JP2024013260A - Temporary scaffolding materials - Google Patents

Abstract

[Problem] To integrate a part of the process of erecting a temporary scaffold and reduce the burden on the person erecting the temporary scaffold. [Solution] A member for temporary scaffolding, which includes a bracket part 1 that supports a scaffold board L, a wall abutment jack part 4 that prevents the temporary scaffold from tilting toward a building J, and a bracket part and a wall abutment. The bracket part 1 includes a fixing means for fixing the jack part and a first wedge 2 which is a means for attaching it to the support column K. The wall jack part 4 has a diagonal auxiliary support part 12 and a vertical auxiliary support part 13 that cooperate with the support part 11 to support the scaffold board L by coming into contact with the pillar K. The jack body 41 has a jack body 41 formed on the body, and a wall abutting part 42 that is provided at one end of the jack body 41 and makes surface contact with the building J, and the support part 11 is formed so that the jack body 41 can be inserted therein. The fixing means is a female screw cut in the support part 11 and a male screw cut in the jack body 41. [Selection diagram] Figure 3

Description

Application for application of Article 30, Paragraph 2 of the Patent Act has been filed On May 1, 2020, Eimatsu Construction Co., Ltd. explained to Sanei Kogyo Co., Ltd. about the temporary scaffolding members invented by Takehiro Matsubara and made them public.

Application for application of Article 30, Paragraph 2 of the Patent Act has been filed On June 6, 2020, Eimatsu Construction Co., Ltd. consulted with Oosawa Co., Ltd. about a prototype of a temporary scaffolding member invented by Gakuyo Matsubara, and released it to the public.

Application for application of Article 30, Paragraph 2 of the Patent Act has been filed On June 24, 2020, Eimatsu Construction Co., Ltd. explained to Heiwa Giken Co., Ltd. about the temporary scaffolding members invented by Gakuyo Matsubara and made it public.

The present invention relates to a bracket and a wall jack that improve the safety of temporary scaffolding.

Temporary scaffolding is erected when constructing or repairing a building to provide a safe work space for workers.

A typical temporary scaffold includes a plurality of columns extending substantially vertically, and a plurality of scaffolding boards bridged substantially horizontally between the plurality of columns.

The scaffold board is supported by a support member to prevent it from falling off.
As such a support member, for example, a bracket is known.

The bracket includes a support part that abuts and supports the scaffold board, and an auxiliary support part that supports the scaffold board in cooperation with the support part.

The support part is a steel material formed into a substantially columnar body, and can be attached to the support column using attachment means corresponding to the type of temporary scaffolding.
The auxiliary support part is a steel material formed into a substantially columnar body, and is provided so as to contact the support part diagonally.

By attaching the bracket to the support column, the scaffolding board can be bridged using the support section.

As a known improvement example of a bracket, the scaffold board support bracket described in Patent Document 1 is a bracket used for a framework scaffold, and the scaffold board support member (corresponding to the support part) is a fixed cylindrical part made of a round pipe material. and a movable cylinder part inserted into and out of the fixed cylinder part, and the movable cylinder part is a bracket that can be fixed to the fixed cylinder part with a fastening bolt.

With such a bracket, by adjusting the length of the movable cylinder part extracted from the fixed cylinder part, it is possible to bridge a wide scaffolding board, or to bridge multiple scaffolding boards in parallel. Enables workers to secure sufficient work space.

On the other hand, the temporary scaffold is supported by a tilt prevention member to prevent it from tilting.
As this tilting prevention member, for example, a wall jack is known.

A wall jack has a jack main body that is stretched against a building, a wall support part that is provided at one end of the jack main body and makes surface contact with the building, a holder part that is formed so that the jack main body can be inserted, and a A stopper for adjusting the length of the jack body to be extracted.

The jack body is a steel material formed into a substantially cylindrical shape, and has a male thread cut on its side surface.
The wall contact portion is a steel material formed in a substantially annular plate shape, and is provided so as to contact the end portion of the jack body substantially perpendicularly.
The holder part is a steel material formed into a substantially cylindrical shape, and can be attached to the support column using attachment means corresponding to the type of temporary scaffolding.
The stopper is a short, substantially cylindrical steel member, and has a female thread cut on its inner surface to be screwed into the male thread of the jack body. Further, the stopper is attached with a handle that can be gripped by the user.

In a wall jack, the holder part is attached to a support column, the jack body with a stopper screwed on is inserted into the holder part, the length of the jack body extracted from the support part is adjusted by the stopper, and the wall part is attached to the building. By being tensioned by the scaffolding, it is possible to prevent the temporary scaffolding from tipping against the building.

JP2006-70486A

However, the process of attaching the brackets and wall jacks to the respective supports increases the burden on the person erecting the temporary scaffold.

In view of the above-mentioned current situation, the present invention aims to solve the problem by integrating a part of the temporary scaffold erection process and thereby reducing the burden on the temporary scaffold erecter. .

In order to solve the above problems, the present invention provides a temporary structure that is attached to a building and includes a plurality of pillars extending substantially vertically, and a plurality of scaffolding boards bridged approximately horizontally between the plurality of pillars. A temporary scaffolding member used for scaffolding,
A bracket part for supporting a scaffold board, a wall jack part for preventing the temporary scaffold from tilting toward the building, a fixing means for fixing the bracket part and the wall jack part, and a means for attaching to the support. , comprising:
The bracket part has a support part that abuts and supports the scaffold board, and an auxiliary support part that is provided on the support part and cooperates with the support part to support the scaffold board by coming into contact with the support column,
The wall abutting jack part has a jack body formed into a substantially columnar body, and a wall abutting part that is provided at one end of the jack body and abuts the building surface,
The support part is formed so that the jack main body can be inserted thereinto,
The fixing means is a temporary scaffold member that can fix and release the jack body inserted into the support part from the support part.

With the above configuration, the present invention has the effects of both a bracket and a wall jack, making it possible to use it in place of a wall jack and shorten the erection process.

Preferably, in the present invention, the temporary scaffold is a wedge tie-down type scaffold in which the support column has a wedge receiver,
The attachment means is a temporary scaffolding member that is a wedge that fits into a wedge receiver.

In particular, when a wedge-bound scaffold is installed in a narrow site, a wall jack is preferably used as a member to prevent the scaffold from tipping.
In such a case, the above configuration allows the invention to be used in place of a wall jack, thereby significantly shortening the erection process.

In one embodiment of the present invention, the jack body is formed into a substantially cylindrical shape, and at least a part of the side surface thereof is externally threaded,
The support part has a female thread cut in at least a part thereof to be screwed into the male thread of the jack body,
The fixing means is a temporary scaffolding member, which is a female screw on the support part and a male screw on the jack body.

With the above configuration, the present invention allows the jack body to be suitably stretched against the building by screwing the jack body into the support part and adjusting the length of the jack body from the support part. do.

Furthermore, with the above configuration, the jack main body and the support part of the present invention are in contact with each other over a wide area, so even if the temporary scaffold shakes, the drag force is dispersed, making it less likely to be damaged. There is.

In another embodiment of the present invention, the fixing means is a bolt,
The support part is provided with a through screw hole on its side into which a bolt can be screwed,
The bolt is screwed into the through-screw hole from the outside of the support part, and the front end of the bolt is pressed against and released from the jack body inserted into the support part, thereby fixing and pressing the jack body against the inner surface of the support part. This is a temporary scaffolding member that can be fixed and released.

With the above configuration, the present invention allows the jack main body and the supporting part to be easily fixed and unfixed by inserting the jack main body into the supporting part and screwing the bolt deep into the through screw hole. do.

In still another embodiment of the present invention, the jack main body is formed into a substantially cylindrical shape, and at least a part of the side surface thereof has an external thread,
The fixing means is a stopper formed in a substantially cylindrical shape and having a female thread cut on its inner surface to be screwed into the male thread of the jack body,
The stopper is a temporary scaffold member that can prevent the jack body inserted into the support part from moving relative to the direction in which the jack body is further inserted by coming into contact with the support part.

With the above configuration, the present invention allows the jack body to be inserted into the support part with the stopper screwed to the jack body, and the length of the jack body extracted from the support part to be adjusted by the stopper. To enable a main body to be suitably stretched against a building.

In the above embodiments of the present invention, preferably, the stopper is a temporary scaffolding member to which a handle that can be grasped by a user is attached.

With the above configuration, the present invention allows the stopper to be easily screwed into the jack body and its position to be easily adjusted.

The present invention integrates a part of the process of erecting a temporary scaffold, thereby making it possible to reduce the burden on the person erecting the temporary scaffold.

FIG. 1 is an overall perspective view of a temporary scaffolding member according to an embodiment of the present invention. It is an AA' sectional view of the whole temporary scaffolding member concerning an embodiment of the present invention. It is a side view for explaining the usage method of the member for temporary scaffolding concerning an embodiment of the present invention. FIG. 2 is a top view for explaining how to use the temporary scaffolding member according to the embodiment of the present invention. It is a perspective view of the whole temporary scaffold member based on the example of a change of embodiment of this invention. It is a BB' cross-sectional view of the whole temporary scaffolding member based on the example of a change of embodiment of this invention. It is a perspective view of the whole temporary scaffolding member based on another modification of the embodiment of the present invention. It is a CC' cross-sectional view of the whole temporary scaffolding member based on another modification of the embodiment of the present invention.

Embodiments of the present invention will be described below using FIGS. 1 to 8.
Note that the present invention can be implemented in other embodiments as well.

Reference numeral X indicates a temporary scaffolding member according to an embodiment of the present invention.
Furthermore, the temporary scaffolding member X is used for a wedge tie-down type scaffold, and the code J indicates a building with a wedge tie-down type scaffold attached, and the code K indicates a support of the wedge tie-down type scaffold, and the code K1 indicates a wedge receiver that the support post K has, L indicates a scaffold board of the wedge-fastened scaffold, and L1 indicates a hook that the scaffold board L has.

In order to clarify the positional relationship of each component of the temporary scaffolding member X, the orientation will be defined in the manner in which the present invention is implemented.
In its implementation, the temporary scaffolding member X is placed between the building J and the pillar K, so the side where the pillar K is located is defined as the pillar side, and the side where the building J is located is defined as the building side.

First, each structure of the temporary scaffolding member X will be explained using FIGS. 1 and 2.

Temporary scaffolding member Be prepared.
All of these structures are made of steel.

The bracket part 1 has a structure shown in FIGS. 1 and 2, and includes a support part 11 (the front side is seen in FIG. 1), a diagonal auxiliary support part 12, a vertical auxiliary support part 13, an abutment plate 14, and a fall prevention part. It has a plate 15.

The support part 11 is formed into an elongated, substantially cylindrical shape, and is arranged substantially horizontally, with one end facing the building side and the other end facing the pillar side.
Further, the inner surface of the support portion 11 (indicated by a thin broken line in FIG. 1) is internally threaded by a predetermined length from the end on the building side toward the pillar side. This predetermined length is more preferably long, and may be the entire length of the support portion 11.
Moreover, the support part 11 has a size that allows the hook L1 of the scaffolding board L to be hooked thereon.

The diagonal auxiliary support part 12 is formed into an elongated substantially columnar body, and is arranged to be inclined from the horizontal so that one end thereof faces upward on the building side and the other end faces downward on the pillar side.
Further, the end of the diagonal auxiliary support part 12 on the building side is welded to the building side of the outer surface of the support part 11 from below.
Further, the end of the diagonal auxiliary support part 12 on the pillar side is arranged substantially vertically below the end of the support part 11 on the pillar side.

The vertical auxiliary support portion 13 is formed into an elongated substantially columnar body, and is arranged so that its longitudinal direction extends substantially in the vertical direction.
Further, one end of the vertical auxiliary support part 13 is welded from below to the column side of the outer surface of the support part 11, and the other end of the vertical auxiliary support part 13 is welded to the side surface of the diagonal auxiliary support part 12 from above. .

In the above arrangement, the support portion 11, the diagonal auxiliary support portion 12, and the vertical auxiliary support portion 13 are arranged to form a substantially right triangle.

The contact plate 14 is formed into a plate shape and is arranged substantially vertically so that one plate surface faces the building side and the other plate side faces the support column side.
Moreover, the plate surface of the abutment plate 14 on the building side is welded to the end of the diagonal auxiliary support part 12 on the pillar side.

The fall prevention plate 15 is formed into a plate shape and is arranged substantially vertically so that one plate surface faces the building side and the other plate side faces the support column side.
Further, the lower end of the drop-off prevention plate 15 is welded to the building-side end of the outer surface of the support portion 11 from above.

The first wedge 2 is formed into a vertically long plate shape and is arranged substantially vertically so that one plate surface faces the building and the other plate surface faces the support column.
Further, the upper part of the first wedge 2 is welded to the end of the support section 11 on the column side.
Moreover, the lower part of the first wedge 2 has a size that allows it to fit into the wedge receiver K1 of the support column K.

The second wedge 3 is formed into a vertically long plate shape and is arranged substantially vertically so that one plate surface faces the building and the other plate surface faces the support column.
Moreover, the upper part of the second wedge 3 is welded to the end of the support part 11 on the building side.
Further, a through hole communicating with the inside of the support part 11 is formed in the upper part of the second wedge 3 .
Moreover, the lower part of the second wedge 3 has a size that allows it to fit into the wedge receiver K1 of the support column K.

In the above configuration, the outer shapes of the bracket portion 1, the first wedge 2, and the second wedge 3 have similar dimensions to those of a known bracket.

The wall abutting jack part 4 has a jack body 41 and a wall abutting part 42 as the configuration shown in FIGS. 1 and 2.
Moreover, the wall jack part 4 is configured separately from the bracket part 1.

The jack main body 41 is formed into an elongated, substantially cylindrical shape, and is arranged substantially horizontally, with one end facing toward the building and the other end facing toward the support column.
Further, the jack body 41 has a size that allows it to be inserted into the support portion 11 through the through hole of the second wedge 3.
Further, a male thread is cut on the side surface of the jack main body 41 by a predetermined length from the end on the support side toward the building side. This predetermined length is more preferably long, and may be the entire length of the jack body 41.
Further, the male thread cut in the jack main body 41 is screwed into the female thread cut in the support part 11 when the jack main body 41 is inserted into the support part 11.

The wall support part 42 is formed into a substantially annular plate shape, and is arranged substantially vertically so that one plate surface faces the building side and the other plate surface faces the pillar side. .
Further, the plate surface of the wall abutting portion 42 on the support side is welded to the end of the jack body 41 on the building side.
Further, it is preferable that a pad made of rubber, for example, which is not shown in FIGS. 1 and 2, is attached to the building-side plate surface of the wall abutment part 42.

Second, how to use the temporary scaffolding member X will be explained using FIGS. 3 and 4.
In addition, in FIGS. 3 and 4, components that are not part of the temporary scaffolding member X are indicated by thin broken lines and transparent front surfaces.

First, the user erects a plurality of columns K, including an inner column close to the building J and an outer column far from the building J, in accordance with the method for constructing a wedge-type scaffold for two-sided scaffolding.
At this time, the user erects the columns K of the inner column one by one with respect to the column K of the outer column.
The above construction method complies with the Industrial Safety and Health Regulations. That is, the distance between the inner columns is 1.85 meters or less.

Next, the user screws the jack body 41 of the wall jack part 4 into the support part 11 of the bracket part 1, and connects the entire length of the temporary scaffolding member Make it shorter than the distance between.

Next, the user fits the first wedge 2 into the wedge receiver K1 of the outer column at the position where the inner column is not present from above. The user preferably hits the first wedge 2 with a hammer to deeply fit the first wedge 2 into the wedge receiver K1 of the outer column.

Next, the user attaches a known bracket to the support post K to which the temporary scaffolding member X is not attached.

By the above steps, a known bracket will be attached to a position where an inner pillar is present, and a temporary scaffolding member X or a known bracket will be attached to a position where an inner pillar is not present.
In addition, the user can use the temporary scaffolding member X excluding the wall jack part 4 as a known bracket.

Next, the user hooks the hook L1 of the scaffold board L onto the support part 11 of the bracket part 1 or the support part of a known bracket to bridge the scaffold board L.

Then, the user extracts the jack main body 41 screwed into the support part 11 and brings the wall contact part 42 into contact with the wall surface of the building J.

Thirdly, the effects of the temporary scaffolding member X will be explained.

The bracket part 1 can stably support the scaffold board L using a mechanism similar to that of a known bracket.
That is, in the bracket part 1, the support part 11 is fixed to the column K via the first wedge 2, and the diagonal auxiliary support part 12 and the vertical auxiliary support part 13 are fixed to the column K via the abutment plate 14. By being stretched, these work together to enable the scaffolding board L to be supported substantially horizontally.
At this time, the fall prevention plate 15 makes it possible to prevent the scaffold board L from falling off from the support part 11 of the bracket part 1.

Moreover, since the bracket part 1 is provided with the second wedge 3, it can be used as a known bracket without inserting the wall jack part 4 into the support part 11.

In the wall jack part 4, the jack main body 41 is screwed into the support part 11, and the length of the jack main body 41 extended from the support part 11 is adjusted, so that the jack main body 41 can be suitably stretched against the building J. make it possible.

In addition, if the female thread of the support part 11 and the male thread of the jack main body 41 are cut long, the jack main body 41 and the support part 11 will come into contact with each other over a wider surface, so that the wall-mounted jack part 4 will be more suitable. , it is possible to suitably tension the jack body 41 against the building J.

In addition, since the jack body 41 and the support part 11 of the temporary scaffolding member X are in contact with each other over a wide area, even if the temporary scaffolding shakes, the drag force is dispersed, making it less likely to be damaged. There is.

If a pad is attached to the wall surface of the wall support part 42 on the building side, the frictional force with the wall surface of the building J will further increase. enable prevention.

Temporary scaffolding member By integrating processes, it is possible to reduce the burden on workers.

Finally, an example of a change in the configuration of the temporary scaffolding member X will be described.
Note that the configuration of the temporary scaffolding member X may be modified as appropriate based on not only the following modification example but also design requirements and the like.

The temporary scaffold does not need to be a wedge-type scaffold as long as it can be used with a wall jack.
In this case, the first wedge 2 and the second wedge 3 are changed to attachment means corresponding to the temporary scaffolding.
For example, when the temporary scaffolding is a frame scaffolding or a single-tube scaffolding, clamps capable of clamping the columns are provided at both ends of the support section 11.

The temporary scaffold may be a bracket one-sided scaffold instead of a two-sided scaffold.

The outer shape of the bracket part 1, the first wedge 2, and the second wedge 3 may have similar dimensions to any known bracket.
As an example, the bracket part 1 may not include the vertical auxiliary support part 13.

The means for fixing the bracket part 1 and the wall jack part 4 may be other means than the female screw of the support part 11 and the male screw of the jack body 41.

As an example of a modification of the fixing means, a temporary scaffolding member X whose fixing means is a bolt 5 will be described with reference to FIGS. 5 and 6.

In this modification, the support portion 11 does not have a female thread cut on its inner surface.
Further, a through screw hole 6 into which a bolt 5 is screwed is provided from below on the side surface of the support portion 11 on the building side.

In this modification, the jack main body 41 does not have a male thread cut on its side surface.

In the temporary scaffolding member Insert it into the support part 11 of.

Next, the user screws the bolt 5 into the through-screw hole 6 of the support part 11.

Then, the user presses the side surface of the jack body 41 with the tip end surface of the bolt 5, and presses and fixes the jack body 41 against the inner surface of the support portion 11.

Note that the shape of the jack body 41 may be changed to suit the pressing of the bolt 5.

As an example, the side surface of the jack main body 41 may be formed into a flat surface for a predetermined length from the end on the pillar side toward the building side.
This allows the user to press the side surface of the jack body 41 over a wider area with the tip end surface of the bolt 5.

As another example, a groove into which the bolt 5 can be inserted may be formed on the side surface of the jack body 41 by a predetermined length from the end on the support side toward the building side.
Thereby, the user can press the jack body 41 at a position closer to the inner surface of the support part 11 by pressing the bottom of the groove of the jack body 41 with the tip end surface of the bolt 5.

In addition, as another example, the jack body 41 is formed in a substantially cylindrical shape, and a gap is formed from the end on the support side toward the building side, into which the bolt 5 can be inserted by a predetermined length. You can leave it there.
Thereby, the user can press the jack main body 41 at a position closer to the inner surface of the support part 11 by pressing the inner surface of the jack main body 41 with the tip end surface of the bolt 5.

Another modified example of the fixing means is for temporary scaffolding, in which the fixing means is a stopper 7 that is formed into a substantially cylindrical shape and has a female thread cut on its inner surface to be screwed into the male thread of the jack body. The member X will be explained using FIGS. 7 and 8.

In this modification, the support portion 11 does not have a female thread cut on its inner surface.

It is preferable that a handle 71 formed into an elongated substantially columnar body is welded to the outer surface of the stopper 7.

In the temporary scaffold member X having the above structure, in order to fix the bracket part 1 and the wall jack part 4, the user first screws the stopper 7 into the wall jack part 4 in advance.
Then, the user adjusts the position of the stopper 7, brings the wall abutting part 42 of the wall abutting jack part 4 into contact with the wall surface of the building J, and at the same time inserts the end of the stopper 7 on the support side into the second wedge. 3, the bracket part 1 and the wall jack part 4 can be fixed.

Note that if a handle 71 formed into an elongated substantially columnar body is welded to the outer surface of the stopper 7, the user can easily screw the stopper 7 onto the jack body 41 by grasping the handle 71. and its position can be easily adjusted.

X Temporary scaffolding member 1 Bracket portion 11 Support portion 12 Diagonal auxiliary support portion 13 Vertical auxiliary support portion 14 Contact plate 15 Fall prevention plate 2 First wedge 3 Second wedge 4 Wall resting jack portion 41 Jack body 42 Wall resting portion 5 Bolt 6 Penetrating screw hole 7 Stopper 71 Handle J Building K Support column K1 Wedge receiver L Scaffolding board L1 Hook

Claims (6)

A temporary scaffold member used for a temporary scaffold, which is attached to a building and includes a plurality of columns extending substantially vertically, and a plurality of scaffold boards bridged substantially horizontally between the plurality of columns, ,
a bracket part that supports the scaffold board; a wall jack part that prevents the temporary scaffold from tilting toward the building; a fixing means that fixes the bracket part and the wall jack part; and means for attaching to the post,
The bracket part includes a support part that abuts and supports the scaffold board, and an auxiliary support part that is provided on the support part and cooperates with the support part to support the scaffold board by coming into contact with the pillar. , has
The wall abutting jack part has a jack main body formed into a substantially columnar body, and a wall abutting part provided at one end of the jack main body and abutting the building with a surface,
The support part is formed so that the jack main body can be inserted thereinto,
The fixing means is a temporary scaffolding member capable of fixing and unfixing the jack body inserted into the support part to and from the support part. The temporary scaffold is a wedge-bound scaffolding in which the support has a wedge receiver,
The temporary scaffolding member according to claim 1, wherein the attachment means is a wedge that fits into the wedge receiver. The jack main body is formed into a substantially cylindrical shape, and at least a part of the side surface thereof is externally threaded,
The support portion has at least a portion thereof female threaded to be screwed into the male thread of the jack main body,
The temporary scaffold member according to claim 1 or 2, wherein the fixing means is a female screw of the support portion and a male screw of the jack body. The fixing means is a bolt,
The support part is provided with a through screw hole on its side surface into which the bolt can be screwed,
The bolt is screwed into the through screw hole from the outside of the support part, and the front end surface of the bolt is pressed against and released from the jack body inserted into the support part, so that the jack body is inserted into the support part. The temporary scaffolding member according to claim 1 or 2, which is capable of being pressed and fixed to and released from the pressure and fixation on the inner surface. The jack main body is formed into a substantially cylindrical shape, and at least a part of the side surface thereof is externally threaded,
The fixing means is a stopper formed in a substantially cylindrical shape and having a female thread cut on its inner surface to be screwed into the male thread of the jack body,
The temporary structure according to claim 1 or 2, wherein the stopper is able to prevent the jack body inserted into the support portion from relative movement in a direction in which the jack body is further inserted by coming into contact with the support portion. Scaffolding components. The temporary scaffolding member according to claim 5, wherein the stopper is attached with a handle that can be gripped by a user.