JP3123454U - Fall prevention sheet for construction work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably receive a drop of bolts, nuts, tools and small members with high strength in construction of a vertical communication space such as an elevator installation space of a building, and to allow the penetration of vertical members and movement of articles and people. Providing fall prevention sheets for construction work.
SOLUTION: Two upper sheets and one lower sheet 1a woven with polypropylene yarn are stacked one above the other, two nylon diagonal belts 1b in the diagonal direction between the upper and lower sheets, and a nylon peripheral belt 1c along the periphery of the sheet. The locking belt 1b is arranged at the middle edge of the long and short sides of the seat edge so as to be orthogonal to each of the six upper and lower portions and sewn together, and the diagonal belt 1b and the locking belt 1b are engaged at the leading ends. The stop loops 1b1 and 1g1 are formed, the cut prevention body 1 is provided with three cuts 1d, the hook-and-loop fastener sheet 2 is sewn around the cuts, and the auxiliary sheet 3 having the hook-and-loop fastener portion 3a is attached to the hook-and-loop fastener sheet. 2 is detachably attached.
[Selection] Figure 3

Description

  The present invention is mainly intended for construction in vertical vertical communication spaces where elevators for multi-storey concrete buildings are installed (wires, signal lines, electric appliances are placed on the inner walls of the communication space, fittings and components are attached, and wall painting work is performed. When installing metal fittings / members around the entrance / exit opening of each floor, etc., even if fallen objects (pliers, nails, bolts / members, etc.) fall, they will be received before they fall, causing personal injury or damage. It relates to a fall prevention sheet for the construction of the vertical communication space to prevent.

Conventionally, in building construction work, drivers, hammers and other equipment held by persons working above, or members attached above, cut and separated members, bolts and nuts, etc. fall downward, resulting in personal injury, other members Had caused an accident of damage.
As a method for preventing this, in the case of exterior work outside the building, each stage is attached to the building frame outside each stage of the external scaffolding so that the sheet frame body projects horizontally. In this case, the fallen object is prevented from falling down and down (see JP-A-8-28029).
However, this fall prevention method cannot be used because there is no base for attaching the seat frame in the vertically long vertical communication space in the building.
Conventionally, in the case of elevator installation work in a vertically long space in the building where the elevator is installed, a rope stopper was placed on the wall surface of the vertically long space or on the floor space of the elevator entrance and attached to the fall prevention net. The rope was moored to the rope stopper and the fall prevention net was stretched.
However, in this fall prevention by the net, small fallen objects such as bolts and nails slip through the mesh and fall, which is insufficient for the fall prevention. Furthermore, it did not have sufficient strength to accept a large fallen object of 40-50 kg.
In addition, when this fall prevention net is stretched for safety reasons at a predetermined interval in the vertical direction (for example, every floor), if there is a vertical member that is long in the vertical direction, the net cannot be penetrated and the vertical member is installed. There was a drawback that it was difficult. Also, it is difficult to move and transport articles and people up and down, and when a hole or opening is made in the net to avoid this, there is a problem that a fallen object falls from the hole or opening and a danger remains.
JP-A-8-28029

  The problem to be solved by the present invention is to solve these conventional problems, allow the penetration of vertical members and the movement of articles and people, have a high tensile strength and can prevent falling objects reliably To provide a sheet.

The configuration of the present invention that solves this problem is as follows.
1) A diagonal belt having a locking loop formed at least two ends in the diagonal direction between a pair of upper and lower sheets of high tensile strength is disposed, and a peripheral edge having a tensile strength along the outer peripheral edge of the sheet between the sheets. A belt is arranged, and further, a locking belt having a locking loop at the tip is arranged at a plurality of positions on the periphery between the upper and lower sheets, and the diagonal line so that each locking loop of the diagonal belt and the locking belt is exposed to the outside. A belt, a peripheral belt, and a locking belt are sewn to the upper and lower sheets with high tensile strength sewing thread to produce a fall prevention sheet main body, and a plurality of cuts extending from the required peripheral edge of the fall prevention sheet main body toward the center Provided, the edge belt is sewn with a high tensile strength thread along each incision edge of the incision, and a hook-and-loop fastener is provided in a region having a predetermined width on both sides of the incision of the fall prevention sheet main body. A fall-proof sheet for building construction that is provided with a hook-and-loop fastener on the bottom surface of a separate auxiliary sheet that covers the wall, and the auxiliary sheet is detachably attached with each hook-and-loop fastener so as to cover the cut of the fall-proof sheet body 2) Provided at a short interval, the auxiliary sheet is detachably covered with a hook-and-loop fastener on each of the adjacent cuts and the peripheral area, and an opening penetrating vertically can be formed between the cuts by removing the auxiliary sheet. 1) The fall prevention sheet for construction as described in 1) 3) The fall prevention sheet for construction as described in 1) to 3), wherein the sheet is produced by weaving polypropylene yarn.

The anti-drop sheet of the present invention is integrated with two or more diagonal belts with tensile strength between the upper and lower sheets, and a peripheral belt on the outer periphery of the sheet and stitched together, so it is highly tensile. It has strength and shear strength, and can catch falling objects with little damage. In particular, high tensile strength and shear resistance can be ensured by making a polypropylene thread made of cedar twill, and in addition to falling objects such as bolts and nuts, it can receive falling objects of about 40 to 50 kg of heavy members. it can. Moreover, since it is a sheet | seat, it can prevent falling of the small articles | goods of a volt | bolt and a nut, and can fall below.
Furthermore, since a cut is provided in the fall prevention sheet main body and the auxiliary sheet is detachably covered with the cut, the member that vertically penetrates the fall prevention sheet can be passed through the cut by removing the auxiliary sheet. Also, wide cross-sectional penetrations, parts, tools, or workers can open up the area between the cuts by removing the auxiliary sheet to ensure the vertical penetration and vertical movement opening, allowing vertical penetration and vertical movement. Yes.

As the sheet having tensile strength, a sheet produced by weaving polypropylene yarn is preferable in terms of strength and shear resistance.
Nylon or polyester can be used as the material for the diagonal belt, peripheral belt, and edge belt with tensile strength.
As the sewing thread having a tensile strength, a polyamide fiber (for example, Kepler sewing thread (trade name: sold by DuPont)) is preferable.

Embodiment 1 of the present invention will be described below with reference to the drawings.
The present Example 1 is a fall prevention sheet in the installation work of an elevator for a concrete building. As a sheet used for this, we used a 3.1m x 3.9m rectangular woven fabric made of polypropylene yarn and stacked two sheets on top, one on top of the other, and used as a diagonal belt, peripheral belt, and edge belt. Three nylon belts are used, and Kepler sewing thread (trade name) is used as the sewing thread. The cut line is one place on the right side and a distance of 92 cm on the left side, and 85, 88, 108 cm in two places. The one with the length is provided, and an edge belt in which two nylon belts are stacked is sewn along the cut line. A 90 × 60 cm auxiliary sheet is attached to the right cut, and 60 × 90 cm and 60 cm × 110 cm auxiliary sheets are attached to either the upper surface or the lower surface of the fall prevention sheet main body with a hook-and-loop fastener. The two diagonal belts are arranged in the diagonal direction of the seat, and the locking belts are provided at six locations on the upper and lower surfaces of the seat. One locking belt is provided on the right long side periphery of each of the upper and lower surfaces, three on the left long side periphery, and one on each short side periphery. This is an example in which a locking loop is formed at the ends of the diagonal belt and the locking belt so as to be exposed to the outside.

FIG. 1 is a plan view showing a sheet of Example 1. FIG.
FIG. 2 is a plan view showing the seat body of the first embodiment.
FIG. 3 is a plan view of the fall prevention sheet for building work of Example 1. FIG.
FIG. 4 is an explanatory view showing an attachment state of the locking loop of the diagonal belt.
FIG. 5 is an explanatory view showing an attachment state of the locking belt.
FIG. 6 is an explanatory diagram illustrating a state in which the vertical communication space of the elevator installation according to the first embodiment is attached to a concrete inner wall surface.

In the figure, S is a vertically long vertical communication space installed in an elevator, and R is a fall prevention sheet for building work of Example 1. Also, 1 is a fall prevention sheet main body, 1a is a sheet of a 3.1 m × 3.9 m rectangular woven fabric made of polypropylene thread and is made of polypropylene yarn. A total of three are used. Reference numeral 1b denotes two three-layer nylon diagonal belts arranged in a diagonal direction between the upper and lower sheets of the fall prevention sheet main body, 1b1 denotes a locking loop formed at the tip of the diagonal belt 1b, and 1c A two-layer nylon peripheral belt, 1d is a slit provided at three locations, and 1f is an edge belt arranged along the cut edge of the slit 1d. The diagonal belt 1b, the peripheral belt 1c, the edge belt 1f, and the locking belt 1g are sewn to the seat 1a with Kepler sewing thread.
In the figure, 1g is a locking belt that is added to the top end of the outer periphery of the fall prevention sheet body 1 that is sewn to the top and bottom, 1g1 is a locking loop formed at the front end of the locking belt, and 1h is dropped. It is a string hooking eyelet provided along the cut 1d of the prevention sheet main body 1. Reference numeral 2 denotes a hook-and-loop fastener sheet that is sewn to the fall prevention sheet main body 1 in the peripheral area of the cut 1d, and is sewn to both the upper and lower surfaces of the fall prevention sheet main body 1. Reference numeral 3 denotes an auxiliary sheet having an area covering the cut and the peripheral area of the cut and having a hook-and-loop fastener portion 3a attached to the hook-and-loop fastener sheet 2, and 4 is a vertical communication space S for an elevator. In order to lock to the inner wall surface of the concrete, the mounting bracket 5 fixed to the inner wall surface is detachably attached to the mounting bracket 4 with bolts 5a through the diagonal loops 1b1 and 1g1 of the diagonal belt 1b and the locking belt 1g. It is a connecting bracket for mounting.

In the first embodiment, a plurality of mounting fittings 4 are fixed to the vicinity of the inner wall surface near the entrance / exit of each floor of the vertically long vertical communication space S of the elevator installation of the multi-story concrete building B.
Next, the construction work fall prevention sheet R of the first embodiment is arranged in the vertical communication space S near the entrance of each floor, and is engaged with the locking loop 1b1 of the diagonal belt 1b of the construction work fall prevention sheet R. The locking loop 1g1 of the stop belt 1g is hung on the connecting metal 5, and the connecting metal 5 is connected to the mounting metal 4 fixed to the inner wall surface by a bolt. Accordingly, the fall prevention sheet R is stretched substantially horizontally in the vertical communication space S for each floor.

  Since the fall prevention sheet for construction work of Example 1 is provided for each floor, the work on the upper floor and the work on the lower floor can be safely performed in parallel, and workability is improved. Moreover, even if there is a fallen object, it is received by the fall prevention sheet R on each floor, and it falls only for a short distance, and the fall prevention sheet R receives it safely. In addition, the fall prevention sheet R for construction work according to the present invention has a high strength and less cuts and lacerations because a plurality of sheets 1a made of a strong polypropylene yarn made of cypress weave are stacked. The strength is further increased by the diagonal belt 1b and the peripheral belt 1c.

  Furthermore, if there is a vertical column / vertical wall / vertical pipe that penetrates the sheet, the cut 1d is opened by removing the auxiliary sheet 3 from the hook-and-loop fastener, and members such as a vertical column / vertical wall / vertical pipe are placed in the gap formed by the cut. It can be penetrated. When passing a member having a large cross-sectional area, the auxiliary sheet 3 of the two left cuts 1d can be removed and an area between the cuts can be opened. Further, this opening can be used as an entrance / exit of an operator or an entrance / exit of an up / down transfer of articles.

  The present invention can be used not only in elevator setting spaces for concrete buildings, but also in interior work in vertically long atriums, emergency escape caverns, and vertical spaces for centralized piping.

3 is a plan view showing a sheet of Example 1. FIG. FIG. 3 is a plan view showing a sheet main body of Example 1. It is a top view of the fall prevention sheet for construction of Example 1. FIG. It is explanatory drawing which shows the attachment state of the locking loop of a diagonal belt. It is explanatory drawing which shows the attachment state of a latching belt. It is explanatory drawing which shows the attachment state to the concrete wall surface of Example 1. FIG.

Explanation of symbols

R Fall prevention sheet for building work S Vertical communication space Sa Inner wall surface 1 Fall prevention sheet body 1a Sheet 1b Diagonal belt 1b1 Locking loop 1c Peripheral belt 1d Cut 1f Edge belt 1g Locking belt 1g1 Locking loop 1h Eyelet hole 2 Fastener sheet 3 Auxiliary sheet 3a Surface fastener part 4 Mounting bracket 5 Connecting bracket 5a Bolt

Claims (3)

  A diagonal belt having a locking loop formed on at least two ends in the diagonal direction is disposed between a pair of upper and lower sheets having high tensile strength, and a peripheral belt having tensile strength is provided along the outer peripheral edge of the sheet between the sheets. A locking belt having a locking loop at the tip at a plurality of positions on the periphery between the upper and lower sheets, and a diagonal belt so that each locking loop of the diagonal belt and the locking belt is exposed to the outside. The peripheral belt and the locking belt are sewn to the upper and lower sheets with high tensile strength sewing thread to produce a fall prevention sheet main body, and a plurality of cuts extending from the required peripheral edge of the fall prevention sheet main body toward the center are provided. The edge belt is sewn with a high tensile strength thread along each incision edge of the incision, hook-and-loop fasteners are provided in areas of a predetermined width on both sides of the incision of the fall prevention sheet body, and the incision and the area are covered. The surface fastener provided on the bottom surface of the auxiliary sheet separate, fall prevention sheets have auxiliary sheet at each of the surface fastener detachably attached construction work for fall prevention sheets were to cover the cuts of the body.   Cuts are provided at short intervals, and an auxiliary sheet is detachably covered with a hook-and-loop fastener on each of the adjacent cuts and the surrounding area, and an opening penetrating vertically can be formed between the cuts by removing the auxiliary sheet. The fall prevention sheet for building construction according to claim 1.   The fall prevention sheet for building construction according to claim 1, wherein the sheet is produced by weaving polypropylene yarn.

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