JP3904873B2 - Handrail post and temporary handrail - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a temporary handrail for ensuring the safety of an operator during civil engineering work or construction work.
[0002]
[Prior art]
In civil engineering works such as underpasses and construction works for building middle-rise or high-rise buildings, workers should be placed on the side edges of temporary scaffoldings, temporary passages, building floors, and around slab openings in buildings. Temporary handrails are provided for safety and to prevent the material from falling.
[0003]
For example, as shown in Japanese Patent Laid-Open No. 8-151784, one end of each telescopic handrail pipe is fixed up and down as a temporary handrail provided around the floor outer periphery of the building or around the slab opening. Some have a handrail post with a pipe and a handrail post without a pipe to which a hook engaged with the other end of the handrail pipe is attached up and down. This temporary handrail is attached to a mounting hole formed at a predetermined interval on a floor of a building as a base, with a handrail strut with a pipe and a handrail strut without a pipe mounted next to each other. The handrail pipe is extended and contracted according to the interval between the support pillars, and the handrail pipe is extended between both handrail support pillars.
[0004]
[Problems to be solved by the invention]
In order to attach such a temporary handrail to the construction site, the members constituting the handrail support column are transported to the construction site by a truck or the like and assembled there, so that the temporary handrail member can be disassembled so that it can be easily transported. It is preferable to be able to do so. In the temporary handrail described above, the handrail pipe and the handrail support are integrally attached and are L-shaped as a whole. Therefore, when the handrail support is transported to the construction site, it is not easy to handle.
[0005]
When using two types of handrail struts constituting a temporary handrail as a pair of handrail struts with pipes and handrail struts without pipes, it is necessary to prepare both handrail struts in a predetermined number. Management is important.
[0006]
On the other hand, when the handrail pipe and the handrail support are separated from each other and are assembled at the construction site, it is important for the rapid progress of the construction that the assembly does not take time.
[0007]
An object of the present invention is to allow a temporary handrail to be assembled and disassembled in a short time at a construction site.
[0008]
[Means for Solving the Problems]
The handrail column of the present invention is inserted into the large-diameter frame piece provided with the upper horizontal portion, the lower horizontal portion, and the vertical portion connecting them, and the upper horizontal portion and the lower horizontal portion inserted into the upper horizontal portion. A handrail strut that supports a quadrilateral handrail pipe frame that is detachably attached to a base of a construction site, and has a small-diameter frame piece that includes a lower horizontal portion and a vertical portion that connects these , a post body joint portion is provided at a lower end portion which is fastened to the base, having a clamping piece rotatable about a Rutotomoni pin provided on said strut body, the lower horizontal and the upper horizontal portion A fixing member that fixes one of the parts to the column main body, and a column member that is slidably attached to the column main body, and one of the upper horizontal unit and the lower horizontal unit is supported by the fixing member. After that, the upper horizontal And having a an engaging hook for engaging the other one of the lower horizontal section.
[0009]
The handrail support column according to the present invention is characterized in that a plurality of engagement surfaces having different curvatures are formed on the engagement hook.
[0010]
The temporary handrail of the present invention is a temporary handrail that is detachably attached to a base of a construction site , and includes a large-diameter frame piece provided with an upper horizontal portion, a lower horizontal portion, and a vertical portion connecting them, and the upper side A quadrilateral handrail pipe frame having a small-diameter frame piece having an upper horizontal part inserted into a horizontal part, a lower horizontal part inserted into the lower horizontal part, and a vertical part connecting them, and the base a post body joint portion is provided at a lower end portion which is fastened to, a clamp piece rotatable about a Rutotomoni pin provided on said strut body, either to the upper horizontal portion of the lower horizontal portion A fixing member for fixing one of the columns to the column main body, and a column member that is slidably mounted in the vertical direction, and one of the upper horizontal portion and the lower horizontal portion is supported by the fixing member; The upper horizontal part and front And having an engaging hook for engaging the other one of the lower horizontal portion.
[0011]
The temporary handrail according to the present invention includes a large-diameter frame piece having a large-diameter upper horizontal portion and a lower horizontal portion, and a small-diameter frame piece having a small-diameter upper horizontal portion and a lower horizontal portion, respectively. A 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.
[0012]
The temporary handrail of the present invention is characterized in that an engagement surface having a large curvature with which the large-diameter frame piece is engaged and an engagement surface having a small curvature with which the small-diameter frame piece is engaged are formed on the engagement hook. And
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0014]
FIG. 1 is a perspective view showing a handrail column and a temporary handrail according to an embodiment of the present invention. The temporary handrail of the present invention is formed by a substantially quadrangular handrail pipe frame 10 and two handrail struts 20 that are detachably attached to the base B and span the handrail pipe frame 10. A pair of temporary handrails are formed by 10 and the two handrail support columns 20. When the temporary handrail is attached to the temporary passage laid at the construction site, an arbitrary number of temporary handrails are attached to the temporary passage. Similarly, when a temporary handrail is attached to the periphery of the floor of the building, the periphery of the slab opening, or the like, an arbitrary number of temporary handrails are attached corresponding to the respective sizes.
[0015]
FIG. 2 is an enlarged front view showing 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 parallel to each other. The upper horizontal portion 13a, the lower horizontal portion 14a, and the vertical portion 15a connecting these at the ends, are formed by bending a round pipe. Similarly, the small-diameter frame piece 12 has an upper horizontal portion 13b and a lower horizontal portion 14b that are parallel to each other, and a vertical portion 15b that connects these at the ends, and is formed by bending a round pipe. .
[0016]
As the large-diameter frame piece 11, for example, a metal round bar having an outer 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 and the thickness is 1.9. Metal round bars of about mm are 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 parts 13 and 14 and the vertical parts 15a at both ends can be inserted. The handrail pipe frame 10 which is composed of 15b and has a substantially quadrangular loop shape as a whole is assembled. Moreover, the full length of the handrail pipe frame 10 can be changed by sliding each horizontal part.
[0017]
2A shows a state where the large-diameter frame piece 11 and the small-diameter frame piece 12 are separated, and FIG. 2B shows an assembled state. The length of the horizontal portion of each of the illustrated frame pieces 11 and 12 is about 2000 mm. As shown in FIG. 2B, the handrail pipe frame 10 is obtained by sliding the two frame pieces on the respective horizontal portions. By extending and contracting, the length of the handrail pipe frame 10 can be changed in a range from a maximum of 3600 mm to a minimum of 2200 mm in accordance with the dimension to overlap the horizontal portion.
[0018]
As the handrail pipe frame 10 of another size, it is possible to prepare a frame having a horizontal dimension of, for example, about 1150 mm for each frame piece 11, 12. In that case, the length of the handrail pipe frame 10 can be prepared. The length can be taken from a maximum of 1900mm to a minimum of 1350mm. Thus, by preparing a plurality of types of sizes of the handrail pipe frame 10, those of any size can be used according to the construction site. It goes without saying that the length dimensions of these frame pieces and the outer diameter and thickness of the round bars constituting the frame pieces 11 and 12 can be set to arbitrary values.
[0019]
FIG. 3 is an enlarged front view showing the handrail support column 20. The handrail support column 20 has a column main body 21 made of a round pipe, and a joint member 22 fastened to the base B is provided at the lower end portion thereof. A clamper 23 as a fixing member for fixing the upper horizontal portion 13 of the handrail pipe frame 10 is provided at the upper end portion.
[0020]
The clamper 23 has a substantially semicircular fixed clamp piece 24 fixed to the column main body 21, and a substantially semicircular movable clamp piece 26 rotatably attached to the clamp piece 24 by a pin 25. ing. 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. The outer peripheral surface of the nut member 28 has a spherical shape, and even if the operator's body contacts the nut member 28, the operator is safe without being injured.
[0021]
An upper stopper 31 and a lower stopper 32 are fixed to the center portion of the column main body 21, and an engagement hook 33 is mounted between the stoppers 31 and 32 so as to be slidable in the vertical direction. Yes. Each of the stoppers 31 and 32 is formed by an annular member, and the stopper is formed by welding the annular member to a predetermined position of the column main body 21.
[0022]
The engagement hook 33 has a cylindrical tube 34 and a hook 35 provided on the cylindrical tube 34, and a lower horizontal portion of the handrail pipe frame 10 is formed in a recess 36 formed by the hook 35 and the tube 34. 14 is engaged. In order to engage the lower horizontal portion 14, the engagement hook 33 is lifted from the state where the upper horizontal portion 13 is inserted into the clamper 23 as described above to the lower stopper 32. Move downwards. As a result, the lower horizontal portion 14 is engaged in the recess 36 of the engagement hook 33, and the handrail pipe frame 10 can be easily attached to the handrail column 20 by the engagement operation and the screwing operation of the clamper 23. Can be attached. Note that a screw member may be attached to the cylindrical body 34 so that the cylindrical body 34 is fastened to the column main body 21 at a predetermined position.
[0023]
In order to assemble a pair of temporary handrails, a pair of handrail pipe frames 10 and two handrail struts 20 are used. First, 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 with the handrail column 20 attached to the base B at a predetermined interval. After the hook 33 is engaged, the assembly of the temporary handrail is completed by tightening the nut member 28 of the clamper 23.
[0024]
The lower horizontal portion 14 entering the recess 36 of the engagement 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 backlash at any horizontal portion, the hook portion 35 corresponds to the outer diameter of the lower horizontal portion 13b with a small diameter on the root side. An engagement surface 37 having the curvature described above is formed, and an engagement surface 38 having a curvature corresponding to the outer diameter of the large-diameter lower horizontal portion 13a is formed on the distal end side. Therefore, even if the lower horizontal portion of any outer diameter enters the recess 36, the handrail pipe frame 10 can be fixed by the engagement hook 33 without any backlash. Even when the handrail pipe frame 10 is disassembled from the handrail column 20, the engagement hook 33 can be removed from the lower horizontal portion by moving the engagement hook 33 upward.
[0025]
4 is a cross-sectional view showing the joint member 22 provided at the lower end portion of the handrail column 20, and FIG. 5 is a bottom view as seen from the direction of arrow A in FIG.
[0026]
A cylindrical member 29 having the same outer diameter as that of the column main body 21 is fixed to the lower end portion of the column main body 21 by means such as welding. The cylindrical member 29 is connected to the upper part of the arc and both ends thereof. A half cylinder 41, 42 having a straight portion and a U-shaped cross section is incorporated, and the tip of a screw rod 43 that is rotatably attached to the handrail column 20 is one half cylinder 41. A threaded rod 43 is screwed to a nut member 44 provided on the other half cylinder 42. Therefore, by rotating the screw rod member 43 using the head 45 of the screw rod member 43, the two half cylinders 41 and 42 can be moved in the radial direction.
[0027]
As a result, the threaded rod 43 is rotated in a state in which the portions of the half cylinders 41 and 42 are inserted into an attachment hole formed in the base B or a sheath tube fixed to the base B. Thus, the handrail support 20 can be fastened to the base B.
[0028]
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, an engagement hook 33 is slidably attached to the upper end portion of the strut body 21 in the vertical direction. A clamper 23 is attached to an intermediate portion of the column main 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. The other structure is shown in FIG. This is the same as the temporary handrail shown in FIG.
[0029]
FIG. 7 is a perspective view showing a handrail column and a temporary handrail according to still another embodiment of the present invention. In this case, the fixing member 23 has substantially the same shape as the clamp piece 24 on the fixed side of the clamper described above. It is formed by the fixed piece 24a which consists of. In this case, the upper horizontal portion 13 can be fixed to the column main body 21 by engaging the upper horizontal portion 13 of the handrail pipe frame 10 with a substantially semicircular recess formed in the fixing piece 24a. Thus, as described above, as the fixing member 23, the handrail pipe frame 10 may be screwed by using the clamp pieces on the fixed side and the movable side, as shown in FIG. You may make it fix together.
[0030]
In FIG. 7, members that are the same as those shown in FIG. 3 are given the same reference numerals. The fixing member 23 having the shape shown in FIG. 7 may be used for the handrail column 20 of the type shown in FIG.
[0031]
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, the large-diameter frame piece 11 and the small-diameter frame piece 12 constituting the handrail pipe frame 10 are both made of a hollow round pipe material, but may be formed by a hollow square pipe. You may make it form with a solid bar. Each frame piece 11 and 12 is formed by bending a bar, but the horizontal part and the vertical part may be formed by separate members, and each may be formed by welding. Furthermore, the handrail pipe frame 10 may be formed of a quadrangular frame that does not expand and contract. The handrail pipe frame may have an intermediate horizontal portion in addition to the upper and lower horizontal portions.
[0032]
【The invention's effect】
According to the handrail post of the present invention, it can be transported to the construction site in a state separated from the handrail pipe frame, and the handrail pipe frame can be supported by using the same kind of handrail post. According to the temporary handrail of the present invention, the handrail pipe frame and the handrail post can be assembled at the construction site, so that each can be easily transported. Since the handrail pipe frame is composed of a large diameter frame piece and a small diameter frame piece, the length dimension of the handrail pipe frame can be adjusted to an arbitrary length. The handrail pipe frame can be attached to the handrail support column by simply hooking the upper horizontal portion or the lower horizontal portion to the fixing member and engaging the lower horizontal portion or the upper horizontal portion with the engagement hook. A frame can be attached to the column. Moreover, when engaging the engagement hook with the lower horizontal portion or the upper horizontal portion, it is only necessary to slide the engagement hook in the vertical direction, and the handrail pipe frame can be quickly attached.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a handrail 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 post.
FIG. 4 is a cross-sectional view showing a joint member provided at a lower end portion of a handrail post.
FIG. 5 is a bottom view seen from the direction of arrow A in FIG. 4;
FIG. 6 is a perspective view showing a handrail column and a temporary handrail according to another embodiment of the present invention.
FIG. 7 is a perspective view showing a handrail column and a temporary handrail according to another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Handrail pipe frame 11 Large diameter frame piece 12 Small diameter frame pieces 13, 13a, 13b Upper horizontal portion 14, 14a, 14b Lower horizontal portion 15a, 15b Vertical portion 20 Handrail strut 21 Strut body 22 Joint member 23 Clamper (fixing member)
24 Clamping piece 24a Fixing piece 25 Pin 26 Clamping piece 27 Screw rod 28 Nut member 31 Upper stopper 32 Lower stopper 33 Engaging hook 34 Cylinder 35 Hook 36 Recess 37, 38 Engaging surface 41, 42 Half cylinder 43 Screw bar 44 Nut member 45 Head B Base

Claims (4)

A large-diameter frame piece comprising an upper horizontal part, a lower horizontal part and a vertical part connecting them, an upper horizontal part inserted into the upper horizontal part, a lower horizontal part inserted into the lower horizontal part, and these A handrail strut that supports a quadrilateral handrail pipe frame that is detachably attached to a base of a construction site, and a small-diameter frame piece having a vertical portion that connects
A column main body provided with a joint portion fastened to the base at the lower end,
A fixing member said about the Rutotomoni pin provided on the strut body has a clamping piece rotatably fixing the one of the said lower horizontal portion and the upper horizontal portion to said strut body,
The upper horizontal portion and the lower horizontal portion are moved downward by being mounted on the column body so that the upper horizontal portion and the lower horizontal portion are supported by the fixing member. The handrail support | pillar characterized by having an engagement hook engaged with either one of these . The handrail support column according to claim 1, wherein an engagement surface having a large curvature with which the large-diameter frame piece is engaged and an engagement surface having a small curvature with which the small-diameter frame piece is engaged are formed on the engagement hook. Handrail support characterized by. A temporary handrail that is detachably attached to the base of the construction site,
A large-diameter frame piece comprising an upper horizontal part, a lower horizontal part and a vertical part connecting them, an upper horizontal part inserted into the upper horizontal part, a lower horizontal part inserted into the lower horizontal part, and these A quadrilateral handrail pipe frame having a small-diameter frame piece with a vertical portion connecting
A column main body provided with a joint portion fastened to the base at the lower end,
A fixing member said about the Rutotomoni pin provided on the strut body has a clamping piece rotatably fixing the one of the said lower horizontal portion and the upper horizontal portion to said strut body,
The upper horizontal portion and the lower horizontal portion are moved downward by being mounted on the column body so that the upper horizontal portion and the lower horizontal portion are supported by the fixing member. A temporary handrail characterized by having an engagement hook that engages either one of the above .   4. The temporary handrail according to claim 3, wherein an engagement surface having a large curvature with which the large-diameter frame piece is engaged and an engagement surface having a small curvature with which the small-diameter frame piece is engaged are formed on the engagement hook. Temporary handrail characterized by.

Images