JP3996993B2 - Construction scaffolding board - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a construction scaffold plate used for a temporary scaffold at a construction site.
[0002]
[Prior art]
Construction scaffolding boards are spanned between building frames assembled around the building to form working scaffolds. As described in Japanese Utility Model Publication No. 60-1840 at both ends of the scaffolding board main body. In addition, a substantially inverted U-shaped clamp fitting for locking the scaffolding plate to a horizontal member made of a tubular body of a building frame is provided. When the scaffolding plate is passed over, the locking bracket attached to the base of the clamp bracket is rotated to project the clamping projection to clamp the horizontal member so that the scaffolding plate does not easily blow up due to wind pressure. Yes.
[0003]
And when the construction work is finished and the work scaffold is dismantled, the clamp brackets at the four corners of the scaffold plate are manually rotated to release the holding state of the horizontal member, and the scaffold plate is removed from the building frame. Yes.
[0004]
[Problems to be solved by the invention]
However, although the above-mentioned conventional lock plate of the scaffolding plate has a structure that can be temporarily held at the position where the clamped state is released, the lock metal plate can rotate and return to the original clamped state with a slight vibration. Yes, when one person tries to remove the scaffolding plate, if one end of the scaffolding plate is lifted, the lock metal fitting on the other end may rotate and be in a clamping state. Moreover, although the recessed part of the clamp metal fitting 2 of the conventional scaffold board is made slightly larger than the building frame horizontal member P in consideration of the dimensional accuracy at the time of assembling the building frame, as shown in FIG. When the main body 1 is tilted, the lower opening of the recess is not dimensioned so that the building frame horizontal member P can be pulled out in the vertical direction, and the vertical direction is maintained while the scaffolding plate main body is kept almost horizontal after releasing the lock fittings at the four corners. It has a structure that cannot be removed without lifting it.
[0005]
For this reason, removal work may not be achieved by one person's work, and removal work is often carried out by a group of two people, and the efficiency of the dismantling work is never good.
[0006]
In view of the above points, an object of the present invention is to provide a construction scaffold plate that can be easily removed even by one person and can improve the efficiency of the dismantling work.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is provided with a lock metal fitting provided with a substantially inverted U-shaped clamp fitting opened downward at both ends of a scaffold plate body, and two guide holes formed at the base of the clamp fitting. Attach via two support pins. At the lower end of the lock fitting, a pinching protrusion is formed to contact the lower surface of the building frame horizontal member when holding the building frame horizontal member. in the above construction scaffolding plate as the holding projection is retractable toward the lower opening of the recess of the clamping bracket for clamping and releasing the Kenwaku lateral bridging material, at least one of the scaffold plate body while rotating along the The lower opening of the concave part of the clamp bracket on the side is wide enough to be extracted from the building frame horizontal member with the scaffold plate body tilted, and the lower opening of the concave part of the clamp bracket with the scaffold plate body tilted clamp bracket that projects When pressing the lock fitting of the base to Kenwaku horizontal member, apart from the lower surface of Kenwaku horizontal member the locking fitting while being guided by the guide hole and retracted retracted from the lower opening of the recess of the clamping bracket, the clamping bracket The support pin and the guide hole are arranged and formed so that the lower opening of the concave portion is opened .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
In the construction scaffold plate according to the present invention, when trying to disassemble the scaffold plate spanned between the horizontal members of the assembled building frame, the lock fitting of the clamp fitting on one end side of the scaffold plate body is operated. Then, the sandwiched state is released, and one end side of the scaffold plate is lifted upward. When one side of this scaffolding plate is lifted and the scaffolding plate is pushed down diagonally downward along the tilt direction, the edge facing the concave side of the lock fitting of the clamp fitting arranged on the other end side is the side of the building frame. The lock fitting comes into contact with the base material and the lock fitting is retracted and retracted from the recess by the pressing force. Next, when the scaffolding plate is tilted upward, the lower opening of the concave part of the clamp fitting is wide enough to be pulled out from the building frame horizontal member with the scaffolding plate tilted. It can be removed from the frame.
[0009]
In this way, after releasing the clamping state by manually operating the clamp metal fitting on one end of the scaffolding plate, lift the scaffolding plate and do not touch the lock metal fitting on the other clamp. The scaffolding plate can be removed by releasing the sandwiched state, and the removal work can be easily performed by one person to improve the efficiency of the dismantling work.
[0010]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0011]
FIG. 1 shows a construction scaffolding plate according to the present invention. At the four corners of both ends of the scaffolding plate main body 1, there are provided substantially inverted U-shaped clamp fittings 2, which are shown in FIG. As shown in the figure, it is provided with a recess 3 into which a building frame horizontal member P is fitted, and the recess 3 is approximately 22 mm from two centers separated by a distance L2 of approximately 6.5 mm in the horizontal direction across the center of the recess 3. It is formed by the circular arc drawn by the radius r.
[0012]
This is made wider by 3 mm than the distance L1 between the two centers O and O ′ of the recesses of the conventional clamp fitting shown in FIG. 7, and as shown in FIG. If it lifts in the state made to do, the area which can be extracted from the building frame horizontal member P is ensured.
[0013]
In addition, a lock fitting 4 that clamps the side surface of the building frame horizontal member P is disposed at the base of the clamp fitting 2. As shown in FIG. 2, the lock fitting 4 is curved so that the edge portion 5 located on the concave portion 3 side is curved along the outer periphery of the building frame horizontal member P. A clamping protrusion 6 is formed to be brought into contact with the lower surface of the building frame horizontal member P when the frame member P is clamped, and the tip of the clamping protrusion 6 is a building frame when the building frame horizontal member P is clamped. It is formed so as to protrude to a position just below the center of the cross section of the horizontal member P.
[0014]
In addition, in order to allow the clamping protrusion 6 of the lock fitting 4 to protrude and retract with respect to the recess 3 of the clamp fitting 2, two support pins 9, 10 are provided in the two guide holes 7, 8 drilled in the lock fitting 4. The lock fitting 4 is attached to the clamp fitting 2 via the guide holes 7 and 8, and the holding projection 6 of the lock fitting 4 is allowed to protrude and retract in the recess 3 of the clamp fitting 2 while being guided by the guide holes 7 and 8. It can be held and released.
[0015]
The arrangement of the support pins 9 and 10 and the hole shape of the guide holes 7 and 8 project into the concave portion 3 of the clamp fitting 2 when the scaffold plate body 1 is tilted and pushed down obliquely downward along the tilt direction. As shown in FIG. 5, the edge 5 of the lock fitting 4 is pressed against the building frame horizontal member P, and the lock fitting 4 is retracted and retracted from the recess 3 by the pressing force. In the clamp fitting 2 shown in FIG. 2, the support pin 10 is located slightly above the right side of the support pin 9 so that the clamp fitting 2 can be easily retracted, and the guide holes 7 and 8 are also at the edge 5 of the lock fitting 4 when inclined. It is devised in a shape that can be smoothly evacuated and immersed by pressing the side.
[0016]
Further, the guide hole 8 is formed in a substantially L shape to form a locking portion 11. As shown in FIG. 5, when the lock fitting 4 is retracted and retracted from the recess 3 of the clamp fitting 2, the support pin 10 is fitted into the locking portion 11. The lock metal fitting 4 is inserted to prevent it from slipping down.
[0017]
Next, a method for removing the scaffold plate according to the present invention will be described.
[0018]
As shown in FIG. 3, the scaffolding plate is locked by fitting clamp metal fittings 2 at both ends of the scaffolding plate main body 1 into the building frame horizontal member P of the opposed building frame. Then, when the work is completed and the scaffold plate is removed, first, as shown in FIG. 4, the clamp metal plate 2 on one end side of the scaffold plate body 1 is operated to release the clamping state, and the scaffold plate is left as it is. The main body 1 is lifted upward, and one end of the scaffolding plate is removed from the building frame horizontal member P.
[0019]
When one end side of the scaffolding plate is removed, the scaffolding plate body 1 is inclined. Therefore, as shown in FIG. 4, when the scaffold board body 1 in an inclined state is pushed down obliquely in that state, the edge 5 of the lock fitting 4 of the lower clamp fitting 2 is laterally moved as shown in FIG. It will be pressed against the base material P, and the lock metal fitting 4 is rotated so as to be retracted and retracted from the recess 3 by its action. Then, when it is rotated to a predetermined position, the support pin 10 is fitted into the engaging portion 11 of the guide hole 8 of the lock fitting 4 so as to prevent the lock fitting 4 from slipping.
[0020]
In this state, as shown in FIG. 6, when the scaffold body 1 in an inclined state is lifted in the vertical direction, the lower opening of the concave portion 3 of the clamp metal fitting 2 is wide enough to be extracted from the building frame horizontal member P. It can be easily removed from the building frame horizontal member P.
[0021]
In this way, when the clamp metal fitting 2 at one end of the scaffolding plate is released and lifted, and in this state, it is pushed down obliquely along the inclination direction of the scaffolding plate, the lock metal fitting 4 of the clamp metal fitting 2 on the other end side is pushed. Since the clamping can be released without touching and the scaffolding plate can be easily removed, one worker can easily remove it and improve the efficiency of the dismantling work.
[0022]
When attaching this scaffolding plate, the locking portion 11 of the guide hole 8 of the lock fitting 4 is fitted into the support pin 10 to lock the lock fitting 4, and in this state it is hung on the building frame horizontal member P. Then, the lock fitting 4 is held. When the lock metal fitting 4 is in a clamped state, even if the scaffolding plate is blown up by wind pressure, the clamp protrusion 6 of the lock metal fitting 4 provided in the clamp metal fitting 2 is in contact with the lower surface of the horizontal member P and is clamped. The scaffolding plate will not come off.
[0023]
Note that it is convenient to attach the clamp fitting 2 of the present embodiment to both ends of the scaffold plate, so that it is possible to remove the lock bracket without selecting the release side one by one, but only one end side of the scaffold plate of the present embodiment is used. The clamp fitting 2 can also be used.
[0024]
【The invention's effect】
As described above, according to the construction scaffolding plate according to the present invention, the lower opening of the concave portion of the clamp fitting on at least one side of the scaffolding plate body is extracted from the building frame horizontal member with the scaffolding plate body inclined. When the lock bracket at the base of the clamp fitting that protrudes into the lower opening of the concave portion of the clamp fitting is pressed against the building frame horizontal member while the scaffold plate body is inclined , the lock fitting is moved into the guide hole. The support pin and the guide hole are arranged and formed so as to retract and sink from the lower opening of the recess of the clamp fitting while being guided by the guide, and are separated from the lower surface of the building frame horizontal member to open the lower opening of the recess of the clamp fitting . So, when removing the scaffolding plate, remove the clamp bracket on one end of the scaffolding plate by hand, lift it up and push it down in the tilted direction, and remove the lock bracket on the other end without touching it. Door can be, perform the removal work of easily scaffolding plate also one work, it is possible to improve the efficiency of the demolition work.
[Brief description of the drawings]
FIG. 1 is a front view of a construction scaffold plate according to the present invention.
FIG. 2 is an explanatory view showing the clamp fitting of FIG. 1;
FIG. 3 is an explanatory diagram for explaining a use situation of a construction scaffold board according to the present invention.
FIG. 4 is an explanatory diagram for explaining a use situation of a construction scaffold board according to the present invention.
FIG. 5 is an explanatory diagram for explaining a use situation of a construction scaffold board according to the present invention.
FIG. 6 is an explanatory diagram for explaining a use situation of the construction scaffold board according to the present invention.
FIG. 7 is an explanatory view corresponding to FIG. 2 of a conventional construction scaffold board.
[Explanation of sign]
DESCRIPTION OF SYMBOLS 1 ... Scaffold board main body 2 ... Clamp metal fitting 3 ... Recessed part 4 ... Lock metal fitting 5 ... Edge part 6 ... Protrusion 7 and 8 ... Guide hole 9, 10 ... Support pin 11 ... Locking part P ... Building frame horizontal member

Claims (1)

Comprising a clamp fitting of substantially inverted U-shape which opens downward at both ends of the scaffolding plate body, mounting the lock fitting formed with two guide holes in the base of the clamp bracket via two support pins, the lock the lower end of the fitting to form a clamping projection which is abutted against the lower surface of Kenwaku horizontal member when sandwiching the Kenwaku horizontal member, said pinching projections while rotating along the lock fitting into the guide hole In a construction scaffold plate that protrudes and descends toward the lower opening of the concave portion of the clamp bracket to sandwich and release the building frame horizontal member, the lower opening of the concave portion of the clamp bracket on at least one side of the scaffold plate body is the scaffold plate With the main body tilted, it can be pulled out from the building frame horizontal member, and the clamp bracket base lock fitting protruding into the lower opening of the recess of the clamp fitting with the scaffold plate main body tilted is the building frame. Push on horizontal member Teru When the lock fitting is spaced from the lower surface of Kenwaku horizontal member retracted retracted from the lower opening of the recess of the clamp bracket while being guided by the guide hole, so as to open the lower opening of the recess of the clamping bracket A construction scaffold plate, wherein the support pins and guide holes are arranged and formed.

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