JP6230929B2 - Safety equipment for folded plate roof - Google Patents

Description

  The present invention relates to a safety facility used when various operations are performed on a roof surface of a folded plate roof.

  Conventionally, when performing work on the roof surface of a folded-plate roof, safety equipment for preventing fall and for curing the fall is installed in the vicinity of the eaves. As this kind of safety equipment, Patent Document 1, Patent The thing of literature 2 is known.

  These safety devices for folded-plate roofs in Patent Document 1 and Patent Document 2 have a support stand standing on the roof surface of the folded-plate roof in a self-supporting state, and the support is supported by a support post or an oblique support from two directions, so In order to prevent this, a master rope (rope) is constructed between a pair of adjacent struts.

  On the other hand, in the safety equipment for folded-plate roofs of Patent Document 1 and Patent Document 2, since the support column and the diagonal support are used in addition to the column, the number of parts is large as a whole, and the cost is high. For example, there are problems such as complicated work and poor appearance.

  On the other hand, the applicant (inventor) of the present application combines a set of three legs of the same shape and the same size in a tripod shape, and the upper ends of these three legs can be relatively rotated and disassembled. Connected to each other to form a column, and at least one pair of columns are arranged at intervals, and the lower end of each leg is connected to the folded plate roof in a detachable manner via a fixing bracket, and arranged. We have invented a safety device for folded plate roofs in which a master rope is installed between the upper ends of these columns, and have already filed a patent application (Japanese Patent Application No. 2013-04666).

  And in this safety equipment for folded-plate roof, it can be easily installed on the roof surface of the folded-plate roof and can be easily removed, and when performing various operations on the roof surface, it is an extremely simple and inexpensive facility. Work safety can be ensured.

Japanese Utility Model Publication 1-19-1743. JP 2009-228209 A

  On the other hand, in the safety equipment for folded plate roofs by the applicant (inventor) of the present application, it may be desired to further improve the performance against fall and fall curing, particularly when preventing fall and fall. It has been desired to improve the impact relaxation performance (fall prevention performance).

  In view of the above circumstances, the present invention provides a safety equipment for a folded-plate roof that is effective and suitable for installation on the roof surface of a folded-plate roof, and in particular has excellent fall-preventing performance when preventing falling or falling. The purpose is to do.

  The safety equipment for the folded-plate roof of the present invention is a safety equipment installed on the roof surface of the folded-plate roof, and at least one pair of struts arranged at a predetermined interval on the folded-plate roof, A main rope erected between the upper ends of the support columns, the support column having three or more legs having the same shape and the same dimensions, and rotating the upper ends of the plurality of legs relative to each other. The lower end of the leg is removably connected to the folded plate roof via an impact absorbing member, and the column is installed on the folded plate roof. It is characterized by being.

  In the present invention, in contrast to the conventional concept of firmly joining the support to the folded plate roof and receiving the impact at the time of preventing falling or falling with the joint strength, the legs of the support are folded through the impact absorbing member. By attaching to the shock absorber, the impact absorbing member can absorb and disperse the impact when preventing the crash or falling.

  Moreover, in the safety equipment for folded-plate roofs of this invention, it is desirable that the said impact-absorbing member is a metal fitting formed in the step shape provided with the some bending part.

  In this invention, since the shock absorbing member is a stepped metal fitting having a plurality of bent portions, it behaves rigidly (or elastically deforms) without being deformed to a certain degree of impact (load), and is preset. When a large impact (load) exceeding the applied load is applied, it is possible to form the impact absorbing member so as to surely plastically deform and absorb and disperse the impact force.

  Furthermore, in the safety equipment for the folded plate roof of the present invention, a fixing bracket is attached to the folded plate roof, the shock absorbing member is attached to the fixing bracket, and the lower end portion of the leg is connected to the shock absorbing member. It is more desirable that the lower end portion of the leg body is detachably connected to the folded plate roof via the impact absorbing member.

  In this invention, the fixing bracket is attached to the folded plate roof, the impact absorbing member is attached to the fixing bracket, and the lower end portion of the leg of the support is attached to the folded plate roof via the fixing bracket and the impact absorbing member. In other words, the shock absorbing member and the leg can be easily connected to the folded plate roof by attaching the shock absorbing member to the fixing bracket removably attached to the folded plate roof, and further attaching the lower end of the leg to the shock absorbing member. In addition, the impact force can be effectively absorbed and dispersed by the impact absorbing member by being interposed between the fixing bracket and the leg of the support column. That is, it is possible to provide an excellent impact relaxation performance by interposing the impact absorbing member while suitably ensuring the workability of installing and removing the support.

  Moreover, in the safety equipment for folded-plate roofs of this invention, it is further more desirable that the said fixing metal fitting is attached to the said folded-plate roof by interposing an elastic member between the said folded-plate roofs.

  In the present invention, the impact force can be absorbed and dispersed not only by the impact absorbing member but also by the elastic member, and when the impact force is applied, the fixing member slides against the folded plate roof by the elastic member. Can be prevented, and further excellent impact relaxation performance can be imparted.

  In the safety equipment for folded-plate roofs of the present invention, the legs of the pillars are supported via impact absorbing members, in contrast to the conventional concept of firmly joining the pillars to the folded-plate roof and receiving impacts when preventing falling or falling. Since the body is attached to the folded plate roof, the shock when preventing the fall or fall can be absorbed and dispersed by the shock absorbing member.

  As a result, when the strut and the folded plate roof are firmly joined as in the prior art, a concentrated load may act on the joined portion due to impact, and breakage or breakage may occur, but in the present invention The impact absorbing member absorbs and disperses the impact when preventing a fall or fall, so there is no breakage or breakage at the joint between the support column and the folded plate roof, preventing falling off or dropping reliably and effectively. It becomes possible to do. Therefore, it is possible to provide excellent safety equipment for folded plate roofs with excellent impact mitigation performance and high reliability.

It is a figure which shows the safety equipment for folded-plate roof which concerns on one Embodiment of this invention, (a) is a general view which shows an installation state, (b) is a partial front view. It is a figure which shows the support | pillar of the safety equipment for folded-plate roof which concerns on one Embodiment of this invention, (a) is a front view, (b) is a top view, (c) respond | corresponded to the top view of (b). It is a front view (side view). It is a diagram showing a support of a safety equipment for a folded plate roof according to an embodiment of the present invention, a fixing bracket, an impact absorbing member, an elastic member, (a) is a state where the support is installed on a round goby type folded plate roof, (B) is a figure which shows the state which installed the support | pillar in the square goby type folded-plate roof. It is a figure which shows the leg of the support | pillar of the safety equipment for folded-plate roof which concerns on one Embodiment of this invention, (a) is a front view, (b) is a left view, (c) is a right view, d) is a top view, (e) is a bottom view, and (f) is a cross-sectional view (f-f line view in (a)). It is an expanded view which shows the leg of the support | pillar of the safety equipment for folded-plate roof which concerns on one Embodiment of this invention. It is a figure which shows the state which piled up the leg of the support | pillar of the safety equipment for folded-plate roof which concerns on one Embodiment of this invention, (a) is the whole figure which shows the state installed horizontally, (b) is sectional drawing. is there. It is a figure which shows the impact-absorbing member of the safety equipment for folded-plate roof which concerns on one Embodiment of this invention, (a) is a perspective view, (b) is sectional drawing. It is a figure which shows the condition of the demonstration experiment (case 1) using the safety equipment for folded-plate roof which concerns on one Embodiment of this invention, (a) is a front view, (b) is a top view, (c) is It is a side view. It is a figure which shows the condition of the demonstration experiment (case 2) using the safety equipment for folded-plate roof which concerns on one Embodiment of this invention, (a) is a front view, (b) is a top view, (c) is It is a side view. It is a perspective view which shows the example of a change of the safety equipment for folded-plate roof which concerns on one Embodiment of this invention.

  Hereinafter, with reference to FIGS. 1-9, the safety equipment for folded-plate roof which concerns on one Embodiment of this invention is demonstrated.

  Here, the safety equipment (safety equipment for folded plate roof) A of the present embodiment is used in the vicinity of the eaves as a measure for preventing falling and curing when performing various operations on the roof surface of the folded plate roof 1. As shown in FIG. 1 (a), a pair of two support columns 2 are installed at an appropriate interval, and a master rope 9 is installed between the upper ends of these support columns 2. ing.

  Specifically, as shown in FIGS. 1A and 2A to 2C, the safety equipment A of the present embodiment includes a set of three legs 3 having the same shape and the same dimensions as the support column 2. Are combined in a tripod shape, and the upper ends of these legs 3 are connected so as to be rotatable relative to each other and disassembled.

  Moreover, the safety equipment A of the present embodiment, as shown in FIG. 1 (a), FIG. 3 (a), and FIG. And a shock-absorbing member 11 that absorbs and disperses the impact force (load) applied to the safety equipment A (post 2) and relaxes external force transmitted from the post 2 to the folded roof 1 I have.

  In this embodiment, the fixing bracket 8 is detachably connected to the folded plate roof 1 (in this embodiment, the goby portion 1a of the folded plate roof 1), and the shock absorbing member 11 is detachably connected to the fixing bracket 8. Then, the lower end portion of the leg 3 is connected to the shock absorbing member 11. Thus, a tripod support 2 constituted by a plurality of legs 3 is installed on the folded plate roof 1.

  In addition, as shown in FIGS. 2, 4 and 5, the column 2 of the present embodiment has each leg 3 made of a metal strip (for example, a thickness of 1 mm or more, preferably a thickness of 1.2 mm, 2. A 3 mm steel plate (a galvanized steel plate, a galvalume steel plate, etc. is preferably employable) is used as a material. Further, the leg 3 has an upper connecting piece 3b at the upper end, a lower connecting piece 3c at the lower end, and a main body 3a between the upper connecting piece 3b and the lower connecting piece 3c.

The upper connection piece 3b is formed with an upper connection hole 4 through which the connection fitting 7 is inserted. The plurality of legs 3 are connected to each other so as to be relatively rotatable and dismountable by overlapping the upper connecting pieces with each other and inserting the connecting metal fitting 7 into the upper connecting hole 4 that is communicated.
The lower connecting piece 3c is formed with a lower connecting hole 5 for connecting to the shock absorbing member.

  Further, each of the upper connecting piece 3b and the lower connecting piece 3c is set horizontally on the plate surface in the vertical direction with the three legs 3 combined in a tripod shape and installed on the roof surface of the folded plate roof 1. It is formed to be arranged. That is, the upper connecting piece 3b and the lower connecting piece 3c are formed so as to be inclined at the same angle θ1 on the opposite sides with respect to the main body 3a, and the main body 3a is inclined at a predetermined angle θ1 with respect to the vertical plane. It is formed so as to be arranged horizontally in the installed state.

  Further, the leg body 3 of the present embodiment is stiffened by folding both side edges of the main body portion 3a of the band plate to the surface side in the main body portion 3a between the upper connecting piece 3b and the lower connecting piece 3c. Ribs 6 are formed.

  In addition, the inclination angle θ1 (see FIG. 4A) of the upper connecting piece 3b and the lower connecting piece 3c with respect to the main body 3a in the leg 3 is set on the roof surface as a tripod constituted by the leg 3 as a tripod. In this case, the upper connecting piece 3b and the lower connecting piece 3c may be appropriately set so that both are in a horizontal state, and the inclination angle θ1 is not particularly limited, but is, for example, about θ1 = 120 ° (122 ° in the present embodiment). It is preferable that

Further, the angle θ2 (see FIG. 4 (f)) at which both side edges of the band plate are folded in order to form the stiffening rib 6 with respect to the main body 3a and the lower connecting piece 3c is determined by Although it may be set as appropriate so that 3c has a desired rigidity, for example, θ2 = about 120 ° (113 ° or 120 ° in the present embodiment) is preferable.
Furthermore, you may make it provide the stiffening rib 6 not only on the main-body part 3a but on the lower connection piece 3c.

If the leg 3 is shaped as described above, the tripod-shaped support column 2 can be easily assembled simply by connecting the upper ends of the legs 3 with the connecting bracket 7, and the connecting bracket 7 The column 2 can be easily disassembled into the individual legs 3 simply by removing.
Further, each leg 3 is a lightweight and compact thing of the same shape and dimensions formed using a strip as a material, and can be manufactured at low cost. By rotating the leg 3 as a fulcrum, as shown in FIGS. 6 (a) and 6 (b), the whole can be superposed on one. As a result, it can be easily carried, stored and stored, and is extremely convenient and rational.

When installing the safety equipment A of the present embodiment, as shown in FIG. 2, the three legs 3 are combined in a tripod shape, and the upper connecting pieces 3b are overlapped with each other to form the upper connecting holes 4 respectively. The column 2 as a tripod is assembled by matching the positions and inserting the connecting fitting 7 therethrough and fastening with bolts.
In addition, as the connection metal fitting 7, a general-purpose eye bolt that can also be used as a metal fitting for laying the master rope 9 as shown in the figure can be suitably adopted, but it is not necessary to limit to this, for example, a simple bolt or the like May be used for the connecting fitting 7.

  On the other hand, as shown in FIGS. 3 and 7, the impact absorbing member 11 of the present embodiment is a metal fitting formed by using a band plate as a raw material, and a fixing metal fitting connecting portion that is arranged vertically with the plate surface facing in the horizontal direction. 11a, a step portion 11b bent at a right angle from the upper end of the fixing bracket connecting portion 11a and extending in the horizontal direction, a step portion 11b bent at a right angle from the tip thereof and extended upward, and bent at a right angle from the upper end of the step portion 11b. And a leg connecting portion 11c arranged horizontally toward the head. In other words, the shock absorbing member 11 is formed in a step shape with a plurality of bent portions 11d.

  Each of the fixing bracket connecting portion 11a and the leg connecting portion 11c is formed with a bolt insertion hole 11e penetrating from one surface of the plate surface to the other surface. Furthermore, in this embodiment, the bolt insertion hole 11e of the fixing bracket connecting portion 11a is on the lower end side (free end side) of the fixing bracket connecting portion 11a, and the bolt insertion hole 11e of the leg connecting portion 11c is on the leg connecting portion 11c. It is provided at a position on the tip side (free end side).

Specifically, the impact absorbing member 11 of the present embodiment is formed by, for example, bending a plated steel plate having a thickness of 2.3 mm, the length of the fixing bracket connecting portion 11a is 35 mm, and the lateral direction of the stepped portion 11b. The length of the extending portion is 29.5 mm, the length of the portion extending above the stepped portion 11b is 31.5 m, and the length of the leg connecting portion 11c is 45 mm. Further, the bolt insertion hole 11e of the fixing bracket connecting portion 11a is 11 mm from the lower end of the fixing bracket connecting portion 11a, and the bolt insertion hole 11e of the leg connecting portion 11c is 25 mm from the tip of the leg connecting portion 11c. The center of the hole is provided.
The impact absorbing member 11 is not necessarily limited to the number and thickness of the bent portions 11d (stepped portions 11b), the positions of the bolt insertion holes 11e, and the like as in the present embodiment.

  And in the safety equipment A of this embodiment, as shown in FIG. 3, the fixing metal fitting 8 is fixed to the goby part 1a of the folded-plate roof 1, etc., and is detachably fixed. At this time, in this embodiment, the fixing bracket 8 is installed with the elastic member 12 such as a rubber sheet interposed between the fixing bracket 8 and the folded plate roof 1. Note that various general-purpose commercially available products for attaching various members to the folded plate roof 1 can be appropriately employed as the fixing bracket 8.

  Further, by inserting a bolt into the bolt insertion hole 11e and fastening a nut, the fixing bracket connecting portion 11a is connected to the fixing bracket 8, and the leg connecting portion 11c is arranged upward so that the shock absorbing member 11 is arranged. Connect to the fixture 8.

  Further, the lower connecting piece 3c of the leg 3 of the support column 2 is placed on the leg connecting portion 11c of the shock absorbing member 11, and the bolt is inserted into the bolt insertion hole 11e and the lower connecting hole 5 that communicate with each other. By fastening the nut, the shock absorbing member 11 and the leg 3 of the column 2 are connected, and the column 2 is connected to the folded plate roof 1 via the shock absorbing member 11, the fixing bracket 8, and the elastic member 12. The

  At this time, as shown in FIGS. 1 and 2, when assembling the support column 2, the legs 3 should be as equally spaced as possible in plan view (make an angle of 120 degrees with each other). B) It is preferable to position each leg 3. Further, the position of the lower connecting piece 3c of the desired leg 3 is adjusted by loosening the connecting fitting 7 connecting the upper connecting piece 3b and rotating the desired leg 3 in the horizontal plane with this part as a fulcrum. Then, the position of the lower connecting piece 3c may be aligned with the position of the leg connecting portion 11c of the shock absorbing member 11.

And the lower connecting piece 3c at the lower end of each leg 3 is removably connected to the folded plate roof 1 using the shock absorbing member 11 and the fixing bracket 8, so that the support 2 is near the eaves of the folded plate roof 1. It is installed in a self-supporting position at a predetermined position such as a position.
In addition, as for the support | pillar 2, you may select how the position (direction) of three legs 3 and a fixed location are selected with respect to the folded-plate roof 1 (the eaves edge of the folded-plate roof 1) like this embodiment. It is not necessary to limit to.

Next, as shown in FIG. 1, the master rope 9 is installed between the upper end portions of both the columns 2. At this time, when an eyebolt is used as the connection fitting 7 as described above, the master rope 9 can be installed only by being locked to the eyebolt. When other connecting metal fittings 7 are used, the master rope 9 is connected to the upper end portion of the support column 2 using appropriate metal fittings, or the master rope 9 is directly connected to the upper end portion of the support pillar 2 and connected. do it.
As a result, the master rope 9 becomes a mark that clearly indicates the position of the eaves and can contribute to prevention of the worker's crash, and the work safety when performing various work on the roof surface of the folded-plate roof 1 is sufficient. Can be secured.

  In addition, although the safety equipment A of this embodiment can ensure the safety of an operator only by installing the master rope 9 between the support | pillars 2 as shown to Fig.1 (a), FIG.1 (b) ), The net 10 for drop curing is supported by the master rope 9 and deployed between the support columns 2, and the lower edge of the net 10 is connected to the folded roof 1. Therefore, safety can be further improved.

  In addition, at least one set of two support columns 2 may be installed with an interval of, for example, about 5 m, and the master rope 9 may be installed between these support columns 2. However, when the required length of the master rope 9 is long (That is, when the extension of the eaves is long) If three or more support columns 2 are arranged at appropriate intervals along the eaves, a series of master ropes 9 are installed between them. Good.

  Further, in the safety equipment A of the present embodiment, the column 2 can be easily removed by detaching the fixing bracket 8 and the impact absorbing member 11 after the work is completed, and the removed column 2 can be removed at another place or It can be reused repeatedly at other work sites.

  On the other hand, in the safety equipment A of the present embodiment, as described above, each leg 3 of the support column 2 is installed by being connected to the folded plate roof 1 through the impact absorbing member 11 as well as the fixing bracket 8.

  For this reason, this embodiment is compared with the conventional idea that the support 2 is firmly attached to the folded plate roof 1 with only the fixing bracket 8 and joined, and the impact at the time of preventing the falling or dropping is received by the joint strength of this part. In the safety equipment A, the leg 3 of the support column 2 is attached to the folded plate roof 1 via the impact absorbing member 11, so that the impact absorbing member 11 absorbs the impact when the fall or fall is prevented. -It can disperse | distribute and the rotational moment which acts on this part can be reduced.

  At this time, since the shock absorbing member 11 is a stepped metal fitting having a plurality of bent portions 11d, it behaves rigidly (or elastically deforms) without being deformed with respect to a certain load (impact). When a large load (impact) exceeding the set load is applied, the plastic force is reliably deformed to absorb and disperse the impact force, reducing the rotational moment acting on this part, and preventing impact when falling or falling. It is possible to suitably absorb and disperse with the impact absorbing member 11.

[Example]
Here, the demonstration experiment performed in order to confirm the fall prevention performance of the safety equipment A for folded-plate roof provided with the impact-absorbing member 11 of this embodiment is demonstrated.

  First, in this demonstration experiment, safety equipment A is installed on each of the two folded plate roofs 1 of the round goby type (width 500 mm) shown in FIG. 3 (a) and the square goby type (width 500mm) shown in FIG. 3 (b). The fall prevention performance was confirmed.

For the round goby type folded plate roof 1, Dankichi W (combined with corner and round goby) manufactured by Sakata Manufacturing Co., Ltd. is used as the fixing bracket 8 between the goby portions 1 a of the folded plate roof 1. A 2 mm protective rubber sheet (elastic member 12) is attached, and a shock absorbing member 11 having a thickness of 2.3 mm is connected to the fixing bracket 8, and the leg 3 of the column 2 is attached to the shock absorbing member 11. Connected.
For the square roof type folded plate roof 1, Danyoshi H (for square goby) manufactured by Sakata Corporation is used as a fixing bracket 8 for protection with a thickness of 1.2 mm between the seam portions 1 a of the folded plate roof 1. A rubber sheet (elastic member 12) is interposed, and a shock absorbing member 11 having a thickness of 2.3 mm is connected to the fixing bracket 8, and the leg 3 of the column 2 is connected to the shock absorbing member 11.

  Also, as shown in FIGS. 8 and 9, two tripod posts 2 are installed with a span of 9.5 m, and the eyebolt fitting 7 attached to the top of each support 2 is attached to the Temporary Industrial Association. A certified unused master rope (synthetic fiber rope) 9 and a tensioner were attached, and the master rope 9 was installed so as to have an initial tension of 20 kg.

  In this demonstration experiment, as shown in FIG. 8, the case 1 in which the support column 2 is installed with one leg 3 of the folded plate roof 1 facing the eaves side (the protruding portion and the recessed portion of the folded plate roof 1 are extended). A case in which one leg 3 is installed along one direction T1 to be installed), and as shown in FIG. 9, one leg 3 of the folded-plate roof 1 is attached to the keraba side (wife side) as shown in FIG. Experiment in two cases of case 2 (case in which one leg 3 is installed along the other direction T2 orthogonal to one direction T1 in which the convex and concave portions of the folded plate roof 1 extend) Went.

  In this demonstration experiment, one end of an unused 1.7 m lanyard (safety rope) 13 is connected to the center of the master rope 9, and an 86 kg fallen body (heavy power) 14 is attached to the other end of the lanyard 13.

  And the falling body 14 was dropped freely from the folded-plate roof 1, the impact force was applied to the safety equipment A (master rope 9, the support | pillar 2) of this embodiment, and the state of each part of the support | pillar 2 after that was observed and confirmed. The experiment was repeated three times while the lanyard 13 was replaced each time.

Table 1 shows the experimental results of Case 1 in which the legs 3 are arranged on the eaves side, and Table 2 shows the experimental results of Case 2 in which the legs 3 are arranged on the keraba side.
Further, in Tables 1 and 2, the determination is based on the parent-strand qualification standard of the Temporary Industrial Association of Japan, and the height position of the connecting bracket 7 of the strut 2 is 65% or less of the height before dropping. In this case, it is determined that the column 2 is “failed”, and there is no damage or crack in each part of the column 2, and the column 2 has the shock absorbing member 11, the fixing bracket 8, the folded plate roof. When the main metal jig is not detached from the connection fitting 7 at the top of the support column 2 and when the height position of the connection fitting 7 of the support column 2 is held at 70% or more of the height before dropping. Was determined to be “pass”.

  As shown in Tables 1 and 2, the tripod support 2 is not damaged or cracked in any case, and the shock absorbing member 11 (support 2) is detached from the fixing bracket 8 and connected. There was no detachment of the master rope 9 from the metal fitting 7, and the height ratio of the support column 2 after dropping was 88.3% at the maximum, and it was confirmed that the fall prevention performance was sufficiently exhibited.

  In addition, the drop amount of the fallen body 14 was 3.45 m at the maximum, but according to the usage standards of the master rope support, the support master for the support pole, the tension device, etc. of the Temporary Industrial Association, It shall be stipulated that a vertical distance (H) (omitted) of 3.8 m or more with respect to a floor surface or equipment or the like where there is a possibility of collision shall be secured. If 8m or more is secured, it can be determined that there is no risk of colliding with the floor or equipment, etc., even if the fallen body 14 is suspended by 3.45m (the maximum amount of suspension in this demonstration experiment). In addition, it was confirmed that the fall prevention performance was sufficiently exhibited.

  Further, in the above demonstration experiment, it is more effective to arrange the shock absorbing member 11 on the side where the goby portion 1a is overlaid for the round goby type folded plate roof 1 and the square goby type folded plate roof 1. Was confirmed.

  Further, according to an additional demonstration experiment conducted in the same manner as the above demonstration experiment, in the square goby type folded board roof 1, the distance between the pair of pillars 2 is 3.5 m or more, the round goby type folded board roof 1 (and BL500 type folded board). In the roof 1), it was confirmed that sufficient fall prevention performance can be obtained by setting the distance between the pair of support columns 2 to 2.5 m or more.

  It was also confirmed that the fall-preventing performance was hardly affected by the type of baking paint on the folded plate.

  Furthermore, it was confirmed that the fall prevention performance can be obtained even for folded plates such as a roof deck that have existed for a long time. That is, it was confirmed that the safety equipment A of the present embodiment can be sufficiently applied to various folded plate roofs 1.

Here, under the same conditions as in the case 1 and case 2 of the above-described demonstration experiment, an experiment was also conducted on conventional safety equipment in which the leg 3 of the support column 2 was directly connected to the fixing bracket 8 without using the shock absorbing member 11. Yes.
And in the case where the fixing bracket 8 is attached to the labyrinth portion 1a of the folded plate roof 1 without the protective rubber sheet (elastic member 12) interposed, and the leg 3 of the tripod column 2 is connected to the fixing bracket 8. As the impact force is applied, the leg 3 of the support 2 is broken or the fixing bracket 8 is detached, so that the support 2 is dropped from the folded plate roof 1, and the fall prevention performance like the safety equipment A of the present embodiment. There was a case that could not be obtained.

  Further, in the case where the fixing bracket 8 is attached to the gob portion 1a with a protective rubber sheet (elastic member 12) interposed therebetween, and the leg 3 of the tripod support 2 is connected to the fixing bracket 8, the impact force is applied to the protective rubber. Although it was confirmed that the sheet 12 can absorb and disperse and the sliding of the fixing bracket 8 with respect to the folded plate roof 1 is prevented, the impact force is applied and the leg 3 of the support column 2 is broken. As a result, it was confirmed that the fixing bracket 8 was detached, and satisfactory fall prevention performance was not obtained.

  Further, even when a demonstration experiment is performed using a four-legged support column 2 having four legs 3, the shock absorbers 11 are not provided, and each leg 3 is attached to the folded plate roof 1 with the fixing bracket 8. Since it was connected, it was also confirmed that an impact force was applied, the leg 3 of the support 2 was broken, and the fixing bracket 8 was slipped or detached.

  Therefore, in the safety equipment A for the folded-plate roof of the present embodiment, the shock absorbing member is compared with the conventional idea of receiving a shock when the support 2 is firmly joined to the folded-plate roof 1 to prevent the falling or falling. Since the leg 3 of the support column 2 is attached to the folded plate roof 1 via 11, the impact absorbing member 11 absorbs an impact (such as a rotational moment generated at the time of falling) when preventing the fall or falling. It is possible to disperse (decrease), and it is possible to prevent breakage, breakage, and the like at the joint portion between the support column 2 and the folded plate roof 1, and to reliably prevent dropping or dropping. Therefore, it is possible to provide the safety equipment A for the folded-plate roof having high impact relaxation performance and thus fall prevention performance and high reliability.

  Furthermore, in the safety equipment A for the folded-plate roof of this embodiment, the fixing bracket 8 is attached to the folded-plate roof 1, the impact absorbing member 11 is attached to the fixing bracket 8, and the lower end portion of the leg 3 of the support column 2 is attached. By attaching to the folded plate roof 1 via the fixing bracket 8 and the shock absorbing member 11, that is, to the fixing bracket 8 detachably attached to the folded plate roof 1, the shock absorbing member 11 and further to the shock absorbing member 11. By attaching the lower end of the leg 3, the shock absorbing member 11 and the leg 3 can be easily connected and attached to the folded plate roof 1, and interposed between the fixing bracket 8 and the leg 3 of the column 2. By providing, the impact absorbing member 11 can effectively absorb and disperse the impact force. That is, it is possible to provide excellent impact relaxation performance by interposing the impact absorbing member 11 while suitably ensuring the workability of installing and removing the support column 2.

  Further, if the fixing bracket 8 for attaching the impact absorbing member 11 is attached to the folded plate roof 1 via the elastic member 12, the impact force can be absorbed and dispersed by the elastic member 12 in addition to the impact absorbing member 11. Furthermore, it is possible to prevent the fixing bracket 8 from slipping with respect to the folded plate roof 1. As a result, it is possible to more reliably prevent breakage and breakage at the joint portion between the support column 2 and the folded roof 1 and provide excellent impact mitigation performance to prevent dropping and dropping, and thus fall prevention performance. Therefore, it is possible to provide a highly reliable safety equipment A for folded-plate roofs.

  As mentioned above, although embodiment of the safety equipment for folded-plate roof by this invention was described, this invention is not limited to said one Embodiment, It can change suitably in the range which does not deviate from the meaning.

For example, as shown in FIG. 10, two columns 2 are used as a set, these columns 2 are connected by a brace 20 to form a column frame 21, and the master rope 9 is at least between a pair of column columns 21. May be constructed, and a safety equipment may be configured by appropriately attaching a net.
And also in this case, the same effect as this embodiment is obtained by detachably connecting the lower connecting piece 3c of each leg 3 of each support column 2 to the folded plate roof 1 via the shock absorbing member 11. It is possible to obtain.

Further, in this case, each column base 21 is configured in a form of two tripods with two columns 2, that is, a total of six legs 3. It can be securely installed.
Furthermore, if the length of the arm 20 is made sufficiently long, the main rack 9 and the net 10 can be installed at the eaves position after the support rack 21 is installed at a position sufficiently away from the eaves. It is possible to safely perform work and removal work at a position away from the eaves.

DESCRIPTION OF SYMBOLS 1 Folded plate roof 1a Haze part 2 Support | pillar 3 Leg body 3a Main body part 3b Upper connection piece 3c Lower connection piece 4 Upper connection hole 5 Lower connection hole 6 Stiffening rib 7 Connection metal fitting 8 Fixing metal piece 9 Parent rope 10 Net 11 Shock absorption member 11a Fixing bracket connecting portion 11b Stepped portion 11c Leg connecting portion 11e Bolt insertion hole 12 Elastic member 13 Lanyard 14 Falling body (heavy power)
20 Arm 21 Support column A Safety equipment for folding plate roof

Claims (4)

Safety equipment installed on the roof surface of the folded-plate roof,
Comprising at least one pair of struts arranged at a predetermined interval on the folded plate roof, and a master rope constructed between upper ends of the struts,
The support column includes three or more legs having the same shape and the same dimensions, and the upper ends of the legs are connected to each other so as to be rotatable relative to each other.
A folded-plate roof configured to removably connect a lower end portion of the leg to the folded-plate roof through an impact absorbing member, and to install the support column on the folded-plate roof. Safety equipment. In the safety equipment for folded-plate roof of Claim 1,
The safety equipment for a folded-plate roof, wherein the shock absorbing member is a metal fitting formed in a step shape with a plurality of bent portions. In the safety equipment for folded-plate roofs of Claim 1 or Claim 2,
A fixing bracket is attached to the folded plate roof, the shock absorbing member is attached to the fixing bracket, a lower end portion of the leg is connected to the shock absorbing member,
A safety equipment for a folded-plate roof, wherein a lower end portion of the leg is detachably connected to the folded-plate roof via the impact absorbing member. In the safety equipment for folded-plate roof of Claim 3,
A safety equipment for a folded-plate roof, wherein the fixing bracket is attached to the folded-plate roof with an elastic member interposed between the fixed-plate roof and the folded-plate roof.

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