JP2590508Y2 - Overhang scaffolding bracket - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhang scaffold bracket provided between a temporary scaffold and a structure.

[0002]

2. Description of the Related Art When constructing a concrete structure,
Prior to or in parallel with the construction of the structure, it is necessary to set up a temporary working scaffold. This temporary scaffold is for rebar assembly,
It is used for multiple purposes such as for formwork assembly, finishing work, work passages, etc., and the appropriate separation between the structure and the temporary scaffold is determined according to the type of work.

[0003] When there is a finishing work or the like on the outer surface of the structure, the temporary scaffold may be installed at a distance of, for example, 30 cm or more from the structure. In this case, in order to prevent flying and falling objects, the structure is installed. A scaffold curing facility must be installed between the building and the temporary scaffold. As such a scaffolding curing facility, one end of a wall connecting hardware is screwed into a wall connecting insert previously embedded in a structure, and the other end is fixed to a support member of the temporary scaffold to fix the temporary scaffold, and to connect the wall to the wall. In some cases, a curing net is built using hardware.

[0004] However, in the case of such a curing net using the wall connecting hardware, a large number of wall connecting hardware are required to fix the curing net, and when the finishing work is performed, the curing net is temporarily used. Must be removed. In addition, when the temporary scaffold is far from the structure, it is necessary to newly provide an overhanging scaffold. So, conventionally,
When the separation between the temporary scaffold and the structure becomes large, the bracket for the overhanging scaffold is attached to the support member of the temporary scaffold, and a scaffold plate is laid on this bracket to double as the overhanging scaffold, and to reduce the gap between the temporary scaffold and the structure. I was curing.

[0005]

[Problems to be Solved by the Invention] However, such conventional brackets for overhanging scaffolds are almost fixed when they are attached to the support members of the temporary scaffolds. The scaffold had to be removed once. Since the removal of the scaffold plate is performed in a narrow space between the structure and the temporary scaffold, it is not only extremely troublesome, but also a dangerous work because heavy objects are handled. In addition, the scaffold had to be laid again at the place where the finishing work was completed.

The present invention has been made in view of such a point, and when necessary, the overhanging member is rotated and locked while the scaffold plate is laid, so that the work space for the finishing work can be made dangerous work. An object of the present invention is to provide a bracket for an overhang scaffold that can be easily secured without being accompanied, can easily recover the overhang scaffold when necessary, and has sufficient strength as the overhang scaffold.

[0007]

Means for Solving the Problems In order to solve the above problems and achieve the object, the invention according to claim 1 is configured as follows. The invention according to claim 1 is characterized in that "an overhanging member attaching means to be attached to a pillar member of a temporary scaffold, and an overhanging member connecting portion which is connected to the overhanging member attaching means at one end side so as to be rotatable in a vertical direction. A tubular overhanging member connected to the overhanging member connecting portion at the other end at a substantially right angle, and an arcuate recess formed at the end of the overhanging member at the time of overhanging fits into the overhanging member. And an overhanging member locking metal attached to the overhanging member, which locks the overhanging member in that state when the overhanging member is turned in the direction of the support member, and a rotatable vertically to the overhanging member. An overhanging member supporting means having an attachment means connected to and detachable from the support member. ].

According to the first aspect of the present invention, the overhanging member attaching means is attached to the column member of the temporary scaffold, and the overhanging member connecting means is connected to the overhanging member connecting portion. An overhang member is protruded from the member connection portion in the direction of the structure. Then, the attachment means of the overhang member supporting means, which is connected to the overhang member so as to be rotatable in the vertical direction, is attached to the support member, and a scaffold plate is laid on the overhang member to provide the overhang scaffold.

At the time of overhang, the tubular overhang member has an arcuate concave portion formed at the end of the support member, which is fitted to the support member, so that the support is horizontal, and even when a horizontal load is applied, shaking occurs. Is suppressed. Further, during the operation, the vertical load applied to the overhanging member is received by the overhanging member support means. Also, when an upward wind load is applied to the overhanging member, the overhanging member support means prevents the overhanging member from floating.

When necessary, the attachment means of the overhang member supporting means is removed from the support member, and the overhang member is connected to the overhang portion attachment means while the scaffold plate is laid. The scaffold plate and the overhanging member are fixed to the column member of the temporary scaffold by using the overhanging member lock fitting attached to the overhanging member to secure a work space. At this time, the extending member supporting means connected to the extending member so as to be rotatable in the vertical direction is rotated in the direction of the extending member and folded.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a side view showing a state in which the overhang scaffold bracket of the present invention is attached to a temporary scaffold,
2 is a plan view of the bracket for the overhang scaffold, and FIG. 3 is II in FIG.
FIG. 4 is a sectional view taken along the line IV-IV of FIG. 1, and FIG.
FIG. 6 is a side view for explaining an operation of temporarily removing the overhanging scaffold.

The overhanging scaffolding bracket 1 has a clamp 4 to be fastened to a vertical support 3 of a torii formwork 2 constituting a temporary scaffold, and this clamp 4 is a vertical support member A of the temporary scaffold. The projecting member attaching means B attached to the column 3 is constituted. A projecting member is formed by a pin-locking member 5 formed in a U-shape and welded to the clamp 4 and a pipe connecting member 7 rotatably connected to the pin-locking member 5 via a locking pin 6. An extension member connecting portion C is connected to the mounting means B so as to be rotatable in the axial direction of the column member A.

A projecting member projecting from the projecting member connection portion C by a tube member 8 vertically projecting from the tube fitting 7 and a scaffold plate locking piece 9 fixed to the tip of the tube member 8. The member D is constituted. As shown in FIG. 2, the clamp 4 has a semi-circular instep fitting 4 a whose inner surface matches the outer diameter of the vertical support 3, and a pin 4 b connected to the instep clamp 4 a having an inner surface formed in an arc shape. Clasp 4 that can be freely rotated
c, and a bolt nut 4e rotatably attached to the instep fastener 4a via a pin 4d.

The vertical support 3 of the torii formwork 2 is sandwiched between the upper fastener 4a and the second fastener 4c.
e is inserted into a notch 4f formed at the end of the second fitting 4c, and the clamp 4 is fastened to a predetermined position of the vertical support 3 by tightening the bolt and nut 4e. The clamp 4 in this embodiment is of a type for fastening a steel pipe (outer diameter φ = 42.7 mm) of the vertical support portion 3 of the torii formwork 2, but uses a single pipe (outer diameter φ = 48.6 mm). Of course, either a fastening type or a type combining the two may be used.

The outer surface 4g of the upper fastener 4a is substantially perpendicular to the outer surface 4g.
A flat surface is formed, and a bottom surface portion 5a of a pin locking metal member 5 having a U-shaped steel plate is welded to the outer surface 4g. A pin hole 5c is formed in each of the side surfaces 5b of the pin locking member 5.
The locking pin 6 is inserted into the pin hole 5c. The locking pin 6 also penetrates a pin hole 7b formed in the upper part of both side parts 7a of the tube connection fitting 7 having a U-shaped cross section which sandwiches both side parts 5b of the pin locking metal 5 from the outside. As shown in FIG. 1, the pipe connection fitting 7 is suspended from the pin locking fitting 5 via the locking pin 6, and is configured to be rotatable about the locking pin 6.

A pipe member insertion hole 7d is formed in a lower portion of a front portion 7c sandwiched between both side portions 7a of the pipe fitting 7. The pipe member 8 is tightly inserted into the pipe member insertion hole 7d, and is fixed to the pipe connection fitting 7 by welding a peripheral surface of the pipe member 8. A support end portion 8 of a steel pipe 8a constituting a pipe member 8 inserted through a pipe connection fitting 7 and protruding in a direction of a vertical support portion 3.
In b, an arc portion 8c that matches the outer diameter of the vertical support portion 3 is formed. When the clamp 4 is fastened to the vertical support 3, the arc 8 c comes into contact with the vertical support 3.
The rotation of the pipe fitting 7 is stopped, and thus the horizontality of the pipe member 8 is ensured. Further, even when a horizontal load is applied to the pipe member 8, the shaking is suppressed.

A scaffold plate locking piece 9 is fixed to the distal end of the tube member 8. The scaffold locking piece 9 has a chain connecting hole 9a.
Are drilled, and the chain 1 is inserted into the chain connecting hole 9a.
0 is locked, and this chain 10 constitutes an extension member locking metal fitting E attached to the extension member D. A bracket 1 is provided below the substantially central portion of the tube member 8 constituting the overhang member D.
1 is welded, and the bracket 11 is formed in a U-shape. One end 12a of the support tube member 12 is inserted into the bracket 11, and the one end 12a is connected to the bracket 11 via a connecting pin 13 so as to be rotatable in the vertical direction. The support tube member 12 constitutes the projecting member support means F, and the other end portion 12b of the support tube member 12 has a fitting 1
4 are welded. The mounting bracket 14 is formed in a U-shape, and the mounting bracket 14 is applied to the vertical support 3,
By screwing the bolt 15 into the locking screw hole 14a, the tip end of the bolt 15 presses and fixes the vertical support 3, and the mounting bracket 14 is attached to the vertical support 3. The mounting bracket 14 and the bolt 15 constitute mounting means G that can be attached to and detached from the support member A.

Next, the operation of laying an overhanging scaffold using the overhanging scaffold bracket 1 having the above configuration will be described with reference to FIG. 1 and the operation of temporarily removing the overhanging scaffold with reference to FIG. FIG.
As shown in (1), a clamp 4 is attached to the vertical column 3 of the temporary scaffold, and a pipe fitting 7 is connected to the clamp 4. From this pipe fitting 7, a pipe member 8 having a length adapted to the distance between the vertical support 3 of the torii frame 2 constituting the temporary scaffold and the structure 16 is projected in the direction of the structure. Then, the mounting bracket 14 of the support pipe member 12 connected to the bracket 11 of the pipe member 8 via the connection pin 13 is attached by screwing a bolt 15 to the vertical column 3. Then, the pipe member 8
The scaffolding board 17 is laid on the. The scaffold plate 17 abuts its side surface 17a against the scaffold plate locking piece 9 to prevent lateral movement,
Bracket 1 for overhanging scaffold using rubber band 18 for fixing
Fixed to.

The overhanging scaffold formed as described above constitutes a working scaffold and also a curing facility for defending flying objects. In addition, a cloth frame with a floor or a curing net may be laid instead of the scaffold plate 17. The overhanging scaffold bracket 1 can be operated on the scaffold plate 17, and the vertical load applied to the tube member 8 at this time is received by the support tube member 12. When an upward wind load is applied to the pipe member 8, the support pipe member 12 prevents the pipe member 8 from rising.

When the overhanging scaffold bracket 1 is temporarily removed for the finishing work of the structure 13, the bolts 15 of the mounting bracket 14 are loosened, and the mounting bracket 14 is moved from the vertical support 3 of the temporary scaffold. Remove. Then, while the scaffold plate 17 is fixed to the pipe member 8 as shown in FIG.
Is rotated upward about the locking pin 6. Almost 90
Then, the chain 10 is wound around the vertical support 3 so as to fix the bracket 1 for the overhanging scaffold. At this time, the support pipe member 12 connected to the pipe member 8 via the connection pin 13
Is turned around the connecting pin 13 and folded toward the pipe member 8.

Accordingly, at the time of temporary removal, the extension of the overhanging scaffold from the temporary scaffold substantially corresponds to the length of the pipe fitting 7 connected to the clamp 4, so that a working space is secured between the structure and the structure 16. In this state, the support pipe member 12 is turned around the connecting pin 13 and folded toward the pipe member 8, so that it does not become an obstacle.

[0022]

As described above, according to the first aspect of the present invention, the overhanging member attaching means is attached to the pillar member of the temporary scaffold, and the overhanging member connecting portion is connected to the overhanging member attaching means. The projecting member is projected from the projecting member connecting portion in the direction of the structure, and the mounting means of the projecting member supporting means, which is connected to the projecting member so as to be rotatable in the vertical direction, is attached to the support member, and finishing is performed. An overhanging scaffold can be easily secured in the work space for construction without dangerous work.

Also, at the time of overhang, an arc-shaped concave portion formed at the end of the tubular overhang member on the side of the upright member is fitted to the upright member, so that horizontality is ensured, and even when a horizontal load is applied. Shaking is suppressed. Further, when the overhang member is used as an overhanging scaffold, the overhang member receives a vertical load applied to the overhang member, and when an upward wind load is applied to the overhang member, the overhang member supporting unit lifts the overhang member. To prevent

When necessary, the attachment means of the overhanging member support means is removed from the support member, and the overhang member is attached to the temporary scaffold support with the scaffold plate being laid around the connection portion with the overhang attachment means. It is possible to secure the work space by rotating the member in the axial direction and fixing the scaffold plate and the projecting member to the column member of the temporary scaffold using the projecting member locking fitting attached to the projecting member. At this time, the overhanging member supporting means connected to the overhanging member so as to be rotatable in the vertical direction is folded in the direction of the overhanging member and does not become an obstacle.

[Brief description of the drawings]

FIG. 1 is a side view of a state in which a bracket for an overhanging scaffold is attached to a temporary scaffold.

FIG. 2 is a plan view of an overhang scaffold bracket.

FIG. 3 is a sectional view taken along the line III-III of FIG. 1;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1;

FIG. 5 is a sectional view taken along line VV of FIG. 1;

FIG. 6 is a side view illustrating an operation of temporarily removing the overhanging scaffold.

[Description of Signs] 1 Bracket for overhanging scaffolding 2 Torii frame 3 Vertical support 4 Clamp 5 Pin locking metal 6 Locking pin 7 Pipe connection metal 8 Pipe member 9 Scaffold plate locking piece 10 Chain 12 Support pipe member 13 Connecting pin 16 Structure 17 Scaffolding plate A Prop member B Overhang member supporting means C Overhang member connecting part D Overhang member E Overhang member locking fitting F Overhang member supporting means G Mounting means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 6-32582 (JP, U) JP-A 64-43141 (JP, U) JP 1-15793 (JP, Y2) JP 4 52352 (JP, Y2) Jikgyo 4-50352 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04G 1/26 E04G 3/08

Claims (1)

(57) [Scope of request for utility model registration] An overhanging member attaching means for attaching to a support member of a temporary scaffold, an overhanging member connecting portion which is connected to the overhanging member attaching means at one end side so as to be rotatable in a vertical direction, and an overhanging member. A tubular projecting member that is connected to the projecting member connecting portion at the other end side at a substantially right angle, and that has an arc-shaped recess formed at the end of the strut member at the time of projecting, and that fits into the strut member; An overhanging member locking bracket attached to an outrigging member to lock the overhanging member in that state when the overhanging member is rotated in the direction of the support member; and the support member rotatably connected to the overhang member in a vertical direction. An overhanging scaffold bracket comprising: an overhanging member supporting means provided with an attaching means detachable from a member.