JP4890525B2 - Temporary scaffolding connection structure - Google Patents

Description

  The present invention relates to an improvement of a connection structure for a temporary scaffold for removably connecting a main body member to a wedge receiver of a support by inserting a wedge member into an insertion portion of the main body member to which a scaffold member is fixed. .

  Generally, when performing construction of buildings, etc., temporary scaffolds are installed on the outer periphery, and a plurality of support columns are arranged at predetermined intervals, and scaffolding plates are installed between the support columns. A one-level scaffold is formed, and a plurality of levels of scaffolds are formed by sequentially adding support pillars upward and erection of a scaffold plate. In such a temporary scaffolding, as a safety measure when adding the scaffolding upward, the scaffolding material such as a brace material, horizontal material or vertical material is used as a handrail before the scaffolding plate is installed. Configured to place.

  As described above, when the scaffold is disposed, a temporary scaffold connection structure for removably connecting the scaffold to the wedge receiver of the support is used. Therefore, the present applicant has previously proposed a connection structure 100 for a temporary scaffold shown in FIG. 4 (see, for example, Patent Document 1). The temporary scaffold connection structure 100 includes a main body member 120 made of two plate-like members 121 and 122 to which the scaffold material P is fixed, and a main body member that can be inserted from above into the hole 116 of the wedge receiver 115 of the column 111. A fixed wedge member 130 formed on 120 and three guide portions 123, 124, 132 formed between two plate-like members 121, 122 constituting the main body member 120 are provided so as to be able to advance and retract in the lateral direction. And a movable wedge member 140 which is advanced to the lower portion of the wedge receiver 115 when the safety is fixed and retracted from the lower portion of the wedge receiver 115 when the fixing is released.

  In FIG. 4, reference numeral 131 denotes an insertion portion of the fixed wedge portion 130 that can be inserted into the hole portion 116 of the wedge receiver 115, 141 denotes a rod-like portion of the movable wedge member 140 formed in a wedge shape, and 142 denotes the movable wedge member 140. A driving portion 143 for driving in represents a retaining portion for preventing the movable wedge member from falling off.

  In the temporary scaffold connection structure 100, first, the insertion portion 131 of the fixed wedge member 130 is inserted into the hole portion 116 of the wedge receiver 115 from above. Next, the movable wedge member 140 is advanced along the guide portions 123, 124, and 132, and its front portion is engaged with the lower portion of the wedge receiver 115. As a result, the wedge receiver 115 can be gripped and fixed from above and below by the fixed wedge member 130 and the movable wedge member 140, so that the scaffold can be securely and reliably connected to the support column. Further, if the front portion of the movable wedge member 140 is retracted from the lower portion of the wedge receiver 115, the fixing can be easily released.

In recent years, as in the conventional connection structure for temporary scaffolds, in addition to being able to easily and reliably connect the scaffold material to the support, it is required to further improve the stability after the connection.
JP 2008-2116 A

  The present invention has been made in view of the above points, and provides a connection structure for a temporary scaffold that can easily and reliably connect a scaffold material to a support and can further improve the stability after connection. To do.

That is, the invention of claim 1 is characterized in that the wedge member (50) is inserted into the insertion portion (25) of the main body member (20) to which the scaffolding material (P) is fixed, thereby attaching the main body member to the wedge of the column (11) . A structure for removably connecting to the receiver (15) , wherein the upper protrusion protrudes rearward from the wedge receiver when inserted into the wedge receiver on the front side of the main body member. An insertion part (30) having a part (31) and a lower protrusion (32) , an inclined holding part (40) formed by inclining downward in the insertion part of the main body member, and the insertion A linear side portion (51) that can come into contact with the lower and upper protrusions of the portion, and an inclined side portion (52) that can make contact along the inclination of the inclined holding portion of the main body member. is inserted into the receiving the wedge and the inclined holding portion of the body member A retractable between a plug portion, the contact and inclined the inclined sides of the inclined holder the straight sides at the time of advancing to the lower projection and the upper projection of the insertion portion It has a wedge member (50) which is fixed by abutting along and is released when retreating, and relates to a connection structure for a temporary scaffold.

The invention of claim 2, wherein the wedge member is, according to the temporary scaffolding connection structure according to claim 1 having a retaining portion for fastening to the engagement portion of the body member during retraction.

The invention according to claim 3 relates to the connection structure for a temporary scaffold according to claim 1 or 2 , wherein the wedge member has an engaging portion that engages with an upper end portion of the inclined holding portion when retreating.

According to the connection structure for a temporary scaffold according to the invention of claim 1, the main body is formed by inserting the wedge member (50) into the insertion portion (25) of the main body member (20) to which the field material (P) is fixed. A structure for detachably connecting a member to a wedge receiver (15) of a support column (11) , wherein the member is formed on the front side of the main body member so as to be insertable into the wedge receiver. And an insertion portion (30) having an upper protrusion (31) and a lower protrusion (32) protruding rearward, and an inclination holding portion formed by inclining downward at the insertion portion of the main body member. (40) , a linear side portion (51) capable of contacting the lower projection and the upper projection of the insertion portion, and an inclined side capable of contacting along the inclination of the inclined holding portion of the main body member part (52) and has a rather the inclined holding portion of said body member A retractable between a spigot which is inserted into the receiving fine, contact and said inclined sides said straight side at the time of advancing to the lower projection and the upper projection of the insertion portion Since it has a wedge member (50) that is fixed by abutting along the inclination of the inclined holding part and is released when retreating, the scaffold member can be easily and reliably connected to the column. The rattling after the connection with the support can be suppressed, the stability is improved, and the temporary scaffold connection structure is not detached from the wedge receiver, and the safety is excellent.

According to the invention of claim 2, in the invention of claim 1 , since the wedge member has a retaining portion that is engaged with the engaging portion of the main body member when retreating, it is possible to prevent the wedge member from falling off. The safety inside can be improved.

According to a third aspect of the invention, in the first or second aspect , the wedge member has an engaging portion that engages with an upper end portion of the inclined holding portion when retreating, and therefore the wedge member is held at the retreat position. Therefore, workability and safety can be further improved.

The present invention will be described in detail with reference to the accompanying drawings.
1 is a perspective view of a connection structure for a temporary scaffold according to an embodiment of the present invention, FIG. 2 is a schematic side view showing a state where a wedge member of the connection structure for a temporary scaffold is released, and FIG. 3 is a temporary scaffold. It is a schematic side view showing the state where the wedge member of the connection structure for operation was fixed.

  The temporary scaffold connection structure 10 according to one embodiment of the present invention shown in FIGS. 1 to 3 includes a main body member 20 by inserting a wedge member 50 into an insertion portion 25 of the main body member 20 to which the scaffold material P is fixed. Is removably connected to the wedge receiver 15 of the column 11. Here, the scaffold material P is a bracing material, a horizontal material, a vertical material or the like for a temporary scaffold.

  The main body member 20 includes two plate-like members 21 and 22, and includes an insertion portion 30 and an inclined holding portion 40, and the scaffold material P is fixed on the rear side. In the embodiment, the fixing portion P1 of the scaffold member P is sandwiched between the plate-like members 21 and 22, and is fixed by a fixing pin P2 penetrating the plate-like members 21 and 22. Further, in the main body portion 20 of the embodiment, the insertion portion 25 is configured by the two plate-like members 21 and 22, the insertion portion 30, and the inclined holding portion 40. Reference numerals 23 and 24 in the figure are attachment portions of the insertion portion 30 formed to protrude rearward from the upper portions of the plate-like members 21 and 22, and 26 and 27 are attachment portions 23 and 24 of the plate-like members 21 and 22. It is the engaging part formed in the downward side of.

  The insertion portion 30 is formed on the front side of the main body member 20 so as to be able to be inserted into the wedge receiver 15, and has an upper protrusion 31 and a lower protrusion 32 that protrude rearward from the wedge receiver 15 when inserted. In the embodiment, the upper part is clamped and welded to the attachment parts 23 and 24 of the two plate-like members 21 and 22.

  The inclined holding part 40 is a part formed on the insertion part 25 of the main body member 20 with the lower part inclined forward. As the inclined holding portion 40, any member may be used as long as the lower surface inclined surface 45 is formed in front of the main body member 20. In the embodiment, as shown in the figure, the plate member 21 and 22 are sandwiched and welded to each other.

  The wedge member 50 can advance and retreat between the inclined holding portion 25 of the main body member 20 and the insertion portion 30 inserted into the wedge receiver 15, and the lower side protrusion of the inclined holding portion 40 and the insertion portion 30 during advancement. While being fixed by the part 32 and the upper side protrusion 31, it is comprised so that the said fixation may be cancelled | released at the time of reverse. The wedge member 50 according to the embodiment is arranged along the inclination of the inclined side holding portion 40 of the main body member 20 and the linear side portion 51 that contacts the lower protrusion 32 and the upper protrusion 31 of the insertion portion 30 at the time of fixing. It has an inclined side portion 52 that abuts.

  In addition, the wedge member 50 has a retaining portion 53 that is engaged with the engaging portions 26 and 27 of the main body member 20 when retracted. The retaining portion 53 is formed of a pin-like member that penetrates and is fixed to the vicinity of the tip of the wedge member 50, and is prevented from falling off from the main body member 20 when the wedge member 50 is retracted. In the embodiment, since the engaging portions 26 and 27 of the main body member 20 are formed as concave portions having a width slightly larger than the diameter of the retaining portion 53 made of a pin-shaped member, the retaining portion 53 and the engaging portion The front end portion of the wedge member 50 does not greatly sway from side to side during the engagement with 26 and 27, and is held at a predetermined position.

  Furthermore, the wedge member 50 has an engaging portion 54 that engages with the upper end portion of the inclined holding portion 40 when retreating. The engaging portion 54 of the embodiment is formed in the vicinity of the lower end portion of the inclined side portion 52 above the retaining portion 53, and when the wedge member 50 is retracted, the retaining portion 53 becomes the engaging portion 26 of the main body member 20, 27 is configured to be engageable with the upper end portion of the inclined holding portion 40 before being engaged with 27. As a result, the wedge member 50 can be held in the retracted position when the wedge member 50 is released.

  Next, a method of connecting the scaffold material P to the support column 11 using the temporary scaffold connection structure 10 will be described with reference to FIGS. When the scaffold material P is connected to the column 11, first, the insertion portion 30 of the temporary scaffold connection structure 10 is inserted from above the wedge receiver 15 as shown in FIG. 2. At that time, the tip portion including the lower protrusion 32 of the insertion portion 30 protrudes from below the wedge receiver 15, and the rear end portion including the upper protrusion 31 protrudes from above the wedge receiver 15. .

  At the time of this insertion, the wedge member 50 of the temporary scaffold connection structure 10 is held in the retracted position with the engaging portion 54 engaged with the upper end portion of the inclined holding portion 40 as shown in FIG. Therefore, it is possible to prevent the wedge member 50 from moving forward unintentionally. In particular, when the engaging portion 54 is engaged with the upper end portion of the inclined holding portion 40, the retaining portion 53 is simultaneously engaged with the engaging portions 26 and 27 of the main body member 20. Thus, it is possible to prevent the wobbling of 50, and it is possible to fix and hold at a predetermined retracted position. Therefore, the wedge member 50 is not obstructed when the insertion portion 30 is inserted into the wedge receiver 15, and the operation is facilitated and can be performed safely.

  Subsequently, the engagement between the engaging portion 54 of the wedge member 50 and the inclined holding portion 40 is released, and the wedge member 50 is moved forward in the insertion portion 25 of the main body member 20 as shown in FIG. Then, it is moved downward). At this time, the wedge member 50 is in contact with the lower side protrusion 32 and the upper side protrusion 31 of the insertion portion 30 along the inclination of the linear holding portion 40 and the inclination holding portion 40 of the main body member 20. Since the portion 52 is provided, the wedge member 50 can be easily and reliably fixed and held by the upper and lower protrusions 31 and 32 and the inclined holding portion 40 only by advancing the wedge member 50 to a predetermined position. it can. When the wedge member 50 is advanced and fixed, it can be fixed more firmly by driving the rear end side of the wedge member 50 with a hammer or the like.

  Thus, by inserting the insertion portion 30 into the wedge receiver 15 and advancing and fixing the wedge member 50, the connection of the scaffold material P to the support column 11 by the temporary scaffold connection structure 10 is completed. In this connected state, since the insertion portion 30 and the wedge member 50 grip the side portion of the wedge receiver 15 from both the inside and the outside, it is possible to suppress the rattling after the connection with the support column 11 and stability. Will improve. Moreover, since the upper protrusion 31 and the lower protrusion 32 of the plug-in portion 30 protrude rearward from the wedge receiver 15 and are in contact with the linear side portion 51 of the wedge member 50 during connection, the temporary scaffold The connecting structure 10 does not come off the wedge receiver 15 and is excellent in safety. Therefore, by using the temporary scaffold connection structure 10, the scaffold material P can be connected to the column very easily and reliably, and the stability at the time of connection is improved and the safety is excellent. .

  When releasing the connected state, first, the wedge member 50 in the fixed state is moved in the backward direction (upward in the illustrated example), and the linear side portion 51 of the wedge member 50 and the insertion portion 30 are moved. The upper and lower protrusions 31, 32, the inclined side portion 52, and the inclined holding portion 40 are separated from each other, and the fixing is released. In that case, it can release more easily by driving the front end side of the wedge member 50 using a hammer.

  The wedge member 50 retracted in this way is prevented from falling off by the retaining portion 53 being engaged with the engaging portions 26 and 27 of the main body member 20, so that part falling during operation may occur. There is no safety. Furthermore, the wedge member 50 may become an obstacle if the engaging portion 54 of the wedge member 50 is engaged with the upper end portion of the inclined holding portion 40 in the same manner as when the insertion portion 30 is inserted into the wedge receiver 15. Workability is improved and safety is improved. And the removal from the support | pillar 11 of the said temporary scaffold connection structure 10 can be easily performed only by removing the insertion part 30 from the wedge receptacle 15 from the state which retracted the wedge member 50. FIG.

  In addition, the connection structure for temporary scaffolds of this invention is not limited only to the above-mentioned Example, A part of structure can be changed suitably and implemented in the range which does not deviate from the meaning of invention. For example, in the embodiment, the main body member is composed of two plate-shaped members, and the insertion portion is constituted by each plate-shaped member, the insertion portion, and the inclined holding portion. A through hole in which 50 can be inserted can be formed to constitute the insertion portion. At that time, the inclined holding portion can be formed by inclining the lower portion of the inner wall portion of the through hole constituting the insertion portion forward, and the inclined holding portion made of the same plate member as in the embodiment is formed in the through hole. It can also be formed.

  In the embodiment, the inclined holding portion 40 made of a plate member is sandwiched and welded between the plate-like members 21 and 22, but each plate-like member 21 and 22 is provided with an inclined through hole. Then, the inclined holding portion 40 made of a plate member may be fitted into the through hole and welded. If comprised in this way, it will become possible to attach the inclination holding | maintenance part 40 very easily.

It is a perspective view of the connection structure for temporary scaffolds which concerns on one Example of this invention. It is a schematic side view showing the state where the wedge member of the connection structure for temporary scaffolds was released. It is a schematic side view showing the state where the wedge member of the temporary scaffold connection structure was fixed. It is a schematic side view of the conventional connection structure for temporary scaffolds.

DESCRIPTION OF SYMBOLS 10 Connection structure for temporary scaffolds 11 Support | pillar 15 Wedge receptacle 20 Main body member 21,22 Plate-shaped member 30 Insertion part 31 Upper protrusion 32 Lower protrusion 40 Inclination holding part 50 Wedge member P Scaffold material

Claims (3)

By inserting the wedge member (50) into the insertion part (25) of the main body member (20) to which the scaffolding material (P) is fixed, the main body member can be removed from the wedge receiver (15) of the column (11). A structure for connecting to
An insertion portion (30) having an upper protrusion (31) and a lower protrusion (32) which are formed on the front side of the main body member so as to be able to be inserted into the wedge receiver and protrude rearward from the wedge receiver when inserted. When,
An inclined holding part (40) formed with the lower part inclined forward in the insertion part of the main body member;
A linear side portion (51) capable of contacting the lower and upper protrusions of the insertion portion, and an inclined side portion (52) capable of contacting along the inclination of the inclined holding portion of the main body member; And can be moved back and forth between the inclined holding portion of the main body member and the insertion portion inserted into the wedge receiver, and the linear side portion can move downward and upward of the insertion portion during advancement. A wedge member (50) which is fixed by being in contact with a protrusion and the inclined side portion is in contact with the inclination of the inclined holding portion and is released when retreating.
A connection structure for a temporary scaffold characterized by comprising: The connection structure for a temporary scaffold according to claim 1 , wherein the wedge member has a retaining portion that engages with the engaging portion of the main body member when retreating. The wedge member is temporary scaffolding connection structure according to claim 1 or 2 having an engagement portion for the upper end portion and engagement of the inclined holder during retraction.

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