JPH02240378A - Safety device for roofing work - Google Patents

Abstract

PURPOSE:To prevent the falling down of workers by a method in which a vertical bar is risen from the lower end of a sloped bar to be set on roof to form a base frame, and a horizontal bar to be attached with a protective netting is set between the base frames. CONSTITUTION:Base frames 3 having a sloped bar 3a and a vertical bar 3b which are connected with each other are set on the rafter portion 20 of a roofing 2, and tiles 22 are removed from a fitting plate 7 position fixed to the bar 3a. Nails 25 are driven into the rafter 20 through the nail holes of the plate 7 to fix the base frames 3 to the roofing 2. Horizontal bars 4, 5, 15 and reinforcing bars 6 are attached to the frames 3, and a protective netting 17 is laid between the uppermost horizontal bar 4 and the lowermost bar 15.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a safety device installed on a roof to prevent workers from falling.

[Conventional technology] During roofing work in new construction, the safety of workers is ensured by installing protective shelves and scaffolding around the entire building, but for example, when re-roofing old tiles, etc. There are no suitable scaffolding or safety equipment, so workers are instructed to carry out the work with a lifeline attached to their waist.

[Problems to be Solved by the Invention] However, in the conventional work method described above, the lifeline easily gets caught in other articles such as roof tiles, resulting in poor workability. For this reason,
They often worked without a lifeline, which was dangerous.

In view of the above circumstances, the present invention provides a safety device for roofing work that is inexpensive and easy to handle.

[Means for Solving the Problems] In order to solve the above problems, the present invention employs the following configuration.

That is, the safety device according to the present invention includes a base frame having an inclined rod part disposed on the roof along the slope of the roof and a vertical rod part rising from the lower end of the inclined rod part, and a base frame that is spaced apart from each other. A horizontal bar is installed between a plurality of arranged base frames to which a protective net is attached, and a nail hole is provided at the upper end of the base frame for inserting a nail to be driven into a roof rafter. It is characterized by

[Operation] Tiles are removed from the part of the roof where the rafters are located, and nails are driven through the nail holes at the upper end of the base to fix the base to the roof, and a protective net is placed on the vertical rods of the base. Even if a worker slips on the roof, the protective net prevents them from falling.

[Embodiments] Hereinafter, embodiments of the present invention shown in the drawings will be described.

This safety device 1 is installed on a roof 2, and includes a plurality of main components 3. -..., upper and lower horizontal bars 4, 5.15, and reinforcing bars 6, which are attached in an X-shape between the mutually adjacent trunks 2, 2. - Equipped with -. The trunk 3 includes an inclined rod part 3 placed on the roof along the slope of the roof 2 as shown in FIG.
a, and a vertical bar portion 3 rising vertically from the lower end of the inclined bar portion.
b is formed into a roughly ■ shape in side view, and its inclined rod portion 3
A mounting plate 7 is fixed to the upper end of a. The mounting plate 7 is formed into a bent shape having a horizontal part 7a and an inclined part 7b,
A nail hole 8 is bored in the inclined portion 7b.

The nail hole 8 has a large diameter portion 8a with a lower end having a larger diameter than the nail head.
, and the upper part is the elongated hole part 8b with a diameter smaller than the head of the nail.
It becomes. In addition, an inclined rod portion 3a is provided at the intermediate portion of the base frame 3.
Reinforcing members 10 and II are provided to connect the vertical bar portions 3b and 3b.

The upper and lower horizontal bars 4.5 are installed by protruding from appropriate positions on the base frame 3 using bins (for example, commercially available Gravity Lock PG type) 13. −・
It is attached to the base frame 3 by. That is, horizontal bar 4.
There are bottle holes + 4.・・・
* is bored, and by inserting the main attachment bottle 13 into this bottle hole and bending the tip 13a of the bottle 13, it is fixed in a state that prevents it from coming off. By straightening the bottle 13 and pulling it out from the bottle hole, the horizontal bars 4 and 5 can be removed from the base frame 3.

Also, the reinforcing bar 6 is attached to the bin 1 in the same way as the horizontal bar 4.5.
3, it can be detachably attached to the main body.

A lowermost horizontal bar 15 is provided below the lower horizontal bar 5 and is attached to the inclined bar portion 3a of the base frame 3 with a pin 13. A protective net 17 made of, for example, synthetic resin fibers is stretched between this horizontal bar 15 and the upper horizontal bar 4.

When using this safety device, the base frame 3 is placed on a portion of the roof 2 where the rafters 20 are located. In this case, the roof tile 22 is removed from the part where the mounting plate 7 is located, and a nail 25 is driven into the rafter through the small diameter part 8a of the nail hole 8 to fix the base frame 3 to the roof. Preferably, the nails 25 are long enough to pass through the rafters 20 and reach the main building 27. Moreover, it is preferable that the interval between the base frames 3 is about the width of seven roof tiles (~1855 mm), for example. Core number of required numbers 3. - After fixing the horizontal bar 4.5.15 to the roof. Reinforcement rod 6. -, etc. are attached to the trunk, and a protective net 17 is stretched between the horizontal bar 4 at the top and the horizontal bar 15 at the bottom. The protective net 17 may be tied to the horizontal bar 4 at its upper edge and to the horizontal bar 15 at its lower edge with a string, or by attaching a dedicated hook to the net in advance and attaching it to the horizontal bar with this hook. good.

If this safety device 1 is provided all around the roof, even if a worker slips while working, the protective net will stop the worker from falling.

When removing the safety device after the work is completed, remove the protective net, horizontal bars, reinforcing bars, etc. from the base frame 3 (in some cases, it may not be necessary to remove them), and move the base frame 3 upward along the slope of the roof. Push up slightly.

Then, the nail 25 comes to the position of the large diameter part 8a (larger than the head of the nail) of the nail hole 8, so the base frame can be removed from the roof by simply pulling it up. In this way, this safety device is extremely easy to attach and detach.

In addition, the base frame 3, the horizontal bar 4. 5. +5. The reinforcing rod 6 and the like may be made of pipe materials such as steel pipes and aluminum pipes, synthetic resin, and the like. In addition, in terms of dimensions, the base frame 3 is, for example, φ34X.
2.3 t, the horizontal bar, reinforcing bar, etc. are, for example, φ21.
7×1.9 t can be used, but is not limited thereto.

[Effects of the Invention] As is clear from the above description, the safety device according to the present invention is structurally simple, easy to attach to and remove from the roof, and can effectively prevent workers from falling. It turned out to be excellent.

[Brief explanation of drawings]

FIGS. 1 and 2 are front and side views of one embodiment of the present invention, and FIGS. 3 and 4 are enlarged views of essential parts thereof. 1...Safety device 2...Roof 3...Base frame 4
, 5.15... Horizontal bar 6... Reinforcement bar 17... Protective net

Claims (1)

[Claims] (1) A base frame having an inclined bar part arranged on the roof along the slope of the roof and a vertical bar part rising from the lower end of the inclined bar part, and a plurality of base frames arranged at intervals. and a horizontal bar to which a protective net is attached. Safety device.