One end of each horizontal member is pivotally attached to each other, and consists of a pair of diagonal members crossing each other. Each pivotal end of the horizontal member and diagonal member has a horizontal member side end or diagonal member side. A locking member that can be locked to the flange of the column is provided at the end, and a fixing bracket that can be fixed to the flange of the column is provided at the other end of each diagonal member. The fixing bracket is straddled over the flange. It has a wedge hole on the tip side, and the base end is attached to the other end of the diagonal member, and it is inserted over the wedge hole of the fixed shoe and the wedge hole of the flange. A plate-like locking hook protruding from the end of the scaffolding plate on the end side of the scaffolding plate is locked to the fixed shoe. The hook-side safety hand is formed with a certain axial length between the wedge inserted into the wedge hole and the diagonal attachment side end of the fixed shoe. Sliding.   The distal end of the locking member forms an insertion piece that can be inserted and removed from above the wedge hole of the flange, and the horizontal member is bent and engaged when a downward load is applied to the horizontal member. 2. The wife-side safety hand according to claim 1, wherein a locking step portion is provided for locking the peripheral edge of the wedge hole of the flange by preventing the insertion piece from coming out of the wedge hole by shifting the stop member in the horizontal direction. Sliding.

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