JPH0579194A - Fall preventive net for working scaffold - Google Patents

Abstract

PURPOSE:To prevent a working scaffold from oscillation caused by strong wind. CONSTITUTION:A fall preventing net is formed in a square shape and, at the same time, the upper side section 12 has rubber braids constituted of the surface braid and the rear braid, and both right and left sides and the lower side of a remaining part 11 form a fall preventing net 10 fixed to longitudinal members 51 and the horizontal members 52. When wind pressure is applied to the fall preventing net 10, the upper side section 12 formed in the rubber braids is deformed in one direction to pass wind, and oscillation of the woring scaffold is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work fall scaffolding net used for construction of a building.

[0002]

BACKGROUND ART In construction and maintenance of buildings such as houses, work scaffolds are sometimes used to perform work in high places.

This work scaffold is called a single pipe scaffold or the like because it is removed after the work is completed, and as shown in FIG. 5, it is assembled from a plurality of vertical members 51 and horizontal members 52 in a lattice shape. , There is a simple structure that is arranged around the building 53. A fall prevention net 54 is attached to the work scaffold in order to prevent a worker from falling from a high place.

The conventional fall prevention net 54 includes a vertical member 51.
And a horizontal member 52 are formed in a quadrangle so as to fit in a lattice shape, and four sides thereof are connected and fixed to the vertical member 51 and the horizontal member 52 by ropes 55, respectively.

[0005]

However, since the conventional fall prevention net 54 has its four sides fixed to the vertical members 51 and the horizontal members 52, the wind pressure is prevented when the strong wind blows. The net 54 receives it. Then,
There is a problem that the work scaffold sways, and in the worst case, the work scaffold falls, which is dangerous in terms of work.

An object of the present invention is to provide a net for preventing the work scaffold from falling, which can reduce the swing of the work scaffold due to a strong wind.

[0007]

The falling prevention net of a work scaffold of the present invention is attached to a work scaffold constituted by connecting a plurality of vertical members and cross members, and is formed in a quadrangle. In addition, the upper side is made of rubber knitting over a predetermined length in the vertical direction, and the left and right sides and the lower side of the remaining portion are fixed to the vertical and horizontal members of the work scaffold. .. Here, rubber knitting is a kind of knitting method for rod knitting, and is made up of front knitting and back knitting, and is stretchable in one direction like a cuff of a sweater. Further, the rubber knitted portion and the vertical member and / or the horizontal member may be fixedly connected with a rope, a wire or the like or elastically connected with a rubber or the like, or may not be connected at all.

Further, the work-scaffolding fall-prevention net of the present invention is formed in a quadrangular shape, and an upper side portion formed over a predetermined length in the longitudinal direction is made of an elastic member and at least one of the vertical member and the horizontal member. It is characterized in that it is connected to either one side and the left and right sides and the lower side of the remaining part are fixed to the vertical and horizontal members of the working scaffold. Examples of the elastic member include rubber and spring.

[0009]

[Operation] When wind pressure is applied to the work prevention scaffolding net, a force is applied to the work scaffolding via the net. However, the upper side portion formed by rubber knitting extends in one direction and is deformed, or the upper side portion is deformed against the biasing force of the elastic member. The wind escapes from this deformed portion, and no more force is applied to the scaffold for work. On the other hand, since the left and right sides and the lower side of the portion other than the upper side portion of the fall prevention net are fixed to the work scaffold, the function as the fall prevention net is maintained.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. Here, the same components as those in the above-mentioned conventional example are designated by the same reference numerals and the description thereof will be omitted.

A first embodiment of the present invention is shown in FIGS. The falling prevention net 10 of this embodiment is formed in a substantially quadrangular shape so as to match a lattice shape composed of a vertical member 51 and a horizontal member 52, and a main body 11 formed from the center to the lower end, and the main body 11. Upper part 1 above
2 is included. The main body 11 is a nylon rope woven in a lattice shape. The upper side portion 12 is formed by knitting a rope made of nylon with rubber over a predetermined length L in the vertical direction from the upper end. The seam between the main body 11 and the upper side portion 12 is connected by a nylon rope. Here, rubber knitting is a kind of knitting method for rod knitting,
It consists of front knitting and back knitting. In this embodiment, the upper side portion 12 is knitted with rubber so as to expand and contract in the lateral direction.
Further, the left and right sides and the lower side of the main body 11 are fixed to the vertical members 51 and the horizontal members 52 of the work scaffold by ropes 55. The rubber-knitted upper side portion 12 may be connected to the vertical member 51 and / or the horizontal member 52 by an appropriate member such as a rope, a wire, or a rubber, if necessary.

In this embodiment having such a configuration, the main body 11
The falling prevention net 10 including the upper side portion 12 is attached to the vertical member 51 and the horizontal member 52 of the scaffold for work by the rope 55.

When wind pressure is applied to the fall-prevention net 10 due to a strong wind, a force tends to be applied to the scaffold for work. However, as shown in FIG. 2, the upper side portion 12 formed by rubber knitting extends in the horizontal direction and is deformed, and the wind does not escape from the deformed portion, so that the working scaffolding is not further affected by the chihuahua. After that, when the wind weakens, the stretched and deformed upper side portion 12 returns to the original shape by the restoring force of the rubber knitting.

According to the fall-prevention net 10 having such a structure, the upper side portion 12 is made of rubber knitting over a predetermined length in the longitudinal direction. Therefore, even if the net 10 is properly subjected to wind pressure due to strong wind, Since the upper side portion 12 is deformed so that the wind escapes, the wind pressure is not transmitted to the work scaffold. Therefore, it is possible to reduce the shaking of the work scaffold, and it is safe in terms of work. Moreover, the remaining portion, that is, the left and right sides and the lower side of the main body 11 are the vertical member 51 and the horizontal member 52 of the working scaffold.
Since it is fixed by the rope 55, the function as a fall prevention net is maintained as usual. Also, the upper side 12
Since, when there is no wind, the shape is restored to the same shape as that of the main body 11, so unlike the case where the upper side portion 12 is not provided at all, it is possible to give the operator a psychological sense of security.

A second embodiment of the present invention is shown in FIGS. The falling prevention net 20 of this embodiment is formed in a substantially quadrangular shape so as to fit a lattice shape composed of a vertical member 51 and a horizontal member 52, and a main body 21 formed from the center to the lower end and above the main body 21. Is composed of an upper side portion 22 of a predetermined length L in the vertical direction. These body 21
The upper side portion 22 is formed by knitting a rope made of nylon in a lattice shape. Similar to the first embodiment, the left and right sides and the lower side of the main body 21 are fixed to the vertical members 51 and the horizontal members 52 of the work scaffold by ropes 55. In addition, the upper side portion 22 is connected to the horizontal member 52 at the upper side by a predetermined number of elastic cords 23 that are elastic members.

When wind pressure is applied to the fall prevention net 20 having such a structure, a force tends to be exerted on the scaffold for work. However, as shown in FIG. 4, the upper side portion 22 connected to the cross member 52 by the elastic cord 23 is deformed against the biasing force of the elastic cord 23, and the wind escapes from this deformed portion. After that, when the wind weakens, the upper side portion 12 returns to the original shape by the urging force of the rubber cord 23. Also in the second embodiment having such a configuration, the first
The same effect as that of the embodiment can be obtained.

Although the elastic member is the rubber cord 23 in the second embodiment, the elastic member may be a member having elasticity such as a spring. Further, the elastic member may be connected not only to the horizontal member 52 but also to both the vertical member 51 and the horizontal member 52 or only to the vertical member 51.

The upper side 1 of the falling prevention nets 10 and 20
It suffices that 2, 2 are provided so as to be elastically deformable with respect to the vertical member 51 and the horizontal member 52, and the means therefor does not matter. At this time, the upper side of the net is simply knitted in a lattice shape, and the vertical member 51 or the horizontal member 52 is made of rope having no elasticity or elasticity.
It can be installed loosely (in a loose state), but this will cause the upper side to flutter even with a little wind, making it difficult to achieve the intended purpose.

[0019]

EFFECTS OF THE INVENTION According to the work-scaffolding fall-prevention net of the present invention, it is possible to reduce the sway of the work-scaffold due to strong wind.

[Brief description of drawings]

FIG. 1 is a front view of a falling prevention net for a work scaffold according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing the operation of the first embodiment.

FIG. 3 is a front view of a falling prevention net for a work scaffold according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing the operation of the second embodiment.

FIG. 5 is a front view showing a conventional example.

[Explanation of symbols]

 10 Fall Prevention Net 12 Upper Side 20 Fall Prevention Net 22 Upper Side 23 Rubber String as Elastic Member 51 Vertical Material 52 Horizontal Material

Claims (2)

[Claims] 1. A work-scaffold fall-prevention net, which is attached to a work scaffold configured by connecting a plurality of vertical members and cross members, is formed in a substantially rectangular shape, and has an upper side portion in a vertical direction. A rubber net over a predetermined length, and the left and right sides and the lower side of the remaining portion are fixed to the vertical and horizontal members of the work scaffold, respectively. .. 2. A fall prevention net for a work scaffolding, which is attached to a work scaffold configured by connecting a plurality of vertical members and cross members, is formed in a substantially rectangular shape, and has a predetermined length in the vertical direction. The upper side part formed over the length is connected to at least one of the vertical member and the horizontal member by an elastic member, and the left and right sides and the lower side of the remaining part are fixed to the vertical member and the horizontal member of the work scaffold. A net for preventing falling of work scaffolds that is characterized.