JP6729881B2 - Binding device on scaffolding - Google Patents

Description

The present invention relates to a binding device for binding a connecting member to a column in a scaffold constructed by connecting the columns to each other with a connecting member.

Conventionally, a binding device on a scaffold is composed of a wedge hole of a flange fixedly installed at a predetermined interval in the height direction of a column, and a wedge piece inserted into an insertion hole of a connecting fixture provided at an end of a connecting member. With the tip fixing portion of the connecting and fixing metal fitting faced to the surface of the column, a wedge piece is press-fitted between the tightly connecting edge portion of the wedge hole and the receiving edge portion of the insertion hole so that the tip fixing portion is supported. It is configured to be pressed against the surface of.

In general, the wedge holes of the flange are formed by four wedge holes that are located on the axes intersecting with each other at the center of the column and are arranged at equal intervals in the circumferential direction.

Therefore, when the columns are erected separately from each other toward the X-axis in the beam direction and the Y-axis in the beam direction orthogonal to each other, the wedge hole of the flange is erected so as to face the X-axis and the Y-axis. Thus, the connecting member is arranged on the line connecting the centers of the pair of columns, and the connecting and fixing metal fittings at both ends of the connecting member are tightly connected to the respective wedge holes by the wedge pieces.

JP, 2014-20145, A JP, 2014-5700, A JP, 2010-229700, A

The connecting member is a horizontal member and other beam members for mounting a scaffolding board forming a working floor, a preceding handrail and other beams sequentially installed from the lower layer to the upper layer for safety of scaffolding construction work. The scaffolding structure is made rigid by connecting adjacent columns to each other, which is made of a handrail material or the like.

By the way, for example, in a scaffolding for supporting work, it is necessary to withstand a heavy load, and therefore, there is a demand to increase an allowable load. In order to meet this demand, in addition to the connecting member, a space between columns is required. It is desirable to additionally provide another connecting member for the purpose of reinforcing the diagonal member or the like to shorten the buckling length of the column.

However, in the case of the conventional tightening device, only four wedge holes are provided at equal intervals in the circumferential direction of the flange for tightening the connecting and fixing metal fittings of the connecting member with the wedge pieces. There is no room to tighten additional connecting members.

In this regard, for example, even in the conventional flange having four wedge-fitting holes at equal intervals in the circumferential direction, simply providing the additional wedge holes allows the additional connecting member to be connected. It will be possible.

However, when the connecting and fixing metal fittings of the plurality of types of connecting members are configured to be tightly connected to the plurality of wedge holes, the operator mistakenly attaches the connecting member to another wedge hole different from the desired wedge hole. There is a risk of incorrect work such as connecting.

In particular, when the adjacent support columns are configured to be connectable by a plurality of types of connecting members, it is desirable from the viewpoint of cost that the wedge pieces used for the binding device also serve as the same parts having the same shape. Since the wedge hole is also formed in a hole shape into which the wedge pieces made of the same component can be inserted, it is necessary to provide a specially devised structure in order to prevent the above-mentioned erroneous work.

The present invention provides a binding device for a scaffold that solves the above-mentioned problems, and is configured as a means thereof, and is erected separately in the X direction of the beam direction and the Y direction of the girder direction which are orthogonal to each other. In a scaffold constructed by connecting pillars to each other via a connecting member, wedge holes of flanges fixed at predetermined intervals in the height direction of the pillars and a connection provided at an end of the connecting member. A binding device configured by a wedge piece inserted through an insertion hole of a fixing metal fitting, wherein a tight binding edge portion of the wedge hole and a receiving edge of the insertion hole with the tip fixing portion of the connecting fixing metal fitting facing the surface of the support column. By pressing a wedge piece between the portions, the tip fixing portion is brought into pressure contact with the surface of the column, and the flange is provided on the X axis and the Y axis intersecting with each other at the center of the column. A first wedge hole, and a second wedge hole provided on the x-axis and the y-axis that intersect with each other at the center of the column and extend between the X-axis and the Y-axis. A tight binding edge is formed at a position at a distance D1 from the surface of the strut along the X axis and the Y axis, and the second wedge hole has a tight binding edge at a position at a distance D2 from the surface of the strut along the x axis and the y axis. And the distances D1 and D2 are configured such that D1≠<D2, and the coupling means that couples at least a pair of stanchions separated in the X direction is configured to include a first coupling member and a second coupling member, The connection fixing fitting of the first connection member is configured such that the tip fixing portion is brought into pressure contact with the surface of the column only when the wedge piece is press-fitted between the tightening edge portion of the first wedge hole and the receiving edge portion of the insertion hole. The connecting and fixing metal fitting of the second connecting member presses the tip fixing portion against the surface of the column only when the wedge piece is press-fitted between the tightening edge portion of the second wedge hole and the receiving edge portion of the insertion hole. The point is that it is configured to be.

In the embodiment of the present invention, the first connecting member is configured by a beam member that connects flanges located at the same height of a pair of columns to each other, and the beam member is arranged on a line connecting the centers of both columns. In addition, a plurality of beam members are vertically installed in parallel with each other, and the second connecting member is obliquely arranged so as to connect the flanges of the pair of columns located at different heights to each other. The slant member is arranged at a position closer to the outer space side of the scaffold than the line connecting the centers of both columns, and the connecting and fixing metal fittings provided at both ends of the slant member are respectively slant members. And a jaw fitting that is pivotally connected to the end of the shaft so as to be rotatable around a horizontal axis, and a jaw fitting that faces the second wedge hole of each flange while being bent from the pivot fitting toward the inner space side of the scaffolding. The wedge piece is inserted through the insertion hole provided in the jaw fitting, and the tip fixing portion is formed at the tip of the jaw fitting.

Among the connecting and fixing metal fittings at both ends of the diagonal member, the connecting and fixing metal fitting facing the upper flange is arranged with a pivotal fitting under the jaw fitting, and the jaw fitting and the pivot fitting are connected by a connecting piece, It is preferable that the connection fixing metal fitting facing the lower flange has a pivot metal fitting arranged above the jaw metal fitting and connects the jaw metal fitting and the pivot metal fitting with a connecting piece.

In a preferred embodiment, the connecting fixture of the beam member includes upper and lower jaws arranged above and below the flange, and a distance between an upper surface of the upper jaw and a lower surface of the lower jaw is H1. The chin bracket of the connecting and fixing bracket of the diagonal member is provided with upper and lower jaws arranged above and below the flange, and the distance between the lower surface of the upper jaw and the upper surface of the lower jaw is H2, and the distance H1, H2 is configured such that H2>H1.

In a further preferred embodiment, the wedge pieces provided on the connecting and fixing metal fittings of the first connecting member and the connecting and fixing metal fitting of the second connecting member are the same parts having the same shape, and the wedge pieces are pillars. A pressing portion along a vertical line is formed by the side edge facing the vertical edge, and a wedge portion is formed by the side edge on the opposite side of the pressing portion, the wedge portion being inclined upward and downward and away from the pressing portion. When the wedge pieces are press-fitted between the receiving edge portion of the insertion hole of the connecting and fixing metal fitting of the connecting member and the tightly connecting edge portion of the first wedge hole, the receiving edge of the tip fixing portion of the connecting and fixing metal fitting. The projecting dimension from the portion is formed to be equal to the distance M1 from the receiving edge portion to the surface of the column, and the receiving edge portion of the insertion hole of the connection fixing metal fitting of the second connecting member and the second wedge hole are tightly connected. When the wedge pieces are press-fitted between the edge portions so as to be tightly connected, the projecting dimension of the tip fixing portion of the connecting and fixing metal fitting from the receiving edge portion is equal to the distance M2 from the receiving edge portion to the surface of the column. And the distances M1 and M2 are configured such that M1<M2.

According to the present invention, the first fixing member 6 of the first connecting member 3a (the beam member 4) and the second connecting member 3b are respectively provided in the first wedge hole 15 and the second wedge hole 16 provided in the proximity of the flange 2. Since the connecting and fixing metal fitting 8 of the (oblique member 5) can be tightly connected, it is possible to enhance the rigidity of the scaffolding structure. Then, in order to construct a scaffold having a predetermined high rigidity, the first connecting member 3a and the second connecting member 3b must be installed at a predetermined position, which prevents erroneous work related to the installation position. According to the present invention, the connection fixing metal fitting 6 of the first connection member 3a can be tightly connected to the first wedge hole 15 but cannot be tightly connected to the second wedge hole 16 according to the present invention. Since the connection fixing metal fitting 8 of the member 3b can be tightly connected to the second wedge hole 16 but cannot be tightly connected to the first wedge hole 15, erroneous work is surely prevented, and a desired scaffolding is obtained. There is an effect that can be built.

It is a perspective view which shows one example of a scaffold construction body partially. FIG. 3 is a perspective view showing a pair of columns that are erected upright in the beam direction, and a beam member and a diagonal member as a connecting member that connects both columns. It is a perspective view which shows a pair of pillars standing upright in the direction between columns, and a preceding handrail and a cross member as a connecting member which connects both pillars. The wedge hole of the flange regarding one Embodiment of the binding device which concerns on this invention is shown, (A) is a top view which shows the arrangement state of a 1st wedge hole and a 2nd wedge hole, (B) is a 1st wedge hole. FIG. 6 is a plan view showing the distance from the fastening edge portion to the surface of the column, and (C) is a plan view showing the distance from the fastening edge portion of the second wedge hole to the surface of the column. It is a perspective view which shows the flange of a support|pillar and each connection member in a separated state regarding the A section of FIG. It is a perspective view which shows the flange of a support|pillar and each connection member in a separated state regarding the B section of FIG. In the inter-beam direction, a state in which a pair of columns is connected by beam members is shown, (A) is a plan view, and (B) is a front view. In the inter-beam direction, a state in which a pair of columns is connected by diagonal members is shown, (A) is a plan view, and (B) is a front view. 7A is an enlarged front view of the wedge piece, and FIG. 7B is an enlarged sectional view taken along the line AA of FIG. 7A. It is a BB line expanded sectional view of FIG. 8(A). 6A and 6B show a function of preventing erroneous work of the present invention, where FIG. 7A is a sectional view showing that the connecting and fixing metal fitting of the beam member cannot be tightly connected to the second wedge hole, and FIG. It is a sectional view showing that it is not possible to tightly bind to the first wedge hole.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

(Scaffolding structure)
As shown in FIGS. 1 to 3, the pillars 1 constituting the scaffolding structure are erected at a predetermined interval in the X direction of the beam direction and the Y direction of the girder direction which are orthogonal to each other. The flanges 2 are fixedly provided at predetermined intervals in the longitudinal direction, that is, the height direction, and the columns 1 and 1 adjacent to each other are connected to each other by the connecting member 3 via the flanges 2. The scaffolding construct of the present invention is mainly suitable for a scaffolding construct for supporting work, but may be a general scaffolding construct other than that.

(Posts and flanges)
The pillar 1 that constitutes the single-pipe scaffold is made of a metal circular pipe having a length L, and is vertically installed by extending the pillar from the bottom by connecting the pillars in order through a joint. 1 to 3 partially show a place where three columns 1a, 1b, and 1c are sequentially arranged from the lower side. At this time, the pillar 1 of one unit is fixed to the uppermost flange 2a at the upper end, and the flanges 2b, 2c, and 2d are equally spaced corresponding to the position where the length from the upper end to the lower end is divided into four. Is fixed. Therefore, a total of four flanges fixedly attached to the unit-supported column 1b shown in the figure are arranged at equal intervals, and further the column 2d at the lowest position of the column 1b is connected to the column below. The distance between the uppermost flange 2a of 1a is also equal to the distance.

(Connecting member in the beam direction)
As shown in FIG. 2, the connecting member 3 that connects the pair of columns 1 and 1 that are spaced apart in the X direction, which is the beam-to-beam direction, is configured to include the first connecting member 3a and the second connecting member 3b. In the case of the illustrated embodiment, the beam member 4 is constituted by the first connecting member 3a, and the diagonal member 5 is constituted by the second connecting member 3b.

The beam member 4 is arranged in a horizontal state by tightly connecting the connection fixing fittings 6 provided at both ends to the flanges 2 located at the same height of the pair of columns 1 and 1, and the plurality of beam members 4 (illustrated example) In the case of 2) are installed in parallel with a space above and below. In the case of the illustrated example, the upper beam member 4 is tightly connected to the uppermost flange 2a and the lower beam member 4 is tightly connected to the third flange 2c from the top between the columns 1 which are set as one unit. To be done. As shown in the figure, a scaffolding plate 7 is mounted on a predetermined beam member 4 selected in consideration of the overhead height of the worker via a hook to form a work floor.

The diagonal members 5 are arranged in an inclined state by connecting the connection fixing fittings 8 provided at both ends to the flanges 2 positioned at different heights of the pair of columns 1 and 1, and are arranged in an inclined state. In the case of 2) are installed in parallel with a space above and below. Explaining the vertically connected columns 1a and 1b shown in FIG. 2, the upper diagonal member 5 is tightly connected to the uppermost flange 2a of the X2 side column 1b with the upwardly-directed connecting and fixing metal fitting 8 being attached. The downwardly facing connecting fixture 8 is tightly connected to the third flange 2c from the top of the column 1b on the X1 side. In the lower diagonal member 5, the connection fixing metal fitting 8 which is directed upward is tightly connected to the third flange 2c from the top of the strut 1b on the X2 side, and the connection fixing metal fitting 8 which is directed downward is continuously provided downward on the X1 side. It is tightly connected to the uppermost flange 2a of the column 1a.

As a result, the diagonal member 5 not only connects the strut 1 on the X1 side and the strut 1 on the X2 side, but also the end portions on the X1 side and the end portion on the X2 side of the two vertically positioned beam members 4, 4. Are connected to each other, and further, the upper strut 1b on the X2 side and the lower strut 1a on the X1 side are connected to increase the rigidity of the scaffold construction body.

(Connecting member in the direction between columns)
As shown in FIG. 3, the connecting member 3 that connects the pair of columns 1 and 1 spaced apart in the Y direction, which is the inter-beam direction, is configured to include a third connecting member 3c and a fourth connecting member 3d. In the illustrated embodiment, the leading handrail 9 is formed by the third connecting member 3c, and the diagonal cross member 10 is formed by the fourth connecting member 3d.

The preceding handrail 9 is rotatably pivotally connected to both ends of the horizontal member 9a via a horizontal shaft and horizontally arranged between the pair of support columns 1 and 1 and downwardly with respect to each other. The support members 9b, 9b crossed toward each other are provided, and the claw pieces 11 (see FIG. 5) such as pins provided facing the pivotal portions of both support members 9b, 9b are provided as a pair of support columns 1, The horizontal member 9a is held in a horizontal state by being locked to the flange 2 (the uppermost flange 2a in the illustrated example) located at the same height of 1 and provided at the downward ends of both supporting members 9b, 9b. The connecting and fixing metal fitting 12 is tightly connected to the flange 2 located below (the third flange 2c from the top in the case of the example).

The diagonal cross member 10 is used in a state where two sets of the first diagonal cross member 10a and the second diagonal cross member 10b intersect each other, and the connection fixing metal fittings 13 provided at both ends of the diagonal cross material 10 are tightly connected to the flange 2. To be done. In the case of the illustrated example, in the first diagonal member 10a, the connecting and fixing metal fitting 13 at the end facing upward is tightly connected to the third flange 2c from the top of the column 1b on the Y2 side, and the connecting end facing downward. The fixture 13 is tightly connected to the uppermost flange 2a of the Y1 side support 1a. On the contrary, in the second diagonal cross member 10b, the connection fixing metal fitting 13 at the end facing upward is tightly connected to the third flange 2c from the top of the column 1b on the Y1 side, and the end facing downward. The connecting fixture 13 is tightly connected to the uppermost flange 2a of the Y1 side column 1a.

As a result, the diagonal cross member 10 not only connects the Y1 side support 1 and the Y2 side support 1, but is also located between the upper and lower leading handrails 9 and 9 and is located between the upper leading handrails 9. The lower end of the support member 9b and the upper end of the support member 9b of the lower handrail 9 are connected to each other, and the upper support 1b and the lower support 1b of the Y1 side support 1 and the Y2 side support 1 are connected to each other. By connecting the columns 1a, the rigidity of the scaffolding structure is increased.

(Binding device)
The binding device includes connecting and fixing metal fittings 6, 8, 12 provided on the wedge hole provided on the flange 2, the beam member 4, the diagonal member 5, the preceding handrail 9, and the diagonal member 10, respectively. It is composed of 13 parts.

(Wedge hole)
As shown in FIG. 4(A), the flange 2 is formed of a metal plate having a circular hole 14 into which the pillar 1 is inserted and is inserted in the center, and is located on the X axis and the Y axis that intersect with each other at the center of the pillar 1. And the four first wedge holes 15 located at the positions of x and y that intersect with each other at the center of the column 1 and extend midway between the x and y axes. It also has four second wedge holes 16.

In the illustrated embodiment, the x-axis and the y-axis are formed at positions where the x-axis and the y-axis are rotated by 45 degrees in the clockwise direction around the intersection, and the first wedge hole 15 constitutes the flange 2. Is formed by cutting out a metal plate that is long from the peripheral edge of the circular hole 14 along the X axis and the Y axis, and the second wedge hole 16 positions the metal plate forming the flange 2 on the x axis and the y axis. It is formed by punching. At this time, since the flange 2 is located between the adjacent first wedge holes 15 and leaves the hole edge portion of the circular hole 14, the hole edge portion is fixed to the peripheral surface of the column 1 by welding or the like. By doing so, the pillar 1 is firmly fixed.

Therefore, when constructing the scaffolding structure, the pillar 1 is erected in a state in which the X axis is oriented in the X direction of the beam direction and the Y axis is oriented in the Y direction of the girder direction.

When the wedge piece described later is inserted into the wedge hole, the wedge piece is configured to generate a pressing force toward the center of the support column 1 by pressing the wedge piece against the tight edge portion of the wedge hole. Reference numeral 15 forms a tightly binding edge portion 15a by the edge portions which are opposed to each other in the radial directions of the X axis and the Y axis, and the second wedge piece 16 is tightly bound by the edge portion which is opposed in the radial direction of the x axis and the y axis. The part 16a is formed.

Therefore, as shown in FIG. 4(B), the first wedge hole 15 has the binding edge 15a formed on the X-axis and the Y-axis at a position at a distance D1 from the surface of the column. As shown in FIG. 4(C), the second wedge hole 16 has the binding edge portion 16a formed at a position at a distance D2 from the surface of the column on the x axis and the y axis. The distances D1 and D are configured such that D1≠D2, and in the illustrated embodiment, D1<D2.

(Connecting fixture)
5 shows the flange 2 of the column 1, the connecting and fixing metal fittings 6 of the beam members 6 and the connecting and fixing metal fittings 8 of the diagonal members 5 arranged in the inter-beam direction X, and the inter-beam direction Y in the section A shown in FIG. The claw pieces 11 of the preceding handrail 9 and the connecting and fixing metal fittings 13 of the diagonal members 10 which are arranged are shown in a separated state.

FIG. 6 shows the flange 2 of the column 1, the connecting and fixing metal fitting 6 of the beam member 6 and the connecting and fixing metal fitting 8 of the diagonal member 5 arranged in the inter-beam direction X, and the inter-beam direction Y in the section B shown in FIG. The connecting and fixing metal fitting 12 of the preceding handrail 9 and the connecting and fixing metal fitting 13 of the cross member 10 are shown in a separated state.

The claw piece 11 of the preceding handrail 9 shown in FIG. 5 is inserted and locked downward into the first wedge hole 15 of the flange 2 which faces the Y direction. Therefore, no binding device is configured there. The connecting and fixing metal fitting 13 of the diagonal member 10 arranged in the Y direction is adjacent to the first wedge hole 15 in which the claw piece 11 is locked, based on the same structure as the connecting and fixing metal fitting 8 of the diagonal material 5 described later. The second wedge hole 16 (in the case of the illustrated configuration, the second wedge hole 16 adjacent on the counterclockwise direction side) is tightly connected by a wedge piece. In addition, in the illustrated embodiment, the diagonal members 10 and the diagonal members 5 are illustrated as having different configurations, but the diagonal members 5 arranged in the X direction are used as they are, and thus the diagonal members arranged in the Y direction. The mixed material 10 may be used.

The connecting and fixing metal fitting 6 of the beam member 6 arranged in the X direction is tightly connected to the first wedge hole 15 of the flange 2 facing in the X direction by a wedge piece, and the connecting and fixing metal fitting 8 of the diagonal member 5 is the first The second wedge hole 16 adjacent to the wedge hole 15 (the second wedge hole 16 adjacent in the clockwise direction in the case of the illustrated configuration) is tightly connected by a wedge piece.

(Beam member)
FIG. 7 and FIG. 9 show a binding device including the connecting and fixing metal fitting 6 of the beam member 4 and the first wedge hole 15 of the flange 2.

As shown in FIG. 7, the beam member 4 is arranged on a line C connecting the centers of the pair of stanchions 1, 1 and is connected and fixed to the first wedge hole 15 of the flange 2 located on the same line. Is tied up.

As shown in FIG. 7 and FIG. 9(B), the connecting and fixing bracket 6 includes upper and lower jaws arranged above and below the flange 2, and the distance between the upper surface of the upper jaw and the lower surface of the lower jaw is set. The seat portion 17 is formed to have a height H1 and projects downward from the upper jaw portion, and is configured to be placed on the flange 2. Then, the tip fixing portion 18 that is brought into contact with the surface of the column 1 is constituted by the tip portions of both or one of the upper and lower jaw portions, and the wedge piece 20 is inserted into the insertion hole 19 that penetrates the upper and lower jaw portions. Of the inner peripheral wall of the insertion hole 19, the inner wall portion facing the tip fixing portion 18 forms the receiving edge portion 19a.

As shown in FIG. 9(A), the wedge piece 20 has a pressing portion 20a formed by aligning a side edge facing the support 1 in the vertical direction and a side edge on the opposite side of the pressing portion 20a. It has a wedge portion 20b formed by inclining in an upward direction from the pressing portion 20a.

Therefore, in the connection fixing metal fitting 6, the seat portion 17 is placed on the flange 2 and the tip fixing portion 18 is exposed to the surface of the support column 1 with the tightly connecting edge portion 15a of the first wedge hole 15 and the insertion hole. When the wedge piece 20 is press-fitted between the receiving edge portions 19a of 19, the pressing portion 20a pushes the receiving edge portion 19a while the wedge portion 20b of the wedge piece 20 moves downward along the tight binding edge portion 15a. The tip fixing portion 18 is tightly connected to the surface of the support column while being pressed against it.

As described above, the connecting and fixing metal fitting 6 of the beam member 4 has the wedge piece 20 between the fastening edge portion 15a formed at the position of the distance D1 from the support surface in the first wedge hole 15 and the receiving edge portion 19a of the insertion hole 19. In the state of being tightly connected by press-fitting, the protruding dimension of the tip fixing portion 18 projecting from the receiving edge portion 19a is formed to be equal to the distance M1 from the receiving edge portion 19a to the surface of the column 1 in the tightly attached state. ..

(Diagonal material)
FIG. 8 and FIG. 10 show a binding device including the connecting and fixing metal fitting 8 of the diagonal member 5 and the second wedge hole 16 of the flange 2.

As shown in FIG. 8, the diagonal member 5 is arranged more eccentrically to the outer space side of the scaffolding than the line C connecting the centers of the pair of stanchions 1, 1, and the connecting and fixing metal fittings 8 provided at both ends are , A pivotal metal fitting 21 pivotally connected to the end of the diagonal member 5 so as to be rotatable about a horizontal axis, and a flange 2 of each of the flanges 2 bent from the pivotal metal fitting 21 toward the inner space side of the scaffold. The jaw metal fitting 22 facing the second wedge hole 16 is provided.

At this time, as shown in FIG. 8(B), among the connecting and fixing metal fittings 8, 8 at both ends of the diagonal member 5, the connecting and fixing metal fitting 8 facing the upper flange 2 is located below the jaw fitting 22 and is pivotally connected. 21 is arranged, and the jaw metal fitting 22 is connected and fixed to the connecting piece 23 extending upward from the pivotal metal fitting 21. On the contrary, the connection fixing metal fitting 8 facing the lower flange 2 arranges the pivot metal fitting 21 above the jaw metal fitting 22 and attaches the jaw metal fitting 22 to the connecting piece 23 extending downward from the pivot metal fitting 21. The connection is firmly fixed.

Therefore, when the connecting and fixing metal fitting 8 of the diagonal member 5 is tightly connected to the flange 2 to which the connecting and fixing metal fitting 6 of the beam member 4 is tightly connected, the connecting piece 23 is rotated together with the pivoting metal fitting 21. By doing so, the jaw metal fitting 22 can be advanced toward the flange 2 from the largely retracted posture, which facilitates the work of facing the second wedge hole 16.

As shown in FIG. 10, the jaw fitting 22 includes upper and lower jaws arranged above and below the flange 2, and is formed so that the distance between the lower surface of the upper jaw and the upper surface of the lower jaw is H2. At this time, the distance H2 is formed so that H2>H1 with respect to the distance H1 of the connecting and fixing metal fitting 6 of the beam member 4 described above, and the seat portion 24 protruding downward from the upper jaw portion is formed. It is configured to be mounted on the flange 2. Then, the tip fixing portion 25 that is brought into contact with the surface of the support column 1 is constituted by the tip portions of both or one of the upper and lower jaw portions, and the wedge piece 20 is inserted into the insertion hole 26 that penetrates the upper and lower jaw portions. Of the inner peripheral wall of the insertion hole 26, the inner wall portion facing the tip fixing portion 25 forms a receiving edge portion 26a.

Therefore, when the jaw metal fitting 22 of the connection fixing metal fitting 8 of the diagonal member 5 is tightly connected to the flange 2 to which the connection fixing metal fitting 6 of the beam member 4 is tightly connected, as shown in FIG. Even when the metal fitting 22 overlaps the connection fixing metal fitting 6, mutual interference is avoided as shown in FIG. 8B due to the above-described configuration of H2>H1, and the jaw metal fitting 22 is suitable for the flange 2. Can be tied up.

It is preferable that the wedge piece 20 also serves as the same part having the same shape as the wedge piece 20 used for the connecting and fixing metal fitting 6 of the beam member 4, whereby the cost can be reduced as a whole.

Therefore, in the jaw fitting 22, the seat portion 24 is placed on the flange 2 and the tip fixing portion 25 is exposed to the surface of the support column 1 in the state in which the binding edge portion 16a of the second wedge hole 16 and the insertion hole 26 are inserted. When the wedge piece 20 is press-fitted between the receiving edge portions 26a of the, the pressing portion 20a pushes the receiving edge portion 26a while the wedge portion 20b of the wedge piece 20 moves downward along the binding edge portion 16a. The tip fixing portion 25 is tightly connected to the surface of the support column while being pressed against the surface.

As described above, the jaw metal fitting 22 that constitutes the connecting and fixing metal fitting 8 of the diagonal member 5 has the fastening edge portion 16a formed at the position of the distance D2 from the support surface in the second wedge hole 16 and the receiving edge portion 26a of the insertion hole 26. With the wedge piece 20 press-fitted in between, the protruding size of the tip fixing portion 25 protruding from the receiving edge portion 26a becomes equal to the distance M2 from the receiving edge portion 26a to the surface of the column 1 in the tightly connected state. Is formed.

(Prevention of erroneous work)
According to the above configuration, the connecting and fixing metal fitting 6 of the beam member 4 has a tip end only when the wedge piece 20 is press-fitted between the tightly connecting edge portion 15a of the first wedge hole 15 and the receiving edge portion 19a of the insertion hole 19. It is possible to press the fixing portion 18 against the surface of the column 1 to tightly bond them. If this is wrong, and if the worker tries to tightly connect the connecting fixture 6 to the second wedge hole 16, as shown in FIG. 11(A), the tightly connecting edge portion 16a of the second wedge hole located at the distance D2. As a result of the wedge piece 20 being inserted along with, the tip fixing portion 18 having the protrusion dimension of the distance M1 does not reach the surface of the support column 1 and it is possible to inform the operator that it is an erroneous operation.

Similarly, the jaw metal member 22 of the connecting and fixing metal member 8 of the diagonal member 5 has a tip end only when the wedge piece 20 is press-fitted between the tightly connecting edge portion 16a of the second wedge hole 16 and the receiving edge portion 26a of the insertion hole 26. It is possible to press the fixing portion 25 against the surface of the column 1 to tightly bond them. If this is erroneous and if the operator tries to tightly connect the jaw fitting 22 to the first wedge hole 15, as shown in FIG. 11(B), the tip fixing portion 25 having the protrusion dimension of the distance M2 is used as the support 1 The wedge piece 20 cannot be inserted into the first wedge hole 15 in which the binding edge portion 15a is located at the distance D1 in a state of being in contact with the surface of the above, and thus informs the operator that this is an erroneous operation. be able to.

1 (1a, 1b, 1c) Strut 2 (2a, 2b, 2c, 2d) Flange 3 Connecting member 3a First connecting member 3b Second connecting member 3c Third connecting member 3d Fourth connecting member 4 Beam member 5 Oblique member 6 Beam member connecting and fixing metal fittings 7 Scaffolding plate 8 Slanting material connecting and fixing metal fittings 9 Preceding handrail 9a Horizontal member 9b Supporting material 10 Oblique material 10a First obliquely crossing material 10b Second obliquely crossing material 11 Claw piece 12 Preliminary handrail supporting material Connection fixing metal fittings 13 diagonal connection material fixing metal fittings 14 circular hole 15 first wedge hole 15a tightly connecting edge portion 16 second wedge hole 16a tightly connecting edge portion 17 seat portion of beam fixing member fixing portion 18 beam member connecting and fixing metal fitting Tip fixing part 19 of beam member connecting and fixing metal fitting insertion hole 19a Receiving edge part 20 Wedge piece 20a Pressing part 20b Wedge part 21 Connecting member of diagonal timber Pivoting metal fitting 22 Joint member of diagonal fixing metal fitting 23 Piece 24 Seat part of jaw metal fitting 25 Tip fixing part of jaw metal fitting 26 Insertion hole 26a of jaw metal fitting Receiving edge portion

Claims (5)

In a scaffold constructed by connecting pillars standing upright in the X direction of the beam direction and the Y direction of the girder direction that are orthogonal to each other via a connecting member,
A binding device constituted by a wedge hole of a flange fixedly provided at a predetermined interval in the height direction of the column, and a wedge piece inserted through an insertion hole of a connection fixing metal fitting provided at an end of the connection member,
With the tip fixing portion of the connecting and fixing metal fitting faced to the surface of the column, a wedge piece is press-fitted between the tightly connecting edge portion of the wedge hole and the receiving edge portion of the insertion hole, so that the tip fixing portion of the column is fixed. It is configured to be pressed against the surface,
The flange (2) intersects with the first wedge hole (15) provided on the X-axis and the Y-axis, which intersect with each other at the center of the column (1), and intersects with each other at the center of the column, and the X-axis. And a second wedge hole (16) provided on the x-axis and the y-axis extending between the Y-axis,
The first wedge hole forms a binding edge portion (15a) at a position of a distance D1 along the X axis and the Y axis from the strut surface, and the second wedge hole extends from the strut surface to the x axis and the y axis. A tight edge portion (16a) is formed at a distance D2 along the distance D1, D2, and the distances D1 and D2 are configured such that D1≠<D2,
A connecting means for connecting at least a pair of columns separated in the X direction is configured to include a first connecting member (3a) and a second connecting member (3b),
The connecting fixture (6) of the first connecting member (3a) includes a wedge piece (20), a tight edge portion (15a) of the first wedge hole (15) and a receiving edge portion (19a) of the insertion hole (19). It is configured so that the tip fixing part (18) is brought into pressure contact with the surface of the column only when press-fitting between
The connecting and fixing metal fitting (8) of the second connecting member (3b) includes the wedge piece (20), the tightening edge portion (16a) of the second wedge hole (16) and the receiving edge portion (26a) of the insertion hole (26). A binding device for a scaffold, characterized in that the tip fixing portion (25) is configured to be brought into pressure contact with the surface of the column only when it is press-fitted between. The first connecting member (3a) is composed of a beam member (4) for connecting flanges located at the same height of a pair of columns to each other, and the beam members are arranged on a line connecting the centers of both columns. At the same time, a plurality of beam members are installed in parallel with a vertical gap.
The second connecting member (3b) is composed of a diagonal member (5) that is arranged so as to be inclined so that flanges located at different heights of a pair of columns are mutually connected, and the diagonal member is the center of both columns. It is offset from the line connecting
The connecting and fixing metal fittings (8) provided at both ends of the diagonal member (5) respectively include a pivotal fitting (21) pivotally connected to the end portion of the diagonal member so as to be rotatable around a horizontal axis, The jaw piece (22) is provided so as to face the second wedge hole (16) of each flange in a state of being bent toward the inner space side of the scaffold from the binding piece, and the wedge piece is provided in the insertion hole (26) provided in the jaw piece. The binding device for a scaffold according to claim 1, wherein the tip fixing portion (25) is formed at the tip of the jaw fitting while the (20) is inserted therethrough. Of the connecting and fixing metal fittings (8) at both ends of the diagonal member (5), the connecting and fixing metal fittings facing the upper flange are arranged with the pivoting metal fittings (21) below the jaw fittings (22), and Connect the metal fittings and pivotal fittings with the connecting piece (23),
The connecting and fixing metal fitting facing the lower flange is configured by arranging the pivot metal fitting (21) above the jaw metal fitting (22) and connecting the jaw metal fitting and the pivot metal fitting with the connecting piece (23). The binding device for a scaffold according to claim 2, wherein the binding device is a scaffold. The connecting and fixing metal fitting (6) of the beam member (4) includes upper and lower jaws arranged above and below the flange, and the distance between the upper surface of the upper jaw and the lower surface of the lower jaw is formed to be H1.
The jaw metal fitting (22) of the connecting and fixing metal fitting (8) of the diagonal member (5) includes upper and lower jaw parts arranged above and below the flange, and the distance between the lower surface of the upper jaw part and the upper surface of the lower jaw part. 4. The binding device for a scaffold according to claim 2 or 3, wherein the binding device is formed in H2 and the distances H1 and H2 are configured such that H2>H1. The wedge pieces (20) provided on the connecting and fixing metal fittings (6) of the first connecting member (3a) and the connecting and fixing metal fittings (8) of the second connecting member (3b) are the same parts having the same shape. The wedge piece also serves as a pressing portion (20a) along the vertical line formed by the side edge facing the strut, and the side edge on the opposite side of the pressing portion separates from the pressing portion from bottom to top. Forming an inclined wedge part (20b),
A wedge piece (20) is provided between the receiving edge portion (19a) of the insertion hole of the connection fixing metal fitting (6) of the first connection member (3a) and the tight connection edge portion (15a) of the first wedge hole (15). When tightly connected by press fitting, the protruding dimension of the tip fixing portion (18) of the connecting and fixing metal fitting from the receiving edge portion (19a) becomes equal to the distance M1 from the receiving edge portion (19a) to the surface of the column. Is formed as
A wedge piece (20) is provided between the receiving edge portion (26a) of the insertion hole of the connection fixing metal fitting (8) of the second connection member (3b) and the tight connection edge portion (16a) of the second wedge hole (16). When tightly connected by press fitting, the protruding dimension of the tip fixing portion (25) of the connecting and fixing metal fitting from the receiving edge portion (26a) becomes equal to the distance M2 from the receiving edge portion (26a) to the surface of the column. Is formed as
The binding device for a scaffold according to claim 1, 2, 3 or 4, wherein the distances M1 and M2 are configured such that M1<M2.

Images