WO2013153943A1

WO2013153943A1 - Temporary scaffold joint

Info

Publication number: WO2013153943A1
Application number: PCT/JP2013/058605
Authority: WO
Inventors: 克之星野; 南雲　隆司
Original assignee: ホリー株式会社
Priority date: 2012-04-12
Filing date: 2013-03-25
Publication date: 2013-10-17
Also published as: CN104246093B; CN104246093A; JP5016736B1; KR20140123605A; KR101503228B1; JP2013217154A

Abstract

Provided is a temporary scaffold joint which enables an insertion operation of a second wedge member into a wedge insertion hole from above to be performed on a first wedge member and a temporary scaffold member which have been positioned in a front-back direction that is the direction to the support side. A temporary scaffold joint, wherein by inserting a first wedge member (11) and a second wedge member (12) that are provided in a temporary scaffold member into a wedge insertion hole (6) of a wedge receiving member (4) provided in a support (2), the front side end (14) on the support (2) side of the first wedge member is brought into contact with the support (2) with pressure, the back side end on the side opposite to the support (2) side of the second wedge member is brought into contact with the inner surface of the wedge insertion hole (6) with pressure, the front side end on the support (2) side of the second wedge member is brought into contact with the first wedge member with pressure, and thereby the temporary scaffold member is coupled to the support (2). When the first wedge member is inserted in the wedge insertion hole (6), the front side end (14) of the first wedge member is in contact with the support (2), and the back side end (20) of the first wedge member is in contact with the inner surface of the wedge insertion hole (6).

Description

Joint for temporary scaffolding

The present invention relates to a temporary scaffold joint for connecting a temporary scaffold member to a support for constructing a temporary scaffold, and is constructed in various works such as a construction work site, a civil engineering work site, and a dismantling work site, for example. The present invention can be used to connect a column of a temporary scaffold and various temporary scaffold members such as a handrail member and a carrying frame.

A temporary scaffolding is constructed at a construction site such as a construction work site, and this temporary scaffolding is constructed by connecting a temporary scaffolding member such as a handrail member or a carrying frame to a standing pillar. The members are connected by a temporary scaffold joint.

The joint for temporary scaffolding shown in the following Patent Document 1 is provided on a support column, and a wedge receiving member in which a wedge insertion hole reaching an end of the support column side to the support column is formed in the vertical direction; A first wedge member that is fixed to the temporary scaffolding member and includes a portion in which the width dimension in the front-rear direction, which is the direction toward the support column, is reduced downward, and the temporary scaffolding member in the vertical direction with respect to the first wedge member And a second wedge member having a portion in which the width dimension in the front-rear direction is reduced downward, the first wedge member and the second wedge member being a wedge receiving member. By inserting the wedge into the wedge insertion hole from above, the front end of the first wedge member on the column side comes into pressure contact with the column, and the rear end of the second wedge member opposite to the column side is inserted into the wedge. The front end of the second wedge member on the support column side is in pressure contact with the inner surface of the hole. Pressed against the 1 wedge member temporary scaffold member is adapted to be connected to the strut.
Special Table 2000-503358

In the joint for a temporary scaffold of Patent Document 1, the width dimension of the first wedge member is not so large as compared with the dimension of the wedge insertion hole, and when the first wedge member is inserted into the wedge insertion hole from above, When the front end of the first wedge member on the support column side is brought into contact with the support column, the rear end of the first wedge member opposite to the support column side does not contact the inner surface of the wedge insertion hole. When the rear end portion of the one wedge member is brought into contact with the inner surface of the wedge insertion hole, the front end portion of the first wedge member is not brought into contact with the support column. Therefore, until the second wedge member is inserted into the wedge insertion hole from above and the temporary scaffold member is connected to the support column, the first wedge member and the temporary scaffold member are in the front-rear direction, which is the direction toward the support column side. It is not positioned. For this reason, the operation of inserting the second wedge member into the wedge insertion hole from above must be performed on the first wedge member and the temporary scaffold member that are movable in the front-rear direction.

An object of the present invention is to perform the insertion operation of the second wedge member from above into the wedge insertion hole with respect to the first wedge member and the temporary scaffold member positioned in the front-rear direction, which is the direction toward the support column. It is in providing the joint for temporary scaffolds which becomes possible.

A joint for a temporary scaffold according to the present invention is a joint for a temporary scaffold for connecting a member for a temporary scaffold to a support that is erected to construct a temporary scaffold. A wedge receiving member whose end reaches the column is formed in a vertical direction, and is fixed to the temporary scaffold member, and the width dimension in the front-rear direction, which is the direction toward the column, is downward. A first wedge member having a reduced portion, and a portion arranged on the temporary scaffold member so as to be movable in the vertical direction with respect to the first wedge member, wherein the width dimension in the front-rear direction is reduced downward The first wedge member and the second wedge member are inserted into the wedge insertion hole of the wedge receiving member from above, so that the support column of the first wedge member is provided. The front end of the side is pressed against this column The rear end portion of the second wedge member opposite to the support column is in pressure contact with the inner surface of the wedge insertion hole, and the front end portion of the second wedge member on the support column side is in pressure contact with the first wedge member. Then, in the temporary scaffold joint in which the temporary scaffold member is connected to the support column, when the first wedge member is inserted into the wedge insertion hole, the front end of the first wedge member is the support column. And the rear end of the first wedge member opposite to the support column is in contact with the inner surface of the wedge insertion hole.

In the joint for a temporary scaffold according to the present invention, when the first wedge member is inserted into the wedge insertion hole, the front end portion of the first wedge member abuts on the support and is opposite to the front end portion. Since the rear end of the first wedge member is in contact with the inner surface of the wedge insertion hole, when the first wedge member is inserted into the wedge insertion hole by these contact, the first wedge member and the temporary scaffold The member can be positioned in the front-rear direction, which is the direction toward the support column, and therefore, the first wedge member that does not move in the front-rear direction is inserted into the wedge insertion hole of the second wedge member from above. In addition, this can be performed on the temporary scaffold member, whereby the second wedge member can be easily inserted into the wedge insertion hole from above and driven.

In the present invention, when the first wedge member is inserted into the wedge insertion hole, the number of rear end portions of the first wedge member that contact the inner surface of the wedge insertion hole may be one, or the first wedge Two pieces separated in the thickness direction of the member may be used.

According to the latter, since the number of the rear end portions of the first wedge member that abuts the inner surface of the wedge insertion hole is two in the thickness direction of the first wedge member, the first wedge member is inserted into the wedge. When inserted into the hole, the first wedge member and the temporary scaffolding can be positioned more reliably in the front-rear direction.

In addition, in order to set the number of the rear end portions of the first wedge member in contact with the inner surface of the wedge insertion hole in this way to two, these two locations are, for example, the column side of the first wedge member. It is good also as two corner | angular parts which the surface of the opposite side and the both surfaces of the thickness direction of the 1st wedge member which make an angle with this back surface cross | intersect.

According to this, when the first wedge member is inserted into the wedge insertion hole, the first wedge member and the temporary scaffold member can be positioned in the thickness direction of the first wedge member with respect to the support column. Since the wedge member and the temporary scaffolding material do not move in the thickness direction of the first wedge member, the operation of inserting the second wedge member into the wedge insertion hole from above and driving it can be performed more easily.

Then, as described above, the rear surface of the first wedge member on the side opposite to the column side intersects with both surfaces in the thickness direction of the first wedge member that form an angle with the rear surface, as described above. The two corners to be used are, for example, a curved projecting portion that projects a portion of the wedge insertion hole that forms a portion on the opposite side of the column side to the side opposite to the column side. This can be realized.

Note that each of the two corners may be a chamfered corner or a chamfered corner.

Further, when the number of the rear end portions of the first wedge member that abuts against the inner surface of the wedge insertion hole when the first wedge member is inserted into the wedge insertion hole as described above, These two locations may be the two rear surfaces of the first wedge member on the side opposite to the column side.

According to this, since the rear end portion of the first wedge member that contacts the inner surface of the wedge insertion hole becomes two rear surfaces, the contact between the first wedge member and the inner surface of the wedge insertion hole is performed as surface contact. Therefore, it is possible to more reliably achieve positioning of the first wedge member and the temporary scaffold member in the front-rear direction.

Then, as described above, the two locations are the two rear surfaces of the first wedge member on the side opposite to the column side, so that the inner surfaces of the wedge insertion holes with which the rear surfaces abut are inserted into the wedges. For example, it can be realized by making the inner surface of a portion of the hole parallel to the rear surface and forming the side opposite to the column side.

In the present invention, the first wedge member is formed with an insertion groove in which the second wedge member can be inserted in the vertical direction. The insertion groove is inserted into the insertion groove from above, and the rear side end portion is a wedge insertion hole. The second wedge member in pressure contact with the inner surface is in pressure contact with the first wedge member at the two upper and lower portions of the front end, and the upper portion of these two upper and lower portions is in pressure contact with the inner surface of the wedge insertion hole. The second wedge member may be located above the rear end portion of the second wedge member, and the lower portion may be located lower than the rear end portion of the second wedge member pressed against the inner surface of the wedge insertion hole. .

According to this, when the front end of the second wedge member presses against the first wedge member due to the reaction caused by the location of the rear end of the second wedge member pressing against the inner surface of the wedge insertion hole, Since the location of the front end portion of the second wedge member that is in pressure contact with the wedge member is two locations, the top and bottom portions that are vertically separated from the location of the rear end portion of the second wedge member that is in pressure contact with the inner surface of the wedge insertion hole. Thus, it is possible to stabilize and press-contact the front end portion of the second wedge member with the first wedge member at the two upper and lower positions, whereby the temporary scaffold member can be more reliably connected to the support column.

Furthermore, in the present invention, the first wedge member that is in pressure contact with the support has two front and lower end portions, and the upper portion of the two upper and lower portions is in pressure contact with the inner surface of the wedge insertion hole. The lower portion may be located above the rear end portion, and the lower portion may be located below the rear end portion of the second wedge member that is in pressure contact with the inner surface of the wedge insertion hole.

According to this, when the rear end portion of the second wedge member is pressed against the inner surface of the wedge insertion hole, and the front end portion of the second wedge member is pressed against the first wedge member, the first wedge is pressed against the support column. Since the front end portion of the member has two upper and lower portions that are vertically separated from the position of the rear end portion of the second wedge member that is in pressure contact with the inner surface of the wedge insertion hole, the first wedge member is located at these two upper and lower portions. Thus, the front end portion can be stably brought into pressure contact with the support, and therefore, the temporary scaffold member can be more reliably connected to the support.

In the present invention, the first wedge member is formed with an insertion groove in which the second wedge member can be inserted in the vertical direction, and the insertion groove has a width dimension corresponding to the thickness dimension of the second wedge member. A stepped groove having a first groove portion and a second groove portion having a larger width dimension than the first groove portion, and is formed below the second wedge member in the thickness direction of the second wedge member. Protrusions that project and have a length that allows the projecting length to move up and down in the second groove are provided, and the second wedge member is brought into contact with the upper portion of the first wedge member by the projecting portion contacting the upper portion of the first wedge member. A first drop prevention portion is provided for preventing the first wedge member from falling off from the upper portion of the first wedge member, and the second wedge member is in contact with the upper surface of the first wedge member at the upper portion of the second wedge member. You may provide the 2nd drop prevention part for preventing falling from the lower part of 1 wedge member .

According to this, the fall of the second wedge member from the upper part of the first wedge member is prevented by the first drop prevention part, and the fall of the second wedge member from the lower part of the first wedge member is prevented by the second drop prevention part. Therefore, for example, when the temporary scaffold member is brought into the temporary scaffold construction site, the second wedge member cannot be separated from the first wedge member fixed to the temporary scaffold member. Therefore, management, handling, and the like of the second wedge member can be facilitated.

In the above-described present invention, the temporary scaffold member connected to the support column by the temporary scaffold joint according to the present invention may be a member for any application, and the temporary scaffold member is, for example, erected at intervals. A handrail member or a beam frame spanned between the supporting columns may be used, or an overhanging bracket attached to the supporting column, a carrying frame, an auxiliary step, or the like may be used.

In addition, the wedge receiving member provided on the support and having the wedge insertion hole formed in the vertical direction may be a flange-like member made of a horizontal plate, or has a large vertical dimension, and the wedge insertion hole is formed in the vertical direction. It may be a pocket-shaped one penetratingly formed.

Further, the joint for a temporary scaffold according to the present invention can be applied to a temporary scaffold used for any work, and this temporary scaffold may be constructed at a construction work site or constructed at a civil engineering work site, for example. However, it may be constructed at a dismantling work site.

According to the present invention, the second wedge member is inserted into the wedge insertion hole from above with respect to the first wedge member and the temporary scaffold member positioned in the front-rear direction, which is the direction toward the support column. The effect that can be done.

FIG. 1 is a front view showing a temporary scaffold in which a joint for a temporary scaffold according to an embodiment of the present invention is employed. FIG. 2 is a perspective view showing the temporary scaffold joint of the present embodiment. FIG. 3 is a plan view showing a wedge receiving member provided on the support column. 4 is a cross-sectional view taken along line S4-S4 of FIG. 1, and is a plan view showing the temporary scaffold joint of FIG. FIG. 5 is a front view showing the temporary scaffold joint of FIG. FIG. 6 is a front sectional view of the temporary scaffold joint of FIG. 7 is a cross-sectional view taken along line S7-S7 in FIG. FIG. 8 is a front view of the temporary scaffold joint after the first wedge member is inserted into the wedge insertion hole of the wedge receiving member and before the second wedge member is inserted. FIG. 9 is a front sectional view of the temporary scaffold joint of FIG. 10 is a cross-sectional view taken along line S10-S10 in FIG. FIG. 11 is a view similar to FIG. 10 showing another embodiment.

DESCRIPTION OF SYMBOLS 1 Temporary scaffold 2 Support | pillar 4 Wedge receiving member 6 Wedge insertion hole 6C Curve protrusion 6D The part of the wedge insertion hole parallel to the rear surface of the 1st wedge member 10 Handrail member which is a temporary scaffold member 11 1st wedge member 12 Second wedge member 13 Insertion groove 13A First groove portion 13B Second groove portion 14 Front end portion of first wedge member 16 Front end portion of second wedge member 17 Projection portion 20 Rear end portion of first wedge member 21 First Wedge member rear surfaces 22, 23 Both surfaces of first wedge member in

thickness direction

24, 25 Corner portion 26 Second wedge member rear end portion 26A Rear end portion of second wedge member in pressure contact with insertion groove Location 31 First drop prevention part 32 Second drop prevention part A Joint for temporary scaffolding

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows a temporary scaffold 1 to which the temporary scaffold joint A according to the present embodiment is applied. This temporary scaffold 1 is constructed by including a plurality of support columns 2 erected at intervals and a handrail member 10 spanned between two adjacent support columns 2. A jack base member 3 is disposed at the lower end of each of the columns 2 so that the height of the columns 2 can be adjusted. And each handrail member 10 is a member for temporary scaffolding of this embodiment in which an end portion is connected to the column 2.

Both ends of the handrail member 10 are connected to the support column 2 by the temporary scaffold joint A according to the present embodiment. The temporary scaffold joint A includes the wedge receiving member 4 fixed to the support column 2 by welding, and the handrail. A first wedge member 11 fixed to the end portion of the member 10 by welding, and a second wedge member 12 disposed at the end portion of the handrail member 10 so as to be movable in the vertical direction with respect to the first wedge member 11. It is configured to include. In addition, the direction to the support | pillar 2 side is the front-back direction about the 1st and

2nd wedge members

11 and 12, and the horizontal direction orthogonal to this front-back direction is the thickness about the 1st and

2nd wedge members

11 and 12. Direction.

FIG. 2 shows a perspective view of the temporary scaffold joint A. As shown in FIG. 2, the wedge receiving member 4 in this embodiment has a thick plate fixed to the support column 2 horizontally. Therefore, the wedge receiving member 4 has a flange shape.

FIG. 3 shows a plan view of the flange-shaped wedge receiving member 4. The wedge receiving member 4 has a center hole 5 for inserting the support column 2, four wedge insertion holes 6 formed at an angular interval of 90 degrees around the center hole 5, and the wedge insertion holes 6. For example, a hole 7 formed so that the end of the brace member can be connected to each other is provided, and each wedge insertion hole 6 is a narrow first hole provided on the column 2 side. 6A and a stepped shape including a wide second hole 6B connected to the first hole 6A and provided on the side opposite to the support column 2 side. The width direction of the first and

second hole portions

6A and 6B is a horizontal direction perpendicular to the vertical direction, which is the length direction of the support column 2, and the first and

second wedge members

11 and 12 described above. It is also the thickness direction.

The portion of the first hole 6A on the support column 2 side is connected to the center hole 5 in which the support column 2 is inserted. Therefore, the portion on the support column 2 side of the wedge insertion hole 6 is The outer peripheral surface is exposed, and the portion of the second hole 6B on the side opposite to the column 2 side is curved and protrudes to the side opposite to the column 2 side. Therefore, a portion of the wedge insertion hole 6 on the side opposite to the column 2 side is a curved projecting portion 6C that curves and projects to the side opposite to the column 2 side.

4 is a cross-sectional view taken along line S4-S4 of FIG. 1, and a plan view of the joint A for a temporary scaffolding is shown, and FIG. 5 is a front view of the joint A. FIG. 6 shows a front sectional view of the joint A. As shown in FIG. 6, the first wedge member 11 fixed to the end portion of the handrail member 10 is located above the wedge insertion hole 6 formed through the wedge receiving member 4 vertically. Can be inserted. FIG. 10, which is a sectional view taken along line S10-S10 in FIG. 9, shows a plan sectional view of the first wedge member 11. As shown in FIG. The first wedge member 11 is provided on the second side, and the first wedge member 11 has a smaller dimension in the thickness direction. The front portion 11A is connected to the front portion 11A and is provided on the opposite side of the support column 2 side. 11 has a stepped shape including a rear portion 11B having a large dimension in the thickness direction. When the first wedge member 11 is inserted into the wedge insertion hole 6 from above, the front part 11A is inserted into the first hole part 6A, and the rear part 11B is inserted into the second hole part 6B.

The front part 11A and the first hole part 6A may be tapered so as to taper toward the support column 2, and thereby the first wedge member 11 may be easily manufactured by bending a sheet metal or the like.

As shown in FIG. 10, an insertion groove 13 through which the second wedge member 12 can be inserted in the vertical direction is formed in the first wedge member 11 so as to penetrate vertically. The insertion groove 13 is provided on the support column 2 side, and the first groove portion 13A in which the width dimension in the thickness direction of the first wedge member 11 which is also in the thickness direction of the second wedge member 12 is reduced. The second groove 13B is connected to the first groove 13A and provided on the side opposite to the support column 2 side, and the width of the first wedge member 11 in the thickness direction is increased. ing. As can be seen from FIG. 10, the thickness dimension of the second wedge member 12 is a dimension corresponding to the width dimension of the first groove portion 13A. Therefore, the second wedge member 12 is inserted into the first groove portion 13A. The thickness dimension of the second wedge member 12 can be set in the longitudinal direction of the handrail member 10 shown in FIGS. 2 and 5, that is, the front-rear direction which is the direction toward the support column 2. It is continuous.

Further, as shown in FIG. 10, the end of the insertion groove 13 on the side of the support 2 is a closed end, and the end of the insertion groove 13 on the side opposite to the support 2 is Although it is an open end, at the height portion of the first wedge member 11 where the end of the handrail member 10 is fixed, the end of the insertion groove 13 opposite to the column 2 side is It is blocked by the handrail member 10.

As described above, since the end of the insertion groove 13 on the column 2 side is a closed end, as shown in FIGS. 6 and 9, the front side of the first wedge member 11 on the column 2 side. The end portion 14 is an end portion that is closed over the entire vertical length of the first wedge member 11, and in the middle of the front end portion 14 having the length in the vertical direction in this way, A concave portion 14 A that is recessed to the side opposite to the column 2 side is provided. For this reason, two

convex portions

14B and 14C projecting toward the support column 2 are provided above and below the concave portion 14A. And the part from the

convex part

14B and 14C used as the substantially half of the lower side of the 1st wedge member 11 to the lower end of the 1st wedge member 11 is the width dimension of the front-back direction which is a direction to the support | pillar 2 side. Is a wedge-shaped portion 11C of the first wedge member 11 that gradually decreases downward. Further, a raised portion 15 is provided in the insertion groove 13 so as to protrude from the front end portion 14 of the first wedge member 11 to the side opposite to the column 2 within the range of the wedge-shaped portion 11C. .

As shown in FIG. 6, the front end 16 on the support column 2 side of the second wedge member 12 extends from a position slightly below the upper end of the second wedge member 12 to the lower end of the second wedge member 12. It is formed as a curved protruding portion that protrudes slightly to the side, whereby the majority of the second wedge member 12 on which the curved protruding portion is formed is the front-rear direction that is the direction toward the column 2 This is a wedge-shaped portion 12A of the second wedge member 12 whose size gradually decreases downward.

FIG. 7 is a cross-sectional view taken along line S7-S7 in FIG. As shown in FIG. 7, a protrusion 17 having a length protruding in the thickness direction of the second wedge member 12 is provided at the lower portion of the second wedge member 12. 17 is formed by a pin that is driven and fixed in a hole formed in the lower portion of the second wedge member 12. In other words, the entire protruding length of the protruding portion 17 from the second wedge member 12 is the same as the second groove portion 13B of the insertion groove 13 formed in the first wedge member 11. Therefore, when the second wedge member 12 is moved up and down along the first groove 13A of the insertion groove 13, the protrusion 17 can move up and down in the second groove 13B. Yes.

As shown in FIG. 7, a pair of bent portions 11 D that are bent inward of the insertion groove 13 are formed at both upper ends in the thickness direction of the first wedge member 11. A pair of projecting portions 18 projecting inward of the insertion groove 13 are formed on the lower side of these bent portions 11 D at both upper portions in the thickness direction of the 1 wedge member 11. These protrusions 18 are formed by, for example, extruding the surfaces on both sides in the thickness direction of the first wedge member 11 inward. Since the interval between the pair of bent portions 11D and the interval between the pair of protrusions 18 are slightly larger than the thickness dimension of the second wedge member 12, the interval between these bent portions 11D and the pair of protrusions The second wedge member 12 can be inserted vertically between the portions 18. And when the 2nd wedge member 12 has reached the upper part of the 1st wedge member 11, as shown in Drawing 8 and Drawing 9, by tilting the 2nd wedge member 12 to the handrail member 10 side, The second wedge member 12 can be placed on the handrail member 10, and when the second wedge member 12 tries to move obliquely upward in a direction away from the first wedge member 11, the second wedge member 12 The protrusion 17 is brought into contact with the bent portion 11 D and the protrusion 18 of the first wedge member 11, thereby preventing the second wedge member 12 from dropping from the upper portion of the first wedge member 11.

Therefore, the bent portion 11 D and the protruding portion 18 of the first wedge member 11 are dropped from the upper portion of the first wedge member 11 by the cooperation of the protruding portion 17 of the second wedge member 12. 7 is configured to prevent the first drop-off prevention unit 31 of FIG.

Further, as shown in FIG. 7, an extended portion 19 that extends in the thickness direction of the second wedge member 12 is formed at the upper end of the second wedge member 12. For this reason, before inserting the 1st wedge member 11 in the wedge insertion hole 6 of the wedge receiving member 4 provided in the support | pillar 2 like FIG.5 and FIG.6, the 2nd wedge member 12 is the 1st wedge member 11. FIG. Even when inserted into the first groove portion 13A of the insertion groove 13 from above, the extended portion 19 contacts the pair of bent portions 11D forming the upper surface of the first wedge member 11, whereby the second wedge member 12 is Escape from the lower part of the first wedge member 11 is prevented.

For this reason, the expansion part 19 is provided in the upper part of the 2nd wedge member 12, and the 2nd wedge member 12 falls from the lower part of the 1st wedge member 11 by contact | abutting on the upper surface of the 1st wedge member 11. 7 is configured to prevent the second drop-off prevention unit 32 of FIG.

As described above, the temporary scaffold joint A according to the present embodiment includes the first drop prevention portion 31 for preventing the second wedge member 12 from escaping from the upper portion of the first wedge member 11, and the second wedge member 12. Is provided with a second drop-off prevention portion 32 for preventing the first wedge member 11 from escaping from the lower portion of the first wedge member 11, so that the handrail member 10 is constructed as the temporary scaffold 1 shown in FIG. The first wedge member 11 fixed to the end of the handrail member 10 is carried to the work site or when being carried or transported from the work site where the temporary scaffold 1 is disassembled to another work site. The two wedge members 12 can be made inseparable, and therefore, the management, handling, etc. of the second wedge members 12 can be easily performed.

Next, in order to construct the temporary scaffold 1 shown in FIG. 1, an operation of connecting the support column 2 and the end portion of the handrail member 10 by the temporary scaffold joint A according to the present embodiment will be described.

At the start of this operation, as shown in FIGS. 8 and 9, the second wedge member 12 is laid down and placed on the handrail member 10, and in this state, the first wedge member 12 is placed. The member 11 is inserted into the wedge insertion hole 6 of the wedge receiving member 4 provided in the support 2 from above. 8 and 9 show the state after the insertion. When the first wedge member 11 is inserted into the wedge insertion hole 6 from above, the first wedge member 11 is shown in FIG. The front end 14 on the support 2 side in FIG. 9 is in contact with the outer peripheral surface of the support 2 at the two upper and

lower projections

14B and 14C shown in FIG. 9, and as shown in FIG. The rear end 20 of the wedge member 11 opposite to the support 2 side contacts the inner surface of the wedge insertion hole 6.

That is, in the present embodiment, the width dimension in the front-rear direction of the wedge-shaped portion 11C of FIG. 6 provided on the first wedge member 11 is such that the

convex portions

14B and 14C of the front end portion 14 of the first wedge member 11 are columns. The size is set such that the rear end portion 20 of the first wedge member 11 contacts the inner surface of the wedge insertion hole 6 when contacting the outer peripheral surface of the second wedge member 11.

In the present embodiment, a portion of the wedge insertion hole 6 on the side opposite to the column 2 side is curved and protruded to the side opposite to the column 2 side as shown in FIG. Therefore, the position of the rear end portion 20 of the first wedge member 11 that contacts the inner surface of the wedge insertion hole 6 is, as shown in FIG. 10, the column 2 side of the first wedge member 11. The two rear surfaces 21 opposite to each other, and the two

surfaces

22 and 23 in the thickness direction of the first wedge member 11 forming an angle with the rear surfaces 21 are two

corner portions

24 and 25 intersecting each other. .

Therefore, the first wedge member 11 inserted into the wedge insertion hole 6 is positioned in the front-rear direction, which is the direction toward the support column 2, and the first wedge member 11, which is in the horizontal direction perpendicular to the front-rear direction, is positioned. The first wedge member 11 and the handrail member 10 are fixed in both the front-rear direction and the thickness direction of the first wedge member 11.

The two

corners

24 and 25 may be locations that have been chamfered in advance or may be locations that have not been chamfered.

Thereafter, the first wedge member 11 is driven downward by hitting the upper surface of the first wedge member 11 with a tool such as a hammer, whereby the convex portion 14B of the front end 14 of the first wedge member 11 is driven. , 14C are in pressure contact with the outer peripheral surface of the support column 2, and the two

corners

24, 25 of the first wedge member 11 are in pressure contact with the inner surface of the curved protrusion 6C of the wedge insertion hole 6.

Next, the second wedge member 12 that has been laid down on the handrail member 10 is raised, and the second wedge member 12 is inserted into the first groove portion 13A of the insertion groove 13 formed in the first wedge member 11. insert. When this insertion operation is performed, since the first wedge member 11 is inserted into the wedge insertion hole 6, the second wedge member 12 is also inserted into the wedge insertion hole 6. Thereafter, the second wedge member is inserted. 12 is struck down with an extension 19 provided on the head of the second wedge member 12 with a tool such as a hammer. The state after this driving operation is shown in FIGS. 5 and 6, and when the second wedge member 12 is driven downward with a tool such as a hammer, the second wedge member 12 has a state as shown in FIG. 6. A portion 26A of the rear end portion 26 on the opposite side to the column 2 side is in pressure contact with the inner surface of the wedge insertion hole 6, and the front end portion 16 of the wedge-shaped portion 12A of the second wedge member 12 is a first wedge. The upper end portion 27 of the first groove portion 13A of the insertion groove 13 of the member 11 is in pressure contact with the above-described raised portion 15, and the first wedge member 11 is located above and below the front end portion 14 of the first wedge member 11. At the above-described

convex portions

14B and 14C provided at the locations, the outer peripheral surface of the support column 2 is pressed more strongly.

As described above, the end portion of the handrail member 10 is provided on the support column 2, the wedge receiving member 4 provided on the support column 2, and the first and

second wedge members

11 and 12 provided on the end portion of the handrail member 10. Are connected by the joint A for temporary scaffolding.

According to the present embodiment described above, when the first wedge member 11 is inserted into the wedge insertion hole 6 of the wedge receiving member 4, the front end 14 of the first wedge member 11 abuts on the support column 2, and the first Since the rear end 20 of the 1 wedge member 11 contacts the inner surface of the wedge insertion hole 6, the first wedge member 11 and the handrail member 10 are positioned in the front-rear direction, which is the direction toward the support column 2, and Since the second wedge member 12 is inserted in the first groove portion 13A of the insertion groove 13 of the first wedge member 11 and the second wedge member 12 is driven downward, the first wedge member 11 is inserted in the first groove portion 13A. Can be easily performed.

Further, in the present embodiment, the location where the rear end 20 of the first wedge member 11 contacts the inner surface of the wedge insertion hole 6 is the two rear surfaces 21 of the first wedge member 11 as described with reference to FIG. And the two

corners

24 and 25 intersecting both the

surfaces

22 and 23 in the thickness direction of the first wedge member 11 forming an angle with the rear surface 21, and these

corners

24 and 25 are Since the first wedge member 11 has two locations separated in the thickness direction, by inserting the first wedge member 11 into the wedge insertion hole 6, the first wedge member 11 and the handrail member 10 are moved. The first wedge member 11 can also be positioned in the thickness direction so as to be immovable in the thickness direction. For this reason, the second wedge member 12 is moved to the first groove portion of the insertion groove 13 of the first wedge member 11. The work of inserting into 13A from above and the work of driving down the second wedge member 12 can be performed more easily.

Further, when the location 26A of the rear end portion 26 of the second wedge member 12 comes into pressure contact with the inner surface of the wedge insertion hole 6 by the driving operation of the second wedge member 12, the front side of the wedge-shaped portion 12A of the second wedge member 12 As shown in FIG. 6, the portion where the end portion 16 is in pressure contact with the first wedge member 11 is a portion corresponding to the upper end portion 27 in the first groove portion 13 A of the insertion groove 13 of the first wedge member 11. They are two places on the upper and lower sides with the place corresponding to the part 15. The portion corresponding to the upper end portion 27 is above the portion 26A of the rear end portion 26 of the second wedge member 12 pressed against the inner surface of the wedge insertion hole 6, and the portion corresponding to the raised portion 15 is Since the position is lower than the position 26 A, the front end 16 of the second wedge member 12 is moved by the reaction caused by the position 26 A of the rear end 26 of the second wedge member 12 being pressed against the inner surface of the wedge insertion hole 6. The first wedge member 11 can be brought into pressure contact with stability.

That is, the height position of one of the two upper and lower positions described above is the same or substantially the same height position as the position 26 A of the rear end portion 26 of the second wedge member 12 pressed against the inner surface of the wedge insertion hole 6. In this case, due to the reaction caused by the contact of the portion 26A with the inner surface of the wedge insertion hole 6, one of the two upper and lower portions described above is caused to have the first wedge by a greater pressing force than the other portion. The member 11 is pressed against the member 11, and the other portion is pressed against the first wedge member 11 with a small pressing force, or is not pressed. According to this, the front end 16 of the second wedge member 12 is moved to the first Although it is difficult to press the wedge member 11 in a stable state, the present embodiment can solve such a problem.

Further, in the present embodiment, when the second wedge member 12 is driven, the positions of the front end portion 14 of the first wedge member 11 that are in pressure contact with the support column 2 are two locations at the top and bottom of the

convex portions

14B and 14C. Of these two upper and lower locations, the location of the upper convex portion 14B is above the location 26A of the rear end portion 26 of the second wedge member 12 in pressure contact with the inner surface of the wedge insertion hole 6, and the lower side Since the convex portion 14C is located below the portion 26A, the portion 26A is in pressure contact with the inner surface of the wedge insertion hole 6, and the two upper and lower portions of the front end portion 16 of the second wedge member 12 are first. When the first wedge member 11 is in pressure contact, the front end portion 14 of the first wedge member 11 has two upper and lower protrusions in the same manner as the press contact at the two upper and lower portions of the front end portion 16 of the second wedge member 12 described above. In the

portions

14B and 14C, the pressure column 2 is stably pressed into contact with the column 2, thereby It becomes possible to more reliably couple the sliding member 10.

In addition, according to the present embodiment, even if an external force from the lower side to the upper side acts on the lower end of the second wedge member 12 for some reason, as described above, the front end 16 of the second wedge member 12 is The rear end of the second wedge member 12 is in pressure contact with the first wedge member 11 at two upper and lower portions of the first groove portion 13A of the insertion groove 13 of the first wedge member 11 and the raised portion 15. The portion 26 is in pressure contact with the inner surface of the wedge insertion hole 6 at the location 26A, and the wedge-shaped portion 12A of the second wedge member 12 has a curved protruding portion in which the front end 16 protrudes curved toward the support column 2 side. Since the width dimension in the front-rear direction of the wedge-shaped part 12A is a dimension that changes in correspondence with the curved projecting part, the second wedge member is used for the external force that acts straight from the lower side to the upper side. 12 is above the first wedge member 11 and the wedge insertion hole 6 Thus, the end of the handrail member 10 is secured to the support column 2 by the temporary scaffold joint A composed of the wedge receiving member 4 and the first and

second wedge members

11 and 12. Can be linked to.

FIG. 11 shows another embodiment. In the embodiment of FIG. 11, the rear end 20 of the first wedge member 11 that contacts the inner surface of the wedge insertion hole 6 is used as two rear surfaces 21 on the opposite side of the first wedge member 11 from the support 2 side. Yes. In order to bring the rear surface 21 and the inner surface of the wedge insertion hole 6 of the wedge receiving member 4 into surface contact with each other, a portion of the wedge insertion hole 6 opposite to the column 2 side is parallel to the rear surface 21. The two straight portions 6D are provided, and the rear surface 21 is in surface contact with the inner surfaces of these straight portions 6D.

According to this embodiment, since the rear end 20 of the first wedge member 11 is in surface contact with the inner surface of the wedge insertion hole 6, the first wedge member 11 and the handrail member 10 are in the direction toward the support column. Positioning can be performed more reliably in the front-rear direction and the front-rear direction can be fixed.

The two straight portions 6D shown in FIG. 11 are provided with a step between the portion 6E on the inner surface of the wedge insertion hole 6 where the portion 26A of the rear end portion 26 of the second wedge member 12 is pressed. However, a step is not provided between the two straight portions 6D and the portion 6E, and the straight portions 6D and the portions 6E may be continuous.

The present invention is for connecting a column of a temporary scaffold constructed by various operations such as a construction work site, a civil engineering work site, and a demolition work site, and various temporary scaffolding members such as a handrail member and a carrying frame. Can be used.

Claims

A temporary scaffold joint for connecting a temporary scaffold member to a column that is erected to construct a temporary scaffold,
A wedge receiving member provided in the column and having a wedge insertion hole formed in a vertical direction with an end on the column side reaching the column, and a direction to the column side fixed to the temporary scaffold member A first wedge member having a portion in which the width dimension in the front-rear direction is reduced downward, and the temporary scaffold member is disposed so as to be movable in the vertical direction with respect to the first wedge member. A second wedge member having a portion whose width dimension decreases downward, and the first wedge member and the second wedge member are inserted into the wedge insertion hole of the wedge receiving member from above. Thus, the front end of the first wedge member on the column side is in pressure contact with the column, and the rear end of the second wedge member opposite to the column side is in pressure contact with the inner surface of the wedge insertion hole. And the front end of the second wedge member on the support column side In temporary scaffold joint the temporary scaffold member in pressure contact with the first wedge member is connected to said post,
When the first wedge member is inserted into the wedge insertion hole, the front end portion of the first wedge member abuts on the support column, and the rear side of the first wedge member on the opposite side to the support column side. A temporary scaffold joint, wherein a side end portion abuts against an inner surface of the wedge insertion hole.
2. The joint for a temporary scaffold according to claim 1, wherein when the first wedge member is inserted into the wedge insertion hole, the rear side end portion of the first wedge member that contacts the inner surface of the wedge insertion hole is formed. The number of the joints for a temporary scaffolding is two, which are separated in the thickness direction of the first wedge member.
3. The joint for a temporary scaffold according to claim 2, wherein the two locations are a rear surface of the first wedge member opposite to the column side and a thickness of the first wedge member that forms an angle with the rear surface. A joint for a temporary scaffold, characterized in that there are two corners intersecting both surfaces in the direction.
The joint for temporary scaffolding of Claim 3 WHEREIN: The inner surface of the said wedge insertion hole which the said 2 corner | angular parts contact forms the part on the opposite side to the said support | pillar side among the said wedge insertion holes. A joint for a temporary scaffold, which is an inner surface of a curved projecting portion that is a portion and curves toward the opposite side of the support column.
3. The temporary scaffold joint according to claim 2, wherein the two locations are two rear surfaces of the first wedge member opposite to the support column side.
6. The joint for a temporary scaffold according to claim 5, wherein an inner surface of the wedge insertion hole with which the rear surface abuts is parallel to the rear surface of the wedge insertion hole and forms an opposite side to the support column side. A joint for a temporary scaffold characterized by being an inner surface of a portion that has been made.
The joint for a temporary scaffold according to claim 1, wherein the first wedge member is formed with an insertion groove into which the second wedge member can be inserted in the vertical direction, and is inserted into the insertion groove from above. The second wedge member having the rear end pressed against the inner surface of the wedge insertion hole is pressed against the first wedge member at two upper and lower positions of the front end, and the upper of the two upper and lower positions. Is located above the rear end portion of the second wedge member pressed against the inner surface of the wedge insertion hole, and the lower portion is a second wedge member pressed against the inner surface of the wedge insertion hole. The joint for temporary scaffolds characterized by being below the part of the rear side end part.
2. The temporary scaffold joint according to claim 1, wherein the front end portion of the first wedge member that is in pressure contact with the support column has two upper and lower portions, and the upper portion of the two upper and lower portions is inserted into the wedge. A position above the rear end portion of the second wedge member pressed against the inner surface of the hole is above, and a position below the second wedge member is a position of the rear end portion of the second wedge member pressed against the inner surface of the wedge insertion hole. A joint for a temporary scaffold, wherein the joint is located below the part.
2. The temporary scaffold joint according to claim 1, wherein the first wedge member is formed with an insertion groove into which the second wedge member can be inserted in a vertical direction, and the insertion groove is 2 is a step-like groove having a first groove portion having a width corresponding to the thickness of the wedge member and a second groove having a width larger than the first groove. The lower portion of the wedge member is provided with a protruding portion that protrudes in the thickness direction of the second wedge member and whose protruding length is movable up and down in the second groove portion. The first wedge member is provided with a first drop prevention portion on the upper portion of the first wedge member for preventing the second wedge member from dropping from the upper portion of the first wedge member due to contact of the protruding portion. The upper portion of the second wedge member is in contact with the upper surface of the first wedge member. The second temporary scaffold joint wedge member, characterized in that the second disengagement prevention part for preventing the falling off from the lower portion of the first wedge member.