JP5848514B2 - Safety handrail - Google Patents

Description

  The present invention relates to an improvement in a safety handrail attached to a framework scaffold used in a construction site or civil engineering work.

  A safety handrail attached to a frame scaffold used in a construction site or civil engineering works, for example, as disclosed in Patent Document 1, from a pair of longitudinal members and a horizontal member constructed between these longitudinal members. It is attached to a frame scaffold comprising a plurality of frames arranged in a horizontal direction and a scaffold plate constructed between horizontal members of opposing frames.

  The safety handrail includes a handrail main body disposed between the vertical members of the opposing frame body, and attachment means for attaching the handrail main body to the frame body. A handrail rod spanned between the upper ends of the vertical columns.

  The handrail bar is slidably provided with a guide to which one end of a lifeline worn by the worker is fixed, and the safety handrail is strong enough to withstand the impact when the worker falls from the scaffolding plate. Designed.

JP 2008-025254 A

  However, in the above-described conventional safety handrail, the vertical strut made of a hollow pipe is thickened to set the strength to withstand the impact, the weight of the safety handrail is increased, and the safety handrail is transported or attached to the frame scaffolding. Work becomes difficult.

  Accordingly, an object of the present invention is to provide a safety handrail that can be made lighter than the conventional one by reducing the thickness of the vertical support column.

Means for solving the above-mentioned problem comprises a pair of front and rear longitudinal members and a transverse member constructed between these longitudinal members, and a plurality of laterally arranged frames, and the opposing frame members A safety handrail attached to a frame scaffold including a scaffold plate laid between the horizontal members , wherein the handrail main body disposed between the vertical members of the opposing frame body, and the handrail main body and a mounting means for mounting to the frame body, said the handrail body right and left pair of vertical struts, anda crosstie railing rod and below the upper was laid in the longitudinal struts, the attachment means of at least the vertical attached to strut Oite safety handrail having a pair of hooks caught by said horizontal members, each of the above-mentioned longitudinal struts to a hollow formed opposite, a hollow pipe each of these in each vertical strut by inserting the reinforcing member from a lower portion of the vertical struts It is disposed over the center, further to placing the hook facing substantially at the center of the reinforcing member, and the proximal member to the respective hook is fixed to the vertical struts, detachably on the base end side member A hook member that is mounted and hooked on the horizontal member, and the base end side member is formed in an arc shape, and a curved piece that extends along the outer periphery of the vertical column is opposed to the curved piece that extends obliquely from the curved piece. The left hook is composed of a pair of front and rear clamping pieces, and an inclined connecting portion that holds the hook member between the holding pieces, and a horizontal hook piece that is connected to the connecting portion. The connecting portion is set longer than the connecting portion of the right hook .

According to the present invention, the vertical strut is formed hollow and a reinforcing member for reinforcement is inserted into the vertical strut. Therefore, even if the thickness of the vertical strut is made thinner than before, the operator can remove it from the scaffold plate. It is possible to withstand the impact when dropped and the safety handrail can be made lighter than before. In addition, since the hook member having the hook piece is detachably attached to the base end side member fixed to the vertical support, when the hook piece is replaced, the hook member may be replaced, and the hook piece is replaced. It becomes possible more easily than before.

It is a perspective view which shows the state which attached the safety handrail which concerns on one embodiment of this invention to the frame scaffold. It is a front view which shows the safety handrail which concerns on one embodiment of this invention. FIG. 3 is an end view taken along the line XX ′ in FIG. 2. (A) is a top view which expands and shows the right side frame pressing metal fitting in the safety handrail which concerns on one embodiment of this invention, (b) is a front view of (a). (A) is a top view which expands and shows the hook of the left side in the safety handrail which concerns on one embodiment of this invention, (b) is a front view of (a). (A) is a top view which expands and shows the right hook in the safety handrail which concerns on one embodiment of this invention, (b) is a front view of (a). (A) is a top view which expands and shows the left metal fitting in the safety handrail which concerns on one embodiment of this invention, (b) is a front view of (a). (A) is a top view which expands and shows the right metal fitting in the safety handrail which concerns on one embodiment of this invention, (b) is a front view of (a).

  Hereinafter, a safety handrail showing an embodiment of the present invention will be described with reference to the drawings. The same reference numerals given throughout the several drawings indicate the same or corresponding parts.

  As shown in FIG. 1, the safety handrail A according to the present embodiment includes a pair of front and rear vertical members 1, 1 and a horizontal member 2 laid between the vertical members 1, 1. It is attached to a frame scaffold comprising a frame B arranged in series and a scaffold plate 3 constructed between the horizontal members 2 and 2 of the opposed frames B and B.

  Further, in the safety handrail A, the handrail body 4 disposed between the longitudinal members 1 and 1 of the opposing frame bodies B and B includes a pair of left and right vertical struts 40l and 40r. As shown, the vertical struts 40l and 40r are formed hollow, and the reinforcing members 46 are inserted into the vertical struts 40l and 40r, respectively.

  Describing in detail below, the safety handrail A according to the present embodiment, as shown in FIG. 1, is assembled from a lower-stage scaffolding plate (not shown) when the frame scaffold is assembled in a multi-stage shape. It is attached as a temporary temporary handrail for the newly installed upper stage scaffolding plate 3.

  As described above, the safety handrail A includes the handrail main body 4 disposed between the opposing vertical members 1 and 1, and attachment means for attaching the handrail main body 4 to the frame scaffold.

  As shown in FIG. 2, the handrail main body 4 includes a pair of left and right vertical struts 40l and 40r, a handrail rod 41 spanned between the upper ends of the vertical struts 40l and 40r, and the vertical struts 40l and 40r. The upper and lower horizontal bridges 42 and 43, and the left and right vertical bridges 44 and 45 laid between the horizontal bridges 42 and 43.

  Further, as shown in FIG. 3, the vertical struts 40l and 40r are made of hollow pipes, and reinforcing members 46 are inserted into the vertical struts 40l and 40r, respectively.

  3 shows only the right vertical column 40r, the reinforcing member 46 is also inserted into the left vertical column 40l in the same manner as the right vertical column 40r (FIG. 2).

  These reinforcing members 46 are formed of hollow pipes, and are arranged from the lower horizontal joint 43 to the approximate center of the vertical struts 40l and 40r as shown in FIG.

The attachment means for attaching the handrail main body 4 to the frame scaffolding is attached to both vertical struts 40l and 40r. From the upper side in FIG. 2, a pair of left and right frame pressers 6l and 6r, a pair of left and right hooks 5l and 5r, a pair of left and right The metal fittings 7l and 7r.

  As shown in FIG. 4, each of the frame holding metal fittings 6 l and 6 r is formed of a pair of front and rear holding metal fittings 60 and 61 that are opposed to each other, and vertical struts 40 l and 40 r that connect the holding metal fittings 60 and 61. Side bolts 62 and 63 on the side of the vertical member 1, bolts 64 penetrating the base end portions of the holding metal fittings 60 and 61 and penetrating the vertical struts 40 l and 40 r back and forth, and screwed at the ends of the bolts 64. And a mating nut 65.

  4 shows only the right frame retainer 6r, the left frame retainer 6l is symmetrical with the right frame retainer 6r and has the same configuration.

  Then, the end portions of the holding metal fittings 60 and 61 are separated from each other, and the vertical struts 40l and 40r side ends of the installation piece 62 are curved along the outer circumferences of the vertical support posts 40l and 40r. The material side 1 and 1 end portions are curved so as to follow the outer periphery of the longitudinal members 1 and 1, and the frame holding metal fittings 6l and 6r are provided with vertical columns 40l and 40r between the base end parts of the holding metal fittings 60 and 61, respectively. The bolts are fixed in the arranged state, and the longitudinal members 1 and 1 are supported by the distal end portions of the holding metal fittings 60 and 61 and the curved end portions of the installation piece 63.

  Further, the hooks 5l and 5r arranged below the frame presser fittings 6l and 6r are positioned substantially at the center of the reinforcing member 46. As shown in FIGS. The base end side member 50 fixed to 40r, and the hook member 51 which has the hook piece 51a which is attached to this base end side member 50 so that attachment or detachment and is hooked on the said horizontal member 2 are comprised.

  The proximal end side member 50 has a curved piece 50a along the outer periphery of the vertical struts 40l and 40r, and a pair of front and rear facing each other extending from the curved piece 50a. The holding members 50b and 50c are provided, and the hook member 51 is held between the holding pieces 50b and 50c.

  The curved piece 50a is welded and fixed to the outer peripheral front surfaces (scaffold plate side) of the vertical struts 40l and 40r, and the base end side member 50 has the rivet 52 with the hook member 51 sandwiched between the holding pieces 50b and 50c. , The hook member 51 is clamped between the clamping pieces 50b and 50c.

  Further, the sandwiching pieces 50b, 50b are disposed obliquely from the curved piece 50 to the front side (scaffold plate side).

  The hook member 51 is formed in an arc shape and hooked to the opposing horizontal member 2 and a connecting portion extending from the hook piece 51a and sandwiched between the sandwiching pieces 50b and 50c. 51b.

  The hook piece 51 a is arranged so as to be orthogonal to the horizontal member 2, and its lower surface is formed in a substantially semicircular shape and is set so as to contact the upper semi-periphery surface of the horizontal member 2.

  Moreover, the said connection part 51b is diagonally arrange | positioned from the said hook piece 51a to the back | inner side (anti-scaffold board side) so that the said clamping pieces 50b and 50c may be followed.

  In this embodiment, the shapes of the hook members 51, 51 in the left and right hooks 51, 5r are slightly different, and the connecting portion 51b of the left hook 51 (FIG. 5) is the connecting portion of the right hook 5r (FIG. 6). The hook piece 51a of the left hook 5l is disposed closer to the front side (scaffold plate side) than the hook piece 51a of the right hook 5r by the thickness before and after the hook piece 51a.

  Further, as shown in FIG. 6, the right hook 5r is provided with a protrusion 51c as a misassembly prevention means on the back surface (side surface of the anti-scaffold plate) of the hook piece 51a.

  Further, the metal fittings 7l and 7r attached to the lower side of the hooks 5l and 5r are arranged so as to be shifted up and down in order to avoid the brace 8 attached between the vertical members 1 and 1, as shown in FIG. The

  As shown in FIGS. 7 and 8, each of the metal fittings 7 l and 7 r is extended to the annular annular portion 70 through which the lower ends of the vertical struts 40 l and 40 r are inserted, and the longitudinal member 1 facing the annular portion 70. The extended portion 71 is extended from the rear side (anti-scaffold plate side) end of the extended portion 71 to the front side (scaffold plate side) while being curved along the outer peripheral back surface of the longitudinal member 1. It comprises a holding piece 72 and a support piece 73 extending from the front side (scaffold plate side) end portion of the extending portion 71 so as to face the front end portion of the holding piece 72.

  Then, in the state where the vertical members 1 and 1 are held by the holding pieces 72 and 72 of the metal fittings 7l and 7r, the holding pieces 72 and 72 are inserted from the holes 73a penetrating the support pieces 73 and 73 to the left and right. By driving the wedges 74 and 74 through the hole 72a penetrating the tip portion in the left and right directions, the metal fittings 7l and 7r can be fixed to the vertical members 1 and 1, respectively.

  Further, the vertical struts 40l and 40r of the handrail body A, to which the hooks 5l and 5r are attached, are inserted into the annular portions 70 and 70 of the double metal fittings 7l and 7r fixed to the vertical members 1 and 1, respectively. By hooking 5r to the opposing horizontal members 2 and 2, the safety handrail of the upper scaffolding plate 3 newly installed from the already installed scaffolding plate can be attached in advance.

  That is, in the present embodiment, the vertical struts 40l and 40r constituting the handrail main body 4 are made of hollow pipes, and the reinforcing members 46 for reinforcement are inserted into the vertical struts 40l and 40r, so that strength is required. Only a part of the vertical struts 40 l and 40 r can be reinforced by the reinforcing member 46.

  Therefore, even if the thickness of the vertical struts 40l and 40r is made thinner than before, it is possible to withstand the impact when the operator falls from the scaffold plate, and the safety handrail A can be made lighter than before. Become.

  Further, in the present embodiment, the reinforcing member 46 is provided from the lower part of the vertical struts 40 l and 40 r to substantially the center, and the hooks 5 l and 5 r are located substantially at the center of the reinforcing member 46.

  Therefore, when the impact when the operator falls from the scaffolding plate acts on the handrail body 4, it is possible to reliably prevent the vertical struts 40l and 40r from falling over by the reinforcing member 46.

In the present embodiment, the hook 5 includes a base end side member 50 welded and fixed to the vertical struts 40l and 40r , and a hook member 51 detachably attached to the base end side member 50. A hook piece 51 a that is hooked on the horizontal member 2 is formed on the member 51.

  Therefore, when the hook piece 51a is deformed, it is only necessary to replace the hooking member 51. The hooking member 51 is fixed to the base member 50 by the rivet 52, and thus is fixed to the vertical member by welding. Compared to the conventional hook, the hook piece 51a can be easily replaced.

  Further, in the right hook 5r in the present embodiment, since the protrusion 51c is provided on the back surface of the hook piece 51a, when the right hook 5r and the left hook 5l are hooked on the same horizontal member 2, The protrusion 51c makes it possible to prevent the hook piece 51a of the left hook 6l from being arranged on the back side (the anti-scaffold plate side) of the right hook 5r, that is, misassembly.

  Further, in the present embodiment, the misassembly prevention means includes the projection 51c, so that a gap is formed between the left and right hook pieces 51a and 51a that are hooked on the same horizontal member 2 when misassembled. Is easy.

  Further, in the present embodiment, since the projection 51c serving as a wrong assembly preventing means is disposed on the back surface of the hook piece 51a in the right hook 5r located on the back side, the projection 51c is provided in front of the hook piece 51a in the left hook 5l. As compared with the case of forming the wedge, the wedge 74 is not hindered when driven into the metal fitting 7l.

  Although preferred embodiments of the present invention have been described in detail above, it should be understood that modifications, variations and changes may be made without departing from the scope of the claims.

  For example, in the above embodiment, the reinforcing member 46 is made of a hollow pipe, but it may be made of a solid columnar member, and the shape and length of the reinforcing member 46 can be appropriately selected.

  In the above embodiment, the misassembly prevention means is made of the protrusion 51c. However, the present invention is not limited to this, and the right and left hooks 5l and 5r may be colored to prevent misassembly, and the protrusion 51c is provided. The position is not limited to the illustration.

  Although not shown in the drawings, the misassembly prevention means may be provided with a protrusion on one facing surface of the left and right hooks 5l and 5r facing each other at the correct mounting position, and a groove for engaging the protrusion on the other facing surface. In this case, it is possible to determine that the projection is incorrect when the projection does not engage with the groove.

A Safety handrail B Frame 1 Vertical member 2 Horizontal member 3 Scaffolding plate 4 Handrail main body 5l, 5r Hook 6l, 6r Frame presser fitting 7l, 7r Vertical bracket 40l, 40r Vertical support 41 Handrail rod 50 Base end side member 50a Curved piece 50b, 50c Holding piece 51 Hooking member 51a Hook piece 51b Connecting portion 51c Protrusion 52 Rivet 60, 61 Holding metal fittings 62, 63 Installation piece 70 Annular part 71 Extension part 72 Holding piece 73 Supporting piece 74 Wedge

Claims (1)

A frame comprising a pair of front and rear longitudinal members (1), (1) and a transverse member (2) constructed between these longitudinal members (1), (1) and arranged in a plurality of rows in the lateral direction ( (B) and a safety handrail attached to a frame scaffold (3) provided with a scaffold plate (3) installed between the horizontal members (2) and (2) of the opposing frames (B) and (B). A) and the handrail body (4) disposed between the longitudinal members (1) and (1) of the opposing frame bodies (B) and (B), and the handrail body (4) Mounting means for attaching to the frame (B), the handrail main body (4) is a pair of left and right vertical struts (40l), (40r), and an upper part installed in the vertical struts (40l), (40r) crosstie with lower handrail bar (41) (42), has, (43),
The attachment means has at least a pair of left and right hooks (5l) and (5r) that are attached to the vertical struts (40l) and (40r) and are hooked on the opposing horizontal members (2) and (2). In safety handrail (A),
The vertical struts (40l) and (40r) are formed hollow, and a reinforcing member (46) made of a hollow pipe is inserted into the vertical struts (40l) and (40r) to insert the vertical struts (40l). ), (40r) is arranged from the lower part to substantially the center,
Further, the hooks (5l) and (5r) are arranged opposite to each other in the approximate center of the reinforcing member (46) ,
The hooks (5l) and (5r) are fixedly attached to the vertical struts (40l) and (40r), and the base end side member (50) is detachably attached to the base end side member (50). It is composed of a hook member (51) that is hooked on the base material (2),
The base end member (50) is formed in an arcuate shape, and the curved piece (50a) along the outer periphery of the vertical struts (40l), (40r) is opposed to the curved piece (50a) extending obliquely. A pair of front and rear clamping pieces (50b) and (50c)
An inclined connecting portion (51b) in which the hook member (51) is held between the holding pieces (50b) and (50c), and a horizontal hook piece (51a) connected to the connecting portion (51b). And
A safety handrail characterized in that the connecting portion (51b) of the left hook (5l) is set longer than the connecting portion (51b) of the right hook (5r) .

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