JP2847368B2 - Temporary handrails to prevent falls at openings in staircases, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION The present invention relates to a construction site such as a house or a building.
The present invention relates to a temporary handrail for preventing a worker from falling or falling down from a floor opening such as a staircase or a stairwell.

2. Description of the Related Art In a construction method of assembling a frame or a house in a building or a house, first, a work floor is installed on the assembled frame in work on the second floor or higher, and work is performed on this floor. Perform In this case, in the staircase or the stairwell, an opening is formed in the work floor, but conventionally, there was a risk that the worker would fall or fall from the opening. . Therefore, in order to prevent such accidents, methods such as closing the opening with a panel, setting up a safety net, standing up a pillar, and connecting with a plastic chain have been conventionally performed. I was

Problems to be Solved by the Invention However, in the above-described conventional danger prevention method, in the method of closing the opening, it is not possible to lift the luggage using the staircase or the like or to go up and down for entering and exiting people. However, there is a disadvantage in that the operation is hindered, and in the other methods, there is a disadvantage that the attachment and detachment operation is quite troublesome for the construction period. Therefore, in the related art, due to such a drawback, there have been cases where work is actually performed without taking safety measures.

That is, the present invention solves the above-mentioned conventional disadvantages,
An object of the present invention is to provide a temporary handrail for preventing falling down which can be easily attached and detached without closing an opening.

Means for Solving the Problems In order to achieve the above object, according to the present invention, at an opening of a work floor installed on a beam of a steel frame, the opening is detachably provided by using a hole for attaching a building member of the beam. A plate comprising a plurality of pillars provided and a handrail member detachably mounted between the pillars so as to surround the opening, and the pillars are provided at the lower end or in the vicinity of the lower end so as to project laterally. A projecting pin is provided on the lower surface of the beam for being inserted into the mounting hole from above. The beam pin is urged by a spring so as to always project outward from the side face, and At the time of insertion into the mounting hole, sliding of the inclined portion of the lock fitting and the inner peripheral surface of the mounting hole automatically pushes the spring against the spring to enable insertion of the beam pin. , Insertion complete After that, a lock fitting is provided to protrude to prevent the pin for the beam from coming off. Further, the pillar has a pin for the handrail member inserted into the pin insertion hole of the handrail member at its upper end or an intermediate portion in the vertical direction. Is projected, and the pin for this handrail member is
When the pin is inserted into the pin insertion hole, the pin is rotated along the direction of the pin to enable insertion of the pin for the handrail member. In this case, a rotatable lock plate is provided to prevent the pin for the handrail member from coming off.

By simply inserting the beam pin provided at the lower end of the column into the hole for mounting the structural member on the floor beam, the lock fitting engages with the mounting hole and automatically prevents it from coming off, and the column is fixed to the beam. And can be easily erected. Further, by inserting a pin for a handrail member provided at an upper end or an intermediate portion of the post into a pin insertion hole of the handrail member and rotating the lock plate to prevent the handrail member from coming off, the handrail member can be moved relative to the post. Can be installed easily and can be constructed in a short time.

Embodiment An embodiment of the present invention will be described. In FIG. 1, (1), (1)... Show floor beams constituting a frame of a steel frame assembled in advance. As shown in FIG. 2, these floor beams (1) (1) have their flanges (2) (2)
Are made of H-shaped steel arranged in the vertical direction, and holes (3) (3)... For attaching braces and other construction members are opened in the flange portions (2) and (2). (4)
Is a working floor installed on the floor beam (1), and (5)
Is an opening of the staircase surrounded by the work floor (4).

(6), (6)... Indicate support columns attached to the four corners of the opening (5). The strut (6) is formed of a hollow pipe as shown in FIG. 2, and a pair of upper and lower horizontal overhanging plates (7) (7) are attached to the outer periphery of the lower end thereof by welding or the like. It is fixed. Pins (9) and (9) are fixed to the lower surfaces of the overhanging plates (7) and (7) so as to protrude downward. Lock fittings (10) (10) urged to project outward by a spring are attached. These pins (9) and (9) are inserted into the holes (3) and (3) corresponding to the upper and lower flanges (2) and (2) of the beam (1). (9) When (9) is pushed in in this manner, the outer inclined portions of the lock fittings (10) and (10) automatically slide inward while sliding on the inner peripheral surfaces of the mounting holes (3) and (3). When the lock fittings (10) and (10) are pushed further in, the lock fittings (10) and (10) protrude outward again while passing through the hole (3), thereby preventing the lock fittings (10) and (10) from slipping upward. On the other hand, as shown in FIG. 3, a pin (11) projecting upward from the end face is provided at the upper end of the column (6). The pin (11) is provided with a rotatable lock plate (13) in a groove (12) formed downward from the tip. Further, as shown in FIG. 4, a pair of pins (14) (14) protrudes in the opposite direction at the middle part of the column (6) in the vertical direction outside the diameter thereof. Lock plates (13) and (13) similar to the above are pivotally attached to the distal ends of 14) and (14). First
(15) and (15) shown in the figure are intermediate columns attached to the intermediate portions of the columns (6) and (6). These intermediate columns (15) and (15) also have floor beams (15) in the same manner as described above. 1), the structure of which is similar to those of the columns (6).

Next, (17) is the support (6) and the intermediate support (15)
The upper handrail member connected between the upper ends of the support rails (18) indicates a lower handrail member connected between the support (6) and the intermediate portion of the intermediate support (15). The upper handrail member (17)
A pipe material similar to the support (6) is flattened by crushing both ends thereof. As shown in FIG. 3, a pin insertion hole (19) is formed in the flat portion. Then, first, the lock plate (13) of the pin (11) at the upper end of the support (6) or the intermediate support (15) is vertically arranged along the pin direction as shown by a two-dot chain line in FIG. Then, the pin (11) is inserted into the insertion hole (19). Next, the lock plate (13) is turned to a horizontal position so as to be substantially orthogonal to the pin (11) so as to lock the lock plate (13) so as not to come out upward.

The lower handrail member (18) has the same structure, and the pin insertion holes (19) formed at both ends are inserted into the pins (14) on the side surfaces of the support (6) or the intermediate support (15), and are attached. ing. In order to remove the column (6) from the floor beam (1), the column (6) may be pulled upward while the lock (10) is pushed in. The handrail member is provided with the lock plate (1).
3) Pull out with 90 ° turned. As described above, the column (6) is provided with a pair of pins (14) (14) projecting in opposite directions, and the lower handrail member (18) Select one of the pins (14) (1
In the direction perpendicular to 4), as shown in FIG.
4) are provided and therefore these columns (6)
(6) It can be used even if it is attached to any of the four corners. As shown in FIG. 1, two intermediate columns (15) are provided at an intermediate portion between the pair of columns (6) and (6).
(15) are arranged side by side, and a lower handrail member (18) is attached between one of the intermediate supports (15) and the intermediate support (6) at the corner, while Not installed. This is for entering and exiting during ascending and descending, and as shown in FIG.
0) is spanned.

The work floor (4) is usually provided temporarily for work. However, in some cases, the work floor (4) may be used as it is as a floor of a building. In this specification, both of them are used. Is used in a sense that includes

Effect of the Invention According to the present invention, a support can be erected using a construction member mounting hole formed in a beam, and can be attached to the support by a simple operation of attaching a handrail member. The installation and removal work is troublesome as compared to the construction period, so that it is not necessary to close the opening, and it is not necessary to close the opening. This has the advantage that workers can be moved up and down and cargo can be carried. In addition, since the mounting is performed by using the originally formed beam mounting holes of the beam, there is an effect that it is not necessary to perform a special feature for mounting the temporary handrail. In addition, since the mounting of the support to the beam is performed only by inserting the pin at the lower end or near the lower end into the mounting hole of the beam from above, the lock is prevented from coming off.
There is no need to look into the mounting part from the opening and tighten the nuts etc., and the mounting work can be performed with one touch, and this work does not need to be performed in an unnatural posture from the opening. , The installation work can be done safely. Furthermore, since the handrail member is attached to the support post by inserting the pin at the upper end or the middle part of the support column into the pin insertion hole of the handrail member, the lock plate is simply rotated to prevent the handrail from coming off. No work is required, and the installation and removal work can be performed easily.This structure is very simple with a lock plate pivoted on a pin, and is very simple when mounting a support to a beam. The cost can be reduced as compared with a case where such a spring lock type is also used for attaching the handrail member.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an installation state of a temporary handrail according to the present invention, FIG. 2 is a perspective view showing a mounting structure of a lower end portion of a support, and FIG. 3 is a mounting structure of a handrail member mounted on an upper end of a support. FIG. 4 is a perspective view showing an attachment structure of a lower handrail member attached to an intermediate portion of the support column. (1) ... floor beams, (3) ... holes for attaching building members, (4) ...
Work floor, (5) ... opening, (6) ... prop, (7) ... overhang plate, (9) ... pin, (10) ... lock fitting, (11)
(14) Pin, (13) Lock plate, (17) Upper handrail member, (18) Lower handrail member, (19) Pin insertion hole.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yoshio Mochizuki 6-2-27 Nakanoshima, Kita-ku, Osaka-shi, Osaka Sekisui House Co., Ltd. (56) References JP-A-62-174458 (JP, A) 1986-113855 (JP, U) Actually open 1986-76047 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04G 1/26 E04G 21/32

Claims (1)

(57) [Claims] 1. An opening of a work floor installed on a beam of a steel frame, a plurality of pillars which are detachably erected by using a hole for mounting a building member of the beam, and the opening. And a handrail member which is detachably mounted between the columns so as to surround the column, and the columns are inserted into the mounting holes from above into the lower surface of the plate provided at the lower end or in the vicinity of the lower end and projecting sideways. A pin for a beam to be projected is provided, and the pin for the beam is urged by a spring so as to always protrude outward from the side surface, and when the pin is inserted into the mounting hole, Sliding between the inclined part of the lock fitting and the inner peripheral surface of the mounting hole is automatically pushed in against the spring to enable the insertion of the beam pin, and protrude after the insertion is completed to remove the beam pin. Locking hardware to stop A pin for a handrail member to be inserted into a pin insertion hole of the handrail member is protruded from an upper end or an intermediate portion in a vertical direction of the support column. When inserting into the above-mentioned pin insertion hole, the pin for the handrail member can be inserted by rotating along the pin direction, and after the insertion is completed, the pin is rotated substantially orthogonal to the pin. A temporary handrail for preventing a fall in an opening of a staircase or the like, wherein a rotatable lock plate is provided to prevent a pin for a handrail member from coming off.