JP7121381B2 - Falling object scattering prevention device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a falling object scattering prevention device that prevents building materials from being scattered when they are lifted or lowered from a scaffold used for construction of a building.

Temporary scaffolding is sometimes erected at a building construction site or a building repair work site. It is necessary to pull up the scaffolding members required for assembling these scaffoldings and the members required for construction and renovation work to the upper floors. In this case, there is a risk that these necessary members will fall, which may injure pedestrians. In order to prevent this, the height of the scaffolding is used as a standard, and third parties such as pedestrians are prohibited from entering in the horizontal direction from the base of the scaffolding on the ground for half the height. There may be regulations prohibiting

As described above, in the case of a high-rise building, in the case of a high-rise building, it is necessary to restrict entry to a certain extent in the horizontal direction from the foundation part of the high-rise building. , the regulation has its limits.

As a solution to this, a protective net fence for buildings that is constructed on a building in which the surface of the outer wall of the reinforced concrete structure is finished with an exterior material is described in JP-A-2015-052255. A plurality of fasteners attached to the whole or a part of the outer wall of a building and provided with width adjustment holes and wire passage tubes, connecting members connecting the fasteners, and wire passage tubes of the respective fasteners. Wires passed through, turnbuckles provided on the upper and lower parts of the wires for adjusting the tension of each wire, and wires hung on the turnbuckles, and a net is attached to the plurality of wires. Disclosed is a protective net fence for buildings with a protective net, which is attached by and is characterized in that the outer wall of the building is wholly or partly covered with the net.

However, when lifting a relatively large material to the upper floor, the net is removed and a rope is used to pull it up from the scaffolding on the lower floor to the scaffolding on the upper floor. ing. Materials cannot be lifted up to the upper floor without removing the net in this way, and if the materials fall from the place where the net is removed, the falling objects may scatter around.

JP 2015-052255 A

The present invention has been made in view of the above points, and its object is to provide a device that does not require the removal of the scaffolding net and prevents the falling materials from scattering around as much as possible even if materials fall. is to provide

In order to solve the above-mentioned problems, the falling object scattering prevention device of the first aspect is provided with a scaffold that is attached to a building having at least a plurality of floors and serves as a scaffolding for workers, and a scaffold for raising and lowering luggage from above or below. and an elevating section that serves as a passage, and the elevating section is attached to the front of the scaffold.
In the second aspect of the device for preventing scattering of falling objects, in the first aspect, the scaffold has a rear support and a front support that serve as supports for the scaffold, the rear support is fixed to the building, and the front support is liftable. It is fixed with the part.
Further, in the falling object scattering prevention device of the third aspect, in the second aspect, the elevating section has an elevating front strut serving as a strut, and a supporting member that connects the lower part of the elevating front strut and the front strut, It further has
A fourth aspect of the device for preventing scattering of falling objects is that, in the first to third aspects, a net covering the elevating section is provided.

Since the present invention is constructed and operates as described above, it is not necessary to remove the net of the scaffolding, and even if materials fall, the falling materials can be prevented from scattering around as much as possible. It is possible to provide a device for

It is a perspective view of a falling object scattering prevention device. 1 is a schematic perspective view of a device for preventing scattering of falling objects; FIG. It is a perspective view of a scaffolding and a raising/lowering part. FIG. 2 is an end view taken along line IV-IV of FIG. 1; It is a front view of a scaffolding and a raising/lowering part. It is a top view of a scaffolding and a raising/lowering part.

Examples are described below. The falling object scattering prevention device 10 of the present embodiment includes scaffolds 20 attached to a plurality of floors of a building 100 to serve as scaffolds, and upper and lower floors attached to the scaffolds 20 of the plurality of floors. and an elevating section 30 that serves as a passageway for lifting and lowering luggage to and from lower floors. In other words, the worker can use the rope to raise or lower a load such as building materials from the scaffolding 20 using the elevating section 30 as a passageway.

The building 100 is preferably a multi-story building such as an apartment complex or a building. In this embodiment, a scaffolding 20 is attached for work when constructing a building 100 having multiple floors or when remodeling the building 100 . A protection net (not shown) can be arranged around the outer periphery of the scaffolding 20 . In FIG. 2, for ease of understanding, the outline of the scaffolding 20 is conceptually shown, and the lifting section 30 is shown.

The scaffolding 20 has a plurality of rear struts 21 arranged on the building 100 side and a front strut 22 arranged on the opposite side of the building 100, and the lowest part 22a of the rear strut 21 and the front strut 22 is It is connected to a plurality of jack bases 23 that serve as bases for holding the rear support column 21 and the front support column 22, respectively. The jack base 23 is placed on a floor plate 23a.

The number of the plurality of rear struts 21 and the plurality of front struts 22 varies depending on the scale of the building 100, and the plurality of rear struts 21, the plurality of front struts 22 and the jack base 23 are spaced at predetermined intervals. are placed in This spacing is preferably between 1800 mm and 2000 mm.

In addition, the scaffolding 20 is provided at an arbitrary position between the floor surface and the ceiling surface corresponding to each story of the building 100 in the rear support column 21 and the front support column 22 to connect the rear support column 21 and the front support column 22, respectively. It has a plurality of crossbars 24 arranged horizontally. Further, the plurality of rear struts 21, the front strut 22 and the plurality of horizontal beams 24 are connected to each other. However, it is also possible to connect with a pin 25 together with a brace 27 which will be described later.

Further, a plate-shaped scaffolding board 26 is arranged in parallel with the building 100 so as to bridge two horizontal beams 24 out of the plurality of horizontal beams 24 . In addition, plate-shaped scaffolding boards 26 are arranged in parallel with the building 100 so as to bridge the other two horizontal beams 24 . Thereby, the scaffolding 20 corresponding to each floor of the building 100 can be constructed. In order to secure the strength, an X-shaped brace 27 can be arranged so as to extend diagonally over the upper and lower portions of each of the two rear struts 21 . The same applies to the front strut 22 as well. In addition, it is also preferable to use a horizontal rod-shaped second cross bar below the X-shaped brace 27 to prevent the operator from falling. Further, by arranging diagonally across the upper and lower portions of the other front struts 22 , the braces 27 can be provided in the portions corresponding to the respective floors of the building 100 . In addition, as will be described later, it is preferable not to attach the brace 27 to the portion to which the elevating section 30 is attached.

It also has a plurality of wall ties 28 for connecting the building 100 and the scaffolding 20 and fixing the scaffolding to the building 100 . The wall joints 28 can be provided, for example, in portions corresponding to each floor of the building 100 in the rear support 21 arranged on the side of the building 100, or in portions corresponding to every other floor in the building 100. It is also possible to provide

An elevating section 30, which serves as a passageway for lifting building materials from a lower floor to an upper floor or from an upper floor to a lower floor, passes through the scaffolding 20 in front of the scaffolding 20, i.e., the building 100. It is arranged in a direction opposite to the direction of the position of (rear R), and is arranged so as not to interfere with the movement of a worker (not shown) between the building 100 and the scaffolding 20 .

That is, when a worker (not shown) performs work such as renovation on the building 100, the elevating unit 30 is placed in front F of the scaffolding 20 instead of between the building 100 and the scaffolding 20 (rear R). By arranging it, when the construction material is pulled up to the upper floor or lowered from the upper floor to the lower floor when the worker is doing work such as renovation, the building material may fall. In addition, collisions with other workers working on scaffolding 20 on the floor below can be avoided (see FIG. 4).

Here, the front F is the front F when the back is turned to the building 100 . Therefore, it is preferable that the building 100, the scaffolding 20, and the lifting section 30 are arranged in this order from the rear R to the front F in the end view. It is preferable to provide the lifting section 30 on the outside of the scaffolding 20 (on the side opposite to the building 100, on the front side F).

The elevation unit 30 has a plurality of rear elevation struts 31 attached to the front struts 22 and fixed by a plurality of universal clamps 36a, which will be described later, and a front elevation strut 32 arranged on the opposite side of the front struts 22. . The lifting rear column 31 and the lifting front column 32 together constitute the lifting section 30 as a column. In addition, the elevating unit 30 has the elevating rear support column 31 and the elevating front support column 32 at arbitrary positions between the floor surface and the ceiling surface corresponding to each floor of the building 100, respectively. It has a plurality of elevating crossbars 34 arranged horizontally for connecting to each other. Further, the elevation rear strut 31, the elevation front strut 32, and the plurality of elevation horizontal beams 34 are connected to each other. However, they can also be connected by pins 37 together with braces 38, which will be described later.

Moreover, it is preferable that the elevating unit 30 is not installed from the ground, but is arranged upward from, for example, the second or third floor of the building 100 . In addition, by placing a support member 36 for supporting the elevation front column 32 at the lowest part of the elevation front column 32 and using a universal clamp 36a, one end of the support member 36 is connected to the front column 22 corresponding to the lower floor, The other end can support the lifting section 30 by being connected to the lifting front column 32 . As a standard for installing scaffolding, the height from the road surface to the bottom of the property at which the so-called morning glory will be installed shall be 5 m or more in the case of a road without distinction between sidewalks and roads, and when there is a sidewalk. Since the height of is set to 4 m or more, it is preferable to arrange upward from the 2nd or 3rd floor of the building 100 in order to comply with it.

The lifting unit 30 can be attached to at least part of the scaffolding 20 . That is, among the plurality of front struts 22, the two lifting rear struts 31 attached to and fixed to the two front struts 22 and the two lifting rear struts 31 are arranged on the opposite side (front F). It has two elevating front struts 32 that are connected to each other. In order to connect the rear elevation strut 31 and the front elevation strut 32 respectively, there are two elevation horizontal beams 34 arranged horizontally from the rear R to the front F. It also has a front horizontal beam 35 for connecting the two lifting front struts 32 . It is preferably located at the same height as the lift rungs 34 .

Also, in order to connect the plurality of rear pillars 31 and the front pillars 22, it is possible to use a universal clamp 36a whose connection angle can be changed.

Also, an X-shaped brace 38 can be provided on the front up/down support pillar 32 to ensure strength. In addition, it is also preferable to use a horizontally rod-shaped second cross bar below the X-shaped brace 38 . Furthermore, a net 40 that covers the entire lifting section 30 can be further arranged. As a result, even if a load such as a building material falls in the lifting section 30, it is possible to prevent the load from jumping out and scattering around. In particular, when a protective net is arranged on the scaffolding 20, it is not necessary to remove the net for loading and unloading a load, so that the safety of workers working on the scaffolding 20 can be ensured. Incidentally, it is also preferable to extend the horizontal beam 24 described above and integrate it with the elevation horizontal beam 34 .

The elevating section 30 having the above configuration includes an elevating rear strut 31, an elevating front strut 32, two elevating horizontal beams 34, and a front The horizontal beam 35 has an opening 39 shaped like a square when viewed from above. In other words, the opening 39 is configured to penetrate from the height corresponding to the upper floor to the height corresponding to the lower floor, and the space in the opening 39 is used for building materials and the like. Can be used as an aisle for loading and unloading cargo. In this way, when a worker is positioned on each scaffolding 20 corresponding to each arbitrary floor, the lifting section 30 has an opening 39 corresponding to that floor, so that ropes, wires, strings, etc. (not shown) can be used. , pulleys can be used to lift and lower loads from scaffolding 20 at the floor most suitable for the task in question.

In addition, as described above, by covering the whole lifting section 30 with the net 40, it is possible to further prevent the scattering of the luggage when it falls. In this embodiment, the elevating unit 30 is arranged at one location on the scaffolding 20, but a plurality of elevating units 30 may be arranged around the building 100, for example.

10 Falling object scattering prevention device 20 Scaffolding 21 Rear strut 22 Front strut 23 Jack base 24 Horizontal beam 25 Pin 30 Elevating part 31 Elevating rear strut 32 Elevating front strut 34 Elevating horizontal beam 35 Front horizontal beam 36 Supporting member 36a Clamp 37 Pin 40 Net 100 buildings

Claims (3)

a scaffold attached to a building having at least multiple floors to serve as a scaffold for a worker and comprising a front support;
an elevating section that serves as a passage for lifting a load from a lower floor to an upper floor or lowering it from an upper floor to a lower floor using ropes, wires, strings, etc., from the scaffold;
The elevating unit is installed in front of the scaffold and installed upward from a height corresponding to the second or third floor of the building in order to conform to the height at which the morning glory is installed,
The elevating section further has a front elevating support column and a support member for supporting the front elevating support column. Support the elevating unit by connecting to the front strut corresponding to the height of the floor,
The elevating unit has an opening,
The opening is configured to penetrate from a height corresponding to the upper floor to a height corresponding to the second or third floor of the building, and the space in the opening is defined by the rope, By using wires, strings, etc., as a passageway for lifting and unloading the cargo, when a worker drops the cargo into the elevating section that serves as the passageway, the cargo can be removed from the scaffolding on the floor below. equipment to prevent the cargo from colliding with other workers. The scaffold has a rear support that serves as a support for the scaffold,
2. A device for preventing scattering of falling objects according to claim 1, wherein said rear strut is fixed to said building. 3. A device for preventing scattering of falling objects according to claim 1 or 2 , further comprising a net covering said elevating section.

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