JP2018066211A - Safety equipment for folded-plate roof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide effective and appropriate safety equipment to be installed on a roof surface of a folded-plate roof, and safety equipment for a folded plate roof which is excellent in fall preventing performance especially for preventing crash or falling.SOLUTION: Safety equipment A installed on a roof surface of a folded-plate roof 1 comprises at least one pair of struts 2 arranged at a predetermined interval on the folded-plate roof 1, and a main rope 9 to be bridged between the upper end parts of the struts 2. The strut 2 includes three or more legs 3 having the same shape and the same size, and the upper end parts of the plurality of legs 3 are connected to each other so as to be relatively rotatable and divisible. Also, an impact absorbing member 11 is interposed between the upper end part of the strut 2 and the main rope 9, and the strut 2 and the main rope 9 are connected via the impact absorbing member 11.SELECTED DRAWING: Figure 1

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 this reason, there are problems such as complicated work and poor appearance.

  On the other hand, the applicant of the present application combines a set of three legs of the same shape and the same size in a tripod shape, and connects the upper ends of these three legs in a state that allows relative rotation and disassembly. The struts are arranged, and at least one pair of struts are arranged at intervals, and the lower ends of the legs are detachably connected to the folded plate roof via fixing brackets, and the upper ends of these struts are arranged. We have invented a safety device for folded plate roofs constructed by laying a master rope between the parts, and have already filed patent applications (see Patent Documents 3 and 4).

  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 JP, 2015-151710, A JP 2014-198989 A

  On the other hand, in the safety equipment for folded plate roofs by the applicant of the present application, it may be desired to further improve the performance against crashing and fall curing, and in particular, impact mitigation performance when preventing crashing and falling. It has been desired to improve (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 shock absorbing member is interposed between the upper end portion of the support column and the master rope, and the support column and the master rope are connected via the shock absorbing member. Safety equipment for folded-plate roofs, characterized in that

  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 the safety equipment for folded plate roofs of the present invention, the struts are firmly joined to the props via the shock absorbing member, compared to the conventional idea of firmly joining the props to the folded plate roofs and receiving the impact when preventing falling or falling. By connecting the rope, when the operator falls from the folded roof, the impact absorbing member is provided between the master rope and the pillar, so that the impact force acting on the pillar can be reduced with the shock absorbing member. Can be absorbed and dispersed.

  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 figure which shows the support | pillar of the safety equipment for folded-plate roof which concerns on one Embodiment of this invention, a fixing metal fitting, and the state which installed the support | pillar in the folded-plate roof, (a) is the lower connection piece of a leg Is a perspective view from above showing a state in which the metal plate is connected to the goby portion of the folded plate roof using a fixing bracket, (b) is a front view in a direction along the extending direction of the gouge portion of the folded plate roof, and (c) is a folded view. It is a side view of the direction orthogonal to the extending direction of the goby part of a plate roof. 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 a front view. It is a figure which shows the state which absorbed the impact of the impact-absorbing member of the safety equipment for folded-plate roof which concerns on one Embodiment of this invention, and deformed plastically, (a) is the state deform | transformed with the deformation ratio of 27.7%. (B) shows a state in which the deformation amount is 90 mm in the fully extended state and (b) shows a state in which the deformation rate is 91.1% (a state in which the deformation amount is 90 mm in the fully extended state). FIG. It is a figure which shows the condition which ensures the safety | security of the operator who fell by the safety equipment for folded-plate roof which concerns on one Embodiment of this invention. In a verification experiment, it is a figure which shows the safety equipment for the folded-plate roof installed in the eaves side, (a) is a front view, (b) is a top view, (c) is a side view. In a verification experiment, it is a figure which shows the safety equipment for folded-plate roof installed in the keraba side, (a) is a front view, (b) is a top view, (c) is a side view. It is a figure which shows the impact-absorbing member of the other form used in verification experiment.

  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 the folded-plate roof) A of the present embodiment is installed at a position near the eaves as a measure for preventing the fall and the curing of the fall when performing various operations on the roof surface of the folded-plate roof 1. As shown in FIG. 1, the two struts 2 are installed with an appropriate interval between them, and the master rope 9 is constructed between the upper ends of the struts 2. In addition, as the master rope 9, it is desirable to use a wire rope made of stainless steel or nylon from the viewpoints of proof stress performance, durability performance, and the like. In particular, a stainless steel wire rope has high rigidity and excellent durability performance as well as strength performance.

  Specifically, as shown in FIG. 1 and FIG. 2, the safety equipment A of the present embodiment is configured so that the upper ends of the three legs 3 having the same shape and the same size can be relatively rotated. They are connected in a releasable manner and combined in a tripod shape.

  Further, as shown in FIGS. 1, 2, and 3, the safety equipment A of the present embodiment includes a fixing bracket 8 for connecting the leg 3 of the support 2 to the folded plate roof 1 in addition to the support 2. The shock absorbing member 11 absorbs and disperses the impact force (load) applied to the safety equipment A (the support column 2), and relaxes the external force transmitted to the support plate 2 and the folded plate roof 1.

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

  Further, in the support column 2 of this embodiment, the leg 3 is a metal strip (for example, a steel plate having a thickness of 1 mm or more, preferably 1.2 mm or 2.3 mm (galvanized steel plate, Galvalume steel plate (registered trademark)). Etc.) can be suitably employed). 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 fixing bracket.

  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 on the opposite sides with respect to the main body portion 3a, and the main body portion 3a is inclined at a predetermined angle with respect to the vertical plane. It is formed so that it may be arranged horizontally in the 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.

  The inclination angle of the upper connecting piece 3b and the lower connecting piece 3c with respect to the main body 3a in the leg 3 is such that when the column 2 as a tripod constituted by the leg 3 is installed on the roof surface, the upper connecting piece 3b and the lower connecting piece 3b What is necessary is just to set suitably so that all the connection pieces 3c may become a horizontal state, and although this inclination angle is not specifically limited, For example, it is preferable to set it as about 120 degrees.

The angle at which the side edges of the band plate are folded to form the stiffening rib 6 with respect to the main body 3a and the lower connecting piece 3c is such that the main body 3a and the lower connecting piece 3c have a desired rigidity. However, for example, it may be set to about 120 °.
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. Further, the reinforcing rib 6 may be formed to be folded back on the back surface side of the main body portion 3a.

  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.

  Furthermore, each leg 3 is made of a band plate as a raw material and has the same shape, the same size, a light weight and a compact size, and can be manufactured at low cost. By rotating the leg 3 around the fulcrum, 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, the three legs 3 are combined in a tripod shape, and the upper connecting pieces 3b are overlapped with each other so that the positions of the upper connecting holes 4 are matched. The support bracket 2 as a tripod is assembled by inserting the connecting metal fitting 7 and fastening the bolt.
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. 1 and 4, the shock absorbing member 11 of the present embodiment is a metal fitting made of a band plate as a material, and a pair of plates disposed at both ends with the plate surfaces facing in the lateral direction. For example, the bending angle θ1 of the connecting portion between the connecting portion 11a and the connecting portion 11a is set to 135 degrees, the bending angle θ2 of the other portion is set to 90 degrees, and a plurality of bends are made between the pair of connecting portions 11a (a plurality of And a shock absorbing portion 11c formed in a step shape (provided with a bent portion 11b).

  Further, the impact absorbing member 11 of the present embodiment is formed of, for example, stainless steel, a band plate having a thickness of 2 mm and a width of 24 mm, and having 14 bent portions 11b. Further, the length of both end portions of the shock absorbing member 11 disposed at an angle of 135 degrees from the connecting portion 11a is 15 mm, the length of the portion bent at an angle of 90 degrees is 30 mm, and the length of each connecting portion 11a. Is formed as 30 mm.

  Further, the connecting portion 11a is provided with an insertion hole 11d penetrating from one surface of the plate surface to the other surface.

  And when installing the safety equipment A of this embodiment, as shown in FIG.1, FIG.2, FIG.3, FIG.4, as shown in FIG.1, FIG.2, FIG.3, FIG. And install. At this time, in this embodiment, it is preferable to install the fixing bracket 8 with an elastic member 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, the lower coupling piece 3c of the leg 3 of the support column 2 is placed on the fixing bracket 8, and a bolt is inserted into the lower connection hole 5 and the nut is fastened. 3 are connected, and the support column 2 is connected to the folded plate roof 1 through the fixing bracket 8 and installed.

  At this time, when assembling the column 2, the positions of the legs 3 are set so that the legs 3 are as equally spaced as possible in plan view (so as to form an angle of 120 degrees with each other). It is preferable to position. 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 3 c may be aligned with the position of the fixing bracket 8.

Then, the lower connecting piece 3c at the lower end of each leg 3 is removably connected to the folded plate roof 1 by using the fixing bracket 8, so that the support column 2 has a predetermined position such as a position near the eaves of the folded plate roof 1. Installed in a self-supporting state.
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. Moreover, there may be a reinforcing member for reinforcing the support 2. Furthermore, the fixing bracket 8 is formed in a T-shape, and the three lower connecting pieces 3c (lower end portions) of the three legs 3 are connected to the folded plate roof 1 through the three ends of the fixing bracket 8, respectively. You may make it do. That is, the fixing bracket 8 may also serve as a reinforcing member. In particular, in the safety equipment A according to the present invention, as will be described later, since the shock absorbing member 11 is provided to absorb the impact load when the operator falls, each leg 3 of the support column 2 with respect to the folded roof 1. Can be firmly fixed, and the fixture 8 can be configured to also serve as a reinforcing member.

Next, the master rope 9 is erected between the upper ends of both the columns 2.
At this time, one connecting portion 11 a is connected to the upper end portion of each strut 2, the other connecting portion 11 a is connected to the end portion of the master rope 9, and the master rope 9 is connected to the strut 2 via the shock absorbing member 11. . Moreover, when connecting each connection part 11a of the impact-absorbing member 11, the upper end part of the support | pillar 2, and the end part of the master rope 9, what is necessary is just to use the insertion hole 11d of the connection part 11a, and using appropriate metal fittings. Even if it connects, the master rope 9 may be connected directly to the upper end part of the support | pillar 2, and may be connected.

  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 operator's crash, and the work safety when performing various operations on the roof surface of the folded-plate roof 1 is sufficient. Can be secured.

  In the safety equipment A of the present embodiment installed as described above, the support column 2 and the master rope are connected via the impact absorbing member 11 as described above.

  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 force applied to the master rope 9 does not directly act on the support column 2 when the operator falls and falls, but acts on the support column 2 via the impact absorbing member 11.

  And since the impact-absorbing member 11 is provided with the some bending part 11b and is formed in the step shape, when an impact force acts on the impact-absorbing member 11 from the master rope 9, this impact-absorbing as shown, for example in FIG. The shock absorbing member 11 is plastically deformed such that the angle θ2 of the bent portion 11b of the member 11 is increased from, for example, 90 degrees and the bent portion 11b is opened, and the force acting on the support column 2 is absorbed by the plastic deformation of the shock absorbing member 11. , Can be relaxed.

  Thus, when a crash or fall occurs, a large impact force acts on the support column 2 to prevent the support column 2 from being deformed or the folded plate roof 1 to which the support column 2 is fixed from being deformed. It becomes possible to ensure the safety of the person.

  In addition, when the end of the folded plate roof 1 is partitioned by the safety equipment A of the present embodiment for a long period of time, it is difficult for the parent rope 9 to deteriorate over time. Therefore, as the parent rope 9 (as an alternative to the normal parent rope), stainless steel is used. A wire rope made of metal may be used. On the other hand, at the time of work at the end of the folded plate roof 1 (eave edge, keraba), the work is performed while connecting the safety belt worn by the worker to the stainless steel wire rope as the master rope 9. At this time, since the tension of the safety rope (for example, SUS 4 mm) is stronger than the tension of the wire rope of the master rope 9, when the operator falls, the impact transmitted to the safety rope is affected. It becomes larger than the master rope 9.

  On the other hand, by providing the impact absorbing member 11 as in this embodiment, when the operator falls from the folded plate roof 1, the impact can be absorbed and alleviated by the impact absorbing member 11. As a result, the impact force acting on the support column 2 can be absorbed and alleviated, and the impact force acting on the safety belt wire rope worn by the worker can also be absorbed and mitigated, ensuring the safety of the worker more reliably. It becomes possible to do.

  Here, as shown in FIG. 6, when the operator falls from the end of the folded-plate roof, the pillar 2, the shock absorbing member 11, and the master rope 9 according to the present embodiment fall on the operator's ground. A demonstration experiment conducted to clarify the superiority of the safety equipment A for the folded-plate roof of the present invention having the performance to prevent, that is, the shock absorbing member 11 will be described.

  In this demonstration experiment, as shown in FIGS. 7 and 8, a stainless steel wire rope (stainless steel wire rope φ4 mm 7 × 7, outer peripheral vinyl coating φ6 mm) is used as the master rope 9, and a pair of the safety equipment A of this embodiment is used. The test was performed in a state in which the support columns 2 (aluminum T-shaped reinforcing material and aluminum 3 type provided with a center pole) were installed on the eaves side and the keraba side of the folded plate roof 1, respectively. In addition, when the goby portion 1a of the folded-plate roof 1 is a round goby, sufficient strength is confirmed compared to the square goby. Therefore, in this demonstration experiment, the test is performed on the folded-plate roof 1 of the goby portion 1a. went.

The test method will be described.
In this demonstration experiment, two tripod struts 2 are installed with a 9.5 m span, and both ends of the master rope 9, which is a stainless steel wire rope, are connected to the upper circular ring of each strut 2 via shock absorbing members 11. did. The shock absorbing member 11 was formed by bending a plate material of stainless steel t = 2.0 mm and width 24 mm to a length of 330 mm. In addition, the center of the upper circular ring of the support column 2 is set to be 900 mm or more higher than the mountain position of the folded plate roof 1.

  In this demonstration experiment, the master rope 9 was tensioned with a turnbuckle, and a 86 kg fallen body 12 that was regarded as an operator was connected to the center of the master rope 9 (the center of the span) and dropped freely by 4.7 m. The falling body 12 was attached to the center of the wire rope via an unused 1.7 m lanyard (safety rope).

And after dropping the fallen body 12 freely, the following 10 items were measured and confirmed.
(1) Length of impact absorbing member (allowable deformation rate is set to 30% to 90% (357 mm to 411 mm))
(2) Deformation of the upper part of the support (Visual: presence or absence of cracks and damage)
(3) Damage and breakage of stainless steel wire rope (visual inspection)
(4) Deformation amount of aluminum material T-shaped reinforcement (reinforcing member that also serves as fixing bracket 8) (Visual: presence or absence of cracks and breakage)
(5) Strut height deformation (Measurement: Passed when 70% or more is maintained)
(6) Dropping of the fixing bracket (Visual)
(7) Deformation amount of folded plate roof (Visual: Pass if it can be corrected with a sheet metal tool)
(8) Removal of center pole (visual inspection)
(9) Suspension amount (m) (Video judgment: If the height of the lanyard and falling body mounting position is 1.2m or more from the ground (the height of the waist of a person with a height of 180cm is set to 1m), it passes (10) Deformation amount (Visual: presence or absence of cracks and damage)

  Table 1 shows the test results.

  As shown in this table, the deformation deformation of the shock absorbing member 11 is confirmed to be almost the same in all four tests, and before the shock absorbing member 11 formed by bending reaches the limit of plastic deformation, It was confirmed that there was a function to absorb the tension of the rope 9 and prevent the fixing bracket 8 of the support 2 from falling off. In addition, when the same test is performed in the state where the shock absorbing member 11 is not provided, it has been confirmed that the fixture 8 is dropped.

  In addition, after the falling body 12 is dropped, the height ratio of the support column 2 is 95% at the maximum (70% or more is acceptable), and there is no detachment of the support column 2 from the fixing bracket 8, and the fall prevention performance is sufficiently exhibited. It was confirmed that

Furthermore, the drooping amount of the falling body 12 was 2.8 m at the maximum.
If a worker with a height of 180 cm falls with a safety belt attached at the waist level, if there is a gap of 1.2 m or more between the dropped worker's waist and the floor where there is a risk of collision, the worker's There is no possibility that the foot touches the floor. For this reason, in this demonstration experiment, the gap is secured to 2.07 m (maximum drooping amount), the column 2 and the master rope 8 are installed on the folded plate roof 1 having a height of 4 m, and a normal safety belt is installed. It can be determined that there is no possibility that the operator's feet will collide with the floor surface or the like when the operator who uses the heel falls with a hanging amount of 2.8 m from the end.

  As described above, it has been proved by the demonstration experiment that the safety of the worker can be surely ensured by providing the shock absorbing member 11.

  In the test on the eaves side, when the shock absorbing member 11 made of stainless steel having a total length of 180 mm and a thickness of 1.5 mm in FIG. The total length was changed from 180 mm to 210 mm. The other strut 2 side was changed from a bending angle of 90 ° to about 160 ° and deformed from a total length of 180 mm to 215 mm. Further, the T-shaped reinforcement on the side of one column 2 slid about 150 mm, the fixing bracket 8 on the other column 2 side was deformed, and dropped from the gouge 1a of the folded plate roof 1. The other strut 2 was confirmed to fall down.

  When the shock absorbing member 11 made of stainless steel having a total length of 150 mm and a thickness of 4.0 mm in FIG. 9B is used, the one support column 2 side changes from a bending angle of 90 ° to about 91 °, and the total length of 150 mm to 152 mm. Transformed into. The other strut 2 side was changed from a bending angle of 90 ° to about 91 ° and deformed from a total length of 150 mm to 152 mm. In this case, the shock absorbing performance was not obtained so much, the fixing bracket 8 on the other support column 2 side was deformed and dropped from the cross section 1a of the folded plate roof 1, and the other support column 2 was confirmed to fall down.

  When the impact absorbing member 11 made of stainless steel having a total length of 153 mm and a thickness of 2.0 mm in FIG. 9C is used, the one strut 2 side changes from a bending angle of 90 ° to about 100 °, and the total length of 153 mm to 157 mm. Transformed into. The other strut 2 side was changed from a bending angle of 90 ° to about 100 ° and deformed from a total length of 153 mm to 157 mm. Even in this case, the shock absorbing performance was not obtained so much, and the fixing bracket 8 on the other support column 2 side was deformed and dropped from the cross section 1a of the folded plate roof 1, and the other support column 2 was confirmed to fall down.

  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 master rope 9 is connected to the support pillar 2 via 11, the shock absorbing member 11 is provided between the master rope 9 and the support pillar 2 when the operator falls from the folded plate roof 1. Thus, the impact force acting on the support column 2 can be absorbed and dispersed by the impact absorbing member 11.

  As a result, when the support column 2 and the folded plate roof 1 are firmly joined as in the prior art, a concentrated load acts on the joined portion due to an impact, which may cause breakage or breakage. Since the impact absorbing member 11 absorbs and disperses the impact at the time of preventing the fall or falling, the joint portion between the support column 2 and the folded plate roof 1 is not broken or broken, and it is surely and effectively performed. It becomes possible to prevent dropping and falling. Therefore, it is possible to provide the safety equipment A for the folded-plate roof having high impact relaxation performance and high reliability.

  Furthermore, in the safety equipment A for folded-plate roof of this embodiment, when the impact absorbing member 11 is a metal fitting formed in a step shape with a plurality of bent portions 11b, each impact force acts. It is possible to plastically deform so that the bent portion 11b is opened, and to suitably absorb and relax the impact force. 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.

  In the safety facility A of the present embodiment, the column 2 can be easily removed by detaching the fixing bracket 8 and the shock 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.

  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, the safety equipment A of the present embodiment can ensure the safety of the worker only by laying the master rope 9 between the support columns 2, but as shown in FIG. The net 10 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 plate roof 1 to further improve safety. Can be made.

  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.

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 Connecting portion 11b Bending portion 11c Shock absorbing portion 11d Insertion hole 12 Falling body A Safety equipment for folded plate roof

Claims (2)

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 and can be divided.
A folded-plate roof characterized in that an impact absorbing member is interposed between an upper end portion of the support column and the master rope, and the support column and the master rope are connected via the impact absorbing member. 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.

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