JP6749618B2 - Temporary scaffolding material - Google Patents

Description

The present invention relates to a temporary scaffolding member used in a temporary scaffolding assembled at, for example, a construction site, and more particularly to a temporary scaffolding member having a structure of fixing to a support using wedges.

Conventionally, at construction sites where renovation and renovation work (painting, tile application, waterproof repair or crack repair) of condominiums etc. is performed, temporary scaffolding for workers to work at high places is built around the building. Can be assembled. As an example of a mechanism for connecting a horizontal member to a plurality of members constituting a temporary scaffold, for example, a column, a wedge-tightened scaffold that prevents falling by using wedges is known.

As an example of this wedge-tightened scaffolding, Patent Document 1 (Japanese Utility Model Publication No. 1-64539) and the like are known. This temporary scaffolding is provided with mounting flanges provided with a plurality of hook holes on the support column at predetermined intervals, and is fitted to the flange in a state in which a horizontal member is aligned with one of the hook holes of the mounting flange so as to be horizontal. Attach the material. In this state, the pillar and the horizontal member are connected by vertically inserting the wedge into the wedge insertion hole of the horizontal member and the hooking hole of the mounting flange.

In this wedge-locking type scaffold, since the wedge is in a state of being separated from the support or the horizontal member, there is a problem that the wedge is lost and the fixing work is complicated. In order to prevent this problem, for example, as in Patent Document 2 (Japanese Patent Laid-Open No. 11-182027), the wedge insertion holes provided in the horizontal member have different shapes in the vertical direction, and only the lower wedge insertion holes are formed. It is known that a wedge is formed with a protrusion for preventing slipping out so that the horizontal member and the wedge are integrated to eliminate problems such as loss of the wedge. In this wedge-tightened scaffolding, the horizontal member and the wedge are integrated, so the wedge is held in the state of being pulled up and the horizontal member is fitted to the mounting flange, and then the pulled wedge is hooked. And, the work of connecting the support and the horizontal member is carried out by inserting it into the wedge insertion hole of the horizontal member.

Japanese Utility Model Publication No. 1-64539 JP, 11-182027, A JP, 2013-256857, A

However, in the wedge-bonded scaffold described in Patent Document 2, when the support column and the horizontal member are assembled, it is necessary to support the wedge while pulling the wedge upward. In other words, if the wedge is not supported with it pulled out to the upper side, gravity will drop the wedge and the wedge will be vertically inserted into the upper and lower wedge insertion holes, and the wedge will interfere with the horizontal material. It was a hindrance to the work of fitting it into the mounting flange.

For this reason, in Patent Document 3 (JP 2013-256857 A), in order to ensure good workability of attachment and detachment to and from the column, the wedge is held in the stored state with the wedge tilted toward the center of the horizontal member. There is disclosed a temporary scaffolding member provided with a space portion for carrying out.

However, when suspending a horizontal member between two columns, the distance between the columns and the length of the horizontal member are configured to be almost the same. It is necessary to carry out the fitting and removal. In this case, due to the vibration caused by the hammer being driven, the wedges often move and fall into the lower wedge insertion holes, and it is necessary to support the wedges stored in the still tilted state so as not to move. For this reason, the work of attaching the horizontal member is still large, and the workability deteriorates.

Further, the temporary scaffolding members described in Patent Documents 1 to 3 above are configured by welding a connecting member to both ends of a cylindrical pipe member. Here, the connecting member is formed by bending one metal plate so as to face each other in the left-right direction, forming a gap in which the bent portions face each other as a wedge insertion hole, and forming a flange fitting port through which the mounting flange is inserted at the tip end side. It is necessary to form a slit extending in the lateral direction in order to provide the slit. Therefore, there is a problem that the manufacturing process of the connecting member is complicated and the manufacturing cost is increased.

Therefore, a technical problem to be solved by the present invention is to provide a member for temporary scaffolding which can improve workability of assembling and dismounting and which can be easily manufactured.

In order to solve the above technical problems, the present invention provides a temporary scaffolding member having the following configuration.

According to the first aspect of the present invention, a temporary scaffolding member fixed by a wedge member to a column provided with a mounting flange having a plurality of retaining holes,
A pair of wedge notches arranged facing each other in the circumferential direction and having different width dimensions, and a flange notch for fitting the mounting flange, and a cylindrical pipe member provided at each end.
A substantially U-shaped connecting member that is inserted and fixed in the pipe member so as to sandwich the wedge notch, and is configured to close the opening portion of the wedge notch,
The wedge member is provided with a retaining protrusion near both ends, which can pass through only one wedge notch, and is loosely fitted in a state of being inserted into the wedge notch by the connecting member. A member for temporary scaffolding is provided.

According to a second aspect of the present invention, the pipe member has a holding piece for holding the wedge member at least at an end portion of the wedge notch. A temporary scaffolding member according to one aspect is provided.

According to a third aspect of the present invention, there is provided the temporary scaffolding member according to the first or second aspect, wherein the flange notch is provided at only one location on each end of the pipe member. To do.

According to a fourth aspect of the present invention, there is provided the temporary scaffolding member according to any one of the first to third aspects, wherein the connecting member is formed of a wire having a circular cross section.

According to a fifth aspect of the present invention, the connecting member is composed of one wire rod connected to the rear side of the flange notch, the temporary scaffolding member according to the fourth aspect. provide.

According to a sixth aspect of the present invention, the connecting portion is configured such that an opening side portion of the wedge notch protrudes in a direction along an axis of a column. To fifth
A temporary scaffolding member according to any one of the aspects is provided.

According to a seventh aspect of the present invention, the wedge member is configured in a taper shape in which the wide wedge notch side is narrowed, and the point side is bent toward the pipe member center side. The temporary scaffolding member according to any one of the first to sixth aspects is provided.

According to the present invention, by providing the notch in the cylindrical pipe member, the structure for inserting the wedge and the mounting flange can be simplified, and the wedge member inserted in the wedge notch is connected. Since the member can be loosely fitted in the notch, manufacturing can be facilitated. Further, since the wedge member is configured to be able to pass through only one wedge notch, the wedge member can be freely moved with respect to the pipe member, and can be stored in the pipe member when not in use, Further, workability such as pulling out work at the time of mounting can be improved.

It is a perspective view showing a schematic structure of a member for temporary scaffolding of the present invention. It is an expansion perspective view which shows the edge part of the member for temporary scaffolding of FIG. 1, and the structure of a pillar. It is a perspective view which shows the state which the member for temporary scaffolding of FIG. 1 and the support|pillar connected. It is an assembly exploded perspective view which shows the assembly structure of the member for temporary scaffolding of FIG. It is a disassembled front view which shows the assembly structure of the member for temporary scaffolding of FIG. FIG. 2 is a plan view of the temporary scaffolding member of FIG. 1 with the wedge member omitted. FIG. 2 is a bottom view of the temporary scaffolding member of FIG. 1 with the wedge member omitted. FIG. 2 is a side view of the temporary scaffolding member of FIG. 1 with the wedge member omitted. It is a front view of the member for temporary scaffolding of FIG. 1 which shows the state which accommodated the wedge member in the accommodation space. FIG. 2 is a front view of the temporary scaffolding member of FIG. 1 showing a state where the wedge member is engaged with the engaging piece. It is a front view of the member for temporary scaffolding of FIG. 1 which shows the state which pulled out the wedge member. It is sectional drawing in the XII-XII line of FIG. It is a front view of the member for temporary scaffolding of FIG. 1 which shows the state which accommodated the wedge member in the accommodation space and was turned upside down.

Hereinafter, a temporary scaffolding member according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a schematic configuration of a temporary scaffolding member of the present invention. FIG. 2 is an enlarged perspective view showing the configurations of the end portion of the temporary scaffolding member and the column. FIG. 3 is a perspective view showing a state in which the temporary scaffolding member and the support pillar are connected to each other. FIG. 4 is an assembly exploded perspective view showing the assembly configuration of the temporary scaffolding member.

The temporary scaffolding member 1 shown in FIG. 1 is one in which mounting flanges 101 are fixed to columns 100 provided at predetermined intervals, and a connecting fitting 3 and a wedge member 4 are provided at both ends of a pipe member 2. There is.

As shown in FIGS. 2 and 3, the mounting flange 101 provided on the column 100 is a flat plate-shaped member having insertion pieces 102 extending in four directions in a direction perpendicular to the axis of the column 100. A hook hole 103 is provided in each of the two insertion pieces 102. An arcuate shape 104 having a diameter substantially equal to the outer diameter of the support column 100 is formed between the adjacent insertion pieces 102, so that the support columns 100 can be compactly bundled during storage or transportation.

In FIG. 1, the temporary scaffolding member 1 is configured such that the entire length of the temporary scaffolding member 1 is arranged between the columns 100 adjacent to each other. For example, the distance between the long sides is, for example, about 1800 mm, and when the long sides are arranged along the short sides, the distance between the columns 100 is shorter than the long sides. As shown in FIG. 4, the pipe member 2 is composed of a pipe body 2a and a pair of processed pipes 2b welded to both ends thereof, and the pipe body 2a is configured to be expandable and contractible. The length may be adjustable. However, the pipe member may be formed by processing both ends of a single pipe having a desired length.

The pipe member 2 is, for example, a steel pipe having an outer diameter of 46 mm, and two types of cutouts, a cutout 5 for wedge and a cutout 7 for flange, are formed on both ends along the axial direction of the pipe member 2. It is provided in. The wedge notches 5 and 6 are arranged so as to face each other in the circumferential direction of the pipe member 2, and the wedge notch 5 shown in FIG. 4 is configured to be longer and narrower than the lower wedge notch 6. ing. The width dimension A of the upper wedge notch 5 is slightly larger than the width dimension C of the main body portion 4a of the wedge member described later, and the width dimension B of the lower wedge notch 6 is the wedge dimension. It is configured to be larger than the width dimension of the retaining projections 4b and 4c of the member 4.

Further, a holding piece 8 is provided at an end portion of the lower wedge notch 6. The engaging piece 8 is configured by folding back the end portion of the lower wedge notch 6 to the upper side, and is configured to be substantially equal to the width dimension B of the lower wedge notch 6.

The flange notch 7 is provided between the pair of wedge notches 5 and 6, and in the present embodiment, is provided at both ends of the pipe member 2. The flange notch 7 is a member for inserting the insertion piece 102 of the mounting flange 101 provided on the column 100, and the width dimension thereof is determined according to the thickness dimension of the mounting flange 101.

Welding holes 9 are provided on the sides of the wedge notches 5 and 6. The welded hole 9 is a hole for welding the connecting member 3 inserted into the pipe member 2 described later to the pipe member 2.

The connecting fitting 3 is formed by bending a single wire rod, closes the opening portions of the wedge cutouts 5 and 6, and loosely fits the wedge member 4 in a state of being inserted into the wedge cutouts 5 and 6. As the connecting fitting 3, in the present embodiment, as an example, a rope having a circular section with a diameter of φ5 is used.

The connecting fitting 3 is formed in a substantially U shape so as to close the opening of the wedge notch, and includes an insertion foot portion 11 and a closing portion 12. The four insertion leg portions 11 respectively corresponding to the upper and lower wedge notches 5 and 6 are provided at positions inscribed inside the pipe member 2, and are connected by the bent portion 13 on the inner side of the flange notch 7. .. The bent portion 13 reinforces the vicinity of the tongue piece 10 sandwiched between the flange notch 7 and the wedge notches 5 and 6.

The closed portion 12 existing between the insertion foot portions 11 is configured by bending up and down along the axial direction of the support column 100, and is chamfered 14 along the curved surface of the surface of the support column 100. Further, as will be described later, the upper closed portion 12 is provided with a chamfer 14a for preventing the wedge member 4 from being inserted into the mounting flange 101.

As shown in FIG. 4, the horizontal separation distance D between the two insertion foot portions 11 of the connecting fitting 3 is configured to be substantially the same as the width dimension B of the lower wedge notch 6, and the connecting fitting 3 Is inserted into the pipe member 2 and guided and positioned by the engaging piece 8. Further, as shown in FIG. 5, the vertical separation distance E between the two insertion foot portions 11 may be determined according to the thickness dimension of the mounting flange 101. In the present embodiment, the width dimension of the flange cutout 7 is determined. It is constructed slightly narrower than F.

As shown in FIG. 6, FIG. 7, and FIG. 8, the connecting fitting 3 has a bent portion 13 arranged on the side of the flange notch 7 and a pipe so that the engaging piece 8 is arranged between the insertion leg portions 11. Insert into member 2. The insertion foot portion 11 inserted into the pipe member 2 is guided along the tongue pieces 10 on the left and right of the wedge notches 5 and 6, and is inserted until the closed portion 12 comes into contact with the end portion of the pipe member 2. It At this insertion position, as described above, the welding material is supplied to the joint portion from the welding hole 9 and welded, whereby the pipe member 2 is fixed.

As shown in FIG. 2, the wedge member 4 is used for a wedge by inserting the wedges 4 into the wedge notches 5 and 6 of the pipe member 2 so that the connecting fitting 3 closes the openings of the wedge notches 5 and 6. It is loosely fitted in the notches 5 and 6.

The wedge member 4 has a configuration in which the retaining projections 4b are provided on the upper and lower ends of the main body portion 4a, and the portion of the retaining projections 4b is smaller than the width dimension B of the wedge cutout 6 on the lower side. The wedge notch 6 is configured to pass through, but the upper wedge notch 5 has a width dimension that cannot pass through. For this reason, the wedge member 4 is designed not to be pulled out upward through the upper wedge notch 5.

The main body portion 4a has a length dimension of, for example, about 100 mm, and has a taper shape that becomes thinner toward the lower side, and the tip portion 4d is bent toward the center of the pipe member. Since the main body portion 4a has the bent shape, the operability and storability of the wedge member 4 can be improved.

FIG. 9 is a front view of the temporary scaffolding member showing a state where the wedge member is stored in the storage space. As shown in FIG. 9, when the wedge member 4 is stored inside the pipe member 2, the lower end of the wedge member 4 is directed to the inside of the pipe member 2 and the inside of the pipe member 2 is tilted while the wedge member 4 is tilted. Can be inserted into the storage space 15 of At this time, by bending the lower end of the main body portion 4a, the substantial length of the wedge member 4 when viewed in an oblique direction can be shortened, and the wedge member 4 can be stored in a further lying state.

Further, as shown in FIG. 9, since the wedge member 4 does not exist in the flange notch 7, the wedge member 4 can be attached to the column with the wedge member 4 inserted in the storage space 15. Therefore, it is possible to omit the trouble of taking out the wedge member 4 stored when not in use, and it is possible to improve workability.

FIG. 10 is a front view of the temporary scaffolding member showing a state in which the wedge member is engaged with the engaging piece. As shown in FIG. 10, even when the wedge member 4 is leaned against the locking piece 8 to be in a self-standing state, the wedge member 4 is inclined in the upper portion of the pipe member 2 so that the wedge member 4 does not easily fall toward the column 100. You can Therefore, it is easy to maintain the wedge member 4 in a self-supporting state.

As described above, the temporary scaffolding member of the present embodiment can be attached to the column 100 with the wedge member 4 inserted in the storage space 15, but when the wedge member 4 is removed after attachment, The pillar 100 may get in the way. For this reason, it may be desirable to take out the wedge member 4 from the storage space 15 and attach it in advance. At this time, in the temporary scaffolding member according to the present embodiment, the wedge member 4 is erected on the locking piece 8 so as to be in a self-supporting state, and the lower end of the wedge member 4 is cut by the locking piece 8 for cutting the wedge. It is possible to prevent the situation from falling to 6 and becoming another state. Further, since the tip 4d is bent, the wedge member 4 is inclined in the upper portion of the pipe member 2 and is unlikely to fall down to the column 100 side, and the self-standing state can be maintained.

FIG. 11 is a front view of the temporary scaffolding member showing a state where the wedge member is pulled out. FIG. 12 is a sectional view taken along line XII-XII in FIG. As shown in FIG. 11, the temporary scaffolding member of the present embodiment has the main body portion even when the wedge member 4 is pulled out to the upper limit and the lower retaining protrusion 4c is locked in the upper wedge notch 5. Since the lower end of 4a is bent, the wedge member is inclined, so that the posture of the wedge member 4 can be easily maintained.

That is, since the retaining projection 4c is provided on the bent tip portion 4d, a force in a direction to further tilt the wedge member 4 acts on the wedge member 4 in the posture shown in FIG. An upward moment is applied to. Therefore, the slip-out preventing projection 4c is suppressed from sliding toward the end portion side of the pipe member 2, and the posture of the wedge member 4 can be easily maintained.

FIG. 13 is a front view of the temporary scaffolding member showing a state in which the wedge member is housed in the housing space and turned upside down. The temporary scaffolding member 1 may be turned upside down during transportation to the mounting position of the temporary scaffolding member in the housed state of the wedge member 4. However, the temporary scaffolding member according to the present embodiment is provided outside the wedge member 4. It is possible to effectively prevent jumping out to.

That is, as shown in FIG. 13, the closed portion 12 of the connecting fitting 3 prevents the wedge member 4 from sliding toward the end portion of the pipe member 2, so that the wedge member 4 projects to the outside of the pipe member 2. Never. For this reason, the lower end side of the wedge member falls to the inner wall side where the upper wedge notch 5 is provided, and the inclination angle of the wedge member 4 becomes larger, so that the wedge member 4 is attached to the closed portion 12 that projects vertically. The upper ends contact and prevent the wedge member 4 from sliding in the axial direction of the pipe member 2. Therefore, it is possible to prevent the wedge member 4 from popping out to the outside, and it is possible to reduce the labor required for transportation.

According to the temporary scaffolding member 1 of the present embodiment, most of the wedge member 4 is housed in the housing space 15 of the pipe member 2 as described above. At the time of assembling the temporary scaffold, the temporary scaffold member 1 can be attached to the column 100 in this stored state. That is, the worker can insert the mounting flange 101 of the support column 100 into the flange notch 7 with the wedge member 4 housed therein. In this case, since the wedge member 4 is housed in the pipe member 2 housing space 15, for example, an operator can support the temporary scaffolding member 1 with one hand and mount it on the mounting flange 101.

In the assembling work of the temporary scaffolding member 1, it is necessary to drive the temporary scaffolding member 1 with a hammer or the like because the distance between the columns and the length dimension of the temporary scaffolding member 1 are substantially the same. However, since the flange notch 7 is provided on only one side, excessive intrusion is prevented.

Further, in the work of attaching to the pillar 100, even when the temporary scaffolding member 1 is transported in an upright state, the wedge member 4 is prevented from popping out, and the work time is not increased.

Further, as described above, when the work of taking out the wedge member 4 after the attachment to the support column 100 is an obstacle due to the support column, the wedge member is taken out in advance and the wedge member 4 shown in FIG. It is easy to maintain the posture in a stable state even when the user leans against itself and stands up or the wedge member 4 shown in FIG. 11 is pulled up to the upper limit.

Thereafter, the operator grasps and lifts the upper end portion of the wedge member 4, inserts the tip 4d of the wedge member 4 into the hook hole 103 of the mounting flange 101, and cuts the wedge member 4 from the lower wedge notch 6. The tip 4d is projected. Then, the worker hits the upper end portion of the wedge member 4 with a hammer or the like, so that the temporary scaffolding member 1 is firmly fixed to the mounting flange 101 of the column 100, as shown in FIG.

As described above, according to the present embodiment, the temporary scaffolding member 1 can be easily attached to the column 100 in a state where the wedge member 4 is housed in the housing space 15 of the pipe member 2, and the wedge member 4 during transportation. Of the wedge member can be prevented, and the stability of the posture with the wedge member pulled out can be secured. Therefore, when assembling the temporary scaffolding, the workability when the temporary scaffolding member 1 is attached to the column 100 can be improved. Further, even when the temporary scaffolding member is disassembled and the temporary scaffolding member 1 is detached from the support column 100, the same operation as described above can be achieved.

Further, according to the temporary scaffolding member 1 of the present embodiment, since the wedge member 4 and the pipe member 2 can be stored in the storage space 15, the space for storage and transportation can be reduced. That is, for example, as shown in FIG. 9, when a large number of temporary scaffold members 1 are bundled, the gap can be reduced as much as possible. Since the protruding portion can be eliminated, the possibility of damaging the wedge member 4 can be reduced, for example.

Further, since the mounting member is formed by bending the wire rod, it can be easily manufactured.

The present invention is not limited to the above embodiment, and can be implemented in various other modes. For example, the connecting metal fittings 3 may be independently configured in the upper and lower sides, and the flange notches 7 may be configured as a pair at the facing positions.

Further, although the temporary scaffolding member is exemplified by the horizontal member connected between the adjacent columns in the above-described embodiment, the temporary scaffolding member can be widely applied to other members connected to the column having a perforated mounting flange. Yes, it can be widely applied to brackets, handrails, frame members, and the like.

1 Temporary scaffolding member 2 Pipe member 2a Pipe main body 2b Processing pipe 3 Connecting fitting 4 Wedge member 4a Main body 4b, 4c Retaining protrusion 4d Tip 5,6 Wedge notch 7 Flange notch 8 Holding piece 9 Welding hole 10 Tongue Piece 11 Insertion Foot Part 12 Closing Part 13 Bending Part 14, 14a Chamfer 15 Storage Space 100 Strut 101 Mounting Flange 102 Inserting Piece 103 Locking Hole 104 Arc Shape

Claims (3)

A member for temporary scaffolding fixed by a wedge member to a column provided with a mounting flange having a plurality of hook holes,
A pair of wedge notches arranged facing each other in the circumferential direction and having different width dimensions, and a flange notch for fitting the mounting flange, and a cylindrical pipe member provided at each end.
The wedge notch, which is located between the insertion leg portion inserted into and fixed to the pipe member so as to sandwich each of the wedge notches, and the insertion leg portion, and is bent outside the opening of the wedge notch. A connecting member having a substantially U-shaped closing portion for closing the opening portion of
The temporary scaffolding member, wherein the wedge notch located on the lower side has a holding piece for holding the lower end portion of the wedge on the rear end side. The temporary scaffolding member according to claim 1, wherein the engaging piece is configured by folding a rear end portion of the wedge notch into the inside of the pipe member. The temporary scaffolding member according to claim 1 or 2, wherein the flange notch is provided at only one location on each end of the pipe member.

Images