JP5926712B2 - Temporary scaffolding connection structure - Google Patents

Description

  The present invention relates to an improvement in a connection structure for a temporary scaffold for removably connecting a main body member to which a scaffold material is fixed to a wedge receiver of a support column.

  In general, a temporary scaffold is installed on the outer periphery of a building when the building is constructed. In this temporary scaffold, a plurality of struts are arranged at predetermined intervals, and a scaffolding plate is installed between the struts to form a multi-level scaffold. In the construction work of such a temporary scaffold, as a safety measure for the work of adding the scaffold upward, the scaffolding material such as diagonal, horizontal, or vertical is used as a handrail before the scaffold plate is constructed. Arranged.

  When arranging the scaffolding material, for example, a temporary scaffolding connection structure 100 for detachably connecting the scaffolding material P illustrated in FIG. 6 to the wedge receiver 105 of the support column 101 is used (for example, Patent Documents). 1). The connecting structure 100 includes a main body member 110 to which the scaffold member P is fixed and an insertion portion 115, an insertion portion 120 formed so as to be able to be inserted into the wedge receiver 105 on the front side of the main body member 110, and a lower portion of the insertion portion 115. Along the inclination of the inclination holding part 130 formed so as to be inclined to the front side, the linear side part 141 that can contact the lower protrusion 121 and the upper protrusion 122 of the insertion part 120, and the inclination holding part 130. A sloping side portion 142 that can be contacted, and can be moved back and forth between the slant holding portion 130 and the insertion portion 120 inserted into the wedge receiver 115, and the straight side portion 141 is inserted into the insertion portion at the time of forward movement. The wedge member 140 is fixed by being in contact with the lower protrusion 121 and the upper protrusion 122 of the 120 and the inclined side part 142 is in contact with the inclination of the inclination holding part 130 and is released when retreating. Equipped with a. In FIG. 6, reference numeral 143 denotes a retaining portion provided on the wedge member 140, and 144 denotes an engaging portion that engages with the upper end portion of the inclined holding portion 130 when the wedge member 140 is retracted.

  In the connection structure 100, the connection structure 100 can be easily fixed and released by the advancement and retraction of the wedge member 140. When the connection structure 100 is connected to the column 11, the wedge portion 140 and the wedge member 140 receive the wedge. While holding the 105 and suppressing rattling, it is possible to prevent the falling from the wedge receiver 105, which is excellent in stability and safety.

  However, this type of temporary scaffold connection structure is required to further improve the simplicity and reliability of the connection of the scaffolding material to the column and the stability during connection.

Japanese Patent No. 4890525

  The present invention has been made in view of the above-described points, and allows a scaffold material to be more easily and reliably connected to a support, and can further improve the stability at the time of connection. Is to provide.

  That is, the invention of claim 1 is a structure for detachably connecting a scaffolding material to a wedge receiver of a support column, wherein the scaffolding material is fixed and formed so that it can be inserted into the wedge receiver. A pair of plate-like members each having an insertion portion, a rotation shaft portion provided on the insertion portion side upper portion of the plate-like member, and a first locking provided on the scaffold material side upper portion of the plate-like member And a main body member having a second locking portion provided below the first locking portion and closer to the rotation shaft portion than the first locking portion, and a rotation shaft portion of the main body member. A rotation holding member that is pivotally supported and has a holding portion that holds the wedge receiver together with the insertion portion of the main body member when fixed, and an engagement portion provided on the rear side of the holding portion; The main body member can be moved back and forth between the first and second locking portions and the rotation holding member. Inserted and wedged between the rear side portion of the rotation holding member and the first locking portion and the second locking portion when moving forward to fix the rotation holding member so as not to rotate; A temporary scaffolding connection structure comprising a wedge member having a hook-like portion that engages with the engaging portion of the rotation holding member when retreating and rotates the rotation holding member to release the fixing. Related to the body.

  According to a second aspect of the present invention, there is provided a tip protrusion that protrudes toward the insertion hole side of the wedge receiver when the wedge receiver is held at the tip of the holding portion of the rotation holding member. The present invention relates to a temporary scaffold connection structure.

  According to a third aspect of the present invention, the wedge member contacts the linear side portion that contacts the rear side portion of the rotation holding member, the first locking portion, and the second locking portion when moving forward. The connection structure for temporary scaffolds according to claim 1 or 2, comprising inclined side portions.

  According to a fourth aspect of the present invention, in the connecting structure for a temporary scaffold according to any one of the first to third aspects, the wedge member has a locking recess that can be locked to the first locking portion when retreating. Related.

  The invention according to claim 5 relates to the connection structure for a temporary scaffold according to any one of claims 1 to 4, wherein the insertion portions of the pair of plate-like members are bent and welded to each other. .

  A connection structure for a temporary scaffold according to the invention of claim 1 is a structure for detachably connecting a scaffold material to a wedge receiver of a support column, and the scaffold material is fixed and inserted into the wedge receiver. A pair of plate-like members having an insertion portion formed in a possible manner, a rotating shaft portion provided at the upper portion of the plate-like member on the insertion portion side, and an upper portion of the plate-like member on the scaffold material side A main body member having a first locking portion formed, and a second locking portion provided below the first locking portion and closer to the rotating shaft portion than the first locking portion; A holding portion that is pivotally supported by the rotation shaft portion and holds the wedge receiver together with the insertion portion of the main body member when fixed, and an engagement portion provided on the rear side of the holding portion. A rotation holding member, the first locking portion and the second locking portion of the main body member, and the rotation holding member. Between the rear side portion of the rotation holding member, the first locking portion, and the second locking portion, and the rotation holding member is rotated during advancement. And a wedge member that has a hook-shaped portion that is fixed to be impossible and engages with the engaging portion of the rotation holding member when retreating to rotate and release the rotation holding member. While being able to connect a scaffold material to a support | pillar reliably, the outstanding stability at the time of connection can be acquired.

  According to a second aspect of the present invention, in the first aspect, a tip protrusion is formed that protrudes toward the insertion hole side of the wedge receiver when the wedge receiver is held at the tip of the holding portion of the rotation holding member. In addition, the connection structure for the temporary scaffold is not detached from the wedge receiver when fixed, and safety can be improved.

  According to a third aspect of the present invention, in the first or second aspect, the wedge member includes a linear side portion that abuts against a rear side portion of the rotation holding member at the time of forward movement, the first locking portion, and the first locking portion. 2 Since it has an inclined side part that contacts the locking part, the rotation holding member can be fixed and held more easily and reliably.

  According to a fourth aspect of the present invention, in the first to third aspects, since the wedge member has an engaging recess that can be engaged with the first locking portion when retracted, the wedge member can be held in the retracted position. Thus, workability and safety can be further improved.

  According to a fifth aspect of the present invention, in the first to fourth aspects, since the respective insertion portions of the pair of plate members are bent and welded to each other, it is possible to prevent the expansion of the plate members. In addition, the main body member can be formed at a low cost.

It is a perspective view of the connection structure for temporary scaffolds which concerns on one Example of this invention. It is a schematic front view at the time of fixation of the connection structure of FIG. It is a schematic front view at the time of fixation cancellation | release of the connection structure of FIG. It is a schematic front view of the state where the wedge member of the connection structure of FIG. 1 is held in the retracted position. It is a top view of a main body member. It is a schematic front view at the time of fixation of the conventional connection structure.

  The temporary scaffolding connection structure 10 according to one embodiment of the present invention shown in FIGS. 1 to 4 is for detachably connecting the scaffolding material P to the wedge receiver 15 of the support column 11. A member 20, a rotation holding member 30, and a wedge member 40 are provided. Here, the scaffold material P is a bracing material, a horizontal material, a vertical material or the like for a temporary scaffold. Reference numeral 16 in the drawing denotes an insertion hole for the wedge receiver 15.

  As shown in FIGS. 1 to 4, the main body member 20 is a member to which the scaffold material P is fixed, and includes a pair of plate-like members 21 and 22, a rotation shaft portion 25, and a first locking portion 26. And a second locking portion 27. The pair of plate-like members 21 and 22 are arranged to face each other with a predetermined gap S, and have insertion portions 23 and 24 formed on one side so as to be able to be inserted into the wedge receiver 15 of the support column 11. The scaffold material P is fixed in the gap S by welding or the like. The rotation shaft portion 25 is a pin-like member provided in the gap S at the upper part on the side of the insertion portions 23 and 24 of the plate-like members 21 and 22. The first locking part 26 is a pin-shaped member provided in the gap S on the scaffolding material P side upper part of the plate-like members 21 and 22, and the second locking part 27 is below the first locking part 26 and on the first side. 1 is a pin-like member provided in the gap S on the rotating shaft 25 side from the locking portion 26. The rotating shaft portion 25, the first locking portion 26, and the second locking portion 27 also function as a fixing member that fixes the pair of plate-like members 21 and 22 to each other.

  As shown in FIG. 5, in the pair of plate-like members 21, 22, the insertion portions 23, 24 are bent inward from each other and are welded to each other with their end sides in contact with each other. Thus, by welding each insertion part 23 and 24, the insertion part 23 and 24 of the plate-shaped members 21 and 22 is reinforced, and the expansion of the gap | interval S of each plate-shaped member 21 and 22 is prevented. can do. In addition, since it is expensive to integrally form the plate members 21 and 22, the main body member 20 can be formed at a low cost by integrating the plate members 21 and 22 by welding. In addition, the code | symbol W is the welding part of each insertion part 23 and 24. FIG.

  As shown in FIGS. 1 to 4, the rotation holding member 30 is pivotally supported by the rotation shaft portion 25 of the main body member 20, and includes a holding portion 31 and an engagement portion 35. The holding portion 31 is formed of a rod-like portion that is longer than the wedge receiver 15 of the support column 11, and holds and holds the side portion 15 </ b> A of the wedge receiver 15 of the support column 11 together with the insertion portions 23 and 24 of the main body member 20 when fixed. A tip protrusion 32 that protrudes toward the insertion hole 16 of the wedge receiver 15 when the wedge receiver 15 is held is formed at the tip of the holding portion 31. Therefore, the side portions 15A of the wedge receiver 15 can be surrounded and held by the insertion portions 23 and 24 of the main body member 20 and the rotation holding member 30, and the temporary scaffold connection structure 10 is wedge-received when fixed. Therefore, safety can be improved. On the other hand, the engaging portion 35 is a recess provided on the rear side of the holding portion 31 so as to open downward. In the drawing, reference numeral 33 denotes a rear side portion of the rotation holding member 30.

  As shown in FIGS. 1 to 4, the wedge member 40 includes a wedge main body 41 and a hook-like portion 45, and a gap S between the pair of plate-like members 21 and 22 of the main body member 20, particularly the first locking. The rotation holding member 30 is inserted or removably inserted between the portion 26 and the second locking portion 27 and the rotation holding member 30 (insertion portion S1), and the rotation holding member 30 is fixed or released.

  The wedge body 41 has a wedge shape, and is wedged between the rear side portion 33 of the rotation holding member 30 and the first locking portion 26 and the second locking portion 27 when moving forward. It is fixed so that it cannot rotate, and is released when retreating. At the time of fixing, the upper end side of the wedge main body 41 is driven with a hammer or the like, so that it can be fixed more firmly. In the embodiment, the linear side portion 42 that contacts the rear side portion 33 of the rotation holding member 30 and the inclined side portion 43 that contacts the first locking portion 36 and the second locking portion 37 at the time of forward movement, Therefore, the rotation holding member 30 can be smoothly inserted between the rear side portion 33 and the first locking portion 26 and the second locking portion 27, and the rotation holding member 30 can be fixed and held more easily and reliably. In addition, an engagement recess 44 that can be engaged with the first engagement portion 26 when retreating is formed in the rear side portion of the wedge body 41, that is, the inclined side portion 43. As a result, the wedge member 40 can be held in the retracted position, and the wedge member 40 does not get in the way when the fixation is released, so that workability is improved and safety is also improved.

  The hook-like portion 45 is formed on the rotation fixing member 30 side at the tip of the wedge body 41, engages with the engagement portion 35 of the rotation holding member 30 when retracted, and rotates and holds about the rotation shaft portion 25 as an axis. The member 30 is rotated to release the fixing. Further, when releasing the rotation holding member 30, the engagement state between the hook-like portion 45 and the engagement portion 35 is always maintained when the wedge member 40 is retracted. Therefore, the work can be safely performed without rotating to the fixed side. Reference numeral 46 in the drawing denotes a retaining portion for preventing the wedge member 40 formed on the opposite side of the hook-shaped portion 45 at the tip of the wedge body 41 from falling off when retracting.

  Next, a usage example of the temporary scaffold connection structure 10 will be described. First, when connecting the connecting structure 10, as shown in FIG. 2, after inserting the insertion portions 23 and 24 of the main body member 20 into the wedge receiver 15 of the support column 11, the wedge member 40 is advanced and rotated. By fixing the holding portion 30 between the rear side portion 33 and the first locking portion 26 and the second locking portion 27, the fixing portion 31 of the rotation holding member 30 is fixed to the wedge receiver 15 side. The side portions 15A of the wedge receiver 15 of the support column 11 are held together with the insertion portions 23 and 24 of the main body member 20. At this time, the wedge member 40 can be firmly wedged by driving the upper end side of the wedge member 40 with a hammer or the like as necessary, and the inadvertent dropping of the connection structure 10 can be suppressed. it can.

  Subsequently, when releasing the connection of the connection structure 10, as shown in FIG. 3, the wedge is interposed between the rear side portion 33 of the rotation holding member 30 and the first locking portion 26 and the second locking portion 27. The worn wedge member 40 is retracted. At this time, the hook-shaped portion 45 formed on the rotation holding member 30 side at the tip of the wedge body 41 abuts on the engagement portion 35 provided on the rear side of the holding portion 31 of the rotation holding member 30, and the wedge member 40. Is further retracted, the engaging portion 35 is pulled upward. As a result, the rotation holding member 30 is rotated in the direction away from the wedge receiver 15 with the rotation shaft portion 25 as the axis center, and the fixed state is released.

  Further, as shown in FIG. 4, when the wedge member 40 is retracted, the engagement recess 44 of the wedge member 40 is engaged with the first locking portion 26 of the main body member 20, so that the wedge member 40 is in the retracted position. It becomes possible to hold. Thus, since the wedge member 40 can be held at a predetermined position when the fixation is released, the wedge member 40 does not get in the way during work. Further, when the wedge member 40 is retracted, the rotation holding member 30 is always unlocked, so that the unlocking state is always held during the operation, so that the operation is not hindered. Therefore, workability and safety are improved.

  And the connection of the said connection structure 10 can be cancelled | released by pulling out the insertion parts 23 and 24 of the main body member 20 from the wedge receptacle 15 of the support | pillar 11 with the rotation holding member 30 fixed. Even when the connecting structure 10 is connected, the rotation holding member 30 and the wedge member 40 are operated by engaging the engaging recess 44 of the wedge member 40 with the first locking portion 26 of the main body member 20. Can be prevented.

  As shown and described above, the temporary scaffolding connection structure 10 of the present invention has a pair of plate-like members 21 having insertion parts 23 and 24 to which the scaffolding material P is fixed and can be inserted into the wedge receiver 15. 22, a rotation shaft portion 25 provided on the upper side of the insertion portions 23, 24 of the plate-like members 21, 22, and a first locking portion provided on the scaffold material P-side upper portion of the plate-like members 21, 22 26, a main body member 20 having a second locking portion 27 provided below the first locking portion 26 and closer to the rotating shaft portion 25 than the first locking portion 26, and the rotating shaft portion 25. A rotary holding member 30 that is pivotally supported and has a holding portion 31 that holds the wedge receiver 15 together with the insertion portions 23 and 24 when fixed, and an engaging portion 35 provided on the rear side of the holding portion 31. And inserted between the first and second engaging portions 26 and 27 and the rotation holding member 30 so as to be able to advance and retract. It is wedged between the rear side portion 33 of the rotation holding member 30 and the first locking portion 26 and the second locking portion 27 to fix the rotation holding member 30 so as not to rotate, and to rotate when retreating. And a wedge member 40 having a hook-like portion 45 that engages with the engaging portion 35 of the holding member 30 to rotate and release the rotation holding member 30. Therefore, the scaffold member 40 can be connected to or released from the support 11 easily and reliably by the advancement and retraction of the wedge member 40. Further, since the rotation holding member 30 is fixed to be non-rotatable by wedge-attaching the wedge member 40 at the time of connection, the wedge receiver 15 can be firmly held by the insertion portions 23 and 24 and the fixed holding member 30. It becomes possible, and excellent stability at the time of connection can be obtained.

  Further, if a tip protrusion 32 that protrudes toward the insertion hole 16 of the wedge receiver 15 when the wedge receiver 15 is held is formed at the tip of the holding section 31 of the rotation holding member 30, the side portion 15A of the wedge receiver 15 is formed. It becomes possible to surround and hold, and the temporary scaffolding connecting structure 10 is not detached from the wedge receiver 15 at the time of fixing, and safety can be improved.

  In addition, when the wedge member 40 moves forward, the linear side portion 42 that contacts the rear side portion of the rotation holding member 30, and the inclined side that contacts the first locking portion 26 and the second locking portion 27. If the portion 43 is provided, the wedge member can be smoothly inserted between the rear side portion 33 of the rotation holding member 30 and the first locking portion 26 and the second locking portion 27. The rotation holding member 30 can be fixed and held more easily and reliably.

  In addition, if the wedge member 40 is provided with the engagement recess 44 that can be engaged with the first locking portion 26 when retreating, the wedge member 40 can be held at the retreat position. 40 does not get in the way, and the rotation holding member 30 can be always held in the unlocked state, and workability and safety can be further improved.

  Furthermore, if each insertion part 23 and 24 of a pair of plate-shaped member 21 and 22 is mutually bent and welded, insertion part 23 and 24 will be reinforced and each plate-shaped member 21 and 22 will be expanded. This can be prevented and the main body member 20 can be formed at low cost.

  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.

DESCRIPTION OF SYMBOLS 10 Connection structure for temporary scaffolds 11 Support | pillar 15 Wedge receiver 16 Insertion hole 20 Main body member 21,22 Plate-shaped member 23,24 Insertion part 25 Rotating shaft part 26 1st locking part 27 2nd locking part 30 Rotation Holding member 31 Holding portion 32 Tip protrusion 35 Engaging portion 40 Wedge member 41 Wedge main body 42 Linear side portion 43 Inclined side portion 44 Engaging recess 45 Wedge portion P Scaffolding material

Claims (5)

A structure for removably connecting the scaffold to the wedge holder of the support,
A pair of plate-like members having an insertion part formed so that the scaffolding material is fixed and can be inserted into the wedge receiver, and a rotation shaft part provided on the insertion part side upper part of the plate-like member; A first locking portion provided on the scaffold material side upper portion of the plate-like member; and a second engagement provided below the first locking portion and closer to the rotating shaft portion than the first locking portion. A body member having a stop, and
A holding portion that is pivotally supported by the turning shaft portion of the main body member and holds the wedge receiver together with the insertion portion of the main body member when fixed, and an engagement provided on the rear side of the holding portion A rotation holding member having a portion;
The first locking portion and the second locking portion of the main body member are inserted between the rotation holding member so as to be able to advance and retreat, and the rear side portion of the rotation holding member and the first locking are moved forward. And the second retaining portion are wedged to fix the rotation holding member so as not to rotate, and engage with the engagement portion of the rotation holding member when retreating and hold the rotation. A connecting structure for a temporary scaffold, comprising: a wedge member having a hook-shaped portion for rotating and releasing the member.   2. The connection structure for a temporary scaffold according to claim 1, wherein a tip protrusion is formed to protrude toward the insertion hole of the wedge receiver when the wedge receiver is held at a tip of the holding portion of the rotation holding member.   The wedge member has a linear side portion that abuts on a rear side portion of the rotation holding member and an inclined side portion that abuts on the first locking portion and the second locking portion when moving forward. The connection structure for temporary scaffolds according to claim 1 or 2.   The connection structure for a temporary scaffold according to any one of claims 1 to 3, wherein the wedge member has a locking recess that can be locked to the first locking portion when retreating.   The connection structure for a temporary scaffold according to any one of claims 1 to 4, wherein the insertion portions of the pair of plate-like members are bent and welded to each other.

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