JP2010229700A - Gable-side preceding balustrade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gable-side preceding balustrade which is easily attached as a preceding balustrade for an upper-side scaffold at the gable-side end of the scaffold, when the wedge binding-type scaffold is temporarily erected. <P>SOLUTION: When the wedge binding-type scaffold is temporarily erected, the gable-side preceding balustrade is attached as the preceding balustrade for the upper-side scaffold at the gable-side end of the scaffold. The gable-side preceding balustrade includes a horizontal brace 5 and a pair of diagonal members 6 and 7 which have one-side ends pivotally attached to both ends of the horizontal brace 5, respectively, and which cross each other. Locking members 8, which are locked to a flange 3 with a wedge hole 3a of a support 2, are provided at the side ends of the diagonal members 6 and 7 at the pivotally-attached ends of the horizontal brace 5 and the diagonal members 6 and 7, respectively. Locking hooks 9, which are locked to the horizontal stay 10 horizontally laid between the supports 2 and 2 facing each other in the width direction of a scaffold board, are provided at the other-side ends of the diagonal members 6 and 7, respectively. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a wife-side leading handrail that is attached as a leading handrail of an upper-stage scaffold to a wife-side end portion of the scaffold in the temporary setting of a scaffold at a construction site or the like.In particular, the present invention relates to a wedge-tightened scaffold. It relates to the handrail on the wife side used for temporary construction.

  For example, Japanese Laid-Open Patent Publication No. 2006-112149 discloses a wife-side leading handrail, and this wife-side leading handrail is an abbreviation composed of a pair of left and right vertical members and a horizontal member that connects the upper ends of both vertical members. This is a building-frame-type scaffold that is temporarily built with a scaffold-shaped scaffolding frame facing each other and a scaffolding plate spanned between the two building frames, and such a wife-side advance handrail should be used for a wedge-tightened scaffold I can't. The front-side handrail of the wife side is also used in the conventional wedge-binding scaffold, but the upper-side and lower-side of the left and right vertical frames of the handrail body of the rectangular frame shape are used as the front-side handrail of the conventional wedge-binding scaffold. Equipped with clamps, each clamp is fixed to the column.

  When the clamp-type wife-side leading handrail is used as described above, the work of attaching the clamp is very troublesome, and the work of attaching or disassembling the handrail is troublesome.

  In view of the above circumstances, the present invention can be easily and easily attached as a leading handrail of the upper stage scaffold to the end of the scaffold on the side of the wives when temporarily installing a wedge-tight scaffold. It aims to provide a leading handrail.

  Means for solving the above-described problems will be described with reference numerals in the embodiments described later. The invention according to claim 1 is directed to an upper stage at the end of the scaffold on the side of the foot when temporarily mounting the wedge-type scaffold. A wives-side handrail attached as a handrail of a side scaffold, comprising 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. It can be locked to the flange 3 with the wedge hole 3a of the support column 2 at the end of the horizontal member 5 or the end of the diagonal members 6 and 7 at each pivot end of the horizontal member 5 and the diagonal members 6 and 7. A locking hook 9 is provided at the other end of each diagonal member 6, 7, which can be locked to a lateral stay 10 laid across the columns 2, 2 facing each other in the scaffold plate width direction. It is characterized by providing.

  According to a second aspect of the present invention, in the stepladder according to the first aspect, the distal end portion of the locking member 8 forms an insertion piece 13 that can be inserted and removed from above the wedge hole 3 a of the flange 3. When the downward load is applied to the horizontal member 5, the peripheral wall portion 2 b is bent and the locking member 8 is moved in the horizontal direction, so that it is locked to the peripheral edge of the wedge hole 3 a of the flange 3, and from the wedge hole 3 a. A locking step 14 for preventing the insertion piece 13 from coming out is provided.

  According to a third aspect of the present invention, in the wife-side leading handrail according to the first or second aspect, the locking hook 9 includes a hook body 17 that is detachably locked to the horizontal stay 10 from above, and a horizontal stay 10. And a lock member 18 that prevents the hook body 17 from moving upward. The lock member 18 has a lock position that prevents the hook body 17 from moving upward and a release position that allows the movement. It is slidably mounted between the two, and is normally held in a locked position by its own weight.

  The effect of the invention by the above solution will be described with reference numerals of the embodiments described later. The front-side handrail 1 of the invention according to claim 1 includes a horizontal member 5 and both ends of the horizontal member 5. Each end is pivotally attached to each other, and is composed of a pair of diagonal members 6 and 7 that intersect each other. A locking member 8 that can be locked to the flange 3 with the wedge hole 3a of the support column 2 is provided at the end portions of the support columns 6 and 7, and a support column that faces the scaffold plate width direction at the other end of each diagonal member 6 and 7. A locking hook 9 that can be locked to a horizontal stay 10 that is horizontally mounted between 2 and 2 is provided. In use, an operator starts up one diagonal member 6 and the upper end of the diagonal member 6. After the locking member 8 on the part side is inserted into the wedge hole 3a of the required flange 3 of the support column 2 on the one side, the other diagonal member 7 is similarly raised, The locking member 8 at the center is inserted into the wedge hole 3a of the required flange 3 of the opposite column 2 and the lower ends of the two diagonal members 6, 7 in a state where the diagonal members 6, 7 are crossed. Since the hooks 9 and 9 of the part should just be latched to the said horizontal stay 10, it can be easily and easily attached to the end part of the wives side of a scaffold as a preceding handrail of an upper stage side scaffold. Further, when the wife-side leading handrail 1 is removed, it can be easily and easily removed in the reverse order of the attachment.

  According to the invention of claim 2, the distal end portion of the locking member 8 forms the insertion piece 13 that can be inserted and removed from above the wedge hole 3 a of the flange 3, and the insertion piece 13 faces the horizontal member 5 downward. When the load is applied, the peripheral wall 2b bends and the locking member 8 shifts in the horizontal direction, thereby locking the peripheral edge of the wedge hole 3a of the flange 3 and preventing the insertion piece 13 from coming out of the wedge hole 3a. Since the locking step portion 14 is provided, the operator can connect the safety belt attached to the worker to the horizontal member 5 of the front handrail 1 on the wife side 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. 3 (b), the horizontal member 5 is shown in the phantom line of FIG. The end portion is bent and displaced in the horizontal direction H, so that the locking step 14 of the insertion piece 13 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 13 from coming out of the wedge hole 3a. The fall of the person is prevented.

  According to the invention of claim 3, the locking hook 9 is engaged with the horizontal stay 10 so as to be detachable from above, and the hook 9 engages with the horizontal stay 10 and moves upward of the hook main body 17. The lock member 18 is slidably mounted between a lock position that prevents the hook body 17 from moving upward and a release position that allows the movement. Normally, it is held in its locked position by its own weight, and when the locking hook 9 is locked to the lateral stay 10, the operator lifts the locking member 18 held in the locked position to the unlocked position by hand, and the lock is released. Can be locked to the horizontal stay 10, and when the hand is released from the lock member 18, the lock member 18 slides to the locked position by its own weight and is held in the locked position. It becomes easy, and once the locking in the transverse stay 10, from automatically becomes locked, never come off accidentally.

(a) is a front view showing a wife-side leading handrail according to an embodiment of the present invention, and (b) is a plan view. 1A is an enlarged view of a portion indicated by an arrow A in FIG. 1A, FIG. 1B is an enlarged sectional view taken along line XX in FIG. 1A, and FIG. 1C is an enlarged sectional view taken along line YY in FIG. (a) is a drawing similar to (a) of FIG. 2 showing the attachment state of the locking member, and (b) is an explanatory view showing the action of the locking member. FIG. 1A is an enlarged view of a portion indicated by an arrow B in FIG. 1A, and FIG. FIG. 1A is an enlarged view of a portion indicated by an arrow C in FIG. 1A, and FIG. It is a perspective view which shows the attachment state of the wife side preceding handrail same as the above. It is a front view which shows the wife side preceding handrail by other embodiment of this invention.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 6, reference numeral 1 denotes a wife-side leading handrail according to the present invention. When temporary scaffolding is installed, it is attached between the supporting columns 2 and 2 facing the scaffolding plate width direction of the temporary scaffolding as a leading handrail of the upper scaffolding plate 4 newly installed from the existing lower scaffolding plate 4. . The scaffold plate 4 is illustrated in FIG.

  In the wedge-tight scaffold, an inner column 2 made of a steel pipe is disposed on the side close to the outer wall (not shown) of the building frame, and the inner column 2 is connected to the building frame by a wall connecting material (not shown). The outer support 2 is fixed to the outer wall, the outer support 2 is arranged opposite to the inner support 2, the horizontal stay 10 is attached between the inner and outer support 2, 2, and the horizontal stays 10, 10 facing the horizontal direction along the building frame. The scaffolding plate 4 is laid in a multi-stage by repeating the above-mentioned operation while spanning the scaffolding plate 4 between them and sequentially connecting the inner and outer support columns 2 toward the height. The wife-side leading handrail 1 becomes a leading handrail for the upper-stage scaffolding that is sequentially newly installed, and can ensure the safety of the erection work and improve the workability. Each strut 2 is provided with flanges 3 with wedge holes 3a at predetermined intervals in the length direction.

  As shown in FIG. 1, the wife-side leading handrail 1 has a horizontal member 5 and one end portion (upper end portion) pivoted to both ends of the horizontal member 5 by bolts and nuts 15 (pivot portions). The pair of diagonal members 6, 7 intersecting each other, and the pivotal ends of the horizontal members 5 and the diagonal members 6, 7 are connected to the end portions of the diagonal members 6, 7, A locking member 8 that can be locked in the wedge hole 3a of the flange 3 is provided, and the other end portions (lower end portions) of the diagonal members 6 and 7 are laterally disposed between the support columns 2 and 2 facing the scaffold plate width direction. A locking hook 9 that can be locked to the horizontal stay 10 is provided.

  As shown in FIGS. 2A to 2C, the locking member 8 includes a plate-like body 12 fixed to one end of the diagonal member 6 by welding, and a distal end side of the plate-like body 12 by welding. The insertion piece 13 is composed of a shaft-like body attached so as to protrude integrally downward, and this insertion piece 13 is composed of an upper small diameter shaft portion 13a and a lower large diameter shaft portion 13b. Thus, a locking step portion 14 is formed between the small-diameter shaft portion 13a and the large-diameter shaft portion 13b. In addition, the large-diameter shaft portion 13b of the insertion piece 13 is narrowed at the lower side to form a tapered guide portion 13bo.

  FIG. 3 (a) shows that the insertion piece 13 of the locking member 8 is inserted into the wedge hole 3a of the flange 3 when the wife-side leading handrail 1 is installed between the inner and outer support columns 2 and 2 facing in the width direction of the scaffolding plate. Indicates the state. The insertion piece 13 has a tapered lower portion of the large-diameter shaft portion 13b to form a tapered insertion guide portion 13bo. Therefore, when the insertion piece 16 is inserted into the wedge hole 3a of the flange 3 from above, the insertion piece 13 is inserted. Becomes easy.

  FIG. 3 (b) shows the operation of the insertion piece 13. An operator connects a safety belt (not shown) worn on his / her body to the horizontal member 5 of the front handrail 1 on the wife side. If the platform plate 4 falls from the scaffolding plate 4 by sliding the foot while working, and a downward impact load P is applied to the horizontal member 5 through the safety belt, as shown by the phantom line in FIG. Then, the horizontal member 5 is bent and the end of the horizontal member 5 is displaced in the horizontal direction H, so that the locking step 14 of the insertion piece 13 is moved to the peripheral edge 3ao of the wedge hole 3a of the flange 3 as shown by the solid line in FIG. The locking prevents the insertion piece 16 from coming out of the wedge hole 3a, thereby preventing the wife-side safety handrail 1 from coming off the support column 2 and preventing the operator from falling.

  In order to attach the insertion piece 13 of the locking member 8 to the plate-like main body 12, the diameter of the insertion piece 13 is small at the distal end side of the plate-like main body 12, as shown in FIG. 2 (b) and (c). An opening 12o into which the shaft portion 13a can be fitted is formed, and the upper side of the small-diameter shaft portion 13a is fitted into this, and the fitted small-diameter small shaft portion 13a is welded to the opening 12o portion of the plate-like main body 12. And then stick.

  As shown in FIGS. 4A and 4B, the locking hook 9 is attached and fixed to the other end portions (lower end portions) of the diagonal members 6 and 7 via attachment portion pieces 16. A hook body 17 that is removably engaged with the horizontal stay 10 that is horizontally mounted between the two, and a lock member that engages the horizontal stay 10 and prevents the hook body 17 from moving upward (generally, 4 (refer to FIG. 4 (b)). The lock member 18 is passed through the two long holes a and b at the upper and lower portions and fixed to the hook body 14a by pins 19 and 20, respectively. Is slidably mounted between a lock position as shown in FIG. 5 and a lock release position slid upward from the illustrated position, and is normally held at the locked position as shown by its own weight.

  Therefore, when the locking hook 9 is locked to the lateral stay 10, the operator pulls the lock member 18 held at the locked position to the unlocked position by hand and locks it to the horizontal stay 10 in the unlocked state. If the hand is released from the lock member 18, the lock member 18 slides to the lock position by its own weight and is automatically held at the lock position.

  Both end portions of the lateral stay 10 are fixed to the flanges 3 and 3 of the support columns 2 and 2 facing each other in the scaffolding plate width direction through fixing brackets 22 respectively. As shown in FIGS. 5 (a) and 5 (b), the fixing bracket 22 is formed in a substantially U shape in a side view so as to straddle the flange 3 of the column 2, and is formed at the top and bottom of the tip side. A fixed shoe 23 having wedge holes 23a and 23b, the base end of which is fixed to the end of the lateral stay 10, and the wedge holes 23a and 23b of the fixed shoe 23 and the wedge holes 3a of the flange 3 are inserted and attached. And wedge 24.

  When the fixing bracket 22 is attached, as shown in FIGS. 5A and 5B, the fixing shoe 23 is straddled over the flange 3 of the column 2 and the wedge 24 is connected to the upper and lower wedges of the fixing shoe 23. What is necessary is just to insert in hole 23a, 23b and the wedge hole 3a of the flange 3, and drive it with a hammer. A raised portion 24a is formed at the lower end of each wedge 24. When the wedge 24 is pulled upward, the raised portion 24a is thick, so that it protrudes from the upper wedge hole 23a of the fixed shoe 23. This prevents the wedge 24 from being lost. In this case, the lower wedge hole 23b is formed wider than the upper wedge hole 23a (see (b) of FIG. 5), and is driven downward through the lower wedge hole 23b without being hindered by the raised portion 24a. Can be done.

  The use of the wife-side leading handrail 1 having the above-described configuration will be described. The wife-side leading handrail 1 is an upper stage newly provided from the existing lower-stage scaffolding plate 4 when temporarily installing a wedge-tightening type scaffold. As the preceding handrail of the side scaffolding plate 4, it is attached between the struts 2 and 2 facing the scaffolding plate width direction of the temporary scaffolding. First, the temporary height of the first stage scaffolding plate 4 between the inner and outer struts 2 and 2. The horizontal stay 10 is horizontally mounted at a position corresponding to the height, and the horizontal stay 5 is locked at both ends of the horizontal member 5 so that the locking hooks 9, 9 at the lower ends of the diagonal members 6, 7 can be locked. The members 8 and 8 are respectively engaged with the flanges 3 and 3 at the required height positions of the inner and outer supports 2 and 2, and the lower ends of the diagonal members 6 and 7 are crossed. By attaching the hooks 9 and 9 to the horizontal stay 10, the wife-side handrail 1 is attached. That.

  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 into the column 2 on one side. After being inserted into the wedge hole 3a of the required flange 3 from above, the other diagonal member 7 is similarly raised, and the horizontal member 5 is held in a horizontal posture, and the latching at the upper end of the diagonal member 7 is held. What is necessary is just to insert the insertion piece 16 of the member 8 in the wedge hole 3a of the required flange 3 of the support | pillar 2 on the opposite side.

  If the wife-side leading handrail 1 that becomes the wife-side end portion of the first-stage scaffold is attached as described above, the first-stage scaffold plate 4 is placed between the opposing lateral stays 10, 10 of the first-stage scaffold. Is suspended via hooks 4a, 4a at both ends thereof. An operator rides on the suspended first stage scaffolding plate 4 to add the inner and outer struts 2, and the temporary height of the second stage scaffolding plate 4 is between the added inner and outer struts 2 and 2. The horizontal stay 10 is placed horizontally at the corresponding position. When the post 2 is added or the horizontal stay 10 is installed horizontally, the wife-side leading handrail 1 is attached in advance to the end of the wife on the first-stage scaffolding. Work can be performed safely by the handrail 1.

  Thereafter, the above-described operation is repeatedly performed, and the wife-side leading handrail 1 is attached as a leading handrail of the newly installed upper-stage scaffold at the end of the scaffolding side. FIG. 6 shows a state in which the handrail 1 is attached to the end of the scaffold on the side of the wife. In this case, the wife-side leading handrail 1 may be placed as it is between the inner and outer struts 2 and 2 of the scaffolding of each step and on the lateral stay 10, or after serving as a leading handrail, The slide 1 may be removed and attached as the preceding handrail 1 of the next upper stage side scaffold.

  In FIG. 6, reference numeral 25 denotes a handrail member spanned between the support columns 2 and 2 facing in the length direction of the scaffolding plate, and fixing brackets 26 are provided at both ends of each handrail member 25, respectively. Each fixing bracket 26 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 brackets 22 provided at both ends of the horizontal stay 10, respectively. A fixed shoe 27 having a wedge hole (not shown) on the side and having a base end attached to the handrail member 25, and the wedge hole of the fixed shoe 27 and the wedge hole 3a of the flange 3 are inserted. The end portion of each handrail member 25 is fixed to the flange 3 of the support column 2 by the fixing bracket 26.

  1 to 3 and FIG. 6, the wife-side leading handrail 1 is provided with a locking member 8 at the end of the diagonal member 6, 7 side of each of the pivotal ends of the horizontal member 5 and the diagonal members 6, 7. However, the wife-side leading handrail 11 shown in FIG. 7 is provided with a locking member 8 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 and 7. . That is, in the wife-side leading handrail 11 of FIG. 7, mounting pieces 29 and 29 are attached to both ends of the horizontal member 5, and one end of the diagonal members 6 and 7 are bolts and nuts to the mounting pieces 19 and 19, respectively. 15 (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 is the same as the wife-side leading handrail 1 and has a flange. An insertion piece 13 that can be inserted / removed from above is formed in the three wedge holes 3a. When a downward load is applied to the horizontal member 5, the horizontal member 5 bends and the locking member 8 is formed. A locking step 14 is provided for locking the peripheral edge 3ao of the wedge hole 3a of the flange 3 by displacement in the horizontal direction and preventing the insertion piece 13 from coming out of the hole 3a. At the other end, a lock that can be locked to a horizontal stay 10 that is laid between the support columns 2 and 2 facing in the width direction of the scaffolding plate. Click 9 is provided. The locking hook 9 has the same structure as shown in FIGS. 4 (a) and 4 (b).

1,11 Wife-side leading handrail 2 Post 3 Flange 3a Flange wedge hole 4 Scaffold plate 5 Horizontal material 6, 7 Diagonal material 8 Locking member 9 Locking hook 10 Lateral stay 13 Insertion piece 14 Locking step 17 Hook body 18 Locking member

Claims (3)

  A temporary wedge-type handrail attached to the end of the scaffolding side as a leading handrail of the upper-stage scaffolding for temporary construction of a wedge-type scaffolding, with one end pivoted at each of the horizontal material and both ends of the horizontal material. It is composed of a pair of diagonal members that are attached to each other, and each pivotal end of the horizontal member and the diagonal member is connected to the horizontal member side end or the diagonal member side end, and to the flange with the wedge hole of the column. A locking member that can be locked is provided, and the other end of each diagonal member is provided with a locking hook that can be locked to a horizontal stay that is laid between struts facing in the width direction of the scaffolding plate. handrail.   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 leading hand according to claim 1, wherein a locking step portion is provided that locks on the periphery 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.   The locking hook includes a hook body that is detachably locked to the horizontal stay from above, and a lock member that engages the horizontal stay and prevents the hook body from moving upward. 3. The wife according to claim 1, wherein the wife is slidably mounted between a lock position that prevents the hook body from moving upward and a release position that allows the movement of the hook body, and is normally held in the lock position by its own weight. Side leading handrail.

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