JP2021116557A - Work scaffold board - Google Patents

Abstract

To provide a work scaffold board capable of discharging water such as rainwater from an upper surface part of a main body and preventing water from accumulating on the upper surface part and ice from being produced by freezing water.SOLUTION: A work scaffold board 10 installed on a temporary scaffold and allowing a worker to walk on it in a riding state consists of: a main body 12; hook members 11 arranged two by two at each end in the longitudinal direction of the main body 12 at an interval in the width direction of the main body 12 and locked to a horizontal member of the temporary scaffold; and an end member 13 disposed between the two hook members 11 at each end in the longitudinal direction of the main body 12. A groove 23 is formed in an upper surface part 12A of the main body 12, and water accumulated on the upper surface part 12A is discharged through the groove 23.SELECTED DRAWING: Figure 2

Description

The present invention relates to a work scaffolding board that is installed on a temporary scaffolding constructed at a work site such as construction or civil engineering and is used for a worker to ride on and walk.

Work scaffolding cloth boards for workers to ride and walk are installed on temporary scaffolding constructed at work sites such as construction and civil engineering. As shown in Patent Document 1 below, two working scaffolding boards are arranged at the main body and at each end of the main body in the length direction at intervals in the width direction of the main body. It is configured to include a hook member locked to the horizontal member of the temporary scaffold and an end member arranged between the two hook members at each end in the length direction of the main body. There is.

JP-A-2019-85698

In the above-mentioned work scaffolding board, rainwater may collect on the upper surface of the main body of the work scaffolding board in rainy weather, and such water and frozen ice of water may be collected by a worker who gets on the main body of the work scaffolding board. In order to affect the work by the work, it is necessary to devise a way to discharge water such as rainwater from the upper surface of the main body of the work scaffolding board.

An object of the present invention is to provide a work scaffolding plate capable of discharging water such as rainwater from the upper surface of the main body.

Two work scaffolding plates according to the present invention are arranged at the main body and each end of the main body in the length direction at intervals in the width direction of the main body, and are locked to the horizontal members of the temporary scaffolding. In a work scaffolding plate including a hook member and an end member arranged between the two hook members at each end of the main body in the length direction, the upper part of the main body. The surface is characterized in that a groove for discharging the water accumulated on the upper surface thereof is formed.

As described above, in the work scaffolding plate according to the present invention, since the upper surface of the main body on which the worker rides is formed with a groove for discharging the water collected on the upper surface, rainwater or the like collected on the upper surface of the main body is formed. The water is discharged to the outside of the main body through this groove, so that it is possible to eliminate the accumulation of water on the upper surface of the main body and the formation of frozen ice.

In the present invention, the groove provided on the upper surface of the main body of the work scaffolding plate may be continuously formed over the entire width of the main body in the width direction of the main body, or the main body. It may be formed continuously over the entire length of the main body in the length direction.

Of these, in the latter case, the groove provided on the upper surface of the main body of the work scaffolding plate is formed continuously in the length direction of the main body over the entire length of the main body. The end member has an upper flange fitted on the upper side of the main body of the work scaffold plate, a lower flange fitted on the lower side of the main body, and a connecting portion connecting the upper flange portion and the lower flange portion. If it is, the end of the groove is opened toward the internal space of the end member surrounded by the upper flange portion, the lower flange portion, and the connecting portion, thereby opening the internal space of the end member of the groove. It may be a space in which water falling from the end enters.

Further, the grooves provided on the upper surface of the main body of the work scaffolding plate are formed continuously in the length direction of the main body over the entire length of the main body, and the end members are used as the work scaffolding. It is assumed that the upper flange fitted to the upper side of the main body of the plate, the lower flange fitted to the lower side of the main body, and the connecting portion connecting the upper flange portion and the lower flange portion are provided, and the upper flange portion and the upper flange portion. When the end portion of the groove is opened toward the internal space of the end member surrounded by the lower flange portion and the connecting portion to make this internal space a space in which water falling from the end portion of the groove enters. Both end faces of the end members in the width direction of the main body of the work scaffolding plate are made to face each other in the width direction of the two hook members and the main body, and at least one end face and one end face of both end faces of the end members. A gap may be provided between the hook member and the hook member.

According to this, the water that has fallen from the end of the groove into the internal space of the end member can be discharged to the outside of the work scaffolding plate through the gap between the end face of the end member and the hook member.

In addition, in order to discharge the water that has fallen from the end of the groove into the internal space of the end member from this internal space, a drain hole is provided in the lower flange portion and the connecting portion of the end member forming this internal space. It can also be achieved by doing so.

Further, when the end member has the upper flange portion, the lower flange portion, and the connecting portion as described above, the end member is provided on at least one of the lower surface of the upper flange portion and the upper surface of the lower flange portion. By providing a protrusion protruding toward the internal space and bringing this protrusion into contact with the end face in the length direction of the main body of the work scaffold plate, the end member is brought to the main body of the work scaffold plate in the length direction of the main body. It may be possible to position and arrange it.

According to this, by positioning and arranging the end member on the main body of the work scaffolding plate by the protrusion in the length direction of the main body, the end member is welded to the main body at a predetermined position in the length direction of the main body. Can be combined by.

In this way, at least one of the lower surface of the upper flange portion and the upper surface of the lower flange portion of the end member is provided with a protrusion protruding toward the internal space of the end member, and this protrusion is used as the main body of the work scaffold plate. This is a case where the end member can be positioned and arranged on the main body of the work scaffold plate in the length direction of the main body by abutting the end face in the length direction, and this protrusion is placed on the main body of the end member. When the protrusion is provided on the lower surface of the upper flange portion and the protrusion is continuously formed over the entire length in the length direction of the end member which is the width direction of the main body, the protrusion is formed on the upper flange portion of the protrusion. The amount of protrusion from the lower surface to the internal space side is made smaller than the depth dimension of the groove from the surface of the upper surface portion of the main body in contact with the lower surface of the upper flange portion.

According to this, even if the protrusion is continuously formed over the entire length in the length direction of the end member which is the width direction of the main body, the protrusion is projected from the lower surface of the upper flange portion to the internal space side. Since the amount is smaller than the depth dimension of the groove from the surface of the upper surface of the main body in which the lower surface of the upper flange is in contact, the end of the groove that opens toward the internal space of the end member. The entire surface is not blocked by the protrusions, which allows water to fall from the end of the groove into the interior space of the end member.

Further, in the above-mentioned work scaffolding plate according to the present invention, the main body may be provided with a rib portion extending downward at a position corresponding to the position where the groove is formed.

According to this, even if a groove for discharging water is provided on the upper surface portion of the main body of the work scaffolding plate, the strength of the main body at the portion where the groove is formed can be increased by the rib portion.

Further, in the above-mentioned work scaffolding plate according to the present invention, the number of grooves provided on the upper surface of the main body may be one, or may be a plurality of grooves provided in parallel.

Of these, if the number of grooves provided on the upper surface of the main body of the work scaffolding plate is a plurality of grooves provided in parallel as in the latter case, water can be more effectively discharged from the upper surface of the main body. ..

In this case, the number of grooves provided on the upper surface of the main body of the work scaffolding plate is a plurality of grooves provided in parallel, which coincides with the position where the grooves are formed in the main body as described above. When a rib portion extending downward is provided at the position where the rib portion is to be provided, the rib portion may be provided for all the grooves, or is provided for a specific one or a plurality of grooves among the plurality of grooves. May be good.

Further, in the work scaffolding plate according to the present invention, in order to provide the above-mentioned hook member on the work scaffolding plate, when the hook member is fastened to the main body of the work scaffolding plate by a fastener, the entire fastener is used. Is preferably arranged within the width dimension of the main body on the lower side of the upper surface portion of the main body.

According to this, since the entire fastener is arranged in a state of being hidden within the width dimension of the main body under the upper surface portion of the main body, a plurality of work scaffold boards can be used as the main body of these work scaffold boards. When the work scaffolding boards are installed side by side in the width direction of the above-mentioned temporary scaffolding, the main bodies of the work scaffolding boards can be installed by eliminating or reducing the gap generated between these main bodies.

It should be noted that, in this way, the entire fastener for fastening the hook member to the main body may be arranged on the lower side of the upper surface portion of the main body within the width dimension of the main body, for example, on the main body. This can be realized by providing a wall portion connected to the upper surface portion at a position shifted inward from the widthwise end portion of the upper surface portion of the above surface portion and fastening the hook member to the wall portion with a fastener.

Further, the fastener for fastening the hook member to the main body may be a bolt and a nut, or may be a rivet.

Further, the main body of the work scaffolding plate according to the present invention may be manufactured by extrusion molding or pultrusion molding of aluminum or an aluminum alloy, or may be manufactured by press molding of sheet metal. Further, the end members arranged at the respective ends in the length direction of the main body may also be manufactured by extrusion molding or pultrusion molding of aluminum or aluminum alloy, or may be manufactured by press molding of sheet metal. good.

Further, the work scaffolding plate according to the present invention may or may not be provided with an end cover on the outside of the end member in the length direction of the main body, or may not be provided with such an end cover.

Further, the horizontal member of the temporary scaffold to which the hook member provided on the work scaffold plate according to the present invention is locked may be provided in any form on the temporary scaffold, that is, the horizontal member may be provided. For example, in a temporary scaffold constructed using a building frame, a horizontal member forming a part of the building frame may be used, or in a temporary scaffold constructed using a plurality of independent columns. , In order to connect two adjacent columns, a horizontal member may be used over these columns.

According to the present invention, since the groove is formed on the upper surface of the main body of the work scaffolding plate, it is possible to obtain the effect that water such as rainwater can be discharged from the upper surface of the main body.

FIG. 1 is a perspective view showing a temporary scaffold on which a work scaffold plate according to an embodiment of the present invention is installed. FIG. 2 is a perspective view of the work scaffolding board. FIG. 3 is a plan view of the work scaffolding board. FIG. 4 is a front view in which a part of the work scaffolding board is omitted. FIG. 5 is a left side view of the work scaffolding board in FIG. FIG. 6 is an enlarged plan view of a part of the work scaffolding board. FIG. 7 is a back view of the work scaffolding board. FIG. 8 is a perspective view showing a main body semi-member which is a member forming the main body of the work scaffolding plate. FIG. 9 is a cross-sectional view taken along the line S9-S9 of FIG. FIG. 10 is a cross-sectional view taken along the line S10-S10 of FIG. FIG. 11 is a plan view showing that the main body of the work scaffolding plate is formed by arranging the two main body half members symmetrically in the width direction of the main body. FIG. 12 is a perspective view of the end member. FIG. 13 is a vertical cross-sectional view of the end member. FIG. 14 is a cross-sectional view taken along the line S14-S14 of FIG. FIG. 15 is a partially enlarged view of FIG. FIG. 16 is a cross-sectional view taken along the line S16-S16 of FIG. FIG. 17 is a plan view showing a case where a plurality of work scaffolding plates are arranged side by side in the length direction and the width direction of the main body.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows a temporary scaffold 1 constructed by using the work scaffold plate 10 according to the embodiment of the present invention. The temporary scaffolding 1 is arranged with a plurality of building frames 2 arranged side by side at intervals, and a jack base 3 arranged below these building frames 2 and for aligning the height positions of the respective building frames 2. , The scaffolding material 4 and the brace material 5 for connecting the adjacent building frames 2 are included, and each building frame 2 has two scaffolding materials 2A and their legs. It has two upper and lower horizontal members 2B and 2C for connecting the column members 2A, and a stiffener 2D for connecting the scaffolding members 2A and the horizontal members 2B and 2C. The work scaffolding plate 10 according to the embodiment is temporarily installed between two adjacent building frames 2 by engaging the hook member 11 with the lower horizontal member 2C from above. It is installed on scaffold 1. Therefore, in the temporary scaffold 1 of the present embodiment, the horizontal member 2C on the lower side is a horizontal member to which the hook member 11 provided on the work scaffold plate 10 is locked.

2A and 2B show a perspective view of the work scaffolding plate 10, FIG. 3 is a plan view of the work scaffolding plate 10, and FIG. 7 is a back view of the work scaffolding plate 10. As shown in FIGS. 2, 3 and 7, the work scaffolding plate 10 is rectangular in plan view with the main body 12 on which the worker rides and walks or performs work. It is configured to include end members 13 arranged at each end in the length direction of the main body 12, and the above-mentioned hook member 11 is formed at each end in the length direction of the main body 12. , Two pieces are provided at intervals in the width direction of the main body 12, and an end member 13 in which the width direction of the main body 12 is the length direction is arranged between these hook members 11.

As shown in FIG. 2, the hook member 11 made of the thick plate material includes the base portion 11A inserted inside the main body 12 of the work scaffolding plate 10 and the above-mentioned lower horizontal frame. A downward opening 11C that is fitted and locked from above is formed in the material 2C, and has a tip portion 11B that protrudes to the outside of the main body 12.

The main body 12 of the work scaffolding plate 10 is formed by arranging two main body half members 14 symmetrically in the width direction of the main body 12, and a perspective view of the main body half members 14 is shown in FIG. The main body semi-member 14 is formed by cutting an extruded product or a pultruded product of aluminum or an aluminum alloy manufactured in a long dimension into a predetermined length dimension and then performing post-processing such as pressing or drilling. FIG. 9 shows a cross-sectional view taken along the line S9-S9 of FIG. 8, and FIG. 10 shows a cross-sectional view taken along the line S10-S10 of FIG. As shown in FIGS. 9 and 10, the main body half member 14 has a top surface portion 15 having a width dimension extending over the entire width of the main body half member 14 and a main body half in the upper surface portion 15. The first wall portion 16 and the second wall portion 17 hanging downward from each end in the width direction of the member 14, and the first wall portion between the first wall portion 16 and the second wall portion 17 thereof. At a position close to 16, it has an intermediate wall portion 18 hanging from the upper surface portion 15. The width direction of the main body half member 14 referred to here is the width direction of the main body 12 of the work scaffolding plate 10, and is also the width direction of the work scaffolding plate 10.

Further, in the main body half member 14 according to the present embodiment, the first wall portion 16 and the intermediate wall portion 18 are connected by a first lower surface portion 19 whose width dimension is smaller than that of the upper surface portion 15. A protruding portion 20 protruding from the intermediate wall portion 18 toward the second wall portion 17 is connected to the lower surface portion 19, and the protruding portion 20 projects horizontally from the intermediate wall portion 18 toward the second wall portion 17 side. From the first horizontal portion 20A, the standing portion 20B standing at a right angle from the tip of the first horizontal portion 20A, and the second horizontal portion 20C protruding horizontally from the upper end of the standing portion 20B toward the second wall portion 17 side. Become. Further, at the lower end of the second wall portion 17, a second lower surface portion 21 having a width dimension smaller than that of the upper surface portion 15 and the first lower surface portion 19 is provided, and the lower end of the second wall portion 17 to the first wall portion 16 side. An upright portion 22 that stands up at a right angle is provided at the tip of the second lower surface portion 21 that protrudes horizontally and has the same height position as the second horizontal portion 20C of the projecting portion 20.

Further, on the upper surface portion 15 of the main body half member 14 according to the present embodiment, a plurality of, three grooves 23 in the present embodiment are arranged side by side at intervals in the width direction of the main body half member 14. A rib portion 24 hangs down from the lower surface of the central groove 23A. A flat portion 25 having the same or substantially the same width as the second lower surface portion 21 is provided at the lower end of the rib portion 24, and the height position of the flat portion 25 is the second horizontal of the protruding portion 20. It is the same as the height position of the portion 20C and the height position of the second lower surface portion 21.

As described above, since the main body half member 14 is formed of an extruded product or a pultruded product of aluminum or an aluminum alloy, the upper surface portion 15, the first wall portion 16, and the second wall portion 17 described above are used. , The first lower surface portion 19, the first horizontal portion 20A of the protruding portion 20, the standing portion 20B, the second horizontal portion 20C, the second lower surface portion 21, the standing portion 22, the groove 23, the rib portion 24, and the like. As can be seen from FIG. 8, the flat portion 25 is continuous over the entire length of the main body half member 14 in the length direction, which is also the length direction of the main body 12. Then, a large number of non-slip conical protrusions 26 having a hole 26A at the top are regularly formed on the upper surface portion 15 of the main body half member 14 by press working and drilling.

Further, as shown in FIG. 8, the first wall portion 16 has a large hole 27 having a large diameter at each end in the length direction of the main body half member 14 in the length direction of the main body half member 14. Two of them are arranged side by side with an interval of 1 and the large holes 27 are also shown in FIG. Further, as shown in FIG. 9, the intermediate wall portion 18 has a small hole 28 having a small diameter at the same position as the position in the length direction of the main body half member 14 in which the large hole 27 is formed. Similar to the large hole 27, the small hole 28 is also provided, and at each end of the intermediate wall portion 18 in the length direction of the main body half member 14, the main body half member 14 is spaced apart in the length direction. Two are installed side by side.

In FIG. 11, in order to form the main body 12 of the work scaffolding plate 10 by the two main body half members 14, the work of arranging the main body half members 14 close to each other in the width direction of the main body 12 and facing each other is performed. It is shown. Since this work is carried out with the first wall portion 16 of each main body half member 14 as the outside in the width direction of the main body 12 and the second wall portion 17 as the inside in the width direction of the main body 12, the two main body halves The members 14 are arranged symmetrically in the width direction of the main body 12. After the two main body half members 14 are symmetrically arranged in the width direction of the main body 12 in this way, as shown in FIG. 7 which is a back view of the work scaffolding plate 10, it becomes an elongated plate-shaped member. A plurality of connecting members 29 are bridged between the second horizontal portions 20C provided in each of the above-mentioned protruding portions 20 of the two main body half members 14, and a plurality of connecting members 29 are provided in the length direction of the main body 12 of the work scaffolding plate 10. , Each of the two connecting members 29 provided in the present embodiment is joined to the second horizontal portion 20C, the flat portion 25, and the second lower surface portion 21 of the two main body half members 14 by welding.

As a result, the main body 12 of the work scaffolding plate 10 is formed by the two main body half members 14 connected by the connecting member 29. The state in which the two main body half members 14 are connected by the connecting member 29 is also shown in FIG. 14, which is a cross-sectional view taken along the line S14-S14 of FIG. When the main body 12 of the work scaffolding plate 10 is formed by two main body half members 14 connected by the connecting member 29, as shown in FIG. 14, the upper surface portion 15 of the main body half member 14 is the main body. The upper surface portion 12A of the main body 12, the first wall portion 16 of the main body half member 14 is the outer wall portion 12B on the outer side in the width direction of the main body 12, and the intermediate wall portion 18 of the main body half member 14 is the inner wall on the inner side in the width direction of the main body 12. The first lower surface portion 19 of the main body half member 14 becomes the lower surface portion 12D of the main body 12. The upper surface portion 12A of the main body 12 is provided with six grooves 23 extending in parallel with each other at intervals in the width direction of the main body 12 over the entire length in the length direction of the main body 12. Further, the main body 12 is provided with two inner wall portions 12C in a state where the upper ends are connected to the upper surface portion 12A of the main body 12 and the main body 12 is spaced apart in the width direction. ..

FIG. 12 is a perspective view of the end member 13 described with reference to FIGS. 2 and 3, and FIG. 13 shows a vertical cross-sectional view of the end member 13. Similar to the main body half member 14, the end member 13 formed by cutting an extruded product or a draw-formed product of aluminum or an aluminum alloy manufactured in a long dimension to a predetermined length dimension is a horizontal upper flange portion 30. And the horizontal lower flange portion 31 parallel to the upper flange portion 30, and the connecting portion 32 having a vertical wall shape by connecting the tips of the upper flange portion 30 and the lower flange portion 31 to each other. Therefore, the end member 13 has an internal space 33 surrounded by an upper flange portion 30, a lower flange portion 31, and a connecting portion 32, and has a U-shape having an overall shape that is horizontally open. It is a member of. On the upper surface 30A of the upper flange portion 30, a plurality of ridges 30B are arranged side by side at intervals in the width direction of the end member 13 which is the length direction of the main body 12 of the work scaffold plate 10. A plurality of ridges 31B are also arranged side by side on the lower surface 31A of the lower flange portion 31 at intervals in the width direction of the end member 13.

Further, the lower surface 30C of the upper flange portion 30 is formed with an upper protrusion 34A protruding toward the internal space 33, and the upper surface 31C of the lower flange portion 31 is provided with an upper protrusion 34A. A lower protrusion 34B protruding toward the internal space 33 is formed at the same position as the position in the width direction of 13. Since the end member 13 is formed by cutting an extruded product or a pultruded product of aluminum or an aluminum alloy manufactured in a long dimension into a predetermined length dimension as described above, the end member 13 is described above. The flange portion 30, the lower flange portion 31, the connecting portion 32, the internal space 33, the ridge 30B, the ridge 31B, the upper protrusion 34A, and the lower protrusion 34B are the widths of the main body 12 of the work scaffold plate 10. It is continuous over the entire length in the length direction of the end member 13 which is the direction.

The end member 13 having such a shape is arranged at each end portion in the length direction of the main body 12 of the work scaffolding plate 10 as described with reference to FIGS. 2 and 3 and the like. FIG. 6 showing the end member 13 is an enlarged plan view of a part of the work scaffolding plate 10, and as shown in FIG. 16 which is a cross section taken along line S16-S16 of FIG. 6, the end member 13 is shown. In the work scaffolding plate 10, the upper flange portion 30 is fitted on the upper side of the main body 12, the lower flange portion 31 is fitted on the lower side of the main body 12, and the lower flange portion 31 is fitted to each end of the main body 12 of the work scaffold plate 10 in the length direction. Be placed. Further, in the work for arranging the end members 13 at the respective ends of the main body 12 of the work scaffolding plate 10 in the length direction, the upper protrusion 34A and the lower protrusion 34B are placed on the end faces of the main body 12 in the length direction. It is performed in contact with 12J. Therefore, the upper protrusion 34A and the lower protrusion 34B serve as positioning portions of the end member 13 with respect to the main body 12, and each end member 13 has the upper protrusion 34A and the lower protrusion 34A. It is positioned and arranged with respect to the main body 12 by 34B, and after this positioning work, the upper flange portion 30 and the lower flange portion 31 of the end member 13 are joined to the main body 12 by welding.

As can be seen from FIG. 13, the amount of protrusion of the upper flange portion 30 from the lower surface 30C of the upper protrusion 34A is the same as the amount of protrusion of the lower flange portion 31 from the upper surface 31C of the lower protrusion 34B. The end member 13 according to the present embodiment has a vertically symmetrical line-symmetrical shape centered on a horizontal line passing through an upper and lower central portion of a connecting portion 32 which is a central portion in the height direction of the entire end member 13. Therefore, as described above, when the end members 13 are arranged at the respective ends of the main body 12 of the work scaffolding plate 10 in the length direction, the end members 13 are placed even if the end members 13 are turned upside down. As shown in FIG. 16, it can be arranged on the main body 12, and therefore, according to the present embodiment, the operator can easily arrange the end member 13 on the main body 12 without distinguishing between the upper and lower ends of the end member 13. can do. Further, the plurality of ridges 31B provided on the lower surface 31A of the lower flange portion 31 have a plurality of ridges 30B provided on the upper surface 30A of the upper flange portion 30 even if the end member 13 is turned upside down. Similarly, it functions as a non-slip for a worker who walks on the work scaffolding plate 10.

As described above, on the work scaffolding plate 10, two hook members 11 shown in FIGS. 2 and 3 and the like are provided at each end of the main body 12 in the length direction at intervals in the width direction of the main body 12. As shown in FIG. 14, the base portion 11A shown in FIG. 2 of these hook members 11 is fastened to the inner wall portion 12C of the main body 12 by bolts 35 and nuts 36 which are fasteners. Will be done. As can be seen from FIG. 3 which is a plan view of the work scaffolding plate 10, one of the four hook members 11 arranged at the respective end portions of the two diagonal lines in the work scaffolding plate 10 The two hook members 11 arranged at the respective end portions are in the width direction of the main body 12 of the work scaffolding plate 10 with respect to the two hook members 11 arranged at the respective end portions of the other diagonal lines. It is placed in a position shifted to. As a result, as shown in FIG. 17, the plurality of work scaffolding plates 10 are locked with the hook member 11 to the horizontal member 2C on the lower side of the building frame 2 constituting the temporary scaffolding 1 in FIG. By doing so, when these work scaffolding plates 10 are arranged in series in the length direction of the main body 12 of the work scaffolding plates 10 and arranged side by side, the hook members 11 of the work scaffolding plates 10 adjacent to each other are connected to the main body of the work scaffolding plate 10. It is designed so that it does not interfere with the width direction of the twelve.

In the work scaffolding plate 10 according to the present embodiment, as described above, each of the diagonal lines of the four hook members 11 arranged at the respective end portions of the two diagonal lines in the work scaffolding plate 10 The two hook members 11 arranged at the end portions of the work scaffolding plate 10 are arranged in the width direction of the main body 12 of the work scaffolding plate 10 with respect to the two hook members 11 arranged at the respective end portions of the other diagonal lines. As can be seen from FIG. 14, the two hook members 11 arranged at both ends in the length direction of the main body 12 on the same side in the width direction of the main body 12 are arranged as described above in order to arrange them in the displaced positions. Two inner wall portions 12C provided on the main body 12 so as to be offset in the width direction of the main body 12 are separately attached to the outer side surface and the inner side surface of the inner wall portion 12C. It is performed by the bolt 35 and the nut 36 which are the fasteners described above.

Explaining this with reference to FIG. 15, which is a partially enlarged view of FIG. 14, among the two hook members 11 arranged at both ends in the length direction of the main body 12 on the outer side surface of the inner wall portion 12C, The base portion 11A of one hook member 11 is attached by the bolt 35 and the nut 36, and the base portion 11A of the other hook member 11 is attached to the inner side surface of the inner wall portion 12C by the bolt 35 and the nut 36. In these mounting operations, a tool 40 such as a wrench inserted through the large hole 27 provided in the above-mentioned outer wall portion 12B of the main body 12 is fitted to the head 35A of the bolt 35, and the head 35A to the main body 12 The shaft portion 35B of the bolt 35 extending in the width direction of the bolt 35 is inserted into the hole 11D formed in the base portion 11A and the above-mentioned small hole 28 formed in the inner wall portion 12C, and is inserted through the small hole 28. This is done by screwing the nut 36 into the end of the protruding shaft 35B, by allowing the operator to rotate the bolt 35 with the tool 40 with one hand and stop the rotation of the nut 36 with the other hand. The hook member 11 is attached to the main body 12 of the work scaffolding plate 10. In this way, the work of attaching each hook member 11 to the main body 12 with bolts 35 and nuts 36 is performed on one hook member 11 at each end of the outer wall portion 12B and the inner wall portion 12C in the length direction. It is carried out for each of the large hole 27 and the small hole 28 provided respectively.

In FIG. 6, the hook member 11 after the hook member 11 is attached to the main body 12 of the work scaffolding plate 10 as described above, and the end member 13 arranged at the end portion in the length direction of the main body 12 The relationship is shown. As shown in FIG. 6, since the length dimension of the end member 13 in which the width direction of the main body 12 is the length direction is smaller than the width dimension of the main body 12, the length direction of the end member 13 Both end faces of the two hook members 11 face each other in the width direction of the main body 12, and there are gaps S1 and S2 between these end faces of the end member 13 and the two hook members 11. Is provided.

In the work of installing the work scaffolding plate 10 on the temporary scaffolding 1 of FIG. 1, a downward opening 11C formed in the tip portion 11B of the hook member 11 shown in FIG. 2 is provided in the building frame 2 of the temporary scaffolding 1. It is performed by fitting and locking the lower horizontal member 2C from above, and as shown in FIG. 4, the hook member 11 has a downward opening 11C to escape from the horizontal member 2C. A lock member 41 for prevention is arranged. The lock member 41 is formed with a curved elongated hole-shaped guide hole 41A into which two pins 42 fixed to the hook member 11 are inserted, and the lock member is guided by the guide hole 41A and floats. By closing a part of the lower part of the downward opening 11C by 41, the downward opening 11C is prevented from escaping from the horizontal member 2C.

As can be seen from the above description, when a plurality of work scaffolding plates 10 are installed on the temporary scaffolding 1, the upper surface portion 12A of the main body 12 of these work scaffolding plates 10 extends over the entire length in the length direction of the main body 12. Since the continuous groove 23 is formed, the water due to rain or the like that has fallen in rainy weather reaches the end portion of the groove 23 in the length direction of the main body 12 after falling into the groove 23. As described with reference to FIG. 16, the end surface 12J in the length direction of the main body 12 is continuously formed over the entire length of the end member 13 in the length direction, and the above-mentioned internal space 33 of the end member 13 is formed. The upper protrusion 34A and the lower protrusion 34B protruding toward the surface are in contact with each other. Of these upper protrusions 34A and lower protrusions 34B, the upper protrusion 34A protrudes from the lower surface 30C of the upper flange portion 30 of the end member 13. Since the amount is smaller than the depth dimension of the groove 23 from the surface of the upper surface portion 12A of the main body 12 with which the lower surface 30C of the upper flange portion 30 is in contact, the amount is at the end portion of the groove 23 in the length direction of the main body 12. The water that has reached falls and enters the internal space 33 of the end member 13 without being blocked by the upper protrusion 34A. Therefore, the internal space 33 is a space provided in the end member 13 for water to enter.

As described above, since the protrusion amount of the upper protrusion 34A provided on the end member 13 and the protrusion amount of the lower protrusion 34B are the same, the end member 13 is turned upside down and the main body 12 of the work scaffold plate 10 is used. Even if it is arranged at the end in the length direction, the water that has reached the end in the length direction of the main body 12 in the groove 23 falls into the internal space 33 of the end member 13 without being blocked by the lower protrusion 34B. It can be infiltrated.

Then, as described with reference to FIG. 6, both end faces in the length direction of the end member 13 which is the width direction of the main body 12 face each other in the width direction of the two hook members 11 and the main body 12. Since the gaps S1 and S2 are provided between these end faces and the two hook members 11, the water that has fallen and entered into the internal space 33 of the end member 13 can be removed from these gaps S1 and S2. It will be discharged to the outside of the work scaffolding plate 10. Therefore, according to the work scaffolding plate 10 of the present embodiment, water such as rainwater does not collect on the upper surface portion 12A of the main body 12 of the work scaffolding plate 10, and in cold regions and winter, this upper surface portion No ice with frozen water is generated in 12A, and therefore, a worker walking on the main body 12 can perform a predetermined work without being affected by water or ice.

Further, since the number of grooves 23 provided in the upper surface portion 12A of the main body 12 of the work scaffolding plate 10 is a plurality of grooves 23 parallel to each other and 6 in the present embodiment, the number of grooves 23 is increased from the upper surface portion 12A of the main body 12. A large amount of water can be discharged.

Further, the end member 13 used for the work scaffolding plate 10 of the present embodiment comes into contact with the end surface 12J in the length direction of the main body 12 and has an upper protrusion for positioning the end member 13 with respect to the main body 12. Since 34A and the lower protrusion 34B are provided, when the end member 13 is connected to the main body 12 by welding or the like, the end member 13 is positioned and arranged at a predetermined position in the length direction of the main body 12 with respect to the main body 12. After that, this joining work can be performed. Further, in the end member 13, both the flange portion 30 and the lower flange portion 31 are positioned with respect to the main body 12 by the upper protrusion 34A and the lower protrusion 34B, so that this positioning is accurate at the upper and lower ends of the end member 13. Can be done.

Further, even if the end member 13 is provided with the upper protrusion 34A for positioning and arranging the end member 13 at a predetermined position in the length direction of the main body 12 with respect to the main body 12, as described above, as described above. Since the amount of protrusion of the upper protrusion 34A is smaller than the depth dimension of the groove 23, the water that reaches the end of the main body 12 in the groove 23 in the length direction is not blocked by the upper protrusion 34A and is not blocked by the upper protrusion 34A. It can be dropped and penetrated into the internal space 33 of the member 13, and the same effect can be obtained even when the end member 13 is turned upside down and arranged at the end of the main body 12 in the length direction.

Further, as described with reference to FIG. 13, the end member 13 has a vertically symmetrical line-symmetrical shape centered on the horizontal line passing through the central portion in the height direction of the entire end member 13, so that the end member 13 has an end as described above. When arranging the member 13 at each end of the main body 12 of the work scaffold plate 10 in the length direction, this arrangement work can be performed without distinguishing the top and bottom of the end member 13, and therefore, the production of the work scaffold plate 10 can be performed. The work can be facilitated.

Further, as shown in FIG. 14, the main body 12 of the work scaffolding plate 10 has a position corresponding to two grooves 23A among the six grooves 23 provided on the upper surface portion 12A of the main body 12. Since the rib portions 24 extending downward from the groove 23A are provided, the strength of the upper surface portion 12A of the main body 12 can be increased by the reinforcing action of these rib portions 24.

Further, in the work scaffolding plate 10 of the present embodiment, as shown in FIG. 15, the hook member 11 is connected to the inner wall portion 12C whose upper end is connected to the upper surface portion 12A of the main body 12 by bolts 35 and nuts 36. Since the inner wall portion 12C is fixed and is formed so as to be displaced inward in the width direction of the main body 12 from the outer wall portion 12B provided at the end portion in the width direction of the main body 12, the hook member 11 is formed together with the nut 36. Even if the bolt 35, which is a fastener for fastening to the main body 12, has a shaft portion 35B having a length in the width direction of the main body 12, the entire bolt 35 and nut 36 can be used. It can be arranged within the width dimension of the main body 12 on the lower side of the upper surface portion 12A of the main body 12.

Therefore, the bolts 35 and the nuts 36 are not exposed to the outside from the widthwise end of the main body 12 of the work scaffolding plate 10, and therefore, as shown in FIG. 17, the plurality of work scaffolding plates 10 are exposed. When these work scaffolding plates 10 are arranged side by side in the width direction of the main body 12 and installed on the temporary scaffolding 1 of FIG. 1, they are not affected by the bolts 35 and nuts 36, and the main body 12 of the work scaffolding plate 10 is not affected. It becomes possible to install each other by eliminating or reducing the gap generated between these main bodies 12. Further, since the bolt 35 and the nut 36 are not exposed to the outside from the end portion in the width direction of the main body 12, it is prevented that an unexpected external force or the like acts on the bolt 35 and the nut 36 to loosen the bolt 35 and the nut 36. can do.

Further, in the present embodiment, since the outer wall portion 12B of the main body 12 is provided with a large hole 27 into which a tool 40 such as a wrench for rotating the bolt 35 can be inserted, the outer wall portion 12B is more than the outer wall portion 12B. The hook member 11 can be attached to the inner wall portion 12C formed inside the main body 12 in the width direction by the bolt 35 and the nut 36.

Further, as shown in FIG. 15, the upper and lower end portions of the inner wall portion 12C are connected to the upper and lower end portions of the outer wall portion 12B by the upper surface portion 12A and the lower surface portion 12D of the main body 12, and therefore. The inner wall portion 12C has a sufficiently high strength, and since the hook member 11 is attached to the inner wall portion 12C by the bolt 35 and the nut 36, the attachment strength of the hook member 11 to the main body 12 is sufficient. Can be made larger.

Further, as shown in FIG. 15, the inner wall portion 12C is formed between the thin-walled portions 12G and 12H connected to the upper surface portion 12A and the lower surface portion 12D of the main body 12 and these thin-walled portions 12G and 12H. It is composed of a thick portion 12I having a thickness larger than that of the thin portions 12G and 12H, and the base portion 11A of the hook member 11 can be attached by the bolt 35 and the nut 36 with the thick portion 12I. Since this is done, the attachment strength of the hook member 11 to the main body 12 can be further increased sufficiently.

Further, in the present embodiment, as shown in FIG. 15, the lower surface portion 12D of the main body 12 is attached to the outer side surface and the inner side surface of the inner wall portion 12C by bolts 35 and nuts 36, respectively. Of the two hook members 11, a recess 12E into which the lower portion of the base portion 11A of one hook member 11 attached to the outer side surface of the inner wall portion 12C is fitted is provided, and the outer wall is provided from the lower surface portion 12D of the main body 12. A portion that extends to the side opposite to the portion 12B side and is substantially a part of the lower surface portion 12D of the main body 12 (a portion corresponding to the protruding portion 20 of the main body half member 14 shown in FIGS. 9 and 10). ) Is provided with a recess 12F into which the lower portion of the base portion 11A of the other hook member 11 attached to the inner side surface of the inner wall portion 12C is fitted. Therefore, before these hook members 11 are attached to the inner wall portion 12C with bolts 35 and nuts 36, these hook members 11 can be made to stand on their own by the recesses 12E and 12F, and therefore, these hook members 11 can be made to stand on the inner wall portion 12C. The operator can easily carry out the work of attaching the hook member 11 with the bolt 35, the nut 36, and the tool 40.

In the embodiment described above, of the head 35A of the bolt 35 and the nut 36, the head 35A of the bolt 35 is outside the width direction of the main body 12 of the work scaffolding plate 10, and the nut 36 is in the width direction of the main body 12. Each hook member 11 was attached to the inner wall portion 12C by the bolt 35 and the nut 36, but the positions of the head 35A and the nut 36 of the bolt 35 in the width direction of the main body 12 were reversed from the above. The nut 36 may be rotated by the tool 40 inserted through the large hole 27 of the outer wall portion 12B.

Further, the fastener for fastening the hook member 11 to the inner wall portion 12C of the main body 12 may be a rivet whose axial direction is the width direction of the main body 12.

The present invention can be used for a work scaffold board installed and used in a temporary scaffold constructed at a work site such as construction or civil engineering.

1 Temporary scaffolding 2C Horizontal member that is a horizontal member of the temporary scaffolding 10 Work scaffolding board 11 Hook member 12 Main body of the work scaffolding board 12A Upper surface of the main body 12B Outer wall of the main body 12C With the wall of the main body to which the hook member is fastened Inner wall part 12D Lower surface part of the main body 12J End face in the length direction of the main body 13 End member 23, 23A Groove 24 Rib part 30 Upper flange part 30C Lower surface 31 Lower flange part 31C Upper surface 32 Connecting part 33 Internal space 34A Upper protrusion 34B Lower protrusions 35, 36 Bolts and nuts that are fasteners S1, S2 Gap

Claims (10)

Two hook members are arranged at the main body and each end of the main body in the length direction at intervals in the width direction of the main body, and are locked to the horizontal member of the temporary scaffold. In a work scaffolding plate configured to include an end member arranged between the two hook members at each end in the length direction.
A work scaffolding plate characterized in that a groove for discharging water accumulated in the upper surface portion is formed on the upper surface portion of the main body. The work scaffold plate according to claim 1, wherein the groove is continuously formed over the entire length of the main body in the length direction of the main body. .. In the work scaffolding plate according to claim 2, the end member includes an upper flange fitted on the upper side of the main body, a lower flange fitted on the lower side of the main body, an upper flange portion, and the lower portion. It has a connecting portion for connecting the flange portions, and the end portion of the groove opens toward the internal space of the end member surrounded by the upper flange portion, the lower flange portion, and the connecting portion. The work scaffolding plate is characterized in that the internal space is a space in which the water falling from the end of the groove enters. In the work scaffolding plate according to claim 3, both end faces of the end members of the main body in the width direction face the two hook members and the end faces of both of the main bodies in the width direction. Of these, a work scaffolding plate characterized in that a gap is provided between at least one end face and one hook member. In the work scaffolding plate according to claim 3 or 4, at least one of the lower surface of the upper flange portion and the upper surface of the lower flange portion is provided with a protrusion protruding toward the internal space, and the protrusion is provided. A work scaffolding plate characterized in that the end member is positioned and arranged on the main body in the length direction of the main body by abutting on the end surface of the main body in the length direction. In the work scaffold plate according to claim 5, the protrusion is provided on the lower surface of the upper flange portion, and the protrusion is in the length direction of the end member which is the width direction of the main body. The amount of protrusion of the upper flange portion of the protrusion from the lower surface to the internal space side of the protrusion is the upper surface portion of the main body in contact with the lower surface of the upper flange portion. A work scaffold plate characterized in that it is smaller than the depth dimension of the groove from the surface of the. The work scaffolding plate according to any one of claims 1 to 6, wherein the main body is provided with a rib portion extending downward at a position corresponding to a position where the groove is formed. Work scaffolding board. The work scaffolding plate according to any one of claims 1 to 7, wherein a plurality of the grooves are provided in parallel. In the work scaffolding plate according to any one of claims 1 to 8, the hook member is fastened to the main body by a fastener, and the entire fastener is placed on the lower side of the upper surface portion of the main body. A work scaffolding board characterized in that it is arranged within the width dimension of the main body. In the work scaffolding plate according to claim 9, the main body is provided with a wall portion connected to the upper surface portion at a position shifted inward from the widthwise end portion of the upper surface portion. A work scaffolding plate characterized in that the hook member is fastened to the wall portion by the fastener.

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