JP2021011747A - Work scaffolding board - Google Patents

Abstract

To provide a work scaffolding board which enables easy manufacture of end members provided with positioning parts.SOLUTION: A work scaffolding plate 10 is constituted to include a main body 11 whose longitudinal dimension is larger than the width direction dimension orthogonal to the longitudinal direction, and end members 12 arranged on both sides of the main body 11 in the longitudinal direction. An upper surface of the end member 12 is provided with a first positioning portion with a protrusion 23 or the like, and a lower surface of the end member 12 is provided with a second positioning portion with a recessed portion 28 or the like, and positions in the longitudinal direction with respect to the first positioning portion and the second positioning portion are positions where the plurality of work scaffolding boards 10 stacked vertically are positioned in the longitudinal direction by the first positioning portion and the second positioning portion, and the first positioning member has the same shape and is continuously formed over the entire length of the end member 12 in the width direction, and the second positioning portion also has the same shape and is continuously formed over the entire length of the end member 12 in the width direction.SELECTED DRAWING: Figure 11

Description

The present invention relates to a work scaffolding board used as a component of this temporary scaffolding when a worker rides on it to perform work or walk when constructing a temporary scaffolding at a work site such as a construction work site or a civil engineering work site. ..

When constructing a temporary scaffold at a work site such as a construction work site or a civil engineering work site, a work scaffold board for a worker to ride on and perform work or walk is used as a component of the temporary scaffold. The work scaffolding plate shown in Patent Document 1 below has a main body whose longitudinal dimension is larger than the width direction dimension orthogonal to the longitudinal direction, and ends arranged on both sides of the main body in the longitudinal direction. It is configured to include members, and a first positioning portion by a convex portion is provided on the upper surface of each end member, and a second positioning portion by a convex portion is provided on the lower surface of each end member. The positions of the first positioning portion and the second positioning portion in the longitudinal direction are such that a plurality of work scaffolding plates stacked one above the other are contacted with the first positioning portion and the second positioning portion. It is a position that can be positioned in the longitudinal direction by contact. Therefore, at a work site or the like, a plurality of work scaffolding plates can be positioned in the longitudinal direction and stacked vertically.

JP-A-2009-41328

In the above-mentioned work scaffolding plate, by embossing the end members, each end member is provided with a first positioning portion and a second positioning portion which are convex portions, and the manufacturing work of the entire work scaffolding plate is performed. In order to simplify the process and reduce the manufacturing cost, it is necessary to devise a method for easily manufacturing the end member provided with these positioning portions.

An object of the present invention is to provide a work scaffold plate that enables easy production of an end member provided with a positioning portion.

The work scaffolding plate according to the present invention includes a main body whose longitudinal dimension is larger than the dimension in the width direction orthogonal to the longitudinal direction, and end members arranged on both sides of the main body in the longitudinal direction. The first positioning portion is provided on the upper surface of each of the end members, and the second positioning portion is provided on the lower surface of each of the end members. The position in the longitudinal direction of the portion and the second positioning portion is a position where a plurality of vertically stacked sheets are positioned in the longitudinal direction by the first positioning portion and the second positioning portion. In the work scaffolding plate, the first positioning member has the same shape and is continuously formed over the entire length of the end member in the width direction, and the second positioning portion also has the same shape. It is characterized in that the end member is continuously formed over the entire length in the width direction of the end member.

As described above, in the work scaffolding plate according to the present invention, the first positioning portion provided on the upper surface of the end member has the same shape and is continuously formed over the entire length in the width direction of the end member. The second positioning portion provided on the lower surface of the end member also has the same shape and is continuously formed over the entire length in the width direction of the end member. Therefore, for example, aluminum or an aluminum alloy. After producing a long-sized end member material provided with a first positioning portion and a second positioning portion by extrusion molding or drawing molding, the first positioning is performed by cutting the end member material to a predetermined size. It becomes possible to easily manufacture a large number of end members provided with a portion and a second positioning portion, which makes it possible to simplify the manufacturing work of the entire work scaffolding plate and reduce the manufacturing cost.

Further, in order to manufacture an end member provided with a first positioning portion and a second positioning portion, the end member is made of sheet metal, and the sheet metal is pressed to form a first positioning portion on the end member. A second positioning portion may be provided, and even when the end member provided with the first positioning portion and the second positioning portion is manufactured in this way, the first positioning portion provided on the upper surface of the end member remains. , The second positioning portion provided on the lower surface of the end member is also formed in the same shape and continuously over the entire length in the width direction of the end member. Since it is formed continuously over the entire length, it is possible to easily manufacture a mold for press working to form these positioning portions, whereby the first positioning portion can be manufactured. An end member provided with the second positioning portion and the second positioning portion can also be easily manufactured, and the manufacturing work of the entire work scaffold plate can be simplified and the manufacturing cost can be reduced.

In the above invention, when a plurality of work scaffolding plates are stacked one above the other, the first positioning portion of the lower work scaffolding plate and the second positioning portion of the upper work scaffolding plate cause these. In order to ensure that the work scaffolding plate is positioned in the longitudinal direction, both the first positioning portion and the second positioning portion are formed as protrusions, and these protrusions are displaced in the longitudinal direction and abut against each other. , The work scaffolding plates may be positioned in the longitudinal direction, or one of the first positioning portion and the second positioning portion may be a protruding portion and the other positioning portion may be recessed. The work scaffolding plates may be positioned in the longitudinal direction by forming the recessed portion and fitting the protrusion into the recessed portion.

As in the latter case, of the first positioning portion and the second positioning portion, one positioning portion is a protruding protrusion, the other positioning portion is a recessed recess, and the protrusion is fitted into the recess. When the work scaffolding plates are positioned in the longitudinal direction, the protrusion may be a square protrusion protruding in a square shape, and the recess may be a square recess. Alternatively, the protrusion may be a curved protrusion that protrudes in a curved shape, and the recess may be a curved recess that is recessed in a curved shape.

If the protrusion is a curved protrusion that protrudes in a curved shape and the recess is a curved recess that is recessed in a curved shape, when a plurality of work scaffolding plates are stacked one above the other and positioned in the longitudinal direction. Due to the guiding action of the curved shape of the protrusion and the curved shape of the recess, the protrusion can be easily fitted to the recess.

Further, in the work scaffolding plate according to the present invention, a plurality of protrusions having a downward protrusion amount are provided on the lower surface of each end member at intervals in the longitudinal direction, and one of them is turned upside down. When the two work scaffolding plates are stacked one above the other, the plurality of protrusions are engaged with each other in the longitudinal direction so that the two working scaffolding plates are positioned in the longitudinal direction. You may.

According to this, when stacking a plurality of work scaffolding boards up and down, the bottom work scaffolding board and the second work scaffolding board from the bottom are separated by turning the bottom work scaffolding board upside down. By causing the plurality of protrusions to be in a meshed state displaced in the longitudinal direction, the positioning state can be achieved in the longitudinal direction.

The distance between the plurality of protrusions in the longitudinal direction may be the same as or substantially the same as the dimension in the longitudinal direction for these protrusions, or the distance between the plurality of protrusions may be set to the distance between these protrusions. It may be larger than the longitudinal dimension of the portion.

When the distance between the plurality of protrusions is made larger than the longitudinal dimension of these protrusions, the lowermost working scaffolding plate and the second working scaffolding plate from the bottom are positioned in the longitudinal direction. Therefore, it becomes possible to easily perform the work of bringing the plurality of protrusions into the meshed state displaced in the longitudinal direction.

Further, in the work scaffolding plate according to the present invention, an upper extending portion and a lower extending portion extending toward the main body of the working scaffolding plate are provided at the upper and lower portions of the respective end members, and the upper extending portion is provided. The first positioning portion is provided on the upper surface, the second positioning portion is provided on the lower surface of the lower extending portion, and the upper and lower thickness dimensions are extended upward on at least a part of the lower extending portion. A thick portion larger than the portion is provided, at least a part of this thick portion is projected downward from the lower surface of the main body of the work scaffold plate, and this protruding portion is joined to the lower surface of the main body of the work scaffold plate by welding. You may try to do it.

According to this, since the end member is welded to the lower surface of the main body of the work scaffolding plate at the thick portion provided on the end member, the end member is bonded to the main body of the work scaffolding plate by welding. It can be enlarged and combined.

Further, when the work scaffold plate according to the present invention has an end gap cover connected to each end member on the side opposite to the main body of the work scaffold plate in the longitudinal direction, these The end gap cover is provided with a locking portion extending downward, and the end member is provided with a receiving portion that is open upward, and the locking portion is inserted into this receiving portion from above. This locking portion may be locked to the receiving portion.

According to this, when connecting the end gap cover to each end member on the side opposite to the main body of the work scaffolding plate in the longitudinal direction, the locking portion of the end gap cover is attached to the receiving portion of the end member. The work for inserting and locking can be easily carried out by performing only a simple work of lowering the end gap cover from above with respect to the end member.

Then, in this way, in order to connect the end gap cover to the end member on the side opposite to the main body of the work scaffolding plate in the longitudinal direction, the locking portion of the end gap cover is inserted into the receiving portion of the end member. In the case of a locking structure, the receiving portion of the end member is formed on the standing wall portion provided on the end member, and the end gap cover is provided at a portion displaced in the vertical direction from the receiving portion. A rear wall portion that comes into surface contact with the standing wall portion is provided, and the standing wall portion and the rear wall portion are connected by a coupling tool having a penetrating portion that penetrates the standing wall portion and the rear wall portion, thereby covering the end member and the end gap. And may be connected.

Further, the standing wall portion of the end member may be provided with a drain hole for draining the water accumulated in the main body of the work scaffolding plate when the end member is turned upside down to the end gap cover side.

According to this, when multiple work scaffolding boards are stacked upside down with only the bottom work scaffolding board turned upside down, even if water such as rainwater collects on the main body of the bottom work scaffolding board, this water Can be drained from the drain hole provided in the vertical wall portion of the end member to the end gap cover side.

The work scaffolding board according to the present invention described above can be used for a temporary scaffolding constructed for any purpose. Therefore, the temporary scaffolding using the work scaffolding board according to the present invention as a component is used for construction work. It may be a temporary scaffold for the purpose, a temporary scaffold for the dismantling work, a temporary scaffold for the painting work, or a temporary scaffold for the civil engineering work or the like.

According to the present invention, it is possible to easily manufacture an end member provided with a positioning portion.

FIG. 1 is an overall perspective view showing a temporary scaffold constructed by using the work scaffold plate according to the embodiment of the present invention. FIG. 2 is a plan view of the work scaffolding board. FIG. 3 is a front perspective view of the work scaffolding board. FIG. 4 is a perspective view of the back side of the work scaffolding board. 5A and 5B are views showing the main body of the work scaffolding plate in an exploded manner, where FIG. 5A is a plan view and FIG. 5B is a side view. FIG. 6 is a perspective view of the end member. FIG. 7 is a plan view showing a connecting structure between the main body of the work scaffolding plate and the end members. FIG. 8 is a back view showing a connecting structure between the main body and the end member of the work scaffolding plate. FIG. 9 is a vertical cross-sectional view showing a connecting structure of the end member and the end gap cover. FIG. 10 is a front view showing a state in which a large number of work scaffolding boards are stacked one above the other. FIG. 11 is an enlarged view of a part of FIG. 10, in which the main body of the work scaffolding plate, the hook member, and the like are shown by a two-dot chain line, and the end member and the end gap cover are shown by a solid line. is there.

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 board according to the present embodiment, and the temporary scaffold 1 is constructed at a construction work site of a building and is average. A plurality of building frames 2 provided, a work scaffolding board 10 horizontally bridged between these building frames 2, a brace 3 diagonally bridged between the building frames 2, and a building frame. It is configured to include a handrail 4 that is horizontally bridged between the two. The handrail 4 is arranged on the back side of the temporary scaffold 1 opposite to the building, and the skirting board 5 having the left-right direction as the longitudinal direction is the side end of the work scaffold plate 10 on the back side. It is attached to the portion along the length direction of the work scaffolding plate 10. As a result, the skirting board 5 prevents workers who perform work or the like on the work scaffolding board 10 and tools or the like placed on the work scaffolding board 10 from falling from the back side of the temporary scaffolding board 1. Is prevented by.

2A and 2B show a plan view of the work scaffolding plate 10 according to the embodiment of the present invention, FIG. 3 is a front side perspective view of the work scaffolding plate 10, and FIG. 4 is a back surface of the work scaffolding plate 10. It is a side perspective view. The work scaffolding plate 10 is configured to include a main body 11 and two end members 12 arranged on both sides of the main body 11, and these end members 12 for the main body 11 are arranged. The direction is the longitudinal direction of the work scaffolding plate 10, and the dimension of the main body 11 in this longitudinal direction is larger than the dimension of the main body 11 in the width direction orthogonal to the longitudinal direction. An end gap cover 13 is connected to each end member 12 on the side opposite to the main body 11 in the longitudinal direction. Therefore, the work scaffolding plate 10 according to the present embodiment is the main body 11 and the main body. It is composed of two end members 12 arranged on both sides in the longitudinal direction of 11 and two end gap covers 13 arranged on opposite sides of the main body 11 to these end members 12 in the longitudinal direction. It has been done.

FIG. 5 shows only the main body 11, FIG. 5 (A) is a plan view showing the main body 11 in an exploded manner, and FIG. 5 (B) shows the main body 11 in an exploded manner. It is a side view. The main body 11 is formed by joining two main body half members 14 having a symmetrical shape in the width direction about the central portion in the width direction of the main body 11 in the width direction, and each main body 11 is formed. The half member 14 includes a surface portion 14B in which a large number of circular protrusions 14A for preventing slipping are regularly provided, and a first side wall portion 14C and a second side wall portion extending downward from both sides in the width direction of the surface portion 14B. 14D and a rib portion 14E extending downward from the surface portion 14B to the first side wall portion 14C and the second side wall portion 14D between the first side wall portion 14C and the second side wall portion 14D. It has become. Further, the main body half member 14 is an extruded product or a pultruded product of aluminum or an aluminum alloy, and after manufacturing a long-sized extruded product material or a pultruded product material of aluminum or an aluminum alloy, the material is subjected to the longitudinal length. By cutting at intervals of predetermined dimensions in the same direction as the direction, a large number of prototype members for the main body half member 14 are manufactured, and then a non-slip circular protrusion is formed on the surface portion 14B of these prototype members. In the longitudinal direction of the surface portion 14B, the second side wall portion 14D, and the rib portion 14E of the prototype member, leaving both ends in the longitudinal direction of the first side wall portion 14C in the prototype member and the pressing work for forming the 14A. A large number of main body half members 14 are manufactured by cutting both end portions a little and performing the work for forming the cutout portion 15 for inserting and arranging the end member 12 by this cutting operation.

As shown in FIG. 5, the two main body half members 14 face each other in the width direction with the first side wall portion 14C facing each other, and face each other in the width direction with a slight gap. The narrow plate-shaped horizontal member 16 shown in FIGS. 4 and 5 (B) is bridged between the first side wall portion 14C, the second side wall portion 14D, and the rib portion 14E of the main body half member 14, and is shown in FIG. As shown in 4, the horizontal members 16 arranged in the longitudinal direction are welded or rivet to the first side wall portion 14C, the second side wall portion 14D, and the rib portion 14E of the main body half member 14, respectively. The main body 11 of the work scaffolding plate 10 is completed by connecting with a connecting tool such as.

As shown in FIG. 3, a hook member 17 having a recess 17A opened downward is attached to the first side wall portion 14C arranged outside in the width direction of the main body 11 by bolts and nuts. Attached by the tool 18, the hook member 17 is shown in FIG. 2 at both end portions of the first side wall portion 14C provided on both outer sides in the width direction of the main body 11 in the longitudinal direction. As you can see, a total of four are provided. As shown in FIG. 1, these hook members 17 are attached to the horizontal members 2A provided on the respective building frames 2 from above when the work scaffolding plates 10 are bridged between the building frames 2. By fitting the recess 17A, it is locked to the horizontal member 2A, whereby the work scaffolding plate 10 is horizontally bridged between the building frames 2.

As shown in FIG. 3, a floating member 19 is arranged on the side surface of each hook member 17, and one end of the floating member 19 is coupled to the hook member 17. A curved elongated hole 19A into which two pins 19B are inserted is formed, and the floating member 19 is prevented from coming off from the pin 19B by a flange portion formed at the other end of these pins 19B. .. Since the floating member 19 can swing with respect to the hook member 17 by the guiding action of the pin 19B and the curved elongated hole 19A, the floating member 19 is provided on the hook member 17 by swinging upward. When the entire opening of the recess 17A is opened, the recess 17A is fitted into the horizontal member 2A from above, and then the floating member 19 is allowed to swing downward to be one of the openings of the recess 17A. The hook member 17 is locked to the horizontal member 2A by closing the portion with the floating member 19.

Further, as can be seen from FIG. 2, of the four hook members 17 provided at the four corners of the work scaffold plate 10, two hook members arranged at one end in the longitudinal direction of the work scaffold plate 10. 17 is attached to the first side wall portion 14C at a position slightly deviated in the width direction of the work scaffolding plate 10 by attaching these hook members 17 separately to the inner side surface and the outer side surface of the first side wall portion 14C. The two hook members 17 arranged at the other end in the longitudinal direction of the work scaffolding plate 10 are also attached by the hook members 17 separately on the inner side surface and the outer side surface of the first side wall portion 14C. As a result, the work scaffolding plate 10 is attached to the first side wall portion 14C at a position slightly deviated in the width direction. Further, the arrangement positions of the two hook members 17 arranged at one end in the width direction of the work scaffolding plate 10 are such that the surface of the first side wall portion 14C to which these hook members 17 are attached is inside. Since it is divided into the outer side surfaces, it is slightly displaced in the width direction of the work scaffolding plate 10, and the arrangement positions of the two hook members 17 arranged at the other end in the width direction of the work scaffolding plate 10 are also The surface of the first side wall portion 14C to which these hook members 17 are attached is divided into inner and outer side surfaces, so that the work scaffolding plate 10 is slightly displaced in the width direction. As a result, as shown in FIG. 1, even if the two work scaffolding plates 10 are arranged in series in the longitudinal direction of the work scaffolding plates 10, they are provided on the work scaffolding plates 10. It is avoided that the hook members 17 are interfering with each other in the width direction.

As shown in FIG. 5B, flange portions 14F and 14G protruding from the first side wall portion 14C to both sides in the width direction are provided at the upper end portion and the lower end portion of the first side wall portion 14C. Therefore, the hook member 17 is vertically positioned by these flange portions 14F and 14G and is arranged on the first side wall portion 14C. Of the flange portions 14F and 14G, the upper flange portion 14F is continuous with the surface portion 14B described above. Further, as shown in FIG. 5B, a flange portion 14H protruding inward in the width direction from the second side wall portion 14D is provided at the lower end portion of the second side wall portion 14D, and ribs are provided. A flange portion 14I protruding from the rib portion 14E to both sides in the width direction is provided at the lower end portion of the portion 14E.

FIG. 6 is a perspective view showing the entire end member 12 described above, FIG. 9 shows a vertical cross-sectional view of the end member 12, and FIG. 9 shows the end member 12 and the above-mentioned end gap. A connection structure with the cover 13 is also shown. The end member 12 is an extruded product or a pultruded product of aluminum or an aluminum alloy, similarly to the main body half member 14 described above, and a long-sized extruded product material or a pultruded product material of aluminum or an aluminum alloy is manufactured. Later, by cutting this material at intervals of predetermined dimensions in the same direction as the width direction, a large number of prototype members for the end member 12 are manufactured, and then these prototype members are shown in FIG. A large number of end members 12 are manufactured by performing a process of forming the through hole 20A. Therefore, the end member 12 has a vertical cross-sectional shape shown in FIG. 9 that is continuous over the entire length of the work scaffolding plate 10 in the width direction.

As shown in FIG. 9, the end member 12 includes a standing wall portion 20 provided with the above-mentioned through hole 20A and an upper extending portion 21 extending from the upper portion of the standing wall portion 20 toward the main body 11. And a lower extending portion 22 extending from the lower part of the standing wall portion 20 toward the main body 11. The upper extending portion 21 is provided with a protrusion 23 which is a first positioning portion provided on the upper surface of the end member 12 at a position close to the standing wall portion 20 and which protrudes upward. Reference numeral 23 denotes a curved protrusion that protrudes upward in a curved shape. Further, the upper extending portion 21 is provided with two square-shaped protruding portions 24 and 25 protruding upward at a position separated from the protruding portion 23 in the longitudinal direction.

The lower extending portion 22 is connected to a horizontal portion 26 connected to the lower end of the vertical wall portion 20, a bent portion 27 bent downward from the end portion of the horizontal portion 26, and a lower end portion of the bent portion 27. It has a recessed portion 28 that is formed, and the recessed portion 28 that is recessed upward is a second positioning portion provided on the lower surface of the end member 12, and has a curved shape. It is a curved recess that is recessed upward. The recessed portion 28 is formed at a position corresponding to the protrusion 23 provided on the upper extending portion 21 in the longitudinal direction of the work scaffolding plate 10. Further, from the recessed portion 28, an extended portion 29 having a horizontal lower surface extends toward the main body 11, and from the end of the extended portion 29, an inclined portion 30 extends obliquely upward, and the inclined portion 30 extends obliquely upward. A horizontal portion 31 extending horizontally is provided at an end portion of the portion 30.

Two square-shaped protrusions 32, 33 having a downward protrusion amount are provided on the extension portion 29 at intervals in the longitudinal direction of the work scaffold plate 10, and the protrusions 32, 33 have the same degree of protrusion. The distance in the longitudinal direction is dimension L, which is larger than the dimension T in the longitudinal direction for the respective protrusions 32, 33. Further, in the stretched portion 29, the portion including the protrusion 33 is a thick portion 34 having a large vertical dimension, and the vertical thickness dimension of the thick portion 34 is described above. The size is larger than the upper and lower thickness dimensions of the upper extending portion 21 including the protruding portion 23 and the protruding portions 24 and 25. Further, at the end of the horizontal portion 31, a protruding portion 35 that protrudes downward in a square shape is provided.

Since the end member 12 formed as described above is an extruded product or a pultruded product of aluminum or an aluminum alloy as described above, the standing wall portion 20, the upper extending portion 21, and the lower extending portion 22 are formed. Further, the protrusions 23 and the protrusions 24 and 25 provided on the upper extension portion 21, the recesses 28, the protrusions 32 and 33, the protrusions 35 and the like provided on the lower extension portion 22 and the like. Each of the above has the same shape and is continuous over the entire length of the work scaffolding plate 10 in the width direction.

As for the length of the end member 12 in the width direction, as described above, the two main body half members 14 are faced in the width direction with a slight gap, and these main body half members 14 are connected by the horizontal member 16. The length corresponds to the width direction dimension of the notch portion 15 in FIG. 5 when the main body 11 is formed, and end members 12 are provided at each of the notch portions 15 formed at both ends in the longitudinal direction of the main body 11. Inserted and placed. After performing this insertion arrangement, the ends of the upper extending portions 21 of the respective end members 12 form the main body 11 as shown in FIG. 7, which shows the surface side of the work scaffolding plate 10. It is connected to the front surface portion 14B of the main body half member 14 by a plurality of welded portions 36, and the end portion of the lower extension portion 22 of each end member 12 indicates the back surface side of the work scaffolding plate 10. As shown in FIG. 8, the second side wall portion 14D and the rib portion 14E of the two main body half members 14 forming the main body 11 are joined by a welded portion 37.

As shown in FIG. 9, the end portion of the upper extending portion 21 connected to the surface portion 14B of the main body half member 14 by the welded portion 36 has a rectangular shape and protrudes upward. Is provided, and in the protruding portion 25, the upper extending portion 21 of the end member 12 is connected to the surface portion 14B of the main body half member 14 by the welded portion 36, so that a large welding area by the protruding portion 25 is secured. The upper extending portion 21 of the end member 12 and the surface portion 14B of the main body half member 14 can be joined with a large strength. Further, as shown in FIG. 9, the end portion of the lower extending portion 22 connected to the second side wall portion 14D and the rib portion 14E of the main body half member 14 at the welded portion 37 has a square shape. A protruding portion 35 projecting downward is provided, and flange portions 14H and 14I described with reference to FIG. 5B are provided at the lower end portions of the second side wall portion 14D and the rib portion 14E, and these protruding portions are provided. In the 35 and the flange portions 14H and 14I, the upper extending portion 21 of the end member 12 is connected to the second side wall portion 14D and the rib portion 14E of the main body half member 14 by the welded portion 37, so that the protruding portion 35 and the flange A large welding area is secured by the portions 14H and 14I, and the lower extending portion 22 of the end member 12 and the second side wall portion 14D of the main body half member 14 and the rib portion 14E can be joined with a large strength.

Further, when the end member 12 is inserted and arranged in each of the notches 15 formed at both ends in the longitudinal direction of the main body 11 as described above, the thickness provided in the lower extending portion 22 of the end member 12 is provided. Approximately the entire meat portion 34 projects downward from the lower surface of the flange portion 14G on the lower side of the first side wall portion 14C of the main body half member 14, and the lower surface of the flange portion 14G is the main body shown in FIG. It is also the lower surface 11A of 11. Approximately the entire thick portion 34 protruding downward from the lower surface 11A is connected to the lower surface 11A by a welded portion 38, whereby the welded portion 36 of FIG. 7 and the welded portion 37 of FIG. 8 and FIG. 9 The end member 12 is connected to the main body 11 by the welded portion 38 of the above.

As described above, in the present embodiment, the portion where the lower extending portion 22 of the end member 12 is connected to the lower surface 11A of the main body 11 by the welded portion 38 is the upper extending portion including the protruding portion 23 and the protruding portions 24 and 25. The thick portion 34 has a vertical dimension larger than the thickness dimension of the portion 21, and in this thick portion 34, the lower extending portion 22 of the end member 12 is welded to the lower surface 11A of the main body 11. Therefore, the lower surface 11A of the main body 11 and the lower extending portion 22 of the end member 12 can be joined by a large strength utilizing the dimension of the thick portion 34 having a large vertical dimension.

FIG. 9 also shows a connecting structure between the end member 12 and the end gap cover 13 as described above, and like the main body half member 14 and the end member 12, an extruded product of aluminum or an aluminum alloy or drawing out. As shown in FIG. 1, the end gap cover 13, which is a molded product, has two working scaffolding plates 10 arranged in series in the longitudinal direction of the working scaffolding plates 10. The purpose is to close the gap generated between the end members 12 of the work scaffolding plates 10. A plurality of protrusions 40 for preventing slipping are provided on the upper surface portion 13A of the end gap cover 13 at intervals in the longitudinal direction of the work scaffolding plate 10, and the end member 12 and the end gap cover 13 are provided. When the protrusions 23 and the protrusions 24 and 25 provided on the upper extension portion 21 of the end member 12 are connected to each other, the work scaffolding plate 10 is provided together with the plurality of protrusions 40 of the end gap cover 13. Since they are arranged at intervals in the longitudinal direction of the above, it also serves as a non-slip protrusion like the plurality of protrusions 40.

Next, the connection structure between the end member 12 and the end gap cover 13 will be described. A locking portion 41 extending downward is provided at the end portion of the upper surface portion 13A of the end gap cover 13 on the end member 12 side, and the upper portion of the standing wall portion 20 of the end member 12 is opened upward. The receiving portion 42 is provided, and by inserting the locking portion 41 into the receiving portion 42 from above, the locking portion 41 is locked in a state of being received by the receiving portion 42, whereby the end member The upper part of the 12 and the upper part of the end gap cover 13 are connected. Further, the end gap cover 13 is provided with a rear wall portion 43 that comes into surface contact with the standing wall portion 20 of the end member 12 below the locking portion 41, and a through hole 43A is formed in the rear wall portion 43. By passing the through hole 43A and the through hole 20A formed in the vertical wall portion 20 of the end member 12 also shown in FIG. 6 through the through portion 44A of the coupling tool 44 such as a blind rivet. The lower part of the end member 12 and the lower part of the end gap cover 13 are connected by the connector 44.

The end gap cover 13 is provided with a recessed portion 51 recessed on the upper side of the rear wall portion 43 in the direction opposite to the end member 12 in the longitudinal direction of the work scaffolding plate 10.

According to the connection structure between the end member 12 and the end gap cover 13, the height position of the locking portion 41 of the end gap cover 13 is set higher than that of the receiving portion 42 of the end member 12 by the vertical dimension of the recessed portion 51. Only a simple operation of bringing the rear wall portion 43 of the end gap cover 13 into surface contact with the standing wall portion 20 of the end member 12 and then lowering the end gap cover 13 from above with respect to the end member 12 at a high position. By performing the above, the locking portion 41 can be inserted into and locked into the receiving portion 42, and therefore, the upper portion of the end member 12 and the upper portion of the end gap cover 13 can be easily connected. Further, since the end gap cover 13 is provided with a rear wall portion 43 that is in surface contact with the standing wall portion 20 of the end member 12 at a position shifted downward from the receiving portion 42, these rear walls are provided. By performing the work of penetrating the penetrating portion 44A of the fitting 44 by a blind rivet or the like through the through holes 43A and 20A formed in the portion 43 and the vertical wall portion 20, the lower portion of the end member 12 and the end gap cover 13 are formed. The lower part can also be easily connected.

As shown in FIGS. 7 and 8, the size of the end gap cover 13 in the width direction of the work scaffolding plate 10 is smaller than that of the end member 12, so that the end member 12 is provided with the above-mentioned connecting structure. When the end gap cover 13 is connected on the side opposite to the main body 11 in the longitudinal direction of the work scaffold plate 10, the end gap cover 13 and the main body 11 of the work scaffold plate 10 are connected in the width direction of the work scaffold plate 10. There is a gap between the hook member 17 and the hook member 17 attached to the above-mentioned hook member 17.

FIG. 10 shows a state when a large number of work scaffolding boards 10 are stacked up and down at a construction work site where the temporary scaffolding 1 of FIG. 1 is constructed, or on a truck bed or the like. FIG. 11 shows a part of the work scaffolding plate 10 at this time, and in FIG. 11, the main body 11 and the hook member 17 and the like in each work scaffolding plate 10 are shown by a two-dot chain line, and the end member 12 and the like. The end gap cover 13 is shown by a solid line. As shown in FIGS. 10 and 11, when a large number of work scaffolding boards 10 are stacked one above the other, only the lowest working scaffolding board 10A among these working scaffolding boards 10 is turned upside down. To.

When the work scaffolding plate 10 of the second stage from the bottom is placed on the work scaffolding plate 10A of the lowermost stage that is upside down, the lower extending portion 22 of the end member 12 of the work scaffolding plate 10A of the lowermost stage and Since the lower extending portion 22 of the end member 12 of the work scaffolding plate 10 in the second stage from the bottom faces up and down, the work of facing each other is performed on the lower side of the end member 12 of the work scaffolding plates 10A and 10. As shown in FIG. 11, the two protrusions 32, 33 provided on the extension portion 22 at intervals in the longitudinal direction of the work scaffolding plate 10 are engaged with each other. Let it be in a state. As a result, the lowermost working scaffolding plate 10A and the lowermost working scaffolding plate 10 are positioned in the longitudinal direction of the working scaffolding plate 10 by the positioning action of the protrusions 32 and 33.

Further, in the present embodiment, as described with reference to FIG. 9, the distance between the two protrusions 32 and 33 in the longitudinal direction of the work scaffolding plate 10 is dimension L, and this dimension L is the respective protrusions 32. Since it is larger than the longitudinal dimension T of the work scaffolding plates 10 with respect to 33, 33, as shown in FIG. 11, the two protrusions 32, 33 of the two work scaffolding plates 10A, 10 It is possible to easily perform the work of causing the scaffolding plates 10 to be engaged with each other so as to be displaced in the longitudinal direction.

As shown in FIG. 11, when the work scaffolding plate 10 of the third stage from the bottom is stacked on the work scaffolding plate 10 of the second stage from the bottom, the end member of the work scaffolding plate 10 of the second stage from the bottom is stacked. The upper extending portion 21 of the 12 has a protrusion 23 provided as a first positioning portion on the upper surface of the end member 12, and the lower extending portion of the end member 12 of the work scaffolding plate 10 at the third stage from the bottom. The 22 is fitted into a recess 28 provided as a second positioning portion on the lower surface of the end member 12. As a result, these work scaffolding plates 10 are positioned in the longitudinal direction of the work scaffolding plates 10 by the protrusions 23 and the recesses 28. When stacking the work scaffolding board 10 of the fourth step from the bottom on the work scaffolding board 10 of the third step from the bottom, and further stacking the work scaffolding board 10 of the fifth and subsequent steps from the bottom, the lower work scaffolding The protrusion 23 provided on the upper extending portion 21 of the end member 12 of the plate 10 is fitted into the recessed portion 28 provided on the lower extending portion 22 of the end member 12 of the upper work scaffolding plate 10. To do. Therefore, each of the work scaffolding plates 10 in the second and subsequent stages from the bottom is positioned in the longitudinal direction of the work scaffolding plate 10 by the positioning action of the protrusion 23 and the recess 28.

Further, as described above, the protrusion 23 of the present embodiment is a curved protrusion that protrudes upward in a curved shape, and the recessed portion 28 is a curved protrusion that is recessed upward in a curved shape. Since it is a recessed portion, the protruding portion 23 can be easily fitted to the recessed portion 28 by the guiding action of the curved shape of the protruding portion 23 and the curved shape of the recessed portion 28. Can be made to.

Since the end member 12 according to the present embodiment is an extruded product or a pultruded product of aluminum or an aluminum alloy as described above, each of the protrusions 32, 33, the protrusion 23, and the recess 28 is an end. Since the work scaffolding plates 10 which are in the length direction of the member 12 are continuously formed in the same shape over the entire length in the width direction, when a large number of work scaffolding plates 10 are stacked one above the other. In addition, even if the work scaffolding plates 10 are slightly displaced in the width direction of the work scaffolding plates 10, these work scaffolding plates 10 can be positioned and stacked in the longitudinal direction of the work scaffolding plates 10. ..

Further, each of the protrusions 32, 33, the protrusion 23, and the recess 28 is continuously formed in the same shape over the entire length of the work scaffolding plate 10 in the width direction, so that the end members are formed. 12 can be an extruded product or a pultruded product of aluminum or an aluminum alloy, whereby the protrusions 32, 33, the protrusion 23, and the recess 28 are formed by the extruded or pultruded aluminum or aluminum alloy. After manufacturing the provided long-sized end member material, the end member material is cut to a predetermined size to form an end member 12 provided with protrusions 32, 33, protrusions 23, and recesses 28. A large number of work scaffolding plates 10 can be easily manufactured, which makes it possible to simplify the manufacturing work of the entire work scaffolding plate 10 and reduce the manufacturing cost.

As shown in FIG. 9, a drain hole 50 is formed in the standing wall portion 20 of the end member 12 according to the present embodiment below the receiving portion 42 described above. The drain hole 50 is formed in the partition space between the first side wall portion 14C and the rib portion 14E of each main body half member 14 shown in FIG. 5B, and the second side wall portion 14D and the rib portion 14E. A plurality of vertical wall portions 20 are provided corresponding to the partition space between them. Further, as described above, the end gap cover 13 is provided with a recessed portion 51 recessed on the upper side of the rear wall portion 43 on the opposite side of the work scaffolding plate 10 in the longitudinal direction with respect to the end member 12. As shown in 9, each drain hole 50 is formed in the vertical wall portion 20 so as to face the recessed portion 51 in whole or in part.

As described with reference to FIGS. 10 and 11, when a large number of work scaffolding plates 10 are stacked one above the other, the bottom working scaffolding plate 10A is turned upside down, so that rainwater or the like is attached to the main body 11 of the work scaffolding plate 10A. Water may collect. However, the end member 12 of the work scaffolding plate 10A at the lowermost stage has a partition space between the first side wall portion 14C and the rib portion 14E of each main body half member 14 and the second side wall portion 14D in the standing wall portion 20. Since a plurality of drain holes 50 are provided corresponding to the partition space between the rib portions 14E, the water collected in these partition spaces in the main body 11 is drained from the drain holes 50 to the end gap cover 13. It can be drained to the side and pulled out to the recessed portion 51 side provided in the end gap cover 13, and as shown in FIGS. 7 and 8, the work on the end gap cover 13 The width dimension of the scaffolding plate 10 is smaller than that of the end member 12, and when the end gap cover 13 is connected to the end member 12 on the side opposite to the main body 11 in the longitudinal direction of the work scaffolding plate 10. Since there is a gap between the end gap cover 13 and the hook member 17 attached to the main body 11 in the width direction of the work scaffolding plate 10, water such as rainwater that has reached the recess 51 is discharged to the end. It can be discharged from both ends of the work scaffolding plate 10 in the partial gap cover 13 in the width direction.

The present invention can be used for a work scaffold board used as a component of the temporary scaffold when constructing a temporary scaffold at a work site such as a construction work site or a civil engineering work site.

10,10A Work scaffolding board 11 Main body 11A Lower surface 12 End member 13 End gap cover 20 Standing wall 21 Upper extension 22 Lower extension 23 The first positioning part, which is a curved protrusion Part 28 The second positioning part, which is a curved dent part 32,33 Projection part 34 Thick part 36,37,38 Welded part 41 Locking part 42 Receiving part 43 Rear wall part 44 Coupling 44A Penetration 50 Drain hole L Spacing of multiple protrusions in the longitudinal direction T Dimensions of protrusions in the longitudinal direction

Claims (9)

It is a work scaffolding plate configured to include a main body whose longitudinal dimension is larger than the width direction dimension orthogonal to the longitudinal direction, and end members arranged on both sides of the main body in the longitudinal direction. hand,
A first positioning portion is provided on the upper surface of each of the end members, and a second positioning portion is provided on the lower surface of each of the end members, and the first positioning portion and the second positioning portion are provided. In the work scaffolding plate, the position in the longitudinal direction is such that a plurality of vertically stacked sheets are positioned in the longitudinal direction by the first positioning portion and the second positioning portion.
The first positioning member has the same shape and is continuously formed over the entire length of the end member in the width direction, and the second positioning portion also has the same shape and has the same shape as the end member. A work scaffolding board characterized in that it is continuously formed over the entire length in the width direction. In the work scaffolding plate according to claim 1, one of the first positioning portion and the second positioning portion has a protruding protrusion, and the other positioning portion has a recessed portion. The work scaffolding plate is characterized in that, by fitting the protruding portion into the recessed portion, the plurality of the vertically stacked sheets are positioned in the longitudinal direction. The work scaffolding plate according to claim 2, wherein the protrusion is a curved protrusion that protrudes in a curved shape, and the recess is a curved recess that is recessed in a curved shape. Work scaffolding board to do. In the work scaffolding plate according to any one of claims 1 to 3, a plurality of protrusions having a downward protrusion amount are provided on the lower surface of each of the end members at intervals in the longitudinal direction. When one of the two pieces is turned upside down and the two pieces are stacked up and down, the plurality of protrusions are in a meshed state in which they are displaced in the longitudinal direction, and the two pieces are in a positioning state in the longitudinal direction. Work scaffolding board. The work scaffolding plate according to claim 4, wherein the distance between the two protrusions is larger than the longitudinal dimension of these protrusions. In the work scaffolding plate according to any one of claims 1 to 5, upper and lower extending portions of the end members are provided with an upper extending portion and a lower extending portion extending toward the main body. The first positioning portion is provided on the upper surface of the upper extending portion, and the second positioning portion is provided on the lower surface of the lower extending portion, and at least a part of the lower extending portion is provided. A thick portion whose upper and lower thickness dimensions are larger than that of the upper extending portion is provided, and at least a part of the thick portion protrudes downward from the lower surface of the main body is welded to the lower surface of the main body. A work scaffolding board characterized by being joined by. In the work scaffolding plate according to any one of claims 1 to 6, end gap covers are connected to each of the end members on the side opposite to the main body in the longitudinal direction, and these end gap covers are connected. Is provided with a locking portion extending downward, and the end member is provided with a receiving portion that is open upward, and the locking portion is inserted into the receiving portion from above. A work scaffolding plate, characterized in that the locking portion is thereby locked to the receiving portion. In the work scaffolding plate according to claim 7, the receiving portion is formed on a standing wall portion provided on the end member, and the end gap cover is provided at a position displaced in the vertical direction from the receiving portion. A rear wall portion that comes into surface contact with the standing wall portion is provided, and the standing wall portion and the rear wall portion are joined by a coupling tool having a penetrating portion that penetrates the standing wall portion and the rear wall portion, thereby causing the end. A work scaffolding plate characterized in that a member and the end gap cover are connected to each other. In the work scaffolding plate according to claim 8, the standing wall portion is provided with a drain hole for draining water accumulated in the main body when the top and bottom are turned upside down to the end gap cover side. A work scaffolding board characterized by being made.

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