JPH07285775A - Safety fence for work - Google Patents

Abstract

PURPOSE:To provide a safety fence for a work to prevent collision of a passer-by and a fall of the fence by a slight gust of wind and prevent the occurrence of a trouble on the fall of a passer-by in a manhole. CONSTITUTION:A safety fence for a work comprises a plurality of fence panels 4a intercoupled in such a manner to be foldable and erected on the floor l of the periphery of a manhole 2; and a plurality of fall prevention panels 4f and 4g coupled in a fall and rise manner to the lower end part of the fence panel 4a and laid over floors 1 on both sides of the fence panel 4a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work safety fence installed around an open manhole for the purpose of preventing falling.

[0002]

2. Description of the Related Art Generally, a manhole for entering and leaving a machine room for maintenance and repairs is provided on a floor near an entrance / exit of an escalator. Normally, this manhole is completely covered with a lid, but maintenance and
Since it is left open during repair, a safety fence is installed around the manhole to prevent falls during maintenance and repair.

7 and 8 show an example of a conventional work safety fence installed near the entrance / exit of the escalator and near the entrance / exit of the escalator. In the drawings, reference numeral 1 indicates a floor near the entrance / exit of the escalator. 2 is a manhole provided on the floor 1 for entering and exiting the machine room of the escalator, and 3 is a floor 1 around the manhole 2.
It is a work safety fence that stands on the top of the building to call attention to passersby and prevent accidents of falling into the manhole 2.

The work safety fence 3 is erected on the floor 1 around the manhole 2 and is attached to a plurality of fence panels 3a covering three sides of the manhole 2 and the abutting portions of the fence panels 3a so as to be adjacent to each other. The fence panels 3a are provided with a plurality of hinges 3b that are rotatably connected to each other so that the fence panels 3a can be folded, and the fence panels 3a are erected in a U-shape.

[0005]

A conventional work safety fence is constructed as described above and has a floor 1 around a manhole 2.
It is installed so as to be self-supporting and is not particularly fixed. Therefore, if a passerby, especially a blind person, bumps into the work safety fence 3, the work safety fence 3
At the same time, there was a problem that it may fall down as it is and sometimes fall into the manhole 2. In addition, there is a problem that even a slight gust may easily fall down.

The present invention has been made in order to solve the above problems, and prevents pedestrians from falling into a manhole or the like, without being hit by a pedestrian or falling down by a slight gust of wind. The purpose is to provide a safety fence for work.

[0007]

A work safety fence according to the present invention includes a plurality of fence panels which are connected so as to be foldable and are erected on a floor around a manhole, and a lower end portion of the fence panel. It is configured to include a plurality of fall prevention panels that are connected so as to be able to tilt up and down and are laid on the floor on both sides of the fence panel.

[0008]

In the work safety fence according to the present invention, when a passerby collides with the fence panel, the passerby steps on the fall prevention panel by himself, so that the work safety fence may fall over and the passerby's manhole may be damaged. Fall accidents are prevented.

[0009]

1 and 2 show an embodiment of a work safety fence according to the present invention, and FIG. 3 is a side sectional view of an essential part of FIG.
2 is a side sectional view of a main part of FIG. 2, in which the same or corresponding parts as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted. The work safety fence 4 is the floor 1 around the manhole 2
A plurality of fence panels 4a that are respectively erected on the top of the fence so as to cover the three sides thereof, and the vertical frames 4 of the adjacent fence panels 4a.
A plurality of hinges 4c that are respectively screwed to b and rotatably connect adjacent fence panels 4a so that they can be folded together, and a mounting bar 4e that is screwed to the lower frame 4d of each fence panel 4a can be raised and lowered. And a plurality of fall prevention panels 4f and 4 that are laid on the floor 1 around the manhole 2
g, and the fall prevention panels 4f and 4g, the fence panel 4a
It is provided with a plurality of hinges 4h that rotatably connect the falling prevention panels 4f and 4g and the mounting bar 4e so as to be attached to both sides thereof.

Fence panel 4a, fall prevention panels 4f and 4
Both g have a rectangular plate shape. The fall prevention panel 4f is attached to the outside of the fence panel 4a, and the fall prevention panel 4g is attached to the inside of the fence panel 4a. The fall prevention panel 4f is configured to be as large as possible.

Reference numerals 5 and 6 are attached to the fall prevention panel 4f and the fall prevention panel 4g, respectively, and when the fall prevention panel 4f and the fall prevention panel 4g are attached to both sides of the fence panel 4a, they stick to each other. A magnet and a suction plate for fixing the fall prevention panels 4f and 4g so as not to fall and spread, and the reference numeral 7 is continuously inserted into the small holes 4i formed at the tip end of each fall prevention panel 4f to form a fence. A fixing screw for fixing the fall prevention panels 4f attached to both sides of the panel 4a, and a reference numeral 8 is screwed to the male screw end portion 7a of the fixing screw 7 so that the fixing screw 7 does not come out from the small hole 4i. It is a fixing nut for fixing.

In order to install the work safety fence in such a structure, the fence panel 4a is spread on the floor 1 around the manhole 2 in an appropriate shape (in the embodiment, a U-shape). ) And make it independent. Also, each fence panel 4a
Lay down the fall prevention panels 4f and 4g on both sides of.

Even if a passerby accidentally collides with the fence panel 4a in such a state, the fall prevention panel 4f connected to the lower end of the fence panel 4a is stepped on by the passerby, so that the fence panel 4a. There is no fear of falling, and therefore, it is possible to prevent a passerby from falling into the manhole 2 with the force of colliding with the fence panel 4a.

On the other hand, to fold this work safety fence,
The fall prevention panels 4f and 4g on both sides of each fence panel 4a are raised and attached to both sides of the fence panel 4a, and the magnet 5 and the attraction plate 6 are attracted. Next, fence panel 4a
Fold the hinge around the hinge 4c, and fall prevention panel 4
Pass the fixing screw 7 through the small hole 4i of f,
The fixing nut 8 is screwed into a. Such compact folding facilitates handling such as transportation and storage.

Example 2. FIG. 5 shows another embodiment of the work safety fence according to the present invention, in which a slip stopper 9 is formed on the surface of the fall prevention panel 4f. According to this example,
During maintenance and inspection of the escalator installed outdoors and cleaning of the floor surface, there is no risk of slipping and falling even if the fall prevention panel 4f is stepped on, which has the effect of increasing safety.

If a braille block (not shown) that can be seen by the blind is attached to the surface of the falling prevention panel 4f, the blind can be alerted. is there.

Embodiment 3. FIG. 6 shows another embodiment of the work safety fence according to the present invention, in which a slip stopper 9 is formed on the back side of the fall prevention panel 4f. According to this embodiment, even if the floor surface around the manhole 2 is slightly wet, the fall prevention panel 4f does not slip and the safety is further enhanced.

[0018]

The work safety fence according to the present invention is composed of a plurality of fence panels which are connected so as to be foldable and are erected on the floor around the manhole, and can be erected at the lower end portion of the fence panels. Even if a passer-by accidentally bumps into the fence panel, the lower end of this fence panel is connected to the fence panel. Since the passer-by passengers step on the fall prevention panel connected to, it is possible to prevent the passerby from falling with the fence panel and falling into the manhole. In addition, there is an effect that it is possible to prevent falling even if a slight gust is encountered.

Further, the fence panel is foldably connected, and the fall prevention panel is also movably connected to the lower end of the fence panel so that it can be attached to both sides of the fence panel, so that it can be folded compactly. This has the effect of facilitating handling such as transportation and storage.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a work safety fence according to the present invention.

FIG. 2 is a perspective view showing a folded state of the work safety fence shown in FIG.

FIG. 3 is a side sectional view of a main part of FIG.

FIG. 4 is a side sectional view of a main part of FIG.

FIG. 5 is a perspective view of another embodiment of the work safety fence according to the present invention.

FIG. 6 is a perspective view of another embodiment of the work safety fence according to the present invention.

FIG. 7 is a perspective view showing an example of a conventional work safety fence.

8 is a perspective view showing a folded state of the work safety fence shown in FIG. 7. FIG.

[Explanation of symbols]

1 floor, 2 manhole, 4a fence panel, 4f fall prevention panel, 4g fall prevention panel.

Claims (1)

[Claims] 1. In a work safety fence installed around a manhole, a plurality of fence panels that are connected so as to be foldable and are erected on the floor around the manhole and a lower end portion of the fence panel. A safety fence for work, comprising a plurality of fall prevention panels which are connected so as to be able to tilt up and down and are laid on the floor on both sides of the fence panel.