Scaffold support receiving member set and scaffold using the same

Abstract

To impart a form suitable for allowing a column member of a structure to support a scaffold board by using an existing bracket, to a receiving member which is used for allowing the column member to indirectly support a scaffold installed on a surface side of the column member.SOLUTION: A receiving member 1 which is indirectly supported by a column member 4, which is assembled by a horizontal member 21 and a diagonal member 22 joined to it, and which is for allowing the column member 4 to support a bracket 2 which has a holding part 23 capable of holding a wedge 3 facing in a vertical direction or a direction close to that in a use state at an end part on the column member 4 side of the horizontal member 21, and has a butting part 24 at an end part on the column member 4 of the diagonal member 22 respectively is formed by: a body part 11 joined to the surface of the column member 4 in an overlapped manner; a part 12 to be inserted which is formed at an upper surface of the body part 11, and in which the wedge 3 held by the holding part 23 of the bracket 2 is inserted; and a receiving part 13 which is formed at least at a lower surface of the body part 11, which comes into a surface contact with a side surface on the column member 4 side of the butting part 24 of the bracket 2, and which is burdened with a horizontal force from the side surface of the butting part 24.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a receiving member used to indirectly support a scaffold installed on the surface side of a column member of a structure on the column member set of , and a scaffold using the same.

Background Art

[0002] As a method of detachably supporting a scaffold installed on the surface side of a column member, for example, the outdoor side of an outer column, on the column member, there is a method of interposing a cylindrical member integrated on the indoor side of the scaffold board between two plates protruding vertically at a distance from the surface of the column member, and dropping a pin passing through the plate and the cylindrical member (see Patent Documents 1 and 2).

[0003] In these methods, by inserting the pin through the two plates and the cylindrical member, the vertical load on the scaffold board and the moment due to the vertical load can be borne by the column member, and one scaffold board is supported at a corner of the column member at one position of the plate on the plane, so that the scaffold board can be rotatably supported around the column member.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, since a steel cylindrical member is integrated with the scaffold board, the mass of one scaffold board is larger than that of the scaffold board alone, and there is a risk of dropping when recovering the scaffold board from the column member.

[0006] Therefore, even if one attempts to support a scaffolding board on a column member using a ready-made bracket as a temporary member for supporting the scaffolding board, in many cases, since the bracket for scaffolding is in a form suitable for a round pipe (steel pipe) for support, it is not possible to simply use a ready-made bracket to support the scaffolding board on the column member.

[0007] Based on the above background, the present invention provides a receiving member suitable for supporting a scaffolding board on a column member using a ready-made bracket without adding a steel material such as the cylindrical members of Patent Documents 1 and 2 to the scaffolding board. set of and a scaffolding using the same are proposed.

Means for Solving the Problems

[0008] The receiving member for scaffolding support according to claim 1 set of is indirectly supported by a column member of a structure, assembled from a horizontal member and a diagonal member joined thereto, and at an end of the horizontal member on the column member side, has a holding portion capable of holding a wedge facing in the vertical direction or a direction close thereto in the use state, and at an end of the diagonal member on the column member side, has a butting portion respectively. A bracket for supporting a scaffolding installed on the surface side of the column member on the column member is supported by the wedge, and is used for supporting the bracket on the column member. a plurality of Receiving member set of and each of the receiving members has a main body portion detachably joined directly or indirectly overlapping on the surface of the column member, a portion to be inserted formed on an upper surface of the main body portion in the use state, into which the wedge held by the holding portion of the bracket is inserted, and at least formed on a lower surface of the main body portion in the use state, in surface contact with a side surface of the butting portion of the bracket facing the column member side, and has a receiving portion for bearing a horizontal force from the side surface of this butting portion. the plurality of receiving members are joined in parallel in the width direction of the column member on any surface of the column member, facing the same direction This is a constituent requirement.

[0009] The "column member" includes a steel column and a reinforced concrete column, and the latter includes a steel-reinforced concrete structure and a precast concrete structure. "Indirectly supported by the column member" means that the bracket is supported by the column member through a receiving member. The "structure" is mainly a building, but is not limited thereto.

[0010] "Assembled from a horizontal member and a diagonal member joined thereto" means that in the use state, a horizontal member is arranged horizontally, a diagonal member is joined below the horizontal member in the use state, and the bracket is assembled in an overall Y shape or the like. The "use state" means the state in which the bracket 2 is supported (fixed) by the receiving member 1. "Assembled from" means that the bracket 2 is composed only of the horizontal member 21 and the diagonal member 22, and also includes the case where some reinforcing member (bundled member) or the like is added between the horizontal member 21 and the diagonal member 22 as shown in FIGS. 4 and 5-(b).

[0011] As shown in FIGS. 1-(b), (c) and 3, a holding portion 23 capable of holding the wedge 3 is formed or protruded at the end of the horizontal member 21 on the column member 4 side in the use state of the bracket 2. "Capable of holding" means that when the wedge 3 is separate from the horizontal member 21 as shown in FIG. 1, or when the wedge 3 is mounted on the horizontal member 21 so as to be movable up and down with respect to the horizontal member 21 as a part of the horizontal member 21 as shown in FIG. 3, it means that the wedge 3 can be held in a shape that can be moved up and down freely from the surrounding by gripping the wedge 3 or the like. When the wedge 3 is integrally formed as a part of the horizontal member 21, it means that the wedge 3 is held in a state of being constrained to the horizontal member 21 from the surrounding. In the example shown in FIG. 3, the wedge 3 may also be integrally formed as a part of the horizontal member 21.

[0012] In the case of the example shown in FIG. 1, the holding portions 23, 23 are formed in parallel in the vertical direction or protruded at the ends of the horizontal member 21. In this case, the holding portions 23, 23 arranged in parallel in the vertical direction are arranged so as to sandwich the inserted portion 12 protruding upward in the use state of the main body portion 11 which is the main body of the receiving member 1 in the vertical direction. The "use state of the main body portion 11" refers to the state in which the receiving member 1 (main body portion 11) is joined to the column member 4. The butting portion 24 is formed or protruded at the end of the diagonal member 22 on the column member 4 side in the use state of the bracket 2 so as to be butted against the receiving member 1.

[0013] In the case of the example shown in FIG. 3, the holding portion 23 is formed in parallel in the vertical direction at the end of the horizontal member 21, or at the upper or lower part of the horizontal member 21. The end of the horizontal member 21 is placed on the inserted portion 12 at the lower holding portion 23 or in a part of the wedge 3 integrated with the horizontal member 21 as shown in FIG. 3.

[0014] In the case of the example shown in FIG. 1, as shown in (b) and (c), openings 23a, 12a into which the wedge 3 is inserted are formed at the positions where the two (two pieces or two sheets) of holding portions 23, 23 and the inserted portion 12 overlap each other. By driving the wedge 3 into the openings 23a, 12a of the overlapping holding portion 23 and the inserted portion 12 in the vertical direction or the like, the bracket 2 is constrained and supported in a detachable state with respect to the receiving member 1. The bracket 2 separates from the receiving member 1 when the wedge 3 is removed.

[0015] In the case of FIG. 1, when the wedge 3 is driven toward the openings 23a, 12a, the side surface inclined with respect to the vertical surface on the opening 23a, 12a side presses the holding portion 23 toward the side where the bracket 2 projects from the column member 4. Therefore, the side surface (inclined surface) of the wedge 3 is formed in the direction in which the column member 4 and the bracket 2 face each other. The "direction close to the vertical direction" in claim 1 does not necessarily mean limited to the vertical direction.

[0016] As shown in Fig. 3, when the wedge 3 is supported so as to be movable up and down with respect to the horizontal member 21, or when it is integrated with the horizontal member 21, the wedge 3 is driven into the opening 12a of the inserted portion 12 and is in close contact with the inner peripheral surface of the opening 12a. In the case of Fig. 3, the wedge 3 is in a state of being inserted in advance into the opening 23a of the holding portion 23. By providing an inclination from the horizontal member 21 side toward the main body portion 11 side from above to below on the inner peripheral surface of the opening 12a on the opposite side of the main body portion 11, as the wedge 3 is driven in, the side surface of the wedge 3 closer to the main body portion 11 can be brought into close contact with the surface of the main body portion 11.

[0017] The scaffolds for supporting the bracket 2 on the column member 4 mainly include a scaffold board 6 that is directly supported by a plurality of receiving members 1, 1 supported in parallel in the horizontal direction on the column member 4 and the brackets 2, 2 supported in parallel, and a cross member 5 that is supported at the outer end portion on the opposite side of the column member 4 of the bracket 2 and sandwiches and restrains the scaffold board 6 in the width direction together with the receiving members 1, 1 fixed to the column member 4. However, the bracket 2 that directly supports the cross member 5 and the receiving member 1 that supports the bracket 2 while being supported on the column member 4 can also be included in the scaffold (Claim 2). "The outside of the bracket 2" refers to the surface side of the column member 4 or the bracket 2 side when viewed from the center in the horizontal cross-section of the column member 4. The "horizontal direction" in which the receiving members 1, 1 are arranged in parallel means the width direction of the column member 4.

[0018] As the wedge 3 is driven into the opening 23a of the holding portion 23 and the opening 12a of the inserted portion 12, or into the opening 12a of the inserted portion 12, for example, vertically downward or upward, the inner peripheral surfaces of the openings 23a, 12a that come into contact with the inclined side surface of the wedge 3 are pushed toward the opposite side of the column member 4. As a result of the reaction force generated on the inner peripheral surfaces of the openings 23a, 12a pressing the wedge 3, the inner peripheral surfaces are brought into close contact with the wedge 3, and the bracket 2 is substantially fixed to the receiving member 1. It is appropriate that the inner peripheral surface on the wedge 3 side of the openings 23a, 12a is provided with an inclination parallel to the inclination of the side surface of the wedge 3 so as to receive pressure from the wedge 3 in a surface manner.

[0019] The "main body part that is detachably joined directly or indirectly overlapping on the surface of the column member" in claim 1 means that regardless of the structural type of the column member 4, there are cases where the main body part 11 is joined directly overlapping on the surface of the column member 4, and cases where it is joined via some intermediate member 14 such as the spacing adjustment members shown in Figs. 1-(a) and (b) between the surface of the column member 4. The joining mainly includes welding and bolt joining.

[0020] In the case of the example shown in Fig. 1, an inserted part 12 sandwiched between the parallel holding parts 23, 23 of the bracket 2 as described above is formed at the upper part of the main body part 11 in the used state. In the case of the example shown in Fig. 3, the inserted part 12 is formed at the position where the horizontal member 21, or the lower holding part 23, or a part of the wedge 3 is placed. "Formed" includes formation as a result of protruding.

[0021] In order for the inner peripheral surface of the opening 12a of the inserted part 12 on the inclined surface side of the wedge 3 to receive the pressure from the wedge 3 in a surface manner, the same inclination as the inner peripheral surface of the opening 23a of the holding part 23 is provided on the inner peripheral surface of the opening 12a. When the wedge 3 is line-symmetric on the vertical surface, the opposing inner peripheral surfaces of the openings 23a and 12a are provided with an inclination. Since the holding part 23 is constrained by the wedge 3 to the inserted part 12, most of the vertical load from the bracket 2 and the tensile force due to the moment of the vertical load are transmitted from the holding part 23 through the inserted part 12 and via the receiving member 1 to the column member 4.

[0022] The "formation of a receiving part at least in the lower part of the main body part" in claim 1 means that as shown in Fig. 1-(a), the receiving part 13 may also be formed other than the lower part of the main body part 11. This "formation" also includes formation as a result of protruding.

[0023] The receiving portion 13 only needs to be formed at the lower part of the main body portion 11 at a position corresponding to the butting portion 24 of the diagonal member 22 as shown in FIG. 2. However, when the receiving portion 13 is formed in a curved surface shape as described later, in order to serve to enhance the rigidity of the entire main body portion 11, it may be continuously formed from the lower part to the upper part as shown in FIG. 1-(a). When the receiving portion 13 is continuously formed from the lower part to the upper part of the main body portion 11, there is an advantage that the stability against bending deformation when the main body portion 11 receives the above-mentioned tensile force and the following compressive force from the bracket 2 increases.

[0024] When the surface of the receiving portion 13 facing the column member 4 side of the butting portion 24 of the bracket 2 comes into surface contact, horizontal forces in opposite directions from the surface of the butting portion 13 act on the receiving portion 13. The receiving portion 13 transmits compressive forces to and from the butting portion 24, so that the compressive force due to the moment of the vertical load from the bracket 2 is transmitted to the column member 4 through the receiving member 1. When the butting portion 24 makes surface contact with the receiving portion 13 and exerts compressive forces on each other, a part of the vertical load from the bracket 2 can be transmitted from the butting portion 24 to the receiving portion 13.

[0025] The butting portion 24 of the ready-made bracket 2 is in surface contact with a round pipe, which is a temporary material with which the surface on the column member 4 side comes into contact, and is often formed into a concave curved surface in order to improve the stability in the contact state. In this regard, the surface of the receiving portion 13 on the bracket 2 side may be formed into a convex curved surface corresponding to the surface shape of the butting portion 24 as shown in FIG. 1, but the surface of the receiving portion 13 does not necessarily have to be so, and can be formed into an arbitrary shape, and in addition to a flat plate shape, it can also be formed into a shape in which irregularities are arranged in the horizontal direction or the vertical direction. If the surface of the receiving portion 13 is a convex curved surface formed when a generatrix facing the vertical direction, for example, as shown in FIG. 1, moves parallel along a curve convex toward the bracket 2 side, stability is ensured against vibrations in a direction orthogonal to the direction in which the column member 4 and the bracket 2 face each other.

[0026] As described above, the receiving member 1 has an insertion portion 12 on the upper surface in the use state, into which the wedge 3 held by the holding portion 23 of the bracket 2 is inserted, and a receiving portion 13 on the lower surface that is in surface contact with the butting portion 24 of the bracket 2. By having these, it becomes possible to support the bracket 2 in a state where the vertical load and moment from the ready-made bracket 2 can be transmitted to the column member 4 while being joined to the surface of the column member 4. As a result, a plurality of brackets 2, 2 that can support the scaffold board 6 can be supported respectively a plurality of By arranging the receiving members 1, 1 in parallel in the horizontal direction (Claim 2), it becomes possible to support the scaffold board 6 on the column member using the ready-made bracket 2 without adding a steel material such as the cylindrical member of Patent Documents 1 and 2 to the scaffold board 6.

[0027] When the scaffold board 6 is supported on the column member 4 using the receiving member 1, as shown in FIG. 4, a plurality of receiving members 1, 1 detachably joined in parallel in the horizontal direction to the surface of the column member 4, a plurality of brackets 2, 2 supported by the insertion portion 12 and the receiving portion 13 of each of the parallel receiving members 1, and a horizontal member 5 detachably and horizontally supported at the outer ends of the plurality of parallel brackets 2, 2. By providing a scaffold board 6 laid between the plurality of parallel receiving members 1, 1 and the horizontal member 5, a scaffold is configured (Claim 2).

[0028] Attached to any surface of the column member 4, a plurality of parallel brackets 2, 2 are paired to support the scaffold board 6 disposed on the installation side of the bracket 2. The plurality of brackets 2, 2 are supported by the receiving members 1, 1 fixed to the respective column member 4 sides. By horizontally supporting the horizontal member 5 on the plurality of parallel brackets 2, 2, the region in the width direction where the scaffold board 6 is to be laid is partitioned together with the surface of the receiving member 1 (main body portion 11). By laying the scaffold board 6 between the surface of the receiving member 1 and the horizontal member 5, the scaffold board 6 is constrained from both sides in the width direction and is stabilized on the brackets 2, 2.

[0029] When the column member 4 has flanges 41, 41 on both sides across the center in the cross-section like an H-shaped steel or a square steel pipe, as shown in Fig. 5-(a), the receiving members 1, 1 and the brackets 2, 2 can be installed in parallel in the width direction of the column member 4 (flange 41) on the surface sides of both flanges 41, 41. In this case, the scaffold board 6 is arranged outside the surfaces located on the opposite sides of the column member 4. The "surfaces located on the opposite sides of the column member 4" means the surfaces of the flanges 41, 41 that face each other across the center in the above-mentioned cross-section.

[0030] In this case, as shown in Fig. 4, a plurality of receiving members 1, 1 arranged in parallel are joined to each of the outer surfaces on both sides of the column member 4, are arranged in pairs with the column member 4 interposed therebetween, and brackets 2 are supported by the plurality of receiving members 1 on each side (Claim 3). A cross member 5 is supported at the outer ends of the plurality of brackets 2, 2 arranged in parallel on each side, vertical members 8 are supported vertically at both axial ends of the cross member 5, an orthogonal cross member 9 is installed between the vertical members 8, 8 arranged in a direction orthogonal to the cross member 5, and is supported by both vertical members 8, 8 (Claim 3).

[0031] By installing the cross member 5 outside the brackets 2, 2 arranged in parallel and arranged in pairs with the column member 4 interposed therebetween, and supporting the vertical members 8, 8 vertically at both axial ends of the cross member 5 on each side, a planar frame is formed by the cross member 5 and the vertical member 9 on each side with the column member 4 interposed therebetween. Then, by installing orthogonal cross members 9, 9 between both axial ends of the cross member 5, the planar frames on each side are connected to each other, a three-dimensional frame is configured, and the stability of the planar frame is ensured.

Effect of the Invention

[0032] The receiving member has an insertion portion into which a wedge held by the holding portion of the bracket is inserted on the upper surface in the use state, and has a receiving portion that comes into surface contact with the butting portion of the bracket on at least the lower surface. Therefore, the bracket can be supported in a state where the vertical load and moment from the ready-made bracket can be transmitted to the column member in a state of being joined to the surface of the column member. As a result, by arranging the receiving members horizontally in parallel so that a plurality of brackets capable of supporting the scaffold board can be supported respectively, the scaffold board can be supported on the column member using the ready-made brackets without adding a steel material such as a cylindrical member to the scaffold board.

Brief Description of Drawings

[0033]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0034] Figs. 1-(a) and 3 show a manufacturing example of a receiving member 1 used to support a bracket 2 indirectly supported by a column member 4 of a structure with a wedge 3 and to support the bracket 2 on the column member 4. The bracket 2 is basically assembled from a horizontal member 21 and a diagonal member 22 joined thereto as shown in Figs. 1-(b) and 4.

[0035] In the case of the example shown in Fig. 1, holding portions 23, 23 that are arranged in parallel in the vertical direction and into which the wedges 3 are inserted in the vertical direction and the like are formed at the end of the horizontal member 21 of the bracket 2 on the column member 4 side in the use state, and a butting portion 24 that abuts against the receiving member 1 is formed at the end of the diagonal member 22 on the column member 4 side. The bracket 2 is supported by the receiving member 1 fixed to the column member 4, and serves to support a scaffold board 6 installed on the bracket 2 on the surface side of the column member 4 on the column member 4. An opening 23a for inserting the wedge 3 is formed to penetrate in the vertical direction in each holding portion 23.

[0036] In the case of the example shown in Fig. 3, the holding portion 23 is fixed to at least one of the upper and lower portions of the end of the horizontal member 21 on the column member 4 side, and the wedge 3 is supported so as to be movable up and down or integrally fixed to the holding portion 23. The wedge 3 is mainly inserted into the opening 23a formed near the center on the plane of the holding portion 23 from above.

[0037] The receiving member 1 has a main body portion 11 that is detachably joined directly or indirectly overlapping the surface of the column member 4, an inserted portion 12 that protrudes in a state of protruding toward the bracket 2 side by means such as projection on the upper surface in the use state (joined state to the column member 4) of the main body portion 11, and a receiving portion 13 that is formed by means such as projection on at least the lower surface in the use state of the main body portion 11. The upper part of the main body portion 11 is at a position corresponding to the end of the horizontal member 21 of the bracket 2 on the column member 4 side, and the lower part is at a position corresponding to the end of the diagonal member 22 on the column member 4 side.

[0038] In the case of the example shown in FIG. 1, the inserted portion 12 is held between the holding portions 23, 23 that are arranged in parallel above and below the bracket 2 as shown in FIG. 1-(b), and the wedge 3 that penetrates the holding portions 23 is inserted. In order to fix the bracket 2, an opening 12a into which the wedge 3 to be inserted into the holding portion 23 is inserted is formed in the inserted portion 12. The receiving portion 13 is in surface contact with the side surface of the bracket 2 facing the column member 4 side of the butting portion 24, and bears the horizontal force from the side surface of the butting portion 24 as a compressive force. The receiving member 1 is mainly made of steel materials and their end materials, but the material is not limited as long as it has the strength and rigidity capable of bearing the load including the bracket 2 and the scaffolding board 6 supported by it.

[0039] Since the main body portion 11 is joined by overlapping directly on the surface of the column member 4 or indirectly via an intermediate member 14 as shown in FIG. 1, it is mainly formed in a flat plate shape, but the shape (form) of the main body portion 11 is arbitrary. Since the inserted portion 12 is sandwiched from above and below by the parallel holding portions 23, 23 of the bracket 2, it is formed in a flat plate shape that can be inserted between the parallel holding portions 23, 23, but the shape (form) of the inserted portion 12 is also arbitrary. The intermediate member 14 has a role of adjusting the distance between the surface of the column member 4 and the receiving member 1, or a role of facilitating the joining operation when joining the receiving member 1 to the column member 4 on which the receiving member 1 has already been installed.

[0040] In the case of the example shown in FIG. 3, the inserted portion 12 is formed at the position where the end portion of the horizontal member 21 on the column member 4 side is placed. As shown in (a), the lower part of the wedge 3 attached to the horizontal member 21 is inserted into the opening 12a, and as shown in (b), when the upper part of the wedge 3 is struck, the wedge 3 is constrained by the inner peripheral surface of the opening 12a, and the horizontal member 21 is fixed in a state where the lower surface of the horizontal member 21 or the lower holding portion 23 is placed on the inserted portion 12. Here, by providing the same inclination as the inclined surface of the wedge 3 on the inner peripheral surface 12a in contact with the inclined surface of the wedge 3 on the horizontal member 21 side, the wedge 3 approaches the receiving member 1 side as the wedge 3 is inserted into the opening 12a.

[0041] The surface of the butting portion 24 of the existing bracket 2 on the side of the column member 4 is often concave and curved, and since the surface of the receiving portion 13 directly or indirectly contacts the side surface of the butting portion 24 on the side of the column member 4, in FIGS. 1 and 2, the surface of the receiving portion 13 is formed into a convex curved surface on the bracket 2 side that can be in surface contact with the concave curved surface of the butting portion 24, but this is not necessarily required. "The butting portion 24 indirectly contacts the surface of the receiving portion 13" means that some friction material or the like for suppressing slippage is interposed between the receiving portion 13 and the butting portion 24.

[0042] The convex curved surface of the surface of the receiving portion 13 basically forms a surface when the generatrix facing the vertical direction moves parallel along a convex curve on the bracket 2 side, but it is not limited to this. FIG. 1 shows an example in the case where the receiving portion 13 has a continuous length in the intermediate section excluding both axial ends of the main body portion 11, and FIG. 2 shows an example in the case where the receiving portion 13 having a length greater than the height of the butting portion 24 is fixed only at a position corresponding to the butting portion 24 of the bracket 2.

[0043] FIG. 1-(a) shows a manufacturing example of the receiving member 1 in the case where, for example, the column member 4 is a steel column such as an H-shaped steel or a square steel pipe and the surface is flat, and the back surface (the surface on the column member 4 side) of the main body portion 11 is joined with an intermediate member 14 interposed therebetween. In this example, a channel steel is used horizontally for the intermediate member 14, but the form and orientation of the intermediate member 14 are arbitrary. In this case, the intermediate member 14 is pre-joined to the surface of the column member 4 by welding before being carried to the site, and the main body portion 11 of the receiving member 1 is detachably joined to the intermediate member 14 with bolts 15 and nuts 16 at the site. Insertion holes 11a are formed at positions corresponding to the bolts 15 of the main body portion 11.

[0044] FIG. 1-(b) shows the situation when the bracket 2 is fixed to the receiving member 1 shown in (a) using a wedge 3 separate from the horizontal member 21. The bracket 2 is butted against the surface of the main body portion 11 at the ends of the holding portions 23, 23 which are the ends of the horizontal member 21 on the column member 4 side, or against the surface of the receiving portion 13 when the receiving portion 13 continues from the lower part to the upper part of the main body portion 11, and is butted against the surface of the receiving portion 13 on the surface of the butting portion 24 of the diagonal member 22 on the column member 4 side.

[0045] When the horizontal member 21 is a steel pipe as shown in the figure, the holding portions 23, 23 extend from the end of the horizontal member 21 on the side of the column member 4 to the opposite side, and by making a cut on the side surface, as shown in Fig. 1-(c), a part of the upper and lower plate elements (thick portions) of the horizontal member 21 are left, and these plate elements become the holding portions 23, 23. The lower surface of the portion continuous in the circumferential direction of the upper holding portion 23 is placed on and supported by the inserted portion 12. In the upper and lower holding portions 23, 23, for example, rectangular openings 23a corresponding to the cross-sectional shape of the wedge 3 and long in the axial direction of the horizontal member 21 are formed. Figs. 1-(b) and (c) show examples when a cut is made in the horizontal member 21 so that the width is exactly the thickness of the inserted portion 12.

[0046] As shown in Fig. 1-(b), for example, the wedge 3 is driven into the opening 23a from the upper side in the vertical direction downward. Here, an inclination is given to the side surface of the wedge 3 on the main body side of the bracket 2, that is, the side opposite to the column member 4, from the upper side to the lower side toward the column member 4 side. In this case, an inclination along the inclined surface of the wedge 3, particularly an inclination parallel to the inclined surface of the wedge 3, is given to the inner peripheral surface of the opening 23a on the main body side of the bracket 2, that is, the side facing the receiving member 1.

[0047] As the wedge 3 is driven downward, the inner peripheral surface of the opening 23a facing the receiving member 1 receives a compressive force that makes the inner peripheral surface face the main body side of the bracket 2, and the reaction force pushes the wedge 3 toward the receiving member 1 side, so that the bracket 2 including the horizontal member 21 is brought into close contact with and restrained by the receiving member 1 and is detachably fixed. Between the end face of the horizontal member 21 on the receiving member 1 side and the receiving member 1, a vertical load including the self-weight of the cross member 5 and the scaffold board 6 and the loading load described later received by the bracket 2, and a tensile force generated due to the moment caused by the vertical load are transmitted.

[0048] The butting portion 24 of the bracket 2 abuts against the surface of the receiving portion 13 of the receiving member 1 and is in surface contact as shown in Fig. 1-(b). However, since a compressive force is generated on the contact surface between the receiving portion 13 and the butting portion 24 due to the above moment, they are in a state of being in close contact with each other. This compressive force is transmitted between the receiving portion 13 and the butting portion 24.

[0049] Figure 2 shows a manufacturing example of the receiving member 1 in which the receiving portion 13 in the receiving member 1 shown in Figure 1 is arranged only in the portion that can contact the butting portion 24, with the intermediate member 14 absent. Also in this example, the method of fixing the holding portions 23, 23 of the bracket 2 to the inserted portion 12 of the receiving member 1 using the wedge 3 and the butting state of the butting portion 24 with the receiving portion 13 are the same as in the example of Figure 1.

[0050] In the example of Figure 2, since there is no intermediate member 14 in the example of Figure 1, the receiving member 1 is directly joined to the surface of the column member 4 of the steel frame column by bolts 15 or the like. In this example, when the column member 4 is a reinforced concrete column and fixing members such as anchor bolts or anchor bars fixed inside project from the surface of the column member 4, an insertion hole 11b for the fixing member to pass through and be joined is formed in the main body portion 11.

[0051] As shown in Figure 4, a plurality of receiving members 1, 1 are detachably joined in parallel in the width direction of the column member 4, which is a horizontal direction, to the surface of the column member 4, and a plurality of brackets 2, 2 are supported by the inserted portion 12 and the receiving portion 13 of each of the parallel receiving members 1. Even if it is said "a plurality", actually, since there is one bracket 2 for each surface of the column member 4 and two are sufficient, it is sufficient to join two receiving members 1 to each surface of the column member 4. One bracket 2 is supported by one receiving member 1.

[0052] A scaffold board 6 is detachably fixed to the outer ends of the plurality of parallel brackets 2, 2 in the width direction together with the parallel receiving members 1, 1 fixed to the surface of the column member 4, and a cross member 5 that holds and restrains them horizontally is supported. "The outside of the bracket 2" is the side of the bracket 2 when viewed from the column member 4.

[0053] The cross member 5 is detachably joined to the bracket 2 by being gripped by a clamp 7 connected by gripping or the like at the tip of the cross member 5 side of the horizontal member 21. The scaffold board 6 is sandwiched in the width direction between the cross member 5 and the receiving members 1, 1 fixed to the surface of the column member 4, and is held in a state where its movement in the width direction is restrained. The scaffold board 6 is directly supported by the parallel brackets 2, 2 and is supported by the column member 4 via the receiving members 1, 1.

[0054] When a plurality of receiving members 1, 1 arranged in parallel are joined to the outer surfaces located on opposite sides of the column member 4 as shown in FIGS. 5-(a) and 6, brackets 2 are supported by the plurality of receiving members 1 on each side. For example, when the column member 4 is an H-shaped steel or a square steel pipe, and the receiving members 1, 1 are arranged in pairs across the column member 4 and joined to the surfaces of both flanges 41, 41, the brackets 2, 2 are also arranged in parallel in the width direction of the column member 4 and supported by each receiving member 1.

[0055] In this case, horizontal members 5, 5 are supported at the outer ends of the plurality of brackets 2, 2 arranged in parallel on the surface side of each flange 41, vertical members 8 are supported vertically at both axial ends of the horizontal member 5, and an orthogonal cross member 9 is installed between the vertical members 8, 8 arranged in a direction orthogonal to the horizontal member 5 and supported by both vertical members 8, 8. By installing the orthogonal cross member 9 between the vertical members 8, 8 supported by the brackets 2, 2 on opposite sides of the column member 4, the horizontal members 5, 5 are connected to each other, and the integrity between the horizontal members 5, 5 is ensured.

[0056] The vertical member 8 is, for example, a plate having the same shape as the holding portion 23 of the horizontal member 21 formed at the axial end of the horizontal member 5, and a plate having the same shape as the inserted portion 12 of the receiving member 1 protruding from the peripheral surface of the vertical member 8 overlap, and the two plates are penetrated by the wedge 3 to be connected to and supported by the horizontal member 5. The scaffold board 6 is held in the width direction on the surface of the flange 41 of the column member 4 and the horizontal member 5 and supported by the brackets 2, 2. FIG. 5-(c) shows a state in which the bracket 2 shown in (a) and (b) is supported by the vertical member 8 and used as a handrail or the like for an operator to grasp during work.

Explanation of Reference Numerals

[0057] 1... receiving member, 11... main body portion, 11a... insertion hole, 11b... insertion hole, 12... inserted portion, 12a... opening, 13... receiving portion, 14... intermediate member, 15... bolt, 16... nut, 2... bracket, 21... horizontal member, 22... diagonal member, 23... holding portion, 23a... opening, 24... butting portion, 3... wedge, 4... Column member, 41... Flange, 5... Horizontal member, 6... Scaffold board, 7... Clamp, 8... Vertical member, 9... Orthogonal horizontal member.

Claims

1. It is assembled from a horizontal member and a diagonal member joined thereto, which are indirectly supported by a column member of a structure. At the end of the horizontal member on the column member side, there is a holding portion capable of holding a wedge facing in the vertical direction or a direction close thereto in the use state. Each of the ends of the diagonal member on the column member side has a butting portion. A bracket for supporting a scaffold installed on the surface side of the column member on the column member is supported by the wedge, and it is a set of a plurality of receiving members used to support the bracket on the column member. Each of the receiving members has a main body portion detachably joined directly or indirectly overlapping the surface of the column member, a receiving portion formed on the upper surface of the main body portion in the use state and into which the wedge held by the holding portion of the bracket is inserted, and at least formed on the lower surface of the main body portion in the use state. It has a receiving portion that is in surface contact with the side surface of the butting portion of the bracket facing the column member side and bears the horizontal force from the side surface of this butting portion. The set of receiving members for scaffold support is characterized in that the plurality of receiving members are arranged in parallel in the width direction of the column member on any surface of the column member and are joined facing the same direction.

2. It is indirectly supported by a column member of a structure, assembled from a horizontal member and a diagonal member joined thereto. At the end of the horizontal member on the column member side, there is a holding portion capable of holding a wedge facing in the vertical direction or a direction close thereto in the use state. Each of the ends of the diagonal member on the column member side has a butting portion. A bracket for supporting a scaffold installed on the surface side of the column member on the column member is supported by the wedge and is used to support the bracket on the column member. A main body portion detachably joined directly or indirectly overlapping the surface of the column member, a receiving portion formed on the upper surface of the main body portion in the use state and into which the wedge held by the holding portion of the bracket is inserted, and at least formed on the lower surface of the main body portion in the use state. It has a receiving portion that is in surface contact with the side surface of the butting portion of the bracket facing the column member side and bears the horizontal force from the side surface of this butting portion, and a plurality of receiving members detachably joined in parallel in the horizontal direction on the surface of the column member. The scaffold is characterized by comprising: the inserted portions of the parallel receiving members, a plurality of the brackets supported by the receiving portions, a cross member horizontally and removably supported at outer ends of the plurality of parallel brackets, and a staging board laid between the plurality of parallel receiving members and the cross member.

3. The plurality of parallel receiving members are joined to outer surfaces of the column members that face each other, are arranged in pairs with the column members therebetween, the brackets are supported by the plurality of receiving members on each side, the cross member is supported at outer ends of the plurality of parallel brackets on each side, vertical members are supported at both axial ends of the cross member facing in the vertical direction, and an orthogonal cross member is installed between the vertical members arranged in a direction orthogonal to the cross member and is supported by both vertical members. The scaffold according to claim 2, characterized in that.

Images