JP2017025537A - Member for temporary scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a member for a temporary scaffold capable of enhancing workability of assembly and removal, and simply manufacturable.SOLUTION: A member 1 for a temporary scaffold comprises a pair of wedge cutouts 5 and 6 fixed by a wedge member 4 to a column 100 provided with a fitting flange 101, oppositely arranged in the circumferential direction and different in a width dimension, a cylindrical pipe member 2 for respectively providing a flange cutout 7 for fitting the fitting flange 101 in an end part and a substantially U-shaped connection member 3 inserted into/fixed to the pipe member 2 so as to sandwich the wedge cutouts 5 and 6 and constituted so as to block up an opening part of the wedge cutouts 5 and 6, and the wedge member 4 is provided with slipping-out preventive projections 4b and 4c capable of passing through only one wedge cutout 6 in the vicinity of both ends, and is loosely fitted in a state of being inserted into the wedge cutouts 5 and 6 by the connection member 3.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a member for a temporary scaffold used in a temporary scaffold assembled at a construction site or the like, for example, and more particularly to a member for a temporary scaffold having a structure that is fixed to a column using a wedge.

  Conventionally, in construction sites where renovations and repair work (painting, tiling, waterproofing repairs, crack repairs, etc.) of condominiums, etc. are carried out, there are temporary scaffolds for workers to work at heights around buildings. Assembled. As an example of a mechanism for connecting a horizontal member to a plurality of members constituting a temporary scaffold, for example, a support, a wedge-tightened scaffold that prevents falling by using a wedge is known.

  As an example of this wedge-binding scaffold, Patent Document 1 (Japanese Utility Model Laid-Open No. 1-64539) and the like are known. This temporary scaffold is provided with mounting flanges provided with a plurality of retaining holes in a support column at a predetermined interval, and a horizontal material is aligned with any of the retaining holes of the mounting flange and fitted to the flanges in a horizontal position. Install the material. In this state, the support is connected to the horizontal member by inserting the wedge vertically into the wedge insertion hole of the horizontal member and the retaining hole of the mounting flange.

  In this wedge-tightened type scaffold, since the wedge is separated from the column 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 Application Laid-Open No. 11-182027), the wedge insertion holes provided in the horizontal member have different shapes on the upper and lower sides, and only the lower wedge insertion hole is provided. It is known that a wedge having a protrusion for preventing it from passing through is used to integrate a horizontal member and wedge to solve the problem of loss of wedge. In this wedge-tightened scaffold, the horizontal material and wedge are integrated, so the wedge is pulled up and held, and the horizontal material is fitted to the mounting flange, and then the raised wedge is hooked into the retaining hole. And the work of connecting the support column and the horizontal member is performed by inserting into the wedge insertion hole of the horizontal member.

Japanese Utility Model Publication No. 1-64539 Japanese Patent Laid-Open No. 11-182027 JP 2013-256857 A

  However, in the wedge-tightened scaffold described in Patent Document 2, it is necessary to support the wedge in a state where the wedge is pulled upward when the support column and the horizontal member are assembled. That is, if the wedge is not pulled out and supported, the wedge will fall due to gravity, and the wedge will be inserted vertically into the upper and lower wedge insertion holes. It was a hindrance to the work of fitting into the mounting flange.

  For this reason, in Patent Document 3 (Japanese Patent Laid-Open No. 2013-256857), in order to ensure good workability of attachment to and removal from the support column, the wedge is held in the stored state as being tilted toward the center side of the horizontal member. A temporary scaffold member provided with a space portion to be disclosed is disclosed.

  However, when a horizontal member is suspended between two struts, the distance between the struts and the length of the horizontal member are almost the same, so the mounting flange is fitted with a hammer or the like. Need to be inserted or removed. In this case, the wedge is moved by the vibration of the hammer and often moves into the lower wedge insertion hole, so that it is necessary to support the wedge stored in the tilted state so that it does not move. For this reason, the trouble of attaching the horizontal member is still large, and there is a problem that workability is deteriorated.

  Furthermore, the members for temporary scaffolds described in Patent Documents 1 to 3 are configured by welding a connecting member to both ends of a cylindrical pipe member. Here, the connecting member bends one metal plate so as to face in the left-right direction, forms a gap facing the bent portion as a wedge insertion hole, and has a flange fitting port through which the mounting flange is inserted at the tip side Therefore, it is necessary to form a slit extending in the lateral direction. For this reason, the manufacturing process of the said connection member was complicated, and there existed a problem that manufacturing cost increased.

  Therefore, a technical problem to be solved by the present invention is to provide a member for a temporary scaffold that can be easily manufactured and can improve assembly and removal workability.

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

According to the first aspect of the present invention, there is provided a temporary scaffold member fixed by a wedge member to a support column provided with a mounting flange having a plurality of retaining holes,
A pair of wedge notches arranged opposite to each other in the circumferential direction and having different width dimensions, and flanged notches into which the mounting flanges are fitted, respectively, cylindrical pipe members provided at the ends,
A substantially U-shaped connecting member inserted and fixed to the pipe member so as to sandwich the wedge notch, and configured to close the opening of the wedge notch,
The wedge member is provided with a retaining protrusion capable of passing only one wedge notch in the vicinity of both ends, and is loosely fitted in a state of being inserted into the wedge notch by the connecting member. A temporary scaffold member is provided.

  According to a second aspect of the present invention, the pipe member has an engaging piece for engaging the wedge member at least at the end of the wide wedge notch. One aspect of a temporary scaffold member is provided.

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

  According to a fourth aspect of the present invention, there is provided the temporary scaffold 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, there is provided the temporary scaffold member according to the fourth aspect, wherein the connecting member is composed of one wire connected on the rear side of the notch for the flange. 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 projects in a direction along the axis of the support column. The member for temporary scaffolds of any one of 5th aspect is provided.

  According to a seventh aspect of the present invention, the wedge member is formed in a tapered shape in which the wedge notch side having a large width is narrowed, and a pointed end side is bent toward the center side of the pipe member. A temporary scaffold member according to any one of the first to sixth aspects is provided.

  According to the present invention, by providing a 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 notch for the wedge is connected. Since the member can be loosely fitted into the notch, the manufacturing can be facilitated. In addition, 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. In addition, workability such as pulling out work at the time of attachment can be improved.

It is a perspective view which shows schematic structure of the member for temporary scaffolds of this invention. It is an expansion perspective view which shows the structure of the edge part of the member for temporary scaffolds of FIG. 1, and a support | pillar. It is a perspective view which shows the state which the member for temporary scaffolds 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 scaffolds of FIG. It is a disassembled front view which shows the assembly structure of the member for temporary scaffolds of FIG. It is a top view of the member for temporary scaffolds of FIG. 1 which abbreviate | omitted the wedge member. It is a bottom view of the member for temporary scaffolds of FIG. 1 which abbreviate | omitted the wedge member. It is a side view of the member for temporary scaffolds of FIG. 1 which abbreviate | omitted the wedge member. It is a front view of the member for temporary scaffolds of FIG. 1 which shows the state which accommodated the wedge member in storage space. It is a front view of the member for temporary scaffolds of FIG. 1 which shows the state which made the wedge member engage with the engagement piece. It is a front view of the member for temporary scaffolds of FIG. 1 which shows the state which pulled out the wedge member. It is sectional drawing in the XII-XII line | wire of FIG. It is a front view of the member for temporary scaffolds of FIG. 1 which shows the state which accommodated the wedge member in the accommodation space and it turned upside down.

  Hereinafter, a temporary scaffold 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 scaffold member of the present invention. FIG. 2 is an enlarged perspective view showing the structure of the end portion of the temporary scaffold member and the column. FIG. 3 is a perspective view showing a state in which the temporary scaffold member and the column are connected. FIG. 4 is an exploded perspective view showing the assembly structure of the temporary scaffold member.

  The temporary scaffolding member 1 shown in FIG. 1 is fixed to a support column 100 having mounting flanges 101 provided at predetermined intervals, and connecting metal fittings 3 and wedge members 4 are provided at both ends of the pipe member 2. Yes.

  As shown in FIGS. 2 and 3, the mounting flange 101 provided on the column 100 is a flat plate member having an insertion piece 102 extending in four directions in a direction perpendicular to the axis of the column 100. A hooking hole 103 is provided in each of the two insertion pieces 102. Between the adjacent insertion pieces 102, an arc shape 104 having a diameter substantially equal to the outer diameter of the support column 100 is configured so that the support columns 100 can be bundled in a compact manner during storage and transportation.

  In FIG. 1, the temporary scaffold member 1 is configured with an interval between adjacent struts 100 that are adjacent to each other in the two directions. For example, the distance between the long sides is, for example, about 1800 mm, and when arranged along the short sides, the long sides are configured to be shorter than the long sides according to the interval between the columns 100. As shown in FIG. 4, the pipe member 2 is composed of a pipe main body 2a and a pair of processed pipes 2b welded to both ends thereof. It may be configured so that the length can be adjusted. However, the pipe member can 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 kinds of notches 5 and 6 and wedge notches 7 extend along the axial direction of the pipe member 2 at both ends. Is provided. The wedge cutouts 5 and 6 are arranged to face the circumferential direction of the pipe member 2, and the wedge cutout 5 shown in FIG. 4 is configured to be long and narrow with respect to the lower wedge cutout 6. ing. The width dimension A of the upper wedge notch 5 is configured to be 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 protrusions 4b and 4c of the member 4.

  An engaging piece 8 is provided at the end of the lower wedge notch 6. The engaging piece 8 is configured by folding the end portion of the lower wedge notch 6 upward, and is configured to be substantially equal to the width dimension B of the lower wedge notch 6.

  The flange cutout 7 is provided between the pair of wedge cutouts 5 and 6. In this embodiment, the flange cutout 7 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 in the support column 100, and the width dimension thereof is determined according to the thickness dimension of the mounting flange 101.

  A welding hole 9 is provided on the side of the wedge cutouts 5 and 6. The welding hole 9 is a processing hole for welding the connecting fitting 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, closes the opening of the wedge cutouts 5, 6, and loosely fits the wedge member 4 in a state of being inserted into the wedge cutouts 5, 6. As the connection fitting 3, in the present embodiment, a steel wire having a circular cross section having a diameter of φ5 is used as an example.

  The connecting fitting 3 is configured in a substantially U shape so as to close the opening of the wedge cutout, and includes an insertion foot portion 11 and a closing portion 12. Four insertion leg portions 11 corresponding to the upper and lower wedge cutouts 5 and 6 are provided at positions inscribed in the inside of the pipe member 2, and are connected by a bent portion 13 on the back side of the flange cutout 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 blocking portion 12 existing between the insertion foot portions 11 is configured to bend 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 14 a for preventing an obstacle to insertion of the wedge member 4 into the mounting flange 101.

  As shown in FIG. 4, the horizontal distance D between the two insertion foot portions 11 of the connection fitting 3 is substantially the same as the width dimension B of the lower wedge notch 6. Is inserted into the pipe member 2 and is 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 this embodiment, the width dimension of the flange notch 7. It is configured slightly narrower than F.

  As shown in FIGS. 6, 7, and 8, the connecting fitting 3 is a pipe in which the bent portion 13 is disposed on the flange notch 7 side and the engaging piece 8 is disposed between the insertion foot portions 11. Insert into member 2. The insertion foot portion 11 inserted into the pipe member 2 is guided along the tongue pieces 10 present on the left and right sides of the wedge cutouts 5 and 6, and is inserted until the closing portion 12 contacts the end of the pipe member 2. The As described above, the welding material is supplied from the welding hole 9 to the joining portion and welded to the pipe member 2 at this insertion position.

  As shown in FIG. 2, the wedge member 4 is used for the wedge when the connection fitting 3 closes the opening of the wedge notches 5, 6 while being inserted into the wedge notches 5, 6 of the pipe member 2. It is loosely fitted in the notches 5 and 6.

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

  The main body portion 4a is configured to have a length of about 100 mm, for example, and has a tapered shape that becomes thinner toward the lower side, and the pointed portion 4d is bent toward the center side of the pipe member. Since the main body portion 4a has a bent shape, the operability and storage property of the wedge member 4 can be improved.

  FIG. 9 is a front view of the temporary scaffold member showing a state in which 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 tilting the wedge member 4 in an oblique direction. Can be inserted into the storage space 15. At this time, since the lower end of the main body portion 4a is bent, the substantial length of the wedge member 4 viewed from an oblique direction can be shortened, and the main body portion 4a can be stored in a more laid 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 support column while being inserted into the storage space 15. Therefore, since the trouble of taking out the wedge member 4 stored when not in use can be omitted, workability can be improved.

  FIG. 10 is a front view of the temporary scaffold member showing a state in which the wedge member is held by the holding piece. As shown in FIG. 10, even when the wedge member 4 stands up against the locking piece 8 and is in a self-supporting state, the wedge member 4 is inclined at the upper portion of the pipe member 2, and it is difficult for the wedge member 4 to fall to the column 100 side. Can do. For this reason, it is easy to maintain the wedge member 4 in a self-supporting state.

  As described above, the temporary scaffold member of the present embodiment can be attached to the support column 100 with the wedge member 4 inserted into the storage space 15, but when the wedge member 4 is taken out after attachment, The support 100 may get in the way. For this reason, it may be desired to take out the wedge member 4 from the storage space 15 and attach it in advance. At this time, in the temporary scaffold member according to the present embodiment, the wedge member 4 stands on the locking piece 8 so as to be self-supporting, and the lower end of the wedge member 4 is notched on the lower wedge notch by the locking piece 8. It can be prevented that it falls to 6 and enters another state. Further, since the tip 4d is bent, the wedge member 4 is inclined at the upper portion of the pipe member 2 and is not easily tilted to the support column 100 side, so that a self-supporting state can be maintained.

  FIG. 11 is a front view of the temporary scaffold member showing a state in which the wedge member is pulled out. 12 is a cross-sectional view taken along line XII-XII in FIG. As shown in FIG. 11, the temporary scaffold member of the present embodiment has a main body portion even when the wedge member 4 is pulled out to the upper limit and the lower retaining projection 4 c is locked to the upper wedge notch 5. Since the lower end of 4a is bent, the wedge member 4 can be maintained in an inclined state by making the wedge member in an inclined state.

  That is, since the retaining protrusion 4c is provided at the bent pointed portion 4d, a force in a direction in which the wedge member 4 is further inclined acts on the wedge member 4 in the posture shown in FIG. An upward moment is applied to. For this reason, it is suppressed that the retaining projection 4c slides toward the end 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 scaffold member showing the wedge member stored in the storage space and turned upside down. While the temporary scaffolding member 1 may be turned upside down during transport to the attachment position of the temporary scaffolding member in which the wedge member 4 is stored, the temporary scaffolding member according to the present embodiment is external to the wedge member 4. Jumping out can be effectively prevented.

  That is, as shown in FIG. 13, the wedge member 4 is prevented from sliding to the end side of the pipe member 2 by the closed portion 12 of the connecting fitting 3, so that the wedge member 4 jumps out of the pipe member 2. There is nothing. For this reason, the lower end side of the wedge member falls to the inner wall side where the upper wedge cutout 5 is provided, and the inclination angle of the wedge member 4 becomes larger. The upper end contacts and prevents the wedge member 4 from sliding in the axial direction of the pipe member 2. For this reason, it is prevented that the wedge member 4 jumps out to the outside, and work labor during transportation can be reduced.

According to the temporary scaffold member 1 of the present embodiment, most of the wedge member 4 is stored in the storage space 15 of the pipe member 2 as described above. When assembling the temporary scaffold, the temporary scaffold member 1 can be attached to the support column 100 in this stored state. That is, the operator can insert the mounting flange 101 of the support column 100 into the flange cutout 7 in a state where the wedge member 4 is stored. In this case, since the wedge member 4 is accommodated in the pipe member 2 accommodating space 15, for example, an operator can support the temporary scaffolding member 1 with one hand and attach it to the attachment flange 101.

  In addition, since the space | interval between support | pillars and the length dimension of the temporary scaffold member 1 are substantially the same, the assembly work of this temporary scaffold member 1 needs to drive in the temporary scaffold member 1 using a hammer etc. However, since the notch for flange 7 is provided only on one side, excessive entry is prevented.

  Further, even when the temporary scaffolding member 1 is transported in an upright state during the attachment work to the support column 100, the wedge member 4 is prevented from jumping out, and the labor is not increased.

  Further, as described above, when the work of taking out the wedge member 4 after being attached to the column 100 is obstructed by the column, the wedge member is taken out in advance, and the wedge member 4 shown in FIG. Even when standing upright or in a state where the wedge member 4 shown in FIG. 11 is pulled up to the upper limit, it is easy to maintain the posture in a stable state.

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

  Thus, according to the present embodiment, the temporary scaffolding member 1 can be easily attached to the support column 100 in a state in which the wedge member 4 is housed in the housing space 15 of the pipe member 2, and the wedge member 4 at the time of transportation. And the stability of the posture in a state where the wedge member is pulled out can be ensured. Therefore, the workability at the time of attaching the temporary scaffolding member 1 to the column 100 can be improved when the temporary scaffolding is assembled. Further, when the temporary scaffolding is dismantled, the same effect as described above can be obtained when the temporary scaffolding member 1 is removed from the support column 100.

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

  Furthermore, since the mounting bracket is configured by bending a wire, it can be easily manufactured.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. For example, the connecting fitting 3 may be configured independently at the top and bottom, and the flange cutouts 7 may be configured as a pair at opposing positions.

  Further, in the above embodiment, the temporary scaffold member is illustrated as a horizontal member connected between adjacent struts, but can be widely applied to other members connected to a strut having a perforated mounting flange. For example, it can be widely applied to brackets, handrail materials, frame materials, and the like.

DESCRIPTION OF SYMBOLS 1 Temporary scaffolding member 2 Pipe member 2a Pipe main body 2b Processed pipe 3 Connecting metal fitting 4 Wedge member 4a Main body 4b, 4c Retaining protrusion 4d Pointed end 5,6 Wedge notch 7 Flange notch 8 Engaging piece 9 Welding hole DESCRIPTION OF SYMBOLS 10 Tongue piece 11 Inserting foot part 12 Blocking part 13 Bending part 14, 14a Chamfer 15 Storage space 100 Support | pillar 101 Mounting flange 102 Inserting piece 103 Stopping hole 104 Arc shape

Claims (7)

A temporary scaffold member fixed by a wedge member to a support column provided with a mounting flange having a plurality of retaining holes,
A pair of wedge notches arranged opposite to each other in the circumferential direction and having different width dimensions, and flanged notches into which the mounting flanges are fitted, respectively, cylindrical pipe members provided at the ends,
A substantially U-shaped connecting member inserted and fixed to the pipe member so as to sandwich the wedge notch, and configured to close the opening of the wedge notch,
The wedge member is provided with a retaining protrusion capable of passing only one wedge notch in the vicinity of both ends, and is loosely fitted in a state of being inserted into the wedge notch by the connecting member. , Temporary scaffolding members.   2. The temporary scaffold member according to claim 1, wherein the pipe member has a retaining piece for retaining the wedge member at least at an end portion of the wedge notch having a wide width.   3. The temporary scaffold member according to claim 1, wherein the notch for the flange is provided only at one location on each end of the pipe member. 4.   4. The temporary scaffold member according to claim 1, wherein the connecting member is formed of a wire having a circular cross section. 5.   5. The temporary scaffold member according to claim 4, wherein the connection member is formed of a single wire connected on a rear side of the notch for the flange.   The said connection part is comprised so that the opening side part of the said notch for wedges may protrude in the direction along the axis | shaft of a support | pillar, The one of Claim 1 to 5 characterized by the above-mentioned. Temporary scaffolding material.   The said wedge member is comprised in the taper shape which the notch side for the said wide wedge becomes thin, and the pointed end side is bent to the said pipe member center side, The any one of Claims 1-6 characterized by the above-mentioned. The temporary scaffold member described in 1.

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