JP6917657B1 - Temporary scaffolding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a common handrail by following a change in the interval of columns even if the interval is changed. SOLUTION: A horizontal member 10 is configured to be expandable and contractible. The upper end of the first brace 20 and the upper end of the second brace 30 are swingably attached to the horizontal member 10 in the vertical direction. The first lower wedge member 42 is attached so as to be swingable in the vertical direction with respect to the lower end portion of the first brace 20. The second lower wedge member 43 is attached so as to be swingable in the vertical direction with respect to the lower end portion of the second brace 30. [Selection diagram] Fig. 2

Description

The present invention also relates to a temporary foot field.

Conventionally, temporary scaffolding has been constructed at construction sites and civil engineering work sites of various buildings according to the work contents. A general temporary scaffolding is, for example, as disclosed in Patent Document 1, a plurality of columns, a cloth material for connecting these columns, a scaffolding board which is hung on the cloth material to form a work floor, or the like. It is configured. In addition, the temporary scaffolding is also provided with handrails to ensure the safety of workers on the work floor.

The handrail of Patent Document 1 includes a horizontal member extending in the horizontal direction and a pair of braces arranged below the horizontal member so as to intersect each other. Locking mechanisms for locking into the wedge holes of the columns are provided at the upper end and the lower end of each brace. The locking mechanism at the lower end includes a wedge material to be inserted into the wedge hole of the column, a bracket to which the wedge material is attached, and a pivot shaft that rotatably supports the bracket around a swing axis extending in the vertical direction. ..

Japanese Unexamined Patent Publication No. 2016-1695777

In Patent Document 1, since the bracket to which the wedge member is attached is rotatably supported by a pivot axis extending in the vertical direction, the present invention is applicable at a site where a building having a curved outer wall surface such as a cylindrical tank is constructed. It will be possible to install handrails along the building.

By the way, the distance between the columns is not always constant and may change. When the distance between the columns changes, the length of the horizontal member of the handrail changes, and the horizontal distance of the wedge member provided on the handrail also changes. However, in Patent Document 1, since the length of the horizontal member is fixed, when the interval between the columns changes, it is necessary to change the horizontal member so as to correspond to the interval.

Furthermore, if the distance between the columns changes, the angle of the brace will also change, but since the wedge material is supported at the end of this brace via the bracket, the angle of the wedge material also depends on the angle of the brace. Will change. However, since the insertion angle of the wedge material into the wedge hole is fixed, the angle of the wedge material cannot be changed with respect to the wedge hole. Therefore, when the distance between the columns changes, it is necessary to change the brace to correspond to the distance.

In other words, since it is necessary to prepare a plurality of types of horizontal lumber and braces according to the distance between the columns, there is a risk that the cost will rise.

The present invention has been made in view of this point, and an object of the present invention is to make it possible to use a common handrail by following a change in the distance between columns even if the distance between the columns changes.

In order to achieve the above object, the first invention comprises a first strut and a second strut that extend vertically and are arranged horizontally apart from each other, a jack base that supports each strut, and a plurality of cloths. A material, a plurality of scaffolding plates, and a handrail for temporary scaffolding are provided, and upper locking holes are provided in the upper portions of the first strut and the second strut, respectively, and the upper portion of the first strut and the second strut. In a temporary scaffold in which clamps are attached to portions separated downward from the locking hole, the clamp attached to the first support column holds the first support column from both sides in the radial direction, and a first holding member and a second holding member. A bolt that rotatably connects the holding member, the base end side of the first holding member and the second holding member, and the tip end side of the first holding member and the second holding member. The first holding member and the second holding member are each provided with a pocket and a lower locking hole, and the clamp attached to the second support has the second support. A first sandwiching member and a second sandwiching member sandwiched from both sides in the radial direction, a connecting shaft for rotatably connecting the base end sides of the first sandwiching member and the second sandwiching member, and the first sandwiching member and The first holding member and the second holding member are each provided with bolts and nuts for fastening the tip ends of the second holding member, and pockets serving as lower locking holes are formed in the first holding member and the second holding member, respectively, for the temporary scaffolding. handrail, said horizontal member extending from the first strut to the second strut, said the first brace and the second brace are arranged so as to intersect each other below the horizontal member, the first support side of the horizontal member To the first upper wedge material and the second upper wedge material attached to the end portion of the horizontal member and the end portion of the horizontal member on the second strut side, and the lower end portion of the first brace and the lower end portion of the second brace, respectively. The first lower wedge material and the second lower wedge material attached, the first wedge material side bracket supporting the first lower wedge material, and the second wedge material side bracket supporting the second lower wedge material, respectively. wherein the first upper wedge member and the second lower wedge member is inserted to each of the upper locking hole and the lower locking hole provided in the first strut, the second upper wedge member and the first lower the wedge member is provided on the second support column upper anchor hole and the temporary scaffold handrails in a state in which the plugged into each lower locking hole is attached, et al is to the first strut and the second strut, The horizontal member is configured to be stretchable, and the upper end portion of the first brace is the first support column of the horizontal member. The upper end of the second brace is vertically swingably attached to the end on the side, and the upper end of the second brace is swingably attached to the end of the horizontal member on the second strut side. The first lower wedge member is vertically swingably attached to the lower end of the first brace, and the second lower wedge member is vertically swingable with respect to the lower end of the second brace. The first wedge material side bracket is swingably attached , the first wedge material side bracket is swingably attached in the horizontal direction with respect to the lower end portion of the first brace, and the second wedge material side bracket is the lower end portion of the second brace. It is characterized in that it is mounted so as to be swingable in the horizontal direction.

According to this configuration, the first upper wedge material and the second upper wedge material attached to the horizontal member are inserted into the upper locking hole of the first column and the upper locking hole of the second column, respectively, and the second By inserting the second lower wedge material of the brace and the first lower wedge material of the first brace into the lower locking hole of the first strut and the lower locking hole of the second strut, respectively, the handrail for temporary scaffolding becomes the first strut and the lower locking hole of the second strut. It is attached to the second support. Since the locking hole is a hole into which the wedge material is inserted, it can also be called a wedge hole.

For example, when the distance between the first support and the second support is narrowed, the horizontal member is shortened so that the horizontal member has a length corresponding to the distance between the first support and the second support. As a result, even if the distance between the first strut and the second strut is narrowed, the first upper wedge material and the second upper wedge material of the horizontal lumber are locked to the upper locking hole of the first strut and the upper locking of the second strut, respectively. It becomes possible to insert it into the hole. Further, when the distance between the first strut and the second strut is narrowed, the inclination angle of the first brace and the second brace becomes large, and the intersection angle of both brace changes. Since the first lower wedge material is attached to the lower end of the first brace so as to be swingable in the vertical direction, the angle of the first lower wedge material is constant even if the inclination angle of the first brace becomes large. It is retained and can be inserted into the lower locking hole of the second column. Similarly, since the second lower wedge material is attached to the lower end of the second brace so as to be swingable in the vertical direction, even if the inclination angle of the second brace becomes large, the lower locking hole of the first strut can be used. It becomes possible to insert it.

Further, when the distance between the first support column and the second support column is widened, the horizontal member becomes a length corresponding to the distance between the first support column and the second support column by extending the horizontal member. As a result, even if the distance between the first strut and the second strut is widened, the first upper wedge material and the second upper wedge material of the horizontal lumber are locked to the upper locking hole of the first strut and the upper locking of the second strut, respectively. It becomes possible to insert it into the hole. Further, when the distance between the first strut and the second strut becomes wide, the inclination angle of the first brace and the second brace becomes small, and the crossing angle of both brace changes. Also in this case, since the angles of the first lower wedge member and the second lower wedge member are kept constant, they can be inserted into the lower locking hole of the first column and the lower locking hole of the second column.

Further, the first lower wedge member can be swung horizontally with respect to the lower end portion of the first brace, and the second lower wedge member can be swung horizontally with respect to the lower end portion of the second brace. This allows the handrail to be installed along a building with a curved outer wall surface.

The second invention is characterized in that the first brace and the second brace are configured to be stretchable.

According to this configuration, for example, when the height of the lower locking holes of the first strut and the second strut is increased without changing the height of the horizontal member, the first brace and the second brace can be contracted. , The length of the first brace and the second brace can be set to a length corresponding to the height of the lower locking hole. In addition, if the height of the lower locking holes of the first and second columns is lowered without changing the height of the horizontal member, the first brace and the second brace can be extended to obtain the first brace and the second brace. The length of the second brace can be set to a length corresponding to the height of the lower locking hole .

In the third invention, the lower end portion of the first brace has a first brace side bracket, and the first brace side bracket is swingable in the vertical direction with respect to the lower end portion of the first brace. The first wedge member side bracket is attached to the first wedge member side bracket so as to be swingable in the horizontal direction with respect to the first brace side bracket.

According to this configuration, the first wedge member is attached to the first brace via the first brace side bracket and the first wedge member side bracket so that the first wedge member can swing freely in both the vertical direction and the horizontal direction. Can be done.

According to a fourth invention, the first brace side bracket is made of a metal plate material, and has a pair of connecting plate portions formed so as to sandwich the lower end portion of the first brace in the horizontal direction. It is a feature.

According to this configuration, the first brace side bracket can be connected to the lower end portion of the first brace by a pair of connecting plate portions.

In the fifth invention, the first brace side bracket is made of the first brace by a bolt that horizontally penetrates the pair of the connecting plate portions and the lower end portion of the first brace and a nut that is screwed into the bolt. It is characterized in that it is connected to the lower end portion.

According to this configuration, the first brace side bracket can be swung in the vertical direction while the first brace side bracket can be easily attached to the lower end portion of the first brace by using the bolt and the nut.

According to the present invention, the horizontal member is elastically configured, the first lower wedge member is vertically swingably attached to the lower end of the first brace, and the second lower wedge member is attached to the second brace. Since it is mounted so as to be swingable in the vertical direction with respect to the lower end portion, even if the distance between the columns changes, a common handrail can be used by following the change in the distance.

It is a perspective view which shows a part of the temporary scaffolding which concerns on embodiment of this invention. It is a front view which shows the use state of the handrail for temporary scaffolding which concerns on Embodiment 1. FIG. It is a front view of the handrail for temporary scaffolding which concerns on Embodiment 1. FIG. It is a perspective view which looked at the lower end part of the 1st brace to which the 1st lower wedge material was attached seen from above. It is a front view of the lower end part of the 1st brace to which the 1st lower wedge material is attached. It is a top view of the lower end part of the 1st brace to which the 1st lower wedge material was attached. It is a figure corresponding to FIG. 2 when the space between columns is narrow. FIG. 2 is a diagram corresponding to FIG. 2 according to the second embodiment. FIG. 3 is a view corresponding to FIG. 3 according to the second embodiment. FIG. 7 is a view corresponding to FIG. 7 according to the second embodiment. It is a top view of a pocket clamp. It is a top view of the pocket clamp in an open state. It is a perspective view of a pocket clamp.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its application or its use.

(Embodiment 1)
FIG. 1 is a perspective view showing a part of a temporary scaffold 100 to which the handrail 1 for a temporary scaffold according to the first embodiment of the present invention is attached. The temporary scaffolding 100 includes a plurality of columns 101A, 101B, 101C, ... Extending in the vertical direction, a jack base 102 that supports the respective columns 101A, 101B, 101C, ... And the handrail 1 for temporary scaffolding according to the first embodiment of the present invention. The temporary scaffold 100 is constructed at a construction site or a civil engineering work site of various buildings according to the work, and is used at a site for constructing a building having a curved outer wall surface such as a cylindrical tank. , It is constructed along the outer wall surface of the building.

FIG. 2 is an enlarged view of a part of the temporary scaffolding 100. In FIG. 2, the first support column 101A, the second support column 101B, the jack base 2, the scaffolding plate 104, and the temporary scaffolding handrail 1 are shown, and other members are omitted, but they are shown in FIG. As described above, a part of the temporary scaffold 100 is formed together with other members.

The first strut 101A and the second strut 101B are composed of, for example, metal pipes having a circular cross section, are arranged horizontally apart from each other and parallel to each other. A plurality of pockets P opened in both the upper and lower directions are provided on the first support column 101A and the second support column 101B so as to project in the radial direction. Each pocket P is formed by bending and molding a metal plate material such as a steel plate, and is welded to the metal pipe. Four pockets P are provided at the same height position, and these four pockets P are arranged at 90 degree intervals (equally spaced) in the circumferential direction of the metal pipe. Further, when four pockets P are set as one set, each set is arranged at intervals in the vertical direction. The pocket P is not limited to the pocket P, and a flange may be used. In the case of a flange, a locking hole (wedge hole) into which a wedge material can be inserted is formed so as to penetrate the flange in the vertical direction.

The hole in the pocket P is a locking hole (wedge hole). As shown in FIG. 2, of the pockets P of the first support column 101A, the temporary scaffolding handrail 1 is attached to the two pockets P separated in the vertical direction. Of the pockets P to which the temporary scaffolding handrail 1 is attached, the hole in the pocket P located on the upper side is referred to as the upper locking hole P1, and the hole in the pocket P located on the lower side is referred to as the lower locking hole P2. Further, of the pockets P of the second support column 101B, the handrail 1 for temporary scaffolding is attached to the two pockets P separated in the vertical direction. Of the pockets P to which the temporary scaffolding handrail 1 is attached, the hole in the pocket P located on the upper side is referred to as the upper locking hole P3, and the hole in the pocket P located on the lower side is referred to as the lower locking hole P4.

The temporary scaffolding handrail 1 is a scaffolding component for ensuring the safety of the operator when the operator performs various operations on the work floor formed by the scaffolding plate 104. The temporary scaffolding handrail 1 of this example is a leading handrail. That is, the temporary scaffolding handrail 1 is attached to the first support column 101A and the second support column 101B before the work floor is formed by the scaffolding plate 104, and when the attachment of the temporary scaffolding handrail 1 is completed, the scaffolding plate 104 is attached. It is attached to the first support column 101A and the second support column 101B. Such a construction method is called a handrail preceding construction method or the like.

The handrail 1 for temporary scaffolding includes a horizontal member 10, a first brace 20, a second brace 30, a first upper wedge member 41, a second upper wedge member 40, a first lower wedge member 42, and a second lower wedge member. It is provided with a material 43. The horizontal member 10 is a member that extends horizontally from the first support column 101A to the second support column 101B, and can be made of, for example, a metal pipe material. The horizontal member 10 is configured to be stretchable. Specifically, the horizontal member 10 connects the first horizontal member 10a on the first column 101A side, the second horizontal member 10b on the second column 101B side, the first horizontal member 10a, and the second horizontal member 10b. It has an intermediate horizontal member 10c. The first horizontal member 10a and the second horizontal member 10b have a larger diameter than the intermediate horizontal member 10c, so that the intermediate horizontal member 10c can be inserted into the first horizontal member 10a and the second horizontal member 10b. It has become. For example, one end of the intermediate horizontal member 10c is fixed to the first horizontal member 10a, the other end of the intermediate horizontal member 10c can be inserted into the second horizontal member 10b, and the insertion depth thereof is changed. The distance between the 1 horizontal member 10a and the 2nd horizontal member 10b, that is, the length of the horizontal member 10 can be changed substantially steplessly. Bolts and screws for fixing the intermediate horizontal member 10c to the second horizontal member 10b may be provided so that the length of the horizontal member 10 can be held at a predetermined length. The expansion / contraction structure of the horizontal member 10 is not limited to the above-mentioned structure, and other expansion / contraction structures may be used. For example, the horizontal member 10 may be composed of two members.

The end of the first horizontal member 10a on the side of the first support column 101A is bent downward. A first upper wedge member 41 is attached to an end portion of the first horizontal member 10a on the side of the first support column 101A. The first upper wedge member 41 is made of a metal plate material protruding downward, and can be inserted from above into the upper locking hole P1 of the pocket P provided in the first support column 101A.

The end portion of the second horizontal member 10b on the second support column 101B side is also bent downward. A second upper wedge member 40 is attached to an end portion of the second horizontal member 10b on the second support column 101B side. The second upper wedge member 40 is configured in the same manner as the first upper wedge member 41. The second upper wedge member 40 can be inserted from above into the upper locking hole P3 of the pocket P provided in the second support column 101B. The shapes and sizes of the first upper wedge member 41 and the second upper wedge member 42 may be set so as to fit the pocket P, and are not limited to the illustrated shapes.

The first brace 20 and the second brace 30 are members arranged so as to intersect each other below the horizontal member 10, and are made of a metal pipe similar to the horizontal member 10. The first brace 20 and the second brace 30 can also be referred to as brace. The upper end portion of the first brace 20 is swingably attached to the end portion of the horizontal member 10 on the first support column 101A side in the vertical direction. For example, the upper end of the first brace 20 is connected to the end of the first horizontal member 10a on the first column 101A side by a connecting pin 50 extending in the horizontal direction orthogonal to the extending direction of the horizontal member 10. As a result, the first brace 20 can swing so that the lower end moves in the vertical direction with the upper end as the swing center.

The first brace 20 is configured to be stretchable. For example, the first brace 20 is configured by combining a small diameter member 21 and a large diameter member 22. The large-diameter member 22 constitutes the lower side of the first brace 20, and the lower end of the small-diameter member 21 can be inserted into the large-diameter member 22, and the insertion depth thereof can be changed so that the first brace 20 can be inserted. You can change the length of. Similar to the horizontal member 10, bolts and screws for fixing the small diameter member 21 to the large diameter member 22 may be provided so that the length of the first brace 20 can be held in a predetermined length. The expansion / contraction structure of the first brace 20 is not limited to the above-mentioned structure, and other expansion / contraction structures may be used.

As shown in FIGS. 4 to 6, the first lower wedge member 42 is swingably attached to the lower end portion of the first brace 20 in the vertical direction, and can also swing in the horizontal direction in this mounted state. It has become. The temporary scaffolding handrail 1 includes a first wedge member side bracket 60 that supports the first lower wedge member 42. Further, the lower end portion of the large diameter member 22 which is the lower end portion of the first brace 20 has the first brace side bracket 61. The first wedge member side bracket 60 and the first brace side bracket 61 can also be called a connecting member for connecting the first lower wedge member 42 to the lower end portion of the first brace 20.

The first brace side bracket 61 is attached so as to be swingable in the vertical direction with respect to the lower end portion of the large diameter member 22. Specifically, the first brace side bracket 61 is made of a metal plate material, and has a pair of connecting plate portions 61a, 61a formed so as to sandwich the lower end portion of the large diameter member 22 in the horizontal direction. .. The connecting plate portions 61a and 61a extend substantially in parallel in the vertical direction. The temporary scaffolding handrail 1 includes a pair of connecting plate portions 61a and 61a and a horizontal bolt 70 that horizontally penetrates the lower end portion of the large-diameter member 22, and a nut 71 that is screwed into the bolt 70. By screwing the nut 71 into the bolt 70, the first brace side bracket 61 is connected to the lower end portion of the large diameter member 22. The tightening force of the nut 71 can be set so as not to hinder the vertical swing of the first brace side bracket 61, and in this state, the first brace side bracket 61 is set to a desired angle in the vertical direction. After swinging, the first brace side bracket 61 can be fastened and fixed by tightening the nut 71.

The first brace side bracket 61 has an upper plate portion 61b and a lower plate portion 61c that project substantially horizontally. The upper plate portion 61b and the lower plate portion 61c are arranged at predetermined intervals in the vertical direction, and are substantially parallel to each other. The connecting plate portions 61a and 61a, the upper plate portion 61b and the lower plate portion 61c may be integrally molded from one plate material, or may be configured by combining and integrating different members.

The first wedge member side bracket 60 includes a main body plate portion 60a forming a space through which the first lower wedge member 42 can be inserted in the vertical direction, a wedge connecting pin 60b connecting the first lower wedge member 42, and a first brace. It has a tubular portion 60c supported by the side bracket 61. The first lower wedge member 42 is inserted into the space inside the main body plate portion 60a. With the first lower wedge member 42 inserted into the space inside the main body plate portion 60a, the first lower wedge member 42 is movably connected to the main body plate portion 60a by the wedge connecting pin 60b. The first lower wedge member 42 is formed with an elongated hole 42a for allowing the wedge connecting pin 60b to move relatively in the vertical direction. Further, the main body plate portion 60a is formed with a notch portion 60d into which the pocket P is fitted. When the pocket P is fitted into the notch 60d with the first lower wedge member 42 moved upward and then the first lower wedge member 42 is moved downward, the first lower wedge member 42 becomes the lower portion of the pocket P. It is inserted into the locking hole P4 and the lower end of the first brace 20 is connected to the second support column 101B.

The tubular portion 60c extends in the vertical direction and is arranged between the upper plate portion 61b and the lower plate portion 61c of the first brace side bracket 61. The handrail 1 for temporary scaffolding includes a vertical bolt 72 that vertically penetrates the upper plate portion 61b, the lower plate portion 61c, and the tubular portion 60c of the first brace side bracket 61, and a nut 73 that is screwed into the bolt 72. I have. By screwing the nut 73 into the vertical bolt 72, the first wedge member side bracket 60 is connected to the first brace side bracket 61. The tightening force of the nut 73 can be set so as not to hinder the horizontal swing of the first wedge member side bracket 60, and in this state, the first wedge member side bracket 60 is set at a desired angle in the horizontal direction. The first wedge member side bracket 60 can be fastened and fixed by tightening the nut 73 after swinging until it becomes.

As shown in FIG. 2, the upper end portion of the second brace 30 is swingably attached to the end portion of the horizontal member 10 on the second support column 101B side in the vertical direction. For example, the upper end of the second brace 30 is connected to the end of the second horizontal member 10b on the second support column 101B side by a connecting pin 51 extending in the horizontal direction orthogonal to the extending direction of the horizontal member 10. As a result, the second brace 30 can swing so that the lower end moves in the vertical direction with the upper end as the swing center. The second brace 30 is also configured to be expandable and contractible like the first brace 20, and is configured by combining the small diameter member 31 and the large diameter member 32.

The second lower wedge member 43 is swingably attached to the lower end portion of the second brace 30 in the vertical direction, and can also swing in the horizontal direction in this mounted state. The attachment structure of the second lower wedge member 43 to the second brace 30 is the same as the attachment structure of the first lower wedge member 42 to the first brace 20. That is, the temporary scaffolding handrail 1 includes a second wedge member side bracket 63 that supports the second lower wedge member 43. Further, the lower end portion of the large diameter member 32, which is the lower end portion of the second brace 30, has a second brace side bracket 64. The second brace side bracket 64 is attached so as to be swingable in the vertical direction with respect to the lower end portion of the large diameter member 32.

(Installation procedure for handrail 1 for temporary scaffolding)
FIG. 2 shows a case where the distance between the first support column 101A and the second support column 101B is wide, and FIG. 7 shows a case where the distance between the first support column 101A and the second support column 101B is narrow. In the case shown in FIG. 2, the length of the horizontal member 10 is increased so as to correspond to the distance between the first support column 101A and the second support column 101B. Also, the lengths of the first brace 20 and the second brace 30 are increased. After that, the temporary scaffolding handrail 1 is attached to the first support column 101A and the second support column 101B. That is, the first upper wedge member 41 and the second upper wedge member 40 attached to the horizontal member 10 are locked to the upper locking holes P1 of the pocket P of the first column 101A and the upper locking of the pocket P of the second column 101B, respectively. Insert into hole P3.

Further, after adjusting the angle of the second lower wedge member 43 to an angle that allows the second lower wedge member 43 to be inserted into the lower locking hole P2 of the pocket P of the first support column 101A, the second lower wedge member 43 is inserted into the lower locking hole P2. Further, after adjusting the angle of the first lower wedge member 42 to an angle that allows the first lower wedge member 42 to be inserted into the lower locking hole P4 of the pocket P of the second support column 101B, the first lower wedge member 42 is inserted into the lower locking hole P4. As described above, the temporary scaffolding handrail 1 can be attached to the first support column 101A and the second support column 101B, and then the scaffolding plate 104 is attached.

On the other hand, when the distance between the first support column 101A and the second support column 101B is narrow as shown in FIG. 7, the length of the horizontal member 10 corresponds to the distance between the first support column 101A and the second support column 101B. To shorten. Further, the lengths of the first brace 20 and the second brace 30 are also shortened, and the intersection angle of the first brace 20 and the second brace 30 is changed. Specifically, the first brace 20 and the second brace 30 are moved so that the inclination angles of the first brace 20 and the second brace 30 become smaller. After that, the first upper wedge member 41 and the second upper wedge member 40 attached to the horizontal member 10 are locked to the upper locking holes P1 of the pocket P of the first column 101A and the upper locking of the pocket P of the second column 101B, respectively. Insert into hole P3.

Further, after adjusting the angle of the second lower wedge member 43 to an angle that allows the second lower wedge member 43 to be inserted into the lower locking hole P2 of the pocket P of the first support column 101A, the second lower wedge member 43 is inserted into the lower locking hole P2. Further, after adjusting the angle of the first lower wedge member 42 to an angle that allows the first lower wedge member 42 to be inserted into the lower locking hole P4 of the pocket P of the second support column 101B, the first lower wedge member 42 is inserted into the lower locking hole P4. As a result, even when the distance between the first support column 101A and the second support column 101B is narrow, the same temporary scaffolding handrail 1 as when it is wide can be attached to the first support column 101A and the second support column 101B.

(Action and effect of the embodiment)
As described above, according to the first embodiment, the first upper wedge member 41 and the second upper wedge member 40 attached to the horizontal member 10 are placed in the upper locking holes P1 and the second of the first column 101A, respectively. Insert the second lower wedge member 43 of the second brace 30 and the first lower wedge member 42 of the first brace 20 into the upper locking hole P3 of the support column 101B, respectively, and insert the lower locking hole P2 and the first lower locking hole P2 of the first support column 101A, respectively. By inserting into the lower locking hole P4 of the two columns 101B, the temporary scaffolding handrail 1 is attached to the first column 101A and the second column 101B.

When the distance between the first support column 101A and the second support column 101B is narrow, the horizontal member 10 is shrunk so that the first upper wedge member 41 and the second upper wedge member 42 are respectively placed in the upper locking hole P1 of the first support column 101A. And it becomes possible to insert it into the upper locking hole P3 of the second support column 101B. Further, when the distance between the first support column 101A and the second support column 101B becomes narrower, the inclination angles of the first brace 20 and the second brace 30 become larger, and the intersection angles of both brace 20 and 30 change. Since the lower wedge member 42 and the second lower wedge member 43 can swing in the vertical direction, they can be inserted into the lower locking holes P4 and P2, respectively. Therefore, even if the distance between the first support pillar 101A and the second support pillar 101B changes, the common temporary scaffolding handrail 1 can be used by following the change in the distance.

(Embodiment 2)
8 to 10 relate to the second embodiment of the present invention. This second embodiment is different from that of the first embodiment in that the lengths of the first brace 20 and the second brace 30 cannot be changed. Hereinafter, the same parts as those in the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the different parts will be described in detail.

In the second embodiment, the pocket clamp 80 as shown in FIGS. 11 to 13 is fixed to the columns 101A and 101B, and the lower side of the temporary scaffolding handrail 1 is attached to the pocket clamp 80. The pocket clamp 80 includes a first holding member 81 and a second holding member 82 that hold the support column 101A from both sides in the radial direction, a connecting shaft 83, a bolt 84, a bolt support shaft 85, and a nut 86. The base ends of the first holding member 81 and the second holding member 82 are rotatably connected to each other by a connecting shaft 83. The first holding member 81 and the second holding member 82 are relatively rotatable between the open state shown in FIG. 12 and the closed state shown in FIGS. 11 and 13. A bolt 84 rotatably supported by a bolt support shaft 85 parallel to the connecting shaft 83 is provided on the tip end side of the second holding member 82. On the other hand, on the tip end side of the first holding member 81, a locking plate 81a having a notch 81b (shown in FIG. 13) into which the bolt 84 can be inserted in the radial direction is provided.

After the pocket clamp 80 is opened and the support column 101A is arranged between the first holding member 81 and the second holding member 82, the first holding member 81 and the second holding member 82 are relatively placed around the connecting shaft 83. The support column 101A is clamped in the radial direction by the first sandwiching member 81 and the second sandwiching member 82 by rotating the column. Then, by rotating the bolt 84 around the bolt support shaft 85 and inserting it into the notch 81b and then tightening the nut 86, the first clamp member 81 and the second clamp member 82 strengthen the support column 101A in the radial direction. The pocket clamp 80 is fixed to the support column 101A by being sandwiched between the two. The pocket clamp 80 can be fixed to the support column 101B in the same manner.

The pocket clamp 80 is provided with four pocket PAs spaced apart from each other in the circumferential direction. In the examples shown in FIGS. 8 and 10, since the pocket clamp 80 is arranged so as to correspond to the lower side of the temporary scaffolding handrail 1, the lower part is engaged by the pocket PA of the pocket clamp 80 fixed to the first support column 101A. The stop hole P2 is formed, and the lower locking hole P4 is formed by the pocket PA of the pocket clamp 80 fixed to the second support column 101B.

FIG. 8 shows a case where the distance between the first support column 101A and the second support column 101B is wide, and FIG. 10 shows a case where the distance between the first support column 101A and the second support column 101B is narrow. In the case shown in FIG. 8, the length of the horizontal member 10 is increased so as to correspond to the distance between the first support column 101A and the second support column 101B. Further, since the lengths of the first brace 20 and the second brace 30 are fixed, the first strut 101A has a length corresponding to the height of the first lower wedge member 42 attached to the first brace 20. The height of the pocket clamp 80 is changed, and the height of the pocket clamp 80 of the second support column 101B is changed so as to correspond to the height of the second lower wedge member 43 attached to the second brace 30.

After that, the temporary scaffolding handrail 1 is attached to the first support column 101A and the second support column 101B. That is, the first upper wedge member 41 and the second upper wedge member 40 attached to the horizontal member 10 are locked to the upper locking holes P1 of the pocket P of the first column 101A and the upper locking of the pocket P of the second column 101B, respectively. Insert into hole P3.

Further, after adjusting the angle of the second lower wedge member 43 to an angle that allows the second lower wedge member 43 to be inserted into the lower locking hole P2 of the first column 101A, the second lower wedge member 43 is locked below the pocket clamp 80 of the first column 101A. Insert into hole P2. Further, after adjusting the angle of the first lower wedge member 42 to an angle that can be inserted into the lower locking hole P4 of the pocket clamp 80 of the second support column 101B, the first lower wedge member 42 is inserted into the lower locking hole P4. As described above, the temporary scaffolding handrail 1 can be attached to the first support column 101A and the second support column 101B, and then the scaffolding plate 104 is attached.

On the other hand, when the distance between the first support column 101A and the second support column 101B is narrow as shown in FIG. 10, the length of the horizontal member 10 corresponds to the distance between the first support column 101A and the second support column 101B. To shorten. In addition, the intersection angle of the first brace 20 and the second brace 30 is changed. Specifically, the first brace 20 and the second brace 30 are moved so that the inclination angles of the first brace 20 and the second brace 30 become large. After that, the first upper wedge member 41 and the second upper wedge member 40 attached to the horizontal member 10 are locked to the upper locking holes P1 of the pocket P of the first column 101A and the upper locking of the pocket P of the second column 101B, respectively. Insert into hole P3.

Further, after adjusting the angle of the second lower wedge member 43 to an angle that allows the second lower wedge member 43 to be inserted into the lower locking hole P2 of the pocket clamp 80 of the first support column 101A, the second lower wedge member 43 is inserted into the lower locking hole P2. Further, after adjusting the angle of the first lower wedge member 42 to an angle that can be inserted into the lower locking hole P4 of the pocket clamp 80 of the second support column 101B, the first lower wedge member 42 is inserted into the lower locking hole P4. As a result, even when the distance between the first support column 101A and the second support column 101B is narrow, the same temporary scaffolding handrail 1 as when it is wide can be attached to the first support column 101A and the second support column 101B.

The above embodiments are merely exemplary in all respects and should not be construed in a limited way. Furthermore, all modifications and modifications that fall within the equivalent scope of the claims are within the scope of the present invention.

As described above, the handrail for temporary scaffolding according to the present invention can be used, for example, for a temporary scaffolding constructed at a construction site or a civil engineering work site of various buildings.

1 Temporary scaffolding handrail 10 Horizontal material 20 1st brace 30 2nd brace 40 2nd upper wedge material 41 1st upper wedge material 42 1st lower wedge material 43 2nd lower wedge material 60 1st wedge material side bracket 61 1st Brace side bracket 61a Connecting plate 63 Second wedge side bracket 64 Second brace side bracket 100 Temporary scaffolding 101A 1st support 101B 2nd support

Claims (5)

A first strut and a second strut that extend vertically and are arranged horizontally apart from each other, a jack base that supports each strut, a plurality of cloth materials, a plurality of scaffolding boards, and a handrail for temporary scaffolding. The first strut and the upper part of the second strut are provided with upper locking holes, respectively, and clamps are attached to portions of the first strut and the second strut that are separated downward from the upper locking hole. In the temporary scaffolding
The clamp attached to the first support column includes a first holding member and a second holding member that hold the first support column from both sides in the radial direction, and base end sides of the first holding member and the second holding member. The first sandwiching member and the second sandwiching member are provided with a connecting shaft for rotatably connecting the first sandwiching member and bolts and nuts for fastening the tip ends of the first sandwiching member and the second sandwiching member. Pockets that serve as lower locking holes are formed in each.
The clamp attached to the second support column includes a first holding member and a second holding member that hold the second support column from both sides in the radial direction, and the base end sides of the first holding member and the second holding member. The first sandwiching member and the second sandwiching member are provided with a connecting shaft for rotatably connecting the first sandwiching member and bolts and nuts for fastening the tip ends of the first sandwiching member and the second sandwiching member. Pockets that serve as lower locking holes are formed in each.
The handrail for temporary scaffolding
A horizontal lumber extending from the first strut to the second strut,
The first brace and the second brace arranged so as to intersect each other below the horizontal lumber,
The first upper wedge material and the second upper wedge material attached to the end of the horizontal member on the first strut side and the end of the horizontal member on the second strut side, respectively.
The first lower wedge lumber and the second lower wedge lumber attached to the lower end portion of the first brace and the lower end portion of the second brace, respectively.
The first wedge material side bracket that supports the first lower wedge material, and
A second wedge member side bracket for supporting the second lower wedge member is provided.
The first upper wedge material and the second lower wedge material are inserted into the upper locking hole and the lower locking hole provided in the first support column, respectively, and the second upper wedge material and the first lower wedge material are formed. The temporary scaffolding handrail is attached to the first strut and the second strut while being inserted into the upper locking hole and the lower locking hole provided in the second strut.
The horizontal member includes a first horizontal member on the first strut side, a second horizontal member on the second strut side, and an intermediate horizontal member connecting the first horizontal member and the second horizontal member. The first horizontal member and the second horizontal member have a larger diameter than the intermediate horizontal member, and the intermediate horizontal member can be inserted into the first horizontal member and the second horizontal member. By changing the insertion depth of the intermediate horizontal member into the first horizontal member and the second horizontal member, the horizontal member can be expanded and contracted.
The upper end portion of the first brace is swingably attached to the end portion of the first horizontal member on the first strut side by a connecting pin in the vertical direction.
The upper end portion of the second brace is vertically swingably attached to the end portion of the second horizontal member on the second strut side by a connecting pin.
The first lower wedge member is attached so as to be swingable in the vertical direction with respect to the lower end portion of the first brace.
The second lower wedge member is attached so as to be swingable in the vertical direction with respect to the lower end portion of the second brace.
The first wedge member side bracket is attached so as to swing horizontally with respect to the lower end portion of the first brace.
The temporary scaffolding is characterized in that the second wedge member side bracket is swingably attached to the lower end portion of the second brace in the horizontal direction. In the temporary scaffold according to claim 1,
The first brace and the second brace are temporary scaffolds, which are configured to be stretchable. In the temporary scaffold according to claim 1,
The lower end of the first brace has a bracket on the first brace side.
The first brace side bracket is attached so as to be swingable in the vertical direction with respect to the lower end portion of the first brace.
The first wedge member side bracket is a temporary scaffold that is swingably attached to the first brace side bracket in the horizontal direction. In the temporary scaffold according to claim 3,
The first brace side bracket is a temporary scaffold made of a metal plate material and having a pair of connecting plate portions formed so as to sandwich the lower end portion of the first brace in the horizontal direction. In the temporary scaffold according to claim 4,
The first brace side bracket is connected to the lower end of the first brace by a bolt that horizontally penetrates the pair of connecting plates and the lower end of the first brace and a nut that is screwed into the bolt. Temporary scaffolding characterized by being.

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