JPH08326328A - Safety net mounting structure - Google Patents

Abstract

PURPOSE: To enable a safety net to be stored easily and to be stretched even on an upper side of a balcony or the like extending back. CONSTITUTION: In a safety net mounting structure wherein a safety net 25 is set on the side of scaffold 30 set along an outer wall 52 of a building 51 so that it is stretched horizontally between the scaffold 30 and the outer wall 52 and can be stored on the side of the scaffold 30, a single pipe 20 serving as a horizontal rod is mounted on the scaffold 30 through a plurality of mounting members 20a, and is provided with a master ring 21 which can move between the stretching position and storing position of the net 25. For stretching the net 25 after setting an end of master rope 22 to each master ring 21, and the master rope 22 is set so that it may be tightened through a pulley serving as tightening means. A lower part 25b as one end of the net 25 is fitted to the master rope at several positions thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a safety net used for construction work such as repair, painting or construction of an outer wall of a building.

[0002]

2. Description of the Related Art Conventionally, as this type, for example, there is one as shown in FIGS. 11 and 12 (see Japanese Patent Publication No. 7-6373). The safety net mounting bracket 1 includes a base member 3 provided with a clamp mechanism 2 that detachably clamps a steel pipe 31 of a scaffold 30 assembled along an outer wall of a building, and an inner pipe inside an outer pipe 4a. 4b is slidably inserted in a retaining state to perform expansion and contraction, and an arm member 4 rotatably attached to the base member 3 so as to maintain an upright state and a horizontal state, and a slide of the inner pipe 4b. A lock member 5 for locking and locking the arm member 4 to adjust the expansion and contraction of the arm member 4, and a hook fitting 4c attached to the arm member 4 so that a safety net (not shown) can be hooked.

When a safety net is used by hanging over the upper side of the arm member 4 in the horizontal state, and when the safety net is not necessary, the arm member 4 is contracted and rotated upward to stand up. I am trying to store it.

[0004]

However, in such a conventional one, the arm member 4 is raised when the safety net is not used or when it is difficult to work with the safety net. Since the safety net is stored, it is difficult to raise the arm member 4 in a state where the safety net is hung on the arm member 4 because the working posture is bad and the labor is heavy. In some cases, such a so-called cantilever arm member 4 cannot be used.

[0005] Therefore, an object of the present invention is to provide a safety net mounting structure that can easily store the safety net and can easily span the safety net even on the upper side of a balcony or the like having a depth.

[0006]

The present invention has been made in view of the above problems, and the invention described in claim 1 is a safety net on the scaffold side assembled along the outer wall of a building. Is attached, the safety net is stretched substantially horizontally between the scaffold and the outer wall, and in the safety net mounting structure capable of being stored on the scaffold side, a plurality of horizontal bars are attached to the scaffold. The master ring is attached to the horizontal rod, and the master ring is movably arranged between the stretch position and the storage position of the safety net. It is characterized in that the master rope is set to be tensionable via a tensioning means, and further, one end edge portion of the safety net is attached to the master rope at several places to form a safety net mounting structure.

[0007]

[Operation] According to the invention described in claim 1, in order to stretch the safety net, first, a plurality of horizontal bars are attached to the scaffold by a plurality of mounting portions, respectively, and the master is movably attached to these horizontal bars. Place the ring.

Then, both ends of the master rope are attached to the master ring of each horizontal rod, and the master rope is tensioned by the tension means, and one end edge of the safety net is attached to the master rope at several places.

In this state, the position of each master ring is
By setting the safety net at the straddling position (position close to the outer wall of the building), the safety net can be stretched in a substantially horizontal state and close to the outer wall.

By supporting the safety net with the horizontal rods attached to the scaffold at the plurality of attachment portions in this manner, the horizontal rods are not so-called cantilever beams as in the conventional case.
Moreover, since the main rope is tensioned between the horizontal bars, the safety net can be stretched over the upper side of the balcony even if the balcony is deep.

On the other hand, when the safety net is not needed or is in the way, the master ring is moved to the storage position of the safety net (position separated from the outer wall of the building) to store the safety net on the scaffolding side. . Since the safety net can be stored only by moving the master ring in this manner, it can be stored more easily than when the arm member 4 is erected in a state where the safety net is hung over the arm member 4 as in the conventional case.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 10 show an embodiment of the present invention. The same members as the conventional ones will be described with the same reference numerals.

First, the structure will be described. Reference numeral 30 in FIG.
Is a scaffold assembled along the outer wall 52 of the building 51. A safety net 25 is attached to the scaffold 30 side, and the safety net 25 is stretched substantially horizontally between the scaffold 30 and the outer wall 52. At the same time, it can be stored on the side of the scaffold 30.

Specifically, when the building 51 is a gable, the single pipes 20 as "horizontal bars" are attached to both ends of the corners of the scaffold 30 on the gable side through a pair of attachment portions 20a. There is. Further, the safety net mounting bracket 11 is attached to the scaffold 30 between the opposing single pipes 20, and the balcony 5 is provided between the other opposing single pipes 20.
An intermediate rod 19 is attached adjacent to 3 via a pair of attaching portions 19a.

An annular master ring 21 is movably arranged on each of the single pipe 20, the intermediate rod 19 and the safety net mounting bracket 11. These master rings 21 are movably arranged between a straddling position of the safety net 25 (a position close to the outer wall 52 of the building 51) and a storage position (a position close to the scaffold 30).

Both ends of the master rope 22 are attached to each of the master rings 21, and the master rope 22 is hung on the balcony 53 or the like.

That is, this master rope 22 is shown in FIGS.
As shown in FIG. 2, hook members 23 attached to the master ring 21 are provided at both ends, and a tension pulley 24 as “tensioning means” is arranged at an intermediate portion of the master rope 22. By pulling strongly with the terminal portion 22a, the master rope 22 is pulled through the tension pulley 24 as shown in FIG.
The tension is changed from the state shown by the chain double-dashed line to the state shown by the solid line. Even if the master rope terminal portion 22a is separated, the master rope 22 does not loosen.

The safety net mounting bracket 11
The upper part 25a of the safety net 25 is attached to the scaffold 30 located above the single pipe 20, and the lower part 25b, which is the "one end edge", is attached to the master rope 22 at intervals of about 60 cm for the binding ring 26 and the connection. It is tied with rope 27 etc. (Fig. 10
reference).

By the way, in the safety net mounting bracket 11, the base member 13 is detachably mounted to the steel pipe 31 along the vertical direction of the scaffold 30 through the clamp mechanism 12, and the base member 13 is also detachable.
An arm member 14 is rotatably attached in the vertical direction, and the arm member 14 can be maintained in a horizontal state and can be rotated downward so as to extend vertically downward.

Specifically, the clamp mechanism 12 is substantially the same as that of the conventional example, and as shown in FIGS. 1 and 2, the fixed side holding member for holding the steel pipe 31 on the upper side of the base member 13. 12a is fixed, and one end of the movable side holding member 12c is rotatably attached to one end of the fixed side holding member 12a via a shaft (not shown). Male screw member 12d on the end side
Is rotatably provided, and the male screw member 12d is further inserted into the other end of the movable side holding member 12c so that the nut 12
It is screwed to e. By tightening the nut 12e, the steel pipe 31 can be tightened by both the holding members 12a and 12c. Further, in this clamp mechanism 12, a V-shaped member 12f with which the steel pipe 31 is engaged is fixed to the lower side of the base member 13.

As shown in FIGS. 2 and 4, the base member 13 has a rectangular tubular shape with a horizontal cross section, and the base end of the arm member 14 is attached to the rear surface portion 13a on which the clamp mechanism 12 is disposed. An insertion hole 13b for inserting and removing the portion 14a side is formed, and a front surface portion 13c facing the rear surface portion 13a has a
The opening 1 so that the arm member 14 can be rotated downward from the horizontal state (so that the arm member 14 can be rotated between the state in which the arm member 14 faces the horizontal direction and the state in which the arm member 14 faces almost directly below).
3d is formed. Further, the base member 13 has a pair of side surface portions 13e formed with elongated holes 13f extending in a substantially horizontal direction for pivotally supporting the arm member 14.

Further, the arm member 14 has the structure shown in FIGS.
As shown in, the cross section has a circular tubular shape, and the base end portion 14a
A pair of shaft holes 14b through which the bolts 15 are inserted are formed on the side, and a pair of hooks 14c is fixed to the tip end portion.

The shaft hole 14b of the arm member 14
The bolt 15 is inserted into the elongated hole 13f of the base member 13 and is screwed into the nut 16 so that the arm member 1
4 is attached to the base member 13.

When the base end portion 14a of the arm member 14 is inserted into the insertion hole 13b of the base member 13, the locking position of the arm member 14 to the peripheral edge portion of the insertion hole 13b and the bolt 15 pivoting position. Since the arm member 14 is supported at two points, the arm member 14 is maintained in a horizontal state.

Further, the arm member 14 is provided through the elongated hole 13f.
4 is slid to the right in FIG. 4 and the base end portion 14a of the arm member 14 is pulled out from the insertion hole 13b of the base member 13, the arm member 14 moves downward as indicated by the chain double-dashed line in FIG. It is designed to rotate.

Next, the operation will be described.

First, the hook members 23 at both ends of the master rope 22 are attached to each master ring 21 attached to the single pipe 20 or the like.
After installing and lightly tensioning the master rope 22, this master rope 22
Then, the lower portion 25b of the safety net 25 is tied with a binding ring 26 or the like.

From this state, the master ring 21 is moved to the stretched position side (outer wall 52 side) of the safety net 25.

Then, by pulling strongly with the master rope terminal portion 22a, the master rope 22 is tensioned through the tension pulley 24 from the state shown by the chain double-dashed line in FIG. 9 to the state shown by the solid line.

By thus stretching the safety net 25, it is possible to ensure the safety when working on the roof after the roof unit 28 is placed.

On the other hand, when the safety net 25 is not necessary or becomes an obstacle, the master ring 21, the main rope 22 and the like are slid toward the scaffolding side, and the arm member 14 of the safety net mounting bracket 11 is rotated downward. By moving it, the safety net 25 can be brought into a folded state very easily.

At this time, the arm member 14 can be easily rotated downward by pulling out the base end portion 14a from the insertion hole 13b through the elongated hole 13f.

Further, since the arm member 14 is rotated downward when the arm member 14 is stored, the arm member 14 can be arranged close to the eaves 33 directly below, and at the same time, the eaves 33. Does not get in the way, so that it is not necessary to make the arm member extendable and retractable as in the conventional case, so that the workability is improved and the structure can be simplified.

Further, when the safety net 25 is not used, the master ring 21 is moved to the base end 14a side of the arm member 14 and then the arm member 14 is rotated downward. The arm member 14 can be rotated very easily as compared with the conventional structure in which the arm member 14 is rotated upward while the weight of the safety net 25 is applied.

Furthermore, as described above, the plurality of mounting portions 2
By supporting the safety net 25 with the single pipe 20 attached to the scaffold 30 at 0a, this single pipe 20 is not a so-called cantilever as in the past, and each single pipe 20
Because I am nervous with the main rope 22 hanging between
Even if there is a depth such as the balcony 53, the safety net 25 can be stretched substantially horizontally over the upper side.

Further, since the safety net 25 can be stored only by moving the master ring 21 as described above, when the arm member 4 is erected while the safety net is hung over the arm member 4 as in the conventional case. More easily stored.

Although the embodiment of the present invention has been described with reference to the drawings, the specific configuration is not limited to this embodiment, and there are design changes and the like within a range not departing from the gist of the present invention. However, it is included in the present invention.

[0039]

As described above, according to the present invention, by supporting the safety net by the horizontal rods attached to the scaffold at the plurality of attachment portions, the horizontal rods have a so-called conventional structure. Since it is not a cantilever and it is tense with the main rope hanging between the horizontal bars, it is possible to stretch the safety net almost horizontally above this even when there is a depth such as on the balcony. it can.

On the other hand, since the safety net can be stored simply by moving the master ring, the arm member 4 can be stored as in the conventional case.
This provides a practically useful effect that the arm member 4 can be stored more easily than when the arm member 4 is erected in a state in which the safety net is spanned over.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a state where a safety net mounting bracket is used according to an embodiment of the present invention.

FIG. 2 is a view showing a state in which a V-shaped member is attached to a base member showing the same embodiment, (a) is a front view thereof,
(B) is a bottom view of (a), and (c) is a right side view of (a).

FIG. 3 is a front view of an arm member having no hook fitting according to the embodiment.

FIG. 4 is a front view of a safety net mounting bracket showing the embodiment.

FIG. 5 is a view showing an arrangement state of the single pipe according to the embodiment.

FIG. 6 is a view corresponding to FIG. 5 showing a disposition state of the safety net mounting brackets of the embodiment.

FIG. 7 is a perspective view showing a disposition state of a safety net mounting bracket of the embodiment.

FIG. 8 is a perspective view showing a state where the hook member is attached to the master link attached to the single pipe according to the embodiment.

FIG. 9 is a front view showing the master rope according to the embodiment.

FIG. 10 is a view showing a binding ring and a rope for connection when attaching the safety net to the master rope according to the embodiment.

FIG. 11 is a perspective view showing a conventional safety net mounting bracket.

FIG. 12 is a front view showing the conventional example.

[Explanation of symbols]

 20 Single pipe (horizontal bar) 20a Mounting part 21 Master ring 22 Master rope 24 Tension pulley (tensioning means) 25 Safety net 25b Lower part (one edge) 30 Scaffold 51 Building 52 Outer wall

Claims (1)

[Claims] 1. A safety net is attached to a scaffold side assembled along an outer wall of a building, the safety net is stretched substantially horizontally between the scaffold and the outer wall, and the scaffold side is also provided. In the safety net mounting structure that can be stored in, the horizontal rod is attached to the scaffold by a plurality of mounting portions, and the master ring can be moved to the horizontal rod between the stretch position and the storage position of the safety net. The end of the master rope is attached to each master ring, and the master rope is set to be tensionable via a tensioning means. Furthermore, one end edge of the safety net is attached to the master rope. Safety net mounting structure characterized by being installed in several places.