JP2018123474A - Bearing member for temporary scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing member for temporary scaffold, easily attachable and good for fall prevention from a stage plank.SOLUTION: A bearing member for temporary scaffold consists of: a stage plank bracket part 2, which is U-shaped in a cross section and attachable to an outer surface of a side frame 105 of a stage plank 104 set at a temporary scaffold 100, which also has a top plate 4 and an extended part 4a, extending in parallel with a bottom plate 6; a metal fitting 3, which a screw shaft 51 of a jack fits into; an insertion pin 7, which is inserted from the extended part of the bracket part 2 down to the stage plank; and a movement regulation member 8, which prevents the insertion pin 7 attached to the bracket part 2 from turning around by engaging with an undersurface inner rim 105d of the side frame 105.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a support member for a temporary scaffold that supports a temporary scaffold with respect to a building, and in particular, a temporary scaffold that is attached to a scaffold assembled along the outer periphery of a building and supports the scaffold by striking the building. The present invention relates to a support member.

  Supporting the scaffold to the building by providing a compression member for the scaffold between the scaffold assembled along the outer periphery of the building and compressing the scaffold against the building by the compression member It has been known.

  In order to eliminate the problem of the outer wall surface of the building being damaged due to the load from the scaffolding, the location where the compression member abuts against the building is a highly rigid portion of the outer wall surface of the building. A technique for fixing a scaffold support member to a scaffold plate is known.

  For example, the supporting device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2004-150161) is provided with a scaffolding plate side contact portion that contacts the scaffolding plate at one end of the device and the outside of the building at the other end. By providing a building-side contact portion that contacts the wall surface, and providing a hook-like movement restricting member at the scaffold plate-side contact portion, and inserting the hook-like movement restricting member into the mesh-like upper surface of the scaffold plate It is designed to regulate the movement of the scaffolding board.

  In Patent Document 2 (Japanese Patent Laid-Open No. 2011-10616), a clamp that is provided on an upper surface side portion of a mounting bracket and clamps a side frame portion of a scaffolding plate in a scaffold from both inside and outside is used. A temporary scaffolding support device for attaching a contact member to a temporary scaffolding is disclosed.

JP 2004-150161 A JP 2011-106161 A

  However, the supporting device of Patent Document 1 is configured such that the tread plate side abutting portion that abuts the outer surface of the frame of the scaffolding plate contacts the upper surface and the side surface of the frame, and the movement restricting member is inserted from the upper side of the tread plate. Therefore, when the scaffolding plate is displaced downward, there is a problem that it may slip off from the scaffolding plate and fall off. For example, when the scaffolding board is tilted to the building side, the scaffolding board is displaced downward, so that the rattling of the treadboard side abutting part increases, and the support device is moved by the compressive force of the building side receiving part. There was also a risk of falling off. In the support device, the lower plate portion of the tread plate side contact portion prevents slipping upward, but the size of the lower plate portion can be increased from the standpoint of attachment work to the tread plate. In addition, since the size of the movement restricting member is small with respect to the mesh hole, the movement restricting member may be displaced in the front-rear direction and the left-right direction within the mesh. I couldn't say that.

  Moreover, since the support apparatus of patent document 2 is the attachment by the clamp which clamps the flame | frame of a scaffolding board from the front and back side, it was necessary to tighten using a fixing screw for attachment work, and there existed a problem that work was complicated. . Further, in a configuration in which a metal plate is usually bent and tightened to a thin frame of a scaffold plate using a fixing screw, sufficient fixing strength cannot be obtained, and the support device may fall off the scaffold plate.

  Therefore, a technical problem to be solved by the present invention is to provide a temporary scaffolding support member that can be easily attached and can be prevented from falling off the scaffolding plate.

  In order to solve the above technical problem, the present invention provides a temporary scaffolding support member having the following configuration.

According to the first aspect of the present invention, a jack having a screw shaft and a building-side contact member that is provided at one end of the screw shaft and contacts an outer wall of the building is assembled along the outer periphery of the building. A temporary scaffolding support member attached to the temporary scaffolding,
In the temporary scaffold, a tread board receiving portion that is formed in a U-shaped cross-section that can come into contact with the outer surface of the side frame of the scaffold plate, and has an overhang portion projecting laterally with respect to the lower plate portion. When,
A mounting bracket capable of fitting the screw shaft of the jack;
An insertion pin extending downward from the overhanging portion of the tread plate receiving portion and inserted into the tread;
It is provided so as to be movable between an upper position and a lower position with respect to the lower plate portion of the tread plate receiving portion. At the upper position, it engages with the lower surface inner edge of the side frame, and A movement restricting member for restricting rotation around the insertion pin;
A support member for a temporary scaffold is provided.

  According to the second aspect of the present invention, the insertion pin has a hanging portion having a thickness dimension of the side frame and a bent portion that is provided at a lower end of the hanging portion and can be engaged with a lower edge of the side frame. The temporary scaffolding support member according to the first aspect is provided.

  According to the third aspect of the present invention, the movement restricting member extends in a direction along the axis of the mounting bracket, and is provided so as to be rotatable about the longitudinal axis as the rotation axis. And a support member for a temporary scaffold according to the first or second aspect, wherein the support member is provided with an engagement portion that is bent with respect to the first and second aspects.

According to the fourth aspect of the present invention, the mounting bracket is configured in a cylindrical shape fixed to the lower plate portion of the tread plate receiving portion,
The temporary scaffolding support member according to the third aspect, characterized in that the shaft portion of the movement restricting portion is loosely fitted and supported in a gap formed between the bottom surface of the lower plate portion and the top surface of the mounting bracket. provide.

  According to the present invention, after the tread plate receiving portion is rotated and moved to the position along the side frame from the state where the insertion pin provided in the projecting portion of the tread plate receiving portion is inserted through the tread plate, the tread plate receiving portion is The rotation of the tread plate receiving portion around the insertion pin can be restricted by a movement restricting member which is provided so as to be movable in the vertical position with respect to the lower plate portion and engages with the inner edge of the lower surface of the side frame. Thereby, it is possible to prevent the tread plate receiving portion from being displaced in the vertical and horizontal directions and from slipping in the upward and downward directions with respect to the side frame. Further, the attaching operation may be an operation of inserting the insertion pin into the tread board and rotating it around the insertion pin, and the attachment operation can be easily performed.

It is a perspective view of the temporary scaffold using the support member for temporary scaffolds concerning embodiment of this invention. It is a figure which shows the structure of the tread used for the temporary scaffold of FIG. 1, (a) is a top view, (b) is sectional drawing in the II line. It is a side view which shows the structure of the jack used for the supporting member for temporary scaffolds of FIG. It is a perspective view which shows the structure of the supporting member for temporary scaffolds of FIG. It is the perspective view seen from the other angle which shows the structure of the supporting member for temporary scaffolds of FIG. It is sectional drawing in the VI-VI line of FIG. It is a figure which shows the state which made the engagement part the wedge shape in order to press an engagement part to the lower surface rear edge of a side frame. It is a figure which shows the structure which made the front-end part of the lower board part the hypotenuse in order to press an engaging part to the lower surface rear edge of a side frame. It is a top view which shows the state which attached the supporting member for temporary scaffolds concerning this embodiment to the tread. It is a top view explaining the attachment process of the supporting member for temporary scaffolds concerning this embodiment. It is a perspective view which shows the state which rotated the supporting member for temporary scaffolds, and contacted the tread board receiving part with the outer surface of the side frame. It is a perspective view which shows the state which the engaging part of the fixed knob 8 engaged with the lower surface rear edge of the flame | frame.

  Hereinafter, the support member for temporary scaffolds which concerns on each embodiment of this invention is demonstrated, referring drawings.

  FIG. 1 is a perspective view of a temporary scaffold using a temporary scaffold support member according to an embodiment of the present invention. As shown in FIG. 1, the temporary scaffold 100 is assembled and arranged along the periphery of the building 101. The temporary scaffold 100 is composed of a plurality of support columns 102 erected in two rows at predetermined intervals along the outer periphery of the building 101 and a horizontal member 103 connected between the support columns in the horizontal direction. A plurality of treads 104 are stretched between horizontal members.

  The support | pillar 102 is comprised by the metal pipe and can be connected with a length direction. Moreover, the support | pillar 102 is provided with the connection part for connecting a horizontal material at predetermined intervals, and both are connected by inserting the both ends part of the horizontal material 103 in the said connection part. .

  As shown in FIG. 2, the tread 104 includes a side frame 105 that forms the periphery of the tread, and a mesh-like expanded metal 106 provided on the side frame 105. Further, locking hooks 107 are provided at both ends in the longitudinal direction of the side frame, and are locked to the horizontal member 103 to connect the treads.

  The side frame 105 is a metal frame having a U-shaped cross section having an upper surface 105a, a side surface 105b, and a lower surface 105c, and an expanded metal 106 is welded to the inner surface of the upper surface 105a.

  The temporary scaffolding support member 1 is provided between the tread board 104 and the building 101. The temporary scaffolding support member 1 is a member for attaching the jack 50 pressed against the outer wall surface of the building 101 to the tread plate 104.

  As shown in FIG. 3, the jack 50 includes a screw shaft 51, a building-side contact member 52 provided at one end of the screw shaft, and a nut 53 screwed to the screw shaft. The building-side abutting member 52 is a plate-like member whose outer shape has a cup shape, and a protective member 55 such as rubber is mounted on the periphery that abuts the building. The nut 53 is provided with a handle 54 that protrudes in the diameter direction. The jack 50 is inserted into the cylindrical mounting bracket 3 of the temporary scaffolding support member 1 to be described later until the nut 53 comes into contact with the jack 50, and the building-side contact is made by the screwing position of the screw shaft 51 with respect to the nut 53. The member 52 can be moved back and forth with respect to the temporary scaffolding support member 1.

  4 and 5 are perspective views showing a configuration of the temporary scaffolding support member 1 according to the present embodiment. 6 is a cross-sectional view taken along the line VI-VI in FIG. The temporary scaffolding support member 1 is provided on the lower side of the footboard receiving portion 2 that abuts on the side frame 105 of the footboard used in the temporary scaffolding 100 and on the lower side of the footboard receiving portion 2, and is fitted with the screw shaft 51 of the jack 50. A cylindrical mounting bracket 3 that can be mounted is provided.

  The tread board receiving portion 2 is configured by bending a metal plate, and includes a top plate portion 4 having a rectangular shape in plan view, a side plate portion 5 provided so as to extend downward from a front end portion of the top plate portion 4, and a side plate portion. 5 and a lower plate portion 6 provided so as to extend rearward from the lower end portion. As a result, the upper plate portion 4 and the side plate portion 5 come into contact with the upper surface and the side surface of the side frame 105, so that the tread plate receiving portion 2 comes into contact with the outer surface of the side frame 105. Note that the lower plate portion 6 is disposed so as to face the lower surface of the side frame 105 at the time of attachment, but it is preferable that the lower plate portion 6 is very close to the lower surface of the side frame 105 in view of the trouble of attachment work described later. That is, the separation distance L between the upper plate portion 4 and the lower plate portion 6 is preferably configured to be slightly larger than the thickness dimension A (see FIG. 2) of the side frame 105.

  The upper plate portion 4 is configured to be larger than the side plate portion 5 and the lower plate portion 6, and is provided with a protruding portion 4 a that protrudes laterally with respect to the lower plate portion 6. The overhanging portion 4 is provided with an insertion pin 7 extending downward.

  The insertion pin 7 is provided at an installation position such that the distance D from the side edge of the side plate portion 5 is larger than the longitudinal dimension B (see FIG. 2) of the upper surface of the side frame 105, as will be described later. In the attaching operation, when the projecting portion 4 a is brought into contact with the upper surface 105 a of the side frame 105, the insertion pin 7 can be inserted into the mesh of the expanded metal 106 of the tread plate 104.

  The insertion pin 7 has an L-shaped wire rod provided with a hanging portion 7a extending downward from the lower surface of the overhanging portion 4a and a bent portion 7b provided at the lower end of the hanging portion 7a by bending forward. It consists of The length of the hanging portion 7 a is configured to be about the thickness dimension A of the side frame 105 of the tread plate 104. As a result, the bent portion 7b is disposed below the side frame 105 of the tread plate 104 at the time of attachment, and can be engaged with the lower surface 105c of the side frame 105.

  The side plate portion 5 is provided so as to extend downward from the front end portion of the upper plate portion 4. The dimension of the side plate part 5 is based on the thickness dimension A of the side frame 105 as described above.

  The lower plate portion 6 extends from the lower end of the side plate portion 5 to the lower surface 105c side of the side frame 105, and is disposed in close proximity to the lower surface 105c. The front-rear direction dimension E of the lower plate portion 6 is approximately the same as the dimension C of the lower surface 105 c of the side frame 105. Moreover, the width direction both ends of the lower board part 6 are bend | folded below, and become the attachment parts 6a and 6b fixed to the attachment metal fitting 3 by welding.

  The mounting bracket 3 is a cylindrical member into which the screw shaft 51 of the jack 50 can be fitted, and is welded below the lower plate portion 6. As described above, the mounting portions 6a and 6b are used for welding the mounting bracket 3 and the lower plate portion 6 so that the lower end portions of the mounting portions 6a and 6b are in contact with the outer surface of the mounting bracket 3 as shown in FIG. Be placed.

  The attachment portion 6a on the distal side from the insertion pin 7 is configured to be larger than the attachment portion 6b on the proximal side, and the movement restriction of the present invention is between the outer surface of the attachment fitting 3 and the lower plate portion 6. A knob attachment gap 9 for attaching a fixed knob 8 as an example of a member is formed.

  As shown in FIG. 6, the knob attachment region 9 is a space surrounded by the outer surface of the attachment fitting 3 and the lower plate portion 6, and is attached in a state where the fixed knob 8 is loosely fitted in the space.

  The fixed knob 8 includes a shaft portion 8a loosely fitted in the knob mounting region 9, an engagement portion 8b provided at the rear end of the shaft portion 8a, and a lever portion 8c provided at the front end of the shaft portion 8a. It is the comprised metal wire.

  The engaging portion 8b and the lever portion 8c of the fixed knob 8 are provided by being bent in substantially the same direction with respect to the axial direction of the shaft portion 8a. By operating the lever portion 8c arranged in front of the side plate portion 5 of the tread plate receiving portion 2, the engaging portion 8b moves between the vertical positions as shown in FIG. It can be switched.

  The engaging portion 8 b is movable between the upper position and the lower position with respect to the lower plate portion 6. That is, as shown in FIG. 6, the engaging portion 8b moves with the shaft portion 8a as the rotation shaft by the operation of the lever portion 8c. Since the shaft portion 8 a is disposed immediately below the lower plate portion 6, the engaging portion 8 b moves between the upper position and the lower position with respect to the lower plate portion 6 by rotation.

  The engaging portion 8b at the upper position engages with the rear edge 105d of the lower surface 105c of the side frame 105, and prevents the tread board receiving portion 2 from being displaced. That is, the tread board receiving part 2 is engaged with the side frame 105 by the insertion pin 7 and the fixing knob 8 provided at different positions in the width direction, and the tread board receiving part 2 is inserted into the tread board. Rotation around the pin 7 is prevented.

  Further, by matching the length dimension of the shaft part 8 a of the fixing knob 8 with the dimension in the front-rear direction of the side frame 105, the engaging part 8 b at the upper position indicated by the broken line is pressed against the lower rear edge 105 d of the side frame 105. In addition, it is possible to prevent the displacement of the tread board receiving portion 2 in the width direction. In this case, in order to facilitate the operation of the fixing knob 8, when the engaging portion 8b moves from the lower position to the upper position, the engaging portion 8b presses against the lower rear edge 105d of the side frame 105. It is preferable to do so.

  FIG. 7 is a view showing a state in which the engaging portion has a wedge shape in order to press the engaging portion against the rear edge of the lower surface of the side frame. As shown in FIG. 7, the engaging portion 8b is formed in a wedge shape with the surface facing the side frame 105 as the inclined surface 8d, so that the proximal end 8e abuts against the lower surface rear edge 105d of the side frame 105. Instead, when the engaging portion 8b moves from the lower position to the upper position, the distal end 8f can be brought into contact with the lower surface rear edge 105d of the side frame 105. As a result, when moving from the lower position to the upper position, the engaging portion 8b is pressed against the lower surface rear edge 105d to prevent the tread plate receiving portion 2 from being displaced in the width direction.

  FIG. 8 is a view showing a configuration in which the front end portion of the lower plate portion 6 is a hypotenuse to press the engaging portion against the lower rear edge of the side frame. As shown in FIG. 8, by making the front end portion of the lower plate portion 6 a hypotenuse, the lever portion 8c is guided by the hypotenuse 6c of the lower plate portion 6 and shifted forward, so that the engaging portion 8b is moved to the side. The frame 105 is brought into contact with the lower surface rear edge 105d.

  Next, the attachment process of the temporary scaffolding support member 1 according to the present embodiment will be described. The temporary scaffolding support member 1 according to the present embodiment is attached to the step board 104 of the temporary scaffolding 100 assembled around the building. Specifically, as shown in FIG. 9, the temporary scaffolding support member 1 is fixed between the temporary scaffolding 100 and the building 101 at a portion having high rigidity on the outer wall surface of the building 101. That is, the tread board receiving part 2 of the temporary scaffolding support member 1 to which the jack 50 is attached is brought into contact with the outer surface of the side frame 105 of the tread board 104, the jack is operated, and the building side abutting member 52 is moved to the building side. By moving the building-side abutting member 52 of the jack 50 to a portion having high rigidity on the outer wall surface of the building 101, the temporary scaffolding support member between the temporary scaffolding 100 and the building 101. 1 is fixed. For this reason, the temporary scaffold can be supported with respect to the building at a highly rigid location in the building 101, and it is possible to prevent the outer wall surface of the building 101 from being damaged by the load from the scaffold. .

  FIG. 10 is a plan view for explaining the attachment process of the temporary scaffolding support member 1 according to the present embodiment. In order to attach the temporary scaffolding support member 1 to the tread, as shown in FIG. 10, the overhanging portion 4a of the upper plate 4 of the tread receiving portion 2 is arranged on the upper surface of the side frame 105 with respect to the attaching direction. Then, the insertion pin 7 is inserted into the expanded metal mesh 106a while being rotated by about 90 degrees. At this time, the bent portion 7b of the insertion pin 7 faces the width direction of the side frame 105, and does not interfere with the side frame 105 when the insertion pin 7 is inserted into the expanded metal.

  After the insertion pin 7 is inserted, as shown by an arrow 90, the tread board receiving portion 2 is rotated around the insertion pin 7 so that the tread plate receiving portion 2 contacts the side frame 105. The state at this time is shown in FIG. In FIG. 11, the description of the jack 50 is omitted. Accordingly, the upper plate portion 4 and the side plate portion 5 are in contact with the upper surface 105 a and the side surface 105 b of the side frame 105, and the tread plate receiving portion 2 is in contact with the outer surface of the side frame 105. Further, due to the rotation of the tread plate receiving portion 2, the bent portion 7 b of the insertion pin 7 protrudes to the lower surface side of the side frame 105, and the tread plate receiving portion 2 and the side frame 105 are engaged.

  Next, as shown in FIG. 12, the lever portion 8 c of the fixed knob 8 is operated to raise the engaging portion 8 b to the upper position and engage the lower surface rear edge 105 d of the side frame 105. Thereby, the engaging portion 8 b is engaged with the side frame 105, and the tread plate receiving portion 2 is prevented from rotating around the insertion pin 7 inserted into the tread plate 104. Thereafter, the nut 53 is operated to change the screwing position of the screw shaft 51, and the building-side contact member 52 of the jack 50 is pressed against the building.

  As described above, according to each embodiment of the present invention, the tread board receiving portion 2 is moved from the state in which the insertion pin 7 provided on the protruding portion 4a of the upper plate portion 4 of the tread board receiving portion 2 is inserted into the tread plate 104. Is rotated to a position along the side frame 105, and then the engaging portion 8 b of the fixing knob 8 is engaged with the lower surface inner edge 105 d of the side frame 105, whereby the tread plate receiving portion 2 is rotated around the insertion pin 7. Can be regulated. Thereby, it is possible to prevent the tread board receiving portion 2 from being displaced in the vertical and horizontal directions and slipping off in the upward and downward directions with respect to the side frame 105. Also, the attaching operation may be an operation of inserting the insertion pin 7 into the tread plate 104 and rotating it around the insertion pin 7, and the attachment can be easily performed.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. For example, the fixed knob 8 according to the present embodiment is configured by a wire rod, and is configured to move between the vertical positions by rotating around the shaft portion 8a. However, the configuration is not limited thereto. The configuration is not particularly limited as long as it can be engaged with the inner edge of the lower surface of the side frame at a position different from the insertion pin in the width direction.

  Further, the temporary scaffolding support member according to the present embodiment is configured as a separate member independent of the jack, but may be configured integrally with the jack.

DESCRIPTION OF SYMBOLS 1 Temporary scaffolding support member 2 1st pipe body 3 Mounting bracket 4 Upper board part 4a Overhang part 5 Side board part 6 Lower board part 6a, 6b Attachment part 7 Insertion pin 7a Hanging part 7b Bending part 8 Fixed knob 8a Shaft part 8b Engagement portion 8c Lever portion 9 Knob attachment gap 50 Jack 51 Screw shaft 52 Building side abutment member 53 Nut 54 Handle 100 Temporary scaffold 101 Building 102 Strut 103 Horizontal material 104 Tread plate 105 Side frame 106 Expanded metal 107 Locking hook

Claims (4)

A temporary scaffolding support member for attaching a jack having a screw shaft and a building-side abutting member provided at one end of the screw shaft to abut against an outer wall of the building to a temporary scaffold assembled along the outer periphery of the building. There,
In the temporary scaffold, a tread board receiving portion that is formed in a U-shaped cross section that can come into contact with the outer surface of the side frame of the scaffold plate, and the upper plate portion is provided with a protruding portion that protrudes laterally with respect to the lower plate portion. When,
A mounting bracket capable of fitting the screw shaft of the jack;
An insertion pin extending downward from the overhanging portion of the tread plate receiving portion and inserted into the tread;
It is provided so as to be movable between an upper position and a lower position with respect to the lower plate portion of the tread plate receiving portion. At the upper position, it engages with the lower surface inner edge of the side frame, and A movement restricting member for restricting rotation around the insertion pin;
A support member for a temporary scaffold, comprising:   The insertion pin includes a hanging portion having a thickness dimension of the side frame and a bent portion provided at a lower end of the hanging portion and engageable with a lower edge of the side frame. The support member for temporary scaffolds of description.   The movement restricting member extends in a direction along the axis of the mounting bracket, and is provided with a shaft portion that is rotatably provided with the lengthwise axis as a rotation axis, and a member that is bent with respect to the shaft portion. The temporary scaffolding support member according to claim 1, further comprising a joint portion. The mounting bracket is configured in a cylindrical shape fixed to the lower plate portion of the tread plate receiving portion,
The support for a temporary scaffold according to claim 3, wherein the shaft portion of the movement restricting portion is loosely fitted and supported in a gap formed between the bottom surface of the lower plate portion and the top surface of the mounting bracket. Element.

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