JP2003056182A - Safety net mounting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device simple with sufficient strength and easy to use for protecting a worker working in a high place, from a fall accident in the construction work of a wooden building, particularly erection construction work. SOLUTION: This safety net mounting device is manufactured of material with high strength and high durability such as stainless steel and machined in the bent state of both sides of a plate. Reinforcing members 3 with sufficient strength are mounted to the inside of four corners of a device body 1, and a safety net hanging hook 4 of high strength for hanging the net is mounted to the outside on the long-side bent material side of the device body 1. The safety net hanging hook 4 is mounted with a rope protecting member 5 using a vinyl pipe or the like so as not to damage the safety net when hanging the net. A device attaching/detaching bar insert pipe 6 for inserting a device attaching/detaching bar 8 is mounted below the safety net hanging hook 4. The device is hung on a girder or the like to stretch the net.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
A safety net used to prevent a casualty accident caused by the fall of a worker working at a high place during wooden construction work (1
The invention relates to a safety net attaching device for attaching 1) to a material such as a girder of a building, and a manufacturing method thereof.

[0002]

2. Description of the Related Art In the conventional wooden construction work, in the construction work (the initial stage construction work for building pillars, crossing girders, etc., and building the frame and roof structure)
Safety nets (11) (below "net") near the lower part of the work floor on the second floor and the lower part of the work place such as the roof in order to prevent the accident of a worker who is working at a high place such as a floor. The work was rarely done. The reason is that the internal structure of a wooden house is subdivided into 6 tatami mats, 8 tatami mats, corridors, etc., and there are pillars and wall materials in each partition part, so in order to stretch the net (11) for the above purpose You have to put up one net for each room or section, so if you use the net in the construction work of a general wooden house, you need to put about ten nets even if the building area is small. If it is large, it may be 20 or more. Further, in order to stretch the net, it is necessary to tie the tight-tie ropes attached to the four corners of the net (11) to the girders (12) on the second floor, and for that purpose, the girders (2nd floor) etc. ) Must be carried out in a dangerous manner or by a similarly dangerous method of riding a stepladder or the like from the ground. The net (11) tension is applied to all places by the above method, and it takes about 1 to 2 hours to remove the net again after the work is completed. Because of troublesome things,
The reality is that most businesses do not use the internet. Several kinds of metal fittings for hanging the net (11) on the girder (12) have been developed, but some kinds are
It is necessary to screw about 80 to 120 metal fittings per construction and use it. On the other hand, the other ones, which require a great deal of labor and danger at the time of desorption work, are poor in practicality, and the fact is that these are hardly used.

[0003]

In the conventional wooden construction work, a worker who is working on the girders (12) on the second floor or the like (12) during the erection work has been damaged by the fall. There are many fatal accidents, but a simple device with sufficient strength and easy to use to stretch the net (11) used to prevent the accident has not been developed. Therefore, there was a problem that the net (11) was not stretched in spite of the above-mentioned highly dangerous work.

The present invention is a simple, efficient and efficient operator for constructing a net (11) below a work site where there is a risk of a fall on the second floor or the like in the construction work of wooden construction work. The purpose of the present invention is to obtain a device having sufficient strength to withstand the impact even if it crashes onto the net (11).

[0005]

[Means for Solving the Problems] and

BEST MODE FOR CARRYING OUT THE INVENTION In order to achieve the above object, the safety net attaching device of the present invention requires sufficient strength and durability, and therefore is made of a material having high strength and high durability such as stainless steel. "7" shown in Fig. 1 is manufactured, and both sides of the plate are bent (2) if necessary to further increase the strength.
In addition, a reinforcing material (3) having sufficient strength is attached to the inside of the four corners of the device body (1) as necessary, and a safety net suspension hook (4) is formed.
The structure will be attached. As shown in FIG. 2, this is hung on the girders (12) and stretched over the net (11), and if the worker falls onto the net (11), be sure to hold it by the net (11), The purpose is to protect the worker from a crash and to make the net tensioning work simple, efficient and reliable.

A safety net suspension hook (4) having sufficient strength for hanging the net (11) on the outside of the long side bending member side (1a) of the main body of the apparatus is attached, and the hook (4) is attached.
If necessary, a rope protection material (5) using a vinyl pipe or the like is attached so that the safety net (11) will not be damaged when it is hung.

On the outside of the long side bending member side of the device body, below the safety net suspension hook (4), a device detaching rod inserting pipe (6) for inserting the device detaching rod (8) is attached,
If necessary, a groove (7) for the rotation preventing pin for fitting the rotation preventing pin (9) of the rotation shaft of the device detaching rod (8) is provided in a part of the upper end thereof. In this case, the upper side of the pipe (6) is not at right angles to the axis of the pipe but is slightly angled to the right or left, and the groove for the rotation prevention pin is provided near the end on the larger angle side. (7) is provided, and the device detachable rod (8) is inserted into the pipe (6) and rotated to the side with a larger angle so that the device detachable rod rotation prevention pin (9) is provided in the same rotation prevention pin groove (7). The structure is to be fitted in. As one of the methods for easily fitting the pin (9) in the groove, a safety net suspension hook (4) is provided.
Adjust the distance between the pipe and the pipe (6), and use the elasticity of the rope protection material (5) to connect the pin (9) to the groove (7).
The structure is to be fitted in.

In order to directly attach the main body of the apparatus (1) to the girder material (12) located at a high place such as a girder on the second floor from the ground or the like, the apparatus detachable rod (8) having a fixed length. Is manufactured,
When hanging on a girder in a high place that is out of reach, do so. Further, when the device detachable rod rotation prevention pin (9) is attached near the upper end of the detachable rod (8) and the device detachable rod (8) is inserted into the device detachable rod insertion pipe (6), it is attached to the device body (1). On the other hand, it prevents the detachable rod (8) from freely rotating, and when the detachable rod (8) is inserted into the detachable rod insertion pipe (6) and is directed downward, In order not to fall off from the attachment / detachment rod (8), etc., the attachment / detachment rod is inserted into the same pipe (6) and rotated by a certain angle to provide a rotation prevention pin provided at a part of the upper end of the device attachment / detachment rod insertion pipe (6). The structure is to be fitted in the groove (7). Furthermore, a net hook (9) is provided near the top of the device detachable rod (8).
a) is attached to facilitate the attachment and detachment of the net, and a rubber handle is attached near the lower part to facilitate holding. In addition,
The safety net attachment device has a structure in which the device attachment / detachment rod (8) is long, and the connection fittings are attached by dividing and combining screws as necessary to facilitate transportation.

When the apparatus main body (1) is hung on a material such as a girder (12) and a net (11) is hung, the long side bending material side ( 1a)
Since a large load is applied to the corners of the device, the nuts and bolts (10) for adjusting the space are provided on the short-side bent material side (1b) of the device main body (1) so that the long-side bent material side of the device main body (1) is almost in close contact with the girder and the like.
The long side bending material side (1a) can be adjusted so as to be in close contact with the girder (12) according to the width of the girder or the like used on site.

[0010]

[Effects of the Invention] In a wooden construction work, especially in a construction work in which there are many accidents resulting in death or injury due to a fall, a net (11) is installed below a work place at a high place such as the second floor by using a safety net attachment device. By stretching, if the worker crashes, the net (11) can be surely held, and the worker can be protected from the crash accident.

The apparatus main body (1) is machined from a material having a sufficient strength in the shape of the numeral "7" as shown in FIG. 1, and a part such as a hook for hanging a net is provided with an easily usable function. By using the provided safety net attaching device, the net (11) can be used quickly and with peace of mind, so that the net will be used, and the net has not been installed until now. It is possible to reliably prevent a fall accident due to a thing.

The material used for the apparatus is made of stainless steel or the like having high strength, and is processed into a state (2) in which both sides of the material are bent, and a reinforcing material ( By attaching 3) to increase the strength, the size and weight can be reduced, and as a result, the handling operation, the transportation method, and the like are facilitated, and the utilization is facilitated.

A safety net suspension hook (4) having sufficient strength on the outside of the long side bending member side (1a) of the device body (1).
By attaching the, the net (11) can be hung and removed with one touch, and the time required to tie and untie the net rope to the girder material (12) as in the past can be greatly shortened. Further, by attaching the rope protection material (5) to the hook (4), the net is less likely to be damaged when the net is hung on the hook, particularly when a heavy load is applied by an operator such as falling. thing.

A device attaching / detaching rod insertion pipe (6) is attached below the safety net suspension hook (4) outside the long side bending member side (1a) of the device body, and the device attaching / detaching rod (8) is inserted into this. The device main body (1) and the net (11) can be attached to a girder or the like at a high place from a low place such as the ground with one touch, and the time required for the net tensioning work can be significantly reduced. Further, a groove (7) for the device detachment rod rotation preventing pin of the device detachable rod (8) is provided at a part of the upper end thereof, and the device detachable rod rotation preventing pin (9) is fitted therein, so that the device detachable rod is attached to the detachable rod. It is also good in handling and safety because it prevents the device from rotating freely, and the device body does not fall off from the detachable rod when facing downward with the device detachable rod inserted in the device body. thing. In addition, the upper side of the pipe (6) is slightly angled, a groove (7) for the rotation preventing pin is provided near the end on the side where the angle is large, and the device attaching / detaching rod (8) is attached to the pipe (6). As a method for inserting the device detachable rod rotation prevention pin (9) into the groove for the rotation prevention pin by rotating it to the side with a large angle and easily fitting the pin into the groove, the protective material ( By using the elasticity of 5) and using the mechanism to fit the same pin in the same groove, the locking operation between the device main unit and the device removable rod can be done easily.

The apparatus main body (1) is attached to a material located at a high place (12) such as a girder on the second floor from the ground or the like, by using a device attaching / detaching rod (8) of a certain length, so that the net tension Work can be done at one touch in a safe place such as on the ground, and workability and safety have improved sufficiently.

When the device body is used by hanging it on a material such as a girder,
Since the long side bent material side of this equipment is in close contact with the girder, etc., the structure is such that nuts and bolts for material width adjustment can be attached to the short side bent material side of the device body, so the material width of the girder etc. It has the function of being able to be used according to the requirements and having sufficient strength regardless of the width of the material.

Also, in the recent construction work, it is often the case that the floorboard is temporarily placed at the stage when the girder set on the second floor is completed, but even in this case, as in the example shown in FIG. This device has a function that allows easy removal.

[Brief description of drawings]

FIG. 1 is a perspective view of a safety net mounting device seen from a rear side thereof.

FIG. 2 is a perspective view showing an example of use of a safety net mounting device at a construction site.

FIG. 3 is a perspective view showing an example of removing a safety net mounting device at a construction site.

[Explanation of symbols]

1 device body 1a Long side bending material side 1b Short side bending material side 2 Both sides of the material are bent 3 Reinforcement material 4 Safety net hanging hook 5 rope protection material 6 Device Desorption Rod Insert Pipe 7 Anti-rotation pin groove 8 Device detachable stick 9 Device detachable rod rotation prevention pin 9a Net hanging 9b handle 9c Connection bracket 10 Spacing adjustment nuts and bolts 11 safety net 12 digits and beams 13 pillars 14 floor board

Claims (5)

[Claims] 1. A safety net (11) used by a worker to prevent a fall from a high place in a construction work or the like,
It is shown in the device main body (1) of FIG. 1 using a high-strength material such as stainless steel in order to easily and securely and safely attach and detach it to a girder (12) under construction. Bending into such a shape, and if necessary to further increase the strength, it is processed into a state (2) in which both sides of the material are edge-bent, and
A safety net attaching device for attaching or using a reinforcing material (3) and parts shown in the following claims 2 to 5 inside four corners. 2. The long side bending member side (1a) of the device body (1)
A safety net suspension hook (4) for hanging a safety net is attached to the outside of the, and if necessary, a rope protective material is used to prevent the net from being damaged when the safety net (11) is hung on the hook (4). Safety net attachment device with (5) attached. 3. The long side bending member side (1a) of the device body (1)
On the outside of the lower part of the safety net hanging hook (4), a device attaching / detaching rod insertion pipe (6) for inserting the device attaching / detaching rod (8) is attached, and if necessary, a device attaching / detaching rod (8) is attached to a part of its upper end. A device for attaching a safety net, which is provided with a groove (7) for the rotation preventing pin for fitting the rotation preventing pin (9) of the device detaching rod. In this case, the device detachable rod insertion pipe (6)
The upper side is not at right angles to the axis of the pipe (6) but is slightly angled to the right or left, and a rotation prevention pin groove (7) is provided near the end on the larger angle side. Structured, device detachable rod (8). A safety net attaching device having a structure in which the device attaching / detaching rod rotation prevention pin (9) is inserted into the pipe (6) and rotated to the side with a large angle to fit in the rotation prevention pin groove (7). As one of the methods for easily fitting the device attachment / detachment rod rotation prevention pin (9) into the rotation prevention pin groove (7), the space between the suspension hook (4) and the pipe (6) is adjusted. , A safety net mounting device having a structure in which the device detaching rod rotation prevention pin (9) is fitted into the rotation prevention pin groove (7) by utilizing elasticity of the protective material. 4. A device attachment / detachment rod (8) having a fixed length for directly attaching the main body (1) of the device to a material at a high place such as a girder (12) on the second floor from the ground or the like. If the height is out of reach, this is done. Further, when the device detachable rod rotation preventing pin (9) is attached near the upper end of the detachable rod and the device detachable rod (8) is inserted into the device detachable rod insertion pipe (6), the device main body (1) is detached and attached. The rod (8) is prevented from freely rotating, and when the device detachable rod (8) is inserted into the device body (1) and is directed downward, the device detachable rod (8) causes the device detachable rod (8) to move downward. In order not to slip out of the device, the device detachable rod (8) is inserted into the device detachable rod insertion pipe (6) and rotated by a certain angle so that the device detachable rod rotation prevention pin (9) is attached to the device detachable rod insert pipe (6).
Safety net mounting device with a structure that fits in a groove (7) for rotation prevention pin provided at a part of the upper end of the. Furthermore, a net hook (9a) is attached near the top of the device attaching / detaching rod (8) to facilitate the attachment / detachment of the net, and a rubber handle (9b) is attached near the bottom to facilitate holding. The safety net attachment device has a structure in which the device attachment / detachment rod (8) is long, and the connection fittings (9c) are attached by dividing and combining screws if necessary to facilitate transportation. 5. The short side of the device body so that the long side bending material side (1a) of the device is almost in close contact with the girder when the device body (1) is hung on a material (12) such as a girder. Bending material side (1b)
Install the nuts and bolts (10) for adjusting the gap to
A safety net attachment device that can be adjusted according to the width of materials (12) such as girders.