JP4091587B2 - Safety handrail - Google Patents

Description

  In the construction work site, the scaffolding frame composed of a pair of left and right vertical members and a horizontal member connecting the upper ends of both vertical members is opposed to each other, and a scaffold plate is bridged between the horizontal members of both building frames. The present invention relates to a safety handrail to be attached as a preceding handrail of a newly installed upper stage scaffold at the end of the scaffold on the wife side when assembling the scaffold to be assembled.

  In the assembly of scaffolds, safety handrails installed on the girder side of the scaffolding, that is, on the side of the scaffolding along the longitudinal direction of the scaffolding plate, as the leading handrail of the upper stage side scaffolding plate have been conventionally known, but the wife side of the scaffolding At the end, a safety handrail attached as a leading handrail for the newly installed upper stage scaffolding plate has not yet been adopted. Conventionally, the end of the scaffolding side had been used to tie bar materials horizontally on both vertical members of the scaffolding frame and tied them up with iron wires, etc. Met.

  The present invention is a safety handrail that is attached as a preceding handrail of the upper stage side scaffold at the end of the foot of the scaffold, and an object thereof is to provide a structurally sturdy safety handrail that can be easily and easily attached in a short time. .

In the invention according to claim 1, the scaffolding frame 7 composed of a pair of left and right vertical members 8, 8 and a horizontal member 9 connecting the upper ends of both vertical members 8, 8 is opposed to each other. A safety handrail attached as a preceding handrail of the upper stage scaffolding to the end of the scaffolding side when assembling the scaffolding by assembling the scaffolding plate 17 between the cross members 9, 9. A pair of left and right vertical rails 2, 2 arranged opposite to each other at an interval narrower than the interval between the members 8, 8, a horizontal beam 3 connecting the upper ends of both vertical beams 2, 2, and both vertical beams 2
, 2 has a handrail main body 6 composed of a middle rail 4, and the vertical rails 2, 2 of the handrail main body 6 are arranged at intermediate required portions thereof, and the handrail main body 6 is used as a cross member 9 for the scaffolding frame 7. A hook 11 that can be hooked in an inclined manner from the outside of the scaffold and that can turn the handrail main body 6 from the tilted state to the upright state in this hooked state is fixed, and the lower ends of both vertical rails 2 and 2 The bracket 10 is provided with a fixing bracket 12 that can be engaged and fixed to both vertical members 8 and 8 of the scaffolding building frame 7 by rotating the handrail main body 6 from the inclined state to the upright state. Is a safety handrail that is attached to both vertical bars with skirting boards that prevent tools, etc., from falling from the end of the scaffolding.

  According to a second aspect of the present invention, in the safety handrail according to the first aspect, the fixing bracket 12 includes a U-shaped frame piece 13 and a vertical member 8 of the scaffold building frame 7 engaged with the U-shaped frame piece 13. It is characterized by comprising a locking screw 15 that is in pressure contact.

According to a third aspect of the present invention, in the safety handrail according to the first or second aspect, the handrail main body 6 is provided with a reinforcing bar 18 that connects the lower ends of the vertical bars 2 and 2.

According to the safety handrail according to claim 1, the upper ends of the pair of left and right vertical bars 2, 2 and the vertical bars 2, 2 that are opposed to each other at a distance narrower than the distance between the vertical members 8, 8 of the scaffolding frame 7. has a handrail body 6 made Chu桟4 connecting the middle portion of the lateral beam 3 and Ryotate桟2,2 connecting the parts, the Ryotate桟2,2 handrail body 6 to an intermediate predetermined portions, handrail body 6 can be hooked to the cross member 9 of the scaffolding frame 7 in an inclined manner from the outside of the scaffold, and the handrail body 6 can be rotated from the tilted state to the upright state in this hooked state. firmly adhered, by the lower end of the Ryotate桟2,2 pivoting upright the handrail main body 6 in the inclined state, Kakarihama fixable secured to both longitudinal members 8, 8 of the scaffold Kenwaku 7 The bracket 12 is provided, and the operator lifts the safety handrail 1 with both hands inside the scaffold, and the hook 11 is attached to the cross member 9 of the scaffolding frame 7. After hanging from the outside of the field and keeping the load on the cross member 9 and turning the handrail main body 6 downward with the hook 11 as a fulcrum, the fixing bracket 12 is fixed vertically to the scaffolding frame 7. By engaging with the material 8 from the outside, the operator can easily and safely attach the safety handrail 1 alone from the inside of the scaffold. In addition, the safety handrail 1 is structurally robust and can be stably mounted, has a small number of members, and has a simple structure. Therefore, the safety handrail 1 can be easily manufactured and provided at a very low cost.

  Moreover, since the baseboard 5 is attached to the handrail main body 6 over the vertical bars 2 and 2 above the hook 11 attachment position, it is possible to prevent the tool or the like from dropping from the end of the scaffolding plate 17 on the side of the wife. be able to.

  According to the second aspect of the present invention, the fixing bracket 12 is composed of the U-shaped frame piece 13 and the lock screw 15 that is engaged with the fixing frame 12 and press-contacts the vertical member 8 of the scaffolding frame 7. Since the structure of the fixing metal 12 is very simple and easy to manufacture, the cost can be reduced.

  As described in claim 3, by providing the handrail main body 6 with the reinforcing bars 18 that connect the lower ends of the vertical bars 2 and 2, the handrail main body 6 has a more robust and stable structure, and the durability is improved. .

  1 (a) is a front view of the safety handrail 1 according to the present invention, (b) is a plan view, (c) is a side view, and FIG. 2 (a) is an arrow a in FIG. (B) is an enlarged plan view of the part, (c) is an enlarged rear view of the part, (d) is a left side view of (a), and (a) of FIG. 1 is an enlarged front view of the part indicated by the arrow b in FIG. 1A, FIG. 4B is an enlarged plan view of the same part, FIG. 4A is a front view showing the whole skirting board 5, ) Is a plan view thereof. 5-9 is explanatory drawing explaining the attachment method of the safety handrail 1. FIG. As shown in FIG. 5, the scaffolding frame 7 includes a pair of left and right vertical members 8, 8, a horizontal member 9 connecting the upper ends of the vertical members 8, 8, and between the vertical member 8 and the horizontal member 9. The reinforcing material 10 is formed in a gate shape. As shown in FIG. 1, the safety handrail 1 includes a pair of left and right vertical beams 2, 2 that are opposed to each other at a distance narrower than the distance between both vertical members of the scaffolding frame 7, and upper ends of the vertical beams 2, 2. A handrail body comprising a horizontal beam 3 connecting the vertical beam 2, a middle beam 4 connecting the middle portions of the vertical beams 2, 2 at a position close to the horizontal beam 3, and a reinforcing beam 18 connecting the lower ends of the vertical beams 2, 2 6.

  Both vertical bars 2 and 2 of the handrail main body 6 have intermediate required portions thereof, that is, positions closer to the lower side than the center position of the length of the vertical rail 2, both ends of the horizontal beam 3 of the scaffolding frame 7 from the outside of the scaffolding. A hook 11 is provided to be hooked to the vertical rails 2 and 2, and fixing brackets 12 fixed to the lower end portions of the vertical bars 2 and 2 by being engaged with the vertical members 8 and 8 of the building frame 7 from the outside of the scaffold. And a tool, a material, or the like falls from the end of the scaffolding plate 17 (see FIGS. 7 to 9) spanned between the scaffolding frames 7 and 7 above the hook 11 attachment position. A skirting board 5 for preventing this is attached across the vertical rails 2 and 2 of the handrail body 6.

  The hook 11 is an L-shaped hardware, and is attached to the vertical rail 2 of the handrail body 6 by welding. As shown in FIGS. 2A to 2D, the fixing bracket 12 includes a U-shaped frame piece 13 attached to the vertical rail 2 of the handrail body 6 via the mounting member 14, and a U-shaped frame piece. 13 and a lock screw 15 which presses the vertical member 8 of the scaffold building frame 7 engaged with the U-shaped frame piece 13 as shown in FIG. 2 (b). Become. The attachment member 14 is attached to the vertical rail 2 of the handrail body 6 by welding, and the U-shaped frame piece 13 is attached to the attachment member 14 by welding.

  As shown in FIGS. 3 (a) and 3 (b) and FIGS. 4 (a) and 4 (b), the skirting board 5 is bent at an upper end to a right angle to form a bent edge 5a. Notches 5b and 5b are formed by notching both ends of the bent edge 5a. When installing the skirting board 5, as shown in FIG. 3 (a), the skirting board 5 is placed on the hooks 11 and 11 attached to the two vertical rails 2 and 2 of the handrail body 6, and the upper end In the state where the bent edge portion 5a is inserted between the vertical bars 2 and 2 and the notches 5b and 5b are engaged with the vertical bars 2 and 2, the skirting board 5 is connected to the vertical bars 2 and 2, respectively. It is attached by welding. By attaching in this way, the skirting board 5 can be attached to the vertical rails 2 and 2 of the handrail body 6 in a good and stable state. In addition, since the bent edge portion 5a is formed by bending the upper end portion at a right angle to the outside, there is no risk of injury to the limb due to swinging to the upper end of the skirting board 5 during use.

  The method of attaching the safety handrail 1 configured as described above will be described. First, as shown in FIG. 5, a pair of scaffolding frames 7, 7 are opposed to each other on the ground, and both scaffolding frames 7, 7 are installed. While assembling the brace 16 on the opposing vertical members 8 and 8 of 7, the first-stage scaffolding is assembled, and the safety handrail 1 is attached to the scaffolding frame 7 that is the end of the first-stage scaffolding on the wife side .

  When the safety handrail 1 is attached, as shown in FIG. 6, an operator inside the scaffold lifts the safety handrail 1 with both hands, and hooks 11 and 11 are attached to the cross member 9 of the scaffolding frame 7 from the outside. It is set in a state in which a load is deposited on the cross member 9 by hanging. At this time, one hand of the operator holds the reinforcing bar 5 of the handrail body 6 as shown in the figure. After the hook 11 is hooked on the cross member 9 of the scaffolding frame 7 in this way, the handrail main body 6 is brought into an upright state while rotating downward in the direction of the arrow in FIG. 2 are engaged with the vertical members 8 and 8 of the scaffolding frame 7 from the outside, as shown in FIG. The lock screw 15 is turned from the state as shown in FIG. 3 and the vertical member 8 is pressed and fixed, whereby the safety handrail 1 is attached to the scaffold building frame 7 which is the end of the first stage scaffold. This attachment state is shown in FIGS.

Thus, when the safety handrail 1 is attached to the scaffolding frame 7 which is the end of the first-stage scaffolding, the scaffolding plate 17 is placed between the opposing cross members 9 and 9 of the opposing scaffolding frames 7 and 7. Cross over. Fig. 7 (b)
In FIG. 2, the spanned scaffolding plate 17 is indicated by a virtual line. As can be seen from (a) and (b) of FIG. 7, in the state where the safety handrail 1 is attached to the first stage scaffolding frame 7, about 2/3 of the height of the safety handrail 1 is the scaffold work floor level ( It projects upward from the upper surface position of the scaffold plate 17, the remaining 1/3 is located below the scaffold work floor level, and the base plate 5 has a lower end position substantially at the scaffold work floor level.

  An operator rides on the scaffolding plate 17 spanned as described above, and the second-stage scaffolding frame 7 is added to the first-stage scaffolding framework 7, resulting in a state as shown in FIG. . When the second stage scaffolding frame 7 is added, the safety handrail 1 is attached to the end of the first stage scaffolding as shown in FIG. The safety handrail 1 can add the work safely.

  Thereafter, the above-described operation described with reference to FIGS. 5 to 8 is repeatedly performed, and the safety handrail 1 is attached as the preceding handrail of the newly installed upper stage side scaffold at the end of the foot of the scaffold. FIG. 9 shows a state in which the safety handrail 1 is attached as the preceding handrail of the upper stage side scaffold newly established as described above. In this case, it is preferable that the safety handrail 1 is directly attached to the scaffolding frame 7 of each stage, but after serving as a preceding handrail, the safety handrail 1 is removed and the next upper stage side scaffolding is removed. You may make it attach as a preceding handrail. However, if attached as it is, as can be seen from FIG. 9, the lower-stage safety handrail 1 has a function to prevent dropping from the opening at the end of the scaffolding wife side (opening handrail).

  The above description has only described the mounting method of the safety handrail 1 as the leading handrail of the upper stage scaffolding newly established at the end of the scaffold on the wives side. The safety handrail installed on the side surface side is attached by a conventionally known method although illustration is omitted.

  The safety handrail 1 of the present invention described above includes a pair of left and right vertical beams 2 and 2 and upper end portions of both vertical beams 2 and 2 that are arranged at a narrower interval than the interval between both vertical members 8 and 8 of a scaffold building frame 7. The main rail 6 is composed of a horizontal rail 3 connecting the vertical rails 2 and an intermediate rail 4 connecting intermediate portions of the vertical rails 2, 2. 9. Hooks 11 are provided to be hooked at both ends, and fixing brackets 12 are provided at the lower ends of the two vertical beams 2, 2 so as to be engaged with and fixed to the vertical beams 2, 2 of the scaffolding frame 7. Thus, while the operator lifts the safety handrail 1 with both hands inside the scaffold, the hooks 11 and 11 are hooked on the lateral member 9 of the scaffolding frame 7 from the outside of the scaffold, and the lateral member 9 is loaded. After the handrail main body 6 is rotated downward with the hook 11 as a fulcrum, the U-shaped frame pieces 13 and 1 of the fixing brackets 12 and 12 are placed. Can be engaged with the vertical members 8, 8 of the building frame 7 for the scaffold from the outside, and the vertical member 8 can be fixed by turning the lock screw 15, so that the worker can easily and easily secure the safety handrail 1 alone from the inside of the scaffold. It can be installed safely and safely.

  And since the baseboard 5 is attached to the handrail main body 6 of this safety handrail 1 over both the vertical bars 2 and 2 above the hook 11 attachment position, tools, materials, etc. are used during the work. Can be prevented from falling from the end of the wife side, and work safety can be achieved. In addition, the safety handrail 1 is structurally robust and can be stably mounted, has a small number of members, and has a very simple structure. Therefore, the safety handrail 1 can be easily manufactured and provided at a very low cost.

  Further, in this embodiment, the fixing bracket 12 is composed of a U-shaped frame piece 13 and a lock screw 15 that presses the vertical member 8 of the scaffold building frame 7 engaged with the U-shaped frame piece 13. However, a commonly used U-shaped clamp, pipe clamp, or the like may be used as the fixing metal fitting. However, according to the fixing metal fitting 12 configured as in this embodiment, the structure is extremely simple and easy to manufacture, so the cost can be reduced.

  In this embodiment, since the reinforcing bar 18 that connects the lower ends of the vertical bars 2 and 2 of the handrail main body 6 is provided, the handrail main body 6 has a robust and stable structure, and the durability is improved.

(a) is a front view of one embodiment of a safety handrail according to the present invention, (b) is a plan view, and (c) is a side view. (a) is an enlarged front view of the part indicated by arrow (a) in FIG. 1, (b) is an enlarged plan view of the part, (c) is an enlarged rear view of the part, and (d) is (a) FIG. (a) is the enlarged front view of the part shown by the arrow b of (a) of FIG. 1, (b) is the enlarged plan view of the part. (a) is a front view showing the entire skirting board, and (b) is a plan view thereof. It is a perspective view which shows the state which attached the safety handrail to the building frame for 1st steps | paragraphs. It is a perspective view explaining the point which hooks the hook of a safety handrail on the cross member of the building frame for scaffolds. (a) is the front view which shows the state which attached the safety handrail to the first-stage scaffolding frame, (b) is a side view. It is a perspective view which shows the state which added the building frame for 2nd steps to the building frame for 1st steps. The front view which shows the state which attached the safety handrail as a preceding handrail of the upper stage scaffold newly established one by one, (b) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Safety handrail 2 Vertical beam 3 Horizontal beam 4 Middle beam 5 Skirting board 6 Handrail main body 7 Footing frame 8 Vertical material 9 Horizontal material 11 Hook 12 Fixing bracket 13 U-shaped frame piece 15 Lock screw 18 Reinforcement beam

Claims (3)

When assembling a scaffold that is assembled by placing a scaffolding plate between the transverse members of both building frames with the scaffolding frame consisting of a pair of left and right vertical members and a horizontal member connecting the upper ends of both vertical members facing each other, A safety handrail attached to the end of the wife side as a preceding handrail of the upper stage side scaffold,
A handrail body consisting of a pair of left and right vertical bars arranged opposite to each other at a distance narrower than the distance between the vertical members of the scaffolding frame, a horizontal beam that connects the upper ends of the vertical beams, and a middle rail that connects the middle part of both vertical beams. Have
It is possible to hook the railing main body to the cross section of the vertical frame of the handrail main body, and to the cross member of the scaffolding frame from the outside of the scaffolding, and in this state the handrail main body is inclined A hook that can be turned from the upright state to the upright state is fixed, and the lower end of each vertical rail can be fixed to the vertical member of the scaffolding frame by rotating the handrail body from the inclined state to the upright state. This is a safety handrail that is provided with a fixed base metal and a baseboard that prevents a tool or the like from dropping from the end of the scaffold on the upper side of the hook mounting position.   2. The safety handrail according to claim 1, wherein the fixing bracket includes a U-shaped frame piece and a lock screw that presses a vertical member engaged with the U-shaped frame piece.   The safety handrail according to claim 1 or 2, wherein the handrail main body is provided with a reinforcing bar that connects the lower ends of both vertical bars.

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