JP2003105966A - Handrail post and temporary handrail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assemble and disassemble a temporary handrail in a short time at a field of construction work. SOLUTION: The temporary handrail comprises a handrail pipe frame 10 and a plurality of handrail posts 20 for supporting the handrail pipe frame 10. The handrail pipe frame 10 has an upper side horizontal part 13, a lower side horizontal part 14 and vertical parts 15a, 15b for connecting them. The handrail post 20 has a post body 21 provided at its lower end part with a joint part fastened to a base B and provided at its upper end part with a clamper 23 for fixing the upper side horizontal part 13. The post body 21 is mounted with an engaging hook 33 in a vertically slidable manner, and an engaging face engaged with the lower side horizontal part 14 is formed at the engaging hook 33. The handrail pipe frame 10 is formed of a large diameter frame piece 11 having the large diameter upper side horizontal part and lower side horizontal part, and a small diameter frame piece 12 having the small diameter upper side horizontal part and lower side horizontal part, and the total length dimension is adjustable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary handrail for ensuring the safety of workers in civil engineering work and construction work.

[0002]

2. Description of the Related Art In civil engineering works such as underpasses and building works for building middle-rise or high-rise buildings, temporary scaffolds, side edges of temporary passages, floors of buildings, and surroundings of slab openings of buildings, etc. In addition, temporary handrails are provided for the safety of workers and the prevention of falling of materials.

As a temporary handrail provided around the outer periphery of the floor of a building or around the opening of a slab, for example, Japanese Patent Laid-Open No. 8-
As shown in Japanese Patent No. 151784, a handrail pillar with a pipe in which one end of an extendable handrail pipe is fixed vertically and a handrail without a pipe in which a hook with which the other end of the handrail pipe engages are vertically attached. Some have a pillar.
This temporary handrail is constructed with a floor of a building as a base and mounting holes formed at predetermined intervals in the base to attach handrail stanchions with pipes and handrail stanchions without pipes side-by-side as a pair. The handrail pipes are expanded and contracted according to the space between the support columns so that the handrail pipes are hung between both the handrail support columns.

[0004]

In order to attach such a temporary handrail to a construction site, the members constituting the handrail post are transported by a truck or the like to the construction site and assembled there. It is preferable to disassemble the member so that it can be easily transported. Since the above-mentioned temporary handrail has the handrail pipe and the handrail post integrally attached and has an L shape as a whole, it is not easy to handle the handrail post when it is transported to the construction site.

When two types of handrail struts constituting a temporary handrail are used as a pair of a handrail stanchion with a pipe and a handrail stanchion without a pipe, it is necessary to prepare a predetermined number of both handrail stanchions. Yes, its management is important.

On the other hand, when the handrail pipe and the handrail support are used as separate members to assemble them at a construction site, it is important for quick progress of the construction that the assembly takes no time. .

An object of the present invention is to enable a temporary handrail to be assembled and disassembled in a short time at a construction site.

[0008]

The handrail support of the present invention is a handrail pipe frame that is detachably attached to a base of a construction site and has an upper horizontal portion, a lower horizontal portion, and a vertical portion connecting them. A handrail support for supporting, a support main body having a joint portion fastened to the base at a lower end, and a support main body provided on the support main body, and one of the upper horizontal part and the lower horizontal part A support member for fixing the support body to the support body; and an engaging hook that is vertically slidably mounted on the support body and that engages with the other of the upper horizontal portion and the lower horizontal portion. To do.

The handrail support of the present invention is characterized in that the engaging hook is formed with a plurality of engaging surfaces having different curvatures.

The temporary handrail of the present invention is a temporary handrail that is detachably mounted on a base of a construction site, and has a handrail pipe frame having an upper horizontal portion, a lower horizontal portion, and a vertical portion connecting them. A support main body having a lower end provided with a joint portion to be fastened to the base, and a fixing member provided on the support main body for fixing one of the upper horizontal portion and the lower horizontal portion to the support main body. And an engaging hook that is vertically slidably mounted on the pillar body and that engages with the other of the upper horizontal portion and the lower horizontal portion.

The temporary handrail of the present invention comprises a large-diameter frame piece having a large-diameter upper horizontal portion and a lower-diameter horizontal portion, and a small-diameter frame piece having a small-diameter upper horizontal portion and a small-diameter horizontal portion, respectively. The handrail pipe frame is formed, and the large-diameter frame piece and the small-diameter frame piece are slidably fitted in the upper horizontal portion and the lower horizontal portion, respectively.

In the temporary handrail of the present invention, an engaging surface with a large curvature for engaging the large-diameter frame piece and an engaging surface with a small curvature for engaging the small-diameter frame piece are formed on the engaging hook. It is characterized by

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing a handrail support pole and a temporary handrail according to an embodiment of the present invention. The temporary handrail of the present invention is formed of a substantially quadrilateral handrail pipe frame 10 and two handrail columns 20 which are detachably attached to the base B and on which the handrail pipe frame 10 is bridged. A pair of temporary handrails is formed by 10 and the two handrail support columns 20. When the temporary handrails are attached to the temporary passages laid on the construction site, an arbitrary number of temporary handrails are attached to the temporary passages. Similarly, when installing temporary handrails around the floor of the building or around the slab opening, an arbitrary number of temporary handrails are installed corresponding to each size.

FIG. 2 is an enlarged front view of the handrail pipe frame 10. The handrail pipe frame 10 has a large-diameter frame piece 11 and a small-diameter frame piece 12, and the large-diameter frame piece 11 is mutually connected. It has an upper horizontal portion 13a and a lower horizontal portion 14a that are parallel to each other, and a vertical portion 15a that connects these at their ends, and is formed by bending a round pipe. Similarly, the small-diameter frame piece 12
Is the upper horizontal portion 13b and the lower horizontal portion 1 which are parallel to each other.
4b and a vertical portion 15b connecting these at the ends,
It is formed by bending a round pipe.

The large-diameter frame piece 11 has, for example, an outer diameter of
A round bar made of metal with a diameter of 34 mm and a thickness of about 2.3 mm is used. As the small-diameter frame piece 12, for example, the outer diameter is 27.2 mm,
A metal round bar with a thickness of about 1.9 mm is used. Therefore, the opening-side end of the small-diameter frame piece 12 can be inserted into the opening-side end of the large-diameter frame piece 11, and by inserting, the upper and lower horizontal portions 13 and 14 and the vertical portions 15 at both ends.
The handrail pipe frame 10 which is made of a and 15b and has a substantially quadrangular loop shape as a whole is assembled. Moreover, by sliding the respective horizontal portions, the total length of the handrail pipe frame 10 can be changed.

FIG. 2A shows a large-diameter frame piece 11 and a small-diameter frame piece 12.
And (2) show the separated state, and FIG. 2 (B) shows the assembled state. The horizontal portion of each of the frame pieces 11 and 12 shown in the figure has a length of about 2000 mm. As shown in FIG. 2B, the handrail pipe frame 10 is made by sliding the two frame pieces at their respective horizontal portions. The length of the handrail pipe frame 10 can be maximized according to the size of the horizontal part when it is expanded or contracted.
It can vary from 3600mm to a minimum of 2200mm.

As for the handrail pipe frame 10 of other sizes,
The length of the horizontal portion of each of the frame pieces 11 and 12 can be prepared to be, for example, about 1150 mm. In that case, the length of the handrail pipe frame 10 can be set from a maximum of 1900 mm to a minimum of 13 mm.
It can be about 50 mm. In this way, by preparing a plurality of sizes of the handrail pipe frame 10, it is possible to use an arbitrary size according to the construction site. It goes without saying that the length dimension of these frame pieces and the outer diameter and thickness of the round bars forming the frame pieces 11 and 12 can be set to arbitrary values.

FIG. 3 is an enlarged front view showing the handrail support column 20. The handrail support column 20 is a column main body 21 made of a round pipe.
A joint member 22 fastened to the base B is provided at the lower end portion thereof, and a clamper 2 as a fixing member for fixing the upper horizontal portion 13 of the handrail pipe frame 10 at the upper end portion thereof.
3 is provided.

The clamper 23 has a substantially semi-circular fixed clamp piece 24 fixed to the column body 21, and a substantially semi-circular movable clamp piece 26 rotatably attached to the clamp piece 24 by a pin 25. have. A screw rod 27 is rotatably attached to the clamp piece 24, and a nut member 28 screwed to the screw rod 27 is brought into contact with the clamp piece 26. Therefore, with the clamp piece 26 open, the upper horizontal portion 13 of the handrail pipe frame 10 is brought into contact with the inner surface of the clamp piece 24, and the clamp piece 26 is fastened to the clamp piece 24 by the nut member 28. The upper horizontal portion 13 of the frame 10 can be fastened. Since the outer peripheral surface of the nut member 28 has a spherical shape, even if the body of the worker comes into contact with the nut member 28, the worker is safe without being injured.

An upper stopper 31 and a lower stopper 32 are fixed to the central portion of the column main body 21, and an engaging hook 33 is slidable vertically between the stoppers 31 and 32. It is installed. Each of the stoppers 31 and 32 is formed of an annular member, and the stopper is formed by welding the annular member to a predetermined position of the column main body 21.

The engaging hook 33 has a cylindrical body 34 and a hook portion 35 provided on the cylinder body 34.
The lower horizontal portion 14 of the handrail pipe frame 10 is adapted to engage with the recess 36 formed by the tubular body 34.
In order to engage the lower horizontal portion 14, the upper horizontal portion 13 is inserted into the clamper 23 as described above, and then the engaging hook 33 is raised to the lower stopper 32. Move downwards. As a result, the lower horizontal portion 14 is engaged in the concave portion 36 of the engaging hook 33, and the handrail pipe frame 10 is easily attached to the handrail support column 20 by the engaging operation and the screw tightening operation of the clamper 23. Can be installed. A screw member may be attached to the tubular body 34 to fasten the tubular body 34 to the column main body 21 at a predetermined position.

To assemble a pair of temporary handrails, one set of handrail pipe frame 10 and two handrail columns 20 are used. First, with the handrail support columns 20 attached to the base B at a predetermined interval, the upper horizontal portion 13 of the handrail pipe frame 10 is inserted into the clamper 23 and engaged with the lower horizontal portion 14. After engaging the hook 33, the nut member 28 of the clamper 23 is tightened to complete the assembly of the temporary handrail.

The lower horizontal portion 14 that enters the recess 36 of the engaging hook 33 may be a large-diameter lower horizontal portion 13a or a small-diameter lower horizontal portion 13b. In order to engage the engagement hook 33 with the upper horizontal portion 13 without any rattling in any horizontal portion, the hooking portion 35 corresponds to the outer diameter of the lower horizontal portion 13b having a small diameter at the base side thereof. The engaging surface 37 having the above curvature is formed, and the engaging surface 38 having the curvature corresponding to the outer diameter of the large-diameter lower horizontal portion 13a is formed on the tip side. Therefore, even if any lower horizontal portion of the outer diameter enters the recess 36, the engaging hook 3 can be securely played without rattling.
The handrail pipe frame 10 can be fixed by 3.
Even when the handrail pipe frame 10 is disassembled from the handrail support 20, the engagement hook 33 can be removed from the lower horizontal portion by moving the engagement hook 33 upward.

FIG. 4 is a sectional view showing the joint member 22 provided at the lower end of the handrail support 20, and FIG. 5 is a bottom view seen from the direction of arrow A in FIG.

A cylindrical member 29 having the same outer diameter as that of the strut body is fixed to the lower end portion of the strut body 21 by means such as welding. Half-divided cylinders 41 and 42 having a U-shaped cross section having straight portions continuous at both ends are incorporated, and the tip of a screw rod 43 rotatably attached to the handrail support 20 is one half. The nut member 4 abutting on the inner peripheral surface of the tubular body 41 and provided on the other half-split tubular body 42.
A screw rod 43 is screwed to the screw 4. Therefore, by rotating the screw rod member 43 using the head portion 45 of the screw rod member 43, the two half-split cylinders 41, 42 can be moved in the radial direction.

As a result, the half-split cylinder 41 is attached to the mounting hole formed in the base B or the sheath pipe fixed to the base B.
The handrail support 20 can be fastened to the base B by rotating the screw rod 43 with the portion 42 inserted.

FIG. 6 is a perspective view showing a handrail strut and a temporary handrail according to another embodiment of the present invention. In this case, the engaging hook 33 slides vertically on the upper end of the strut body 21. It is freely mounted, and a clamper 23 is attached to the middle portion of the pillar body 21. Therefore, in this case, the upper horizontal portion 13 of the handrail pipe frame 10 is engaged with the engagement hook 33, and the lower horizontal portion 14 is fastened by the clamper 23. It is similar to the temporary handrail shown in.

FIG. 7 is a perspective view showing a handrail support column and a temporary handrail according to still another embodiment of the present invention. In this case, the fixing member 23 is almost the same as the clamp piece 24 on the fixed side of the clamper. Fixed piece 24a having the same shape
It is formed by. In this case, the handrail pipe frame 1
The upper horizontal part 13 can be fixed to the column main body 21 by engaging the upper horizontal part 13 of 0 with the substantially semicircular recess formed in the fixing piece 24a. As described above, as the fixing member 23, the handrail pipe frame 10 may be screwed by using the fixed side and the movable side clamp pieces, as described above. You may make it fixed and fix it.

In FIG. 7, members common to the members shown in FIG. 3 are designated by the same reference numerals. The fixing member 23 having the shape shown in FIG. 7 is replaced with the handrail support column 2 of the type shown in FIG.
It may be used for 0.

The present invention is not limited to the above-described embodiment, but various modifications can be made without departing from the scope of the invention. For example, both the large-diameter frame piece 11 and the small-diameter frame piece 12 that make up the handrail pipe frame 10 are made of hollow round pipe material, but they may be formed by hollow square pipes. It may be formed of a solid bar. Further, although each of the frame pieces 11 and 12 is formed by bending a bar material, it may be formed by forming the horizontal portion and the vertical portion by separate members and joining them by welding. well,
Further, the handrail pipe frame 10 may be formed by a quadrilateral frame that does not expand and contract. Further, the handrail pipe frame may have an intermediate horizontal portion in addition to the upper and lower horizontal portions.

[0032]

According to the handrail support of the present invention, the handrail support can be transported to the construction site in a state where it is separated from the handrail support, and moreover, the handrail support can be supported by using the same handrail support. You can According to the temporary handrail of the present invention,
Since the handrail pipe frame and the handrail support can be assembled at the construction site, they can be easily transported. Since the handrail pipe frame is composed of the large diameter frame piece and the small diameter frame piece, the length dimension of the handrail pipe frame can be adjusted to an arbitrary length. To attach the handrail pipe frame to the handrail support, the upper horizontal part or the lower horizontal part can be hooked on the fixing member, and the lower horizontal part or the upper horizontal part can be engaged with the engaging hook. The frame can be attached to the columns. Moreover, when the engaging hook is engaged with the lower horizontal portion or the upper horizontal portion, it is sufficient to slide the engaging hook in the vertical direction, and the mounting operation of the handrail pipe frame can be performed quickly.

[Brief description of drawings]

FIG. 1 is a perspective view showing a handrail support column and a temporary handrail according to an embodiment of the present invention.

FIG. 2A is a front view showing a state in which a large-diameter frame piece and a small-diameter frame piece are separated, and FIG. 2B is a front view showing a state in which a handrail pipe frame is formed by assembling.

FIG. 3 is an enlarged front view showing a handrail support.

FIG. 4 is a cross-sectional view showing a joint member provided at a lower end portion of a handrail support column.

FIG. 5 is a bottom view seen from the direction of arrow A in FIG.

FIG. 6 is a perspective view showing a handrail support column and a temporary handrail according to another embodiment of the present invention.

FIG. 7 is a perspective view showing a handrail support column and a temporary handrail according to another embodiment of the present invention.

[Explanation of symbols]

10 handrail pipe frame 11 Large-diameter frame piece 12 Small diameter frame piece 13, 13a, 13b Upper horizontal part 14, 14a, 14b Lower horizontal part 15a, 15b Vertical part 20 handrail support 21 prop body 22 Joint member 23 Clamper (fixing member) 24 clamp pieces 24a fixed piece 25 pin 26 Clamp pieces 27 screw rod material 28 Nut member 31 Upper stopper 32 Lower stopper 33 Engagement hook 34 cylinder 35 Hook 36 recess 37, 38 Engaging surface 41,42 half cylinder 43 screw rod 44 Nut member 45 heads B base

Claims (5)

[Claims] 1. A removably mounted base on a construction site,
A handrail post that supports a handrail pipe frame having an upper horizontal portion, a lower horizontal portion, and a vertical portion that connects the horizontal portion, and a main pillar body in which a joint portion fastened to the base is provided at a lower end portion, A fixing member that is provided on a pillar body and that fixes one of the upper horizontal portion and the lower horizontal portion to the pillar body, and is vertically slidably attached to the pillar body, and the upper horizontal portion and the A handrail support column having an engagement hook that engages with either of the other of the lower horizontal portions. 2. The handrail support column according to claim 1, wherein a plurality of engagement surfaces having different curvatures are formed on the engagement hook. 3. A temporary handrail detachably mounted on a base at a construction site, and a handrail pipe frame having an upper horizontal portion, a lower horizontal portion, and a vertical portion connecting these, and a base rail on the base. A column main body having a joint part to be fastened at a lower end, a fixing member provided on the column main body, and fixing any one of the upper horizontal part and the lower horizontal part to the column main body, the column main body A temporary handrail, which is slidably mounted in the vertical direction and has an engaging hook that engages with the other of the upper horizontal portion and the lower horizontal portion. 4. The temporary handrail according to claim 3, wherein each of the large-diameter frame pieces has a large-diameter upper horizontal portion and a lower-diameter horizontal portion, and a small-diameter portion each has a small-diameter upper horizontal portion and a lower horizontal portion. A temporary handrail, characterized in that the handrail pipe frame is formed by a frame piece, and the large-diameter frame piece and the small-diameter frame piece are slidably fitted in their respective upper horizontal portions and lower horizontal portions. 5. The temporary handrail according to claim 4, wherein the engagement surface with a large curvature that engages the large-diameter frame piece and the engagement surface with a small curvature that engages the small-diameter frame piece are engaged. Temporary handrail that is formed on the hook.