JP4025706B2 - Safety handrail - Google Patents

Description

  The present invention relates to the assembly of a single-pipe scaffolding that is constructed in such a manner that a plurality of support columns that are vertically connected are arranged side by side in a construction work site, and scaffolding plates are assembled in a plurality of vertical stages between adjacent support columns in the longitudinal direction of the scaffolding plate. The present invention relates to a safety handrail to be attached as a temporary temporary handrail for a newly installed upper stage side scaffolding plate from an existing lower stage side scaffolding plate using an insertion part such as a flange with a hole provided in a support column.

  Although the conventional safety handrail cannot specifically list publicly known documents, a rectangular frame is formed by arranging a plurality of middle rails on a peripheral frame formed by a pair of side ridges and upper and lower side ridges. The rectangular frame-shaped handrail is lifted from the existing lower stage scaffolding plate to the newly installed upper stage scaffolding plate, and is attached to both adjacent struts.

  The safety handrail as described above has a rectangular frame shape, which increases the weight and is difficult to hold by an operator, is troublesome to carry with the existing lower-stage scaffolding plate, and has a rectangular frame shape, It is necessary to lift the safety handrail on the lower scaffolding board so that the worker will be aged, and to perform the installation work with the newly installed upper scaffolding board, so the installation work of the safety handrail is very troublesome, It also took a lot of time and effort.

  An object of the present invention is to provide a safety handrail that can be reduced in weight, can be easily transported on an existing lower scaffolding plate, can be easily operated, and can be easily attached in a short time.

The safety handrail according to the first aspect of the present invention is provided with reference numerals of the embodiments described later, and a plurality of support pillars 2 that are added in the vertical direction are juxtaposed, and a scaffold plate 3 is interposed between the adjacent support pillars 2 and 2. When assembling the scaffold 4 to be assembled over the safety, using the insertion part 5 provided in the support column 2, a safety to attach as a temporary temporary handrail of the newly installed upper stage scaffolding board 3 from the existing lower stage scaffolding board 3 In the handrail 1 , a saddle 6 attached so as to follow one of the adjacent columns 2, 2, and a handrail body 7 that is pivotally attached to the upper end of the saddle 6 and can be folded and superposed on the saddle 6. The hook 6 is provided with a first hook 8 that can be hooked on the insertion portion 5 of the column 2 on the upper side, and the other portion of the column 2 below the first hook 8. A second hook 9 that can be hooked on the insertion portion 5 is provided. A safety handrail formed by providing a latching can hook 11 into the insertion portion 5 of the other tower 2 pillars 2,2, both pivot when superimposed by folding the Tate杆6 and the handrail main body 7 The fixing means 20 for fixing the edge parts on the opposite side to the part is provided.

  According to a second aspect of the present invention, in the safety handrail according to the first aspect, the hook 6 is provided with an engagement support piece 19 having a concave portion 19a that can be engaged with the outer peripheral surface of the column 2 below the second hook 9. The support member 10 provided is provided.

  The safety handrail of the invention according to claim 1 includes a scissors attached so as to follow one of the two adjacent struts, and a handrail main body which can be folded and superposed on the scissors with one end pivotally attached to the top end of the scissors. Compared to the conventional safety handrails formed in a rectangular frame shape, the number of members is less, the weight can be reduced, the manufacture is simple, and the cost can be reduced. When it is ready and not in use, it is convenient for transportation, packing and storage by folding the bag and the handrail body so that they overlap each other.

In addition, the safety handrail is provided with a first hook that can be hooked to the insertion portion of the support column on the upper side, and a second hook that can be hooked to another insertion portion of the support column below the first hook. Provided, the other end of the handrail body is provided with a hook that can be hooked to the insertion part of the other strut of both struts, and in use, on the existing lower stage scaffolding plate, While holding the handrail main body side up, hook the hook on the insertion part of one of the adjacent struts, hold the heel side, and place the first hook on the insertion part of the other strut Since it only has to be hooked and the second hook is hooked to the insertion portion, the mounting operation of the safety handrail can be easily performed in a short time.
Furthermore, according to the present invention, since the hook and the handrail main body are folded and overlapped with each other, the fixing means for fixing the ends opposite to the pivotally attached portions of the two is provided. The main body can be fixed to each other in a folded state, which makes it very convenient to carry and store.

  According to the invention according to claim 2, since the hook is provided with a support member provided with an engagement support piece having a concave portion that can be engaged with the outer peripheral surface of the support column below the second hook. By engaging the engagement support piece of the support member with the outer peripheral surface of the support column, the safety handrail can be held in a more stable state.

  A preferred embodiment of the present invention will be described with reference to the drawings. First, in FIG. 1, (a) is a front view showing the safety handrail 1 according to the present invention in use, and (b) is the safety handrail 1. It is a front view which shows in the state folded. FIG. 2A is a front view showing the mounting state of the safety handrail 1, and FIG. 2B is a plan view of the mounting state. FIG. 3A is a front view for explaining the use state of the safety handrail 1, and FIG. 3B is a plan view thereof.

  As shown in FIG. 3, the safety handrail 1 is a single pipe that is assembled with a plurality of support columns 2 that are vertically connected, and a scaffold plate 3 that is bridged between the support columns 2, 2 that are adjacent to each other in the drawing. In assembling the scaffold 4, an imaginary line is shown from the existing lower stage scaffold plate 3 indicated by the solid line on the lower side of FIG. 3 to the upper side of FIG. To be installed as a temporary temporary handrail of the newly installed upper stage side scaffolding plate 3, and a hook 6 attached so as to follow one of the two pillars 2, 2 adjacent to each other, and one end at the upper end of the bowl 6 A handrail main body 7 which is pivotally attached and can be folded and polymerized with respect to the collar 6 is formed in a substantially L shape.

  As shown in FIG. 1 and FIG. 2, the hook 6 is provided with a first hook 8 that can be hooked on the insertion portion 5 of the column 2 on the upper side, and below the first hook 8, A second hook 9 that can be hooked to the other insertion portion 5 is provided, and an engagement support piece 19 having a concave portion 19 a that can be engaged with the outer peripheral surface of the support column is provided below the second hook 9. A support member 10 is provided. The other end of the handrail body 7 (the end opposite to the pivot end) is provided with a hook 11 that can be hooked to the insertion portion 5 of the other strut 2 of the adjacent struts 2 and 2. ing. A U-shaped pivot bracket 12 is fixed to one end portion of the handrail body 7, and an upper end portion of the collar 6 is pivotally supported by a pin 13.

  The insertion part 5 consists of a flange member 14 fixed to each column 2 at regular intervals in the longitudinal direction, and each flange member 14 has insertion holes a as shown in FIGS. Four openings are formed around the support 2 at intervals of 90 degrees. Further, both end portions of the scaffold plate 3 are connected to the flange members 14 of the columns 2 and 2 adjacent to each other in the lateral direction of the single tube scaffold 4 (width direction of the scaffold plate 3), as shown in FIG. The horizontal stays 15 and 15 are hooked by hooks 16 for hooking. In FIG. 3, reference numerals 17 and 18 denote an upper rail and a middle rail, which are permanent handrail materials installed after the safety handrail 1 is temporarily installed.

  The first hook 8 on the upper side of the collar 6 forming the safety handrail 1 is perpendicular to the collar 6 via the U-shaped frame piece 8c as shown in FIGS. 5 (a) and 5 (b). A pin-shaped hook body 8a is attached to the tip of the fixed horizontal support arm 8b so as to protrude downward. As can be seen from the plan views of FIGS. 2 (b) and 3 (b), the horizontal support arm 8b extends substantially along the axis of the handrail body 7 and is formed so that the tip side is bent inward. .

  As shown in FIGS. 6A and 6B, the second hook 9 below the first hook 8 has a wedge-shaped hook body at the tip of a horizontal support arm 9b that is fixed to the flange 6 vertically. 9a is integrally formed so as to protrude downward. The support member 10 below the second hook 9 has an engagement support portion having a concave portion 19a that can be engaged with the outer peripheral surface of the support column 2 at the front end portion of the horizontal support arm 10a fixed perpendicularly to the flange 6. The piece 19 is attached.

  FIG. 7A is a front view showing the handrail body 7 separated from the ridge 6, and FIG. 7B is a bottom view. As can be seen from this drawing, the hook 11 provided at the end opposite to the pivoting end of the handrail main body 7 is substantially omitted from the front end side of the mounting angle member 11b fixed to the end of the handrail main body 7. The hook main body 11a formed in a letter shape is fixed, and the hook main body 11a is hooked to the insertion portion 5 of the other strut 2 of the adjacent struts 2 and 2 adjacent to each other. . 11c is a reinforcing piece attached to the inner corner of the angle member 11b.

  Further, when the bag 6 and the handrail main body 7 are folded and overlapped with each other as shown in FIG. 1 (b), a fixing means 20 is provided for fixing the ends opposite to the pivoting portions. It has been. The fixing means 20 is configured such that the butterfly bolt 21 attached to the lower end of the heel 6 and the wing bolt 21 on the heel 6 side are screwed together when the heel 6 and the handrail body 7 are folded. And a nut 22 (see (a) and (b) of FIG. 7) fixed to an end portion of the lower side surface. As shown in FIGS. 1 and 2, the butterfly bolt 21 is screwed into a nut 23 fixed to the lower end portion of the flange 6, and is inserted into a bolt insertion hole 24 (FIG. ))).

  Therefore, when the heel 6 and the handrail body 7 are folded and overlapped, the wing bolt 21 on the heel 6 side is screwed to the nut 22 on the handrail body 7 side, whereby the heel 6 and the handrail body 7 are connected. They can be fixed together in a folded state, which makes them very convenient to carry and store. Further, the butterfly bolt 21 is attached to the side of the heel 6 and the nut 22 is attached to the lower surface side of the handrail main body 7, even if the handrail main body 7 is handed when the safety handrail 1 is used. This is because there is no protrusion on the side and it is safe.

  Next, the usage method of the safety handrail 1 comprised as mentioned above is demonstrated centering on FIG. In FIG. 3, the safety handrail 1 shown by a solid line is an existing lower stage scaffolding plate in the single pipe scaffold 4, and the safety handrail 1 shown by an imaginary line is a new upper stage scaffolding board that has not yet been bridged, The handrail 1 is attached to the columns 2 and 2 as a temporary provisional handrail of the newly installed upper stage scaffolding plate 3 from the existing lower stage scaffolding board 3.

  When the safety handrail 1 is not used, as shown in FIG. 1B, the heel 6 and the handrail body 7 are folded so as to overlap each other, and the butterfly bolt 21 of the fixing means 20 on the side of the heel 6 is attached to the handrail body. The nut 22 on the 7 side is screwed and fixed. When installing the safety handrail 1 on the single-tube scaffold 4, the folded safety handrail 1 is carried by the worker M on the existing lower-side scaffold plate 3 in the scaffold 4 to a predetermined position where the safety handrail 1 is temporarily installed. To do.

  Accordingly, the worker M releases the fixing of the safety handrail 1 that has been transported by the fixing means 20 on the existing lower-stage scaffolding plate 3 and holds the handrail main body 7 side in an upright state. The hook body 11a (see FIG. 7) of the hook 11 is inserted into the insertion hole a of the uppermost flange member 14 of the support column 2 shown on the left side of FIG.

  Thereafter, as shown in FIG. 3, the worker M grasps the side of the heel 6 with both hands, and the pin-like hook body 8a of the first hook 8 is shown on the right side of FIG. 14 (see (a) and (b) of FIG. 5) and the wedge-shaped hook body 9a of the second hook 9 is inserted into the third-stage flange member 14 of the column 2 The hole a is inserted and latched (see FIGS. 6A and 6B), and the engagement support piece 19 of the support member 10 below the second hook 9 is engaged with the outer peripheral surface of the column 2. (See (a) and (b) in FIG. 6). Thereby, the attachment of the safety handrail 1 as the preceding temporary handrail of the upper stage scaffolding plate 3 newly provided from the existing lower stage scaffolding plate 3 is completed.

  In the safety handrail 1 attached in this way, the first hook 8 and the second hook 9 of the heel 6 are hooked on the flange member 14 of one column 2, and the hook 11 of the handrail body 7 is the flange member of the other column 2. By being hooked on 14, it is fixed and fixed in a stable state. In addition, as shown in FIGS. 2B and 3B, the safety handrail 1 has an upper rail 17 and a middle rail, which are the main handrail materials to be installed from now on. It is attached at a position slightly outside of 18.

  As described above, after the safety handrail 1 is temporarily installed on the pillars 2 and 2 adjacent in the longitudinal direction of the scaffold plate 3, the upper scaffold plate 3 is bridged as shown by the phantom line in FIG. As shown in FIG. 3 (b), the scaffold plate 3 is hooked to the horizontal stays 15 and 15 connected to the flange members 14 and 14 of the columns 2 and 2 adjacent to each other in the width direction of the scaffold plate 3. It is bridged by hooking with 16,16.

  After the upper-side scaffolding plate 3 is bridged, an upper rail 17 that is a handrail material provided at a position substantially the same as the handrail main body 7 of the safety handrail 1 is provided above the upper-side scaffolding plate 3 and the safety handrail. The intermediate rail 18 is bridged to the support columns 2 and 2 at substantially the same height as the hooking position of the first second hook 9. The upper rail 17 and the middle rail 18 which are the handrail members of the main installation are bridged by well-known mounting brackets 25 and 25 provided at both ends of the rails 17 and 18. In this case, as described above, since the safety handrail 1 is attached to a position slightly separated from the support 2, the safety handrail 1 does not interfere with the upper rail 17 and the middle rail 18 that are the handrail members of the main installation. .

  In the safety handrail 1 shown in FIG. 8, a hook 11 at an end opposite to the pivoting end side of the handrail body 7 is provided substantially coaxially with the axis of the handrail body 7. When it is hooked on the two insertion parts 5, the handrail main body 7 becomes a level substantially the same as the insertion part 5. FIG. According to this, the handrail main body 7 of the safety handrail 1 and the upper rail 17 which is a main handrail material can be attached to the same level.

  As described above, the safety handrail 1 according to the present invention has the saddle 6 attached so as to be attached to one of the two adjacent struts 2 and 2, and one end pivotally attached to the upper end of the saddle 6. Compared to a conventional safety handrail formed in a rectangular frame shape, the number of members can be reduced and the weight can be reduced. It is simple and can reduce the cost. When not in use, the bag 6 and the handrail body 7 are folded so that they overlap each other as shown in FIG.

  The hook 6 of the safety handrail 1 is provided with a first hook 8 that can be hooked on the insertion portion 5 of the support column 2 on the upper side, and another insertion portion of the support column 2 below the first hook 8. 5 is provided with a second hook 9 which can be hooked on the other hand, and a hook 11 which can be hooked on the insertion part 5 of the other column 2 of both columns 2 and 2 is provided on the other end of the handrail body 7. In use, the worker M holds the handrail body 7 side on the existing lower stage scaffolding plate 3 and stands the hook 11 with the insertion hole of the flange member 14 of the one column 2. After being hooked on a, the first hook 8 is hooked on the insertion hole a of the flange member 14 of the other support column 2 and the second hook 9 is connected to the lower flange member 14 by grasping the flange 6 side. The engagement support piece 19 of the support member 10 below the second hook 9 is engaged with the outer peripheral surface of the column 2 by being hooked in the insertion hole a. From, the safety handrail 1 of the attached work in a short period of time easily performed, it is possible.

  Further, in this safety handrail 1, the first hook 8 and the second hook 9 of the heel 6 are hooked on the flange member 14 of one support column 2, and the hook 11 of the handrail body 7 is connected to the flange member 14 of the other support column 2. The engagement support piece having a concave portion 19a that can be engaged with the outer peripheral surface of the column 2 below the second hook 9 is attached to the rod 6 while being fixed and fixed in a stable state. Since the support member 10 having 19 is provided, the safety handrail 1 can be held in a more stable state by engaging the engagement support piece 19 of the support member 10 with the outer peripheral surface of the column 2. .

  In the embodiment described above, the insertion portion 5 of the support column 2 is composed of the flange member 14 with the insertion hole a. However, the insertion portion 5 is not limited to the flange member 14, for example, in plan view A pocket-type insertion portion may be used in which a plurality of U-shaped frame pieces are fixed to the outer peripheral surface of the support column 2 at a required interval in the circumferential direction.

(a) is a front view showing the safety handrail according to the present invention in use, (b) is a front view showing the safety handrail in a folded state. (a) is a front view showing the mounting state of the safety handrail, and (b) is a plan view of the mounting state. (a) is a front view for explaining the use state of the safety handrail, and (b) is a plan view. (a) is the front view which shows the state which separated the bag from the handrail main body, (b) is a top view. (a) is an enlarged front view of a portion surrounded by an arrow (a) in FIG. 4 (a), and (b) is a plan view thereof. (a) is an enlarged front view of a portion surrounded by an arrow (b) in FIG. 4 (a), and (b) is a plan view thereof. (a) is a front view showing the handrail body separated from the bag, and (b) is a bottom view. (a) is a front view which shows other embodiment which shows the safety handrail which concerns on this invention, (b) is a top view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Safety handrail 2 Support | pillar 3 Scaffold board 4 Scaffold 5 Insertion part 6 竪 杆 7 Handrail main body 8 1st hook 9 2nd hook 10 Support member 11 Hook 14 Flange member 19 Engagement support part piece 19a Concave surface part 21 Fixing means

Claims (2)

When assembling a scaffold that can be assembled by laying a plurality of pillars that extend vertically, and by linking a scaffolding board between adjacent pillars, the existing lower-stage scaffolding board is used by using the insertion part provided on the pillar. from the safety handrail mounting the prior temporary railings of the upper side scaffolding plate for new,
It is formed in a substantially L shape by a scissors attached so as to follow one of both adjacent struts, and a handrail body that can be folded and polymerized with respect to the scissors by pivoting one end to the top end of the scissors,
The hook is provided with a first hook that can be hooked to the insertion part of the column on the upper side, and a second hook that can be hooked to the other insertion part of the column below the first hook. On the other end is a safety handrail provided with a hook that can be hooked to the insertion portion of the other strut of both struts ,
A safety handrail provided with a fixing means for fixing ends opposite to the pivotally attached portions when the bag and the handrail main body are folded and overlapped.   The safety handrail according to claim 1, wherein a support member provided with an engagement piece having a concave portion that can be engaged with the outer peripheral surface of the support column is provided below the second hook.

Images