JP2019157531A - Support frame and installation method of receiving stage - Google Patents

Abstract

To realize a receiving stage that can be assembled from the scaffolding side and does not require crane lifting work.SOLUTION: A support frame A having at least an upper fixture 10, a beam member 20, a diagonal member 30, and a lower fixture 40 is provided. The upper fixture 10 and the lower fixture 20 are configured to be attachable to the column X. One end of the beam member 20 is configured to be anchored and pivotable to the upper fixture 10, and the other end of the beam member 20 is configured such that one end of the diagonal member 30 can be rotatably connected, and the other end of the diagonal member 30 is configured to be connectable to the lower fixture 40. At the time of use, the support frame A is rotated by extending the diagonal member 30 from the state where the beam member 20 or the like is moored to the upper fixture 10 attached to the temporary scaffold, and the assembly work of the receiving stage can be completed from the temporary scaffold side.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a support frame that is attached to a temporary scaffold and used for a load receiving stage for receiving loads such as construction materials, and a method for installing the load receiving stage.

As a temporary construction method for a conventional load receiving stage used by being attached to a temporary scaffold (hereinafter, also simply referred to as “scaffold”), the invention described in Patent Document 1 below is shown.
In Patent Document 1, (i) the number of members is increased and (ii) the installation work is complicated with respect to the conventional method of constructing the load receiving stage by combining a single pipe, pipe clamp, plywood, or the like at the planned installation location of the load receiving stage. In order to solve the above problems, the beam frame and the diagonal member are folded substantially parallel on the ground to point out that there are problems such as disassembling work when changing the receiving stage. A unit that has been assembled up to a slanted state is lifted by a crane, and from that state, the slanting member is turned to attach a slinging member between the beam frame and the slanting member. A method of attaching the beam frame and the diagonal member to the mounting bracket on the frame scaffolding side after the framework is disclosed.
According to this method, compared to the conventional method, there are advantages such as elimination of the risk of dropping the member during assembly work, improvement of work efficiency, and no need for disassembly for replacement work.

Japanese Patent No. 3642653

  However, in the invention described in Patent Document 1, in order to almost assemble the load receiving stage at the stage before reaching the installation planned location (the assembly work of the beam frame and the diagonal material on the ground and the mounting work of the lifting material after lifting), It is necessary to always lift with a crane until the installation is completed.

  Therefore, the present invention has an object of providing means that can be assembled from the scaffold side and does not require lifting work with a crane when assembling the load receiving stage.

The first invention of the present application to solve the above problems is a support frame for a load receiving stage, which is attached to a column constituting a temporary scaffolding and receives a load of construction materials, etc., comprising an upper fixture, a beam The upper fixture and the lower fixture are configured to be attachable to the column, and one end of the beam material anchors the beam material to the upper fixture. The other end of the beam member is configured to be pivotably connectable to one end of the diagonal member, and the other end of the diagonal member is configured to be connectable to the lower fixture. It is characterized by.
The second invention of the present application is characterized in that, in the first invention, the diagonal member is configured to be extendable and contractible in the longitudinal direction.
The third invention of the present application is characterized in that, in the first invention or the second invention, a pedestal that abuts against the other end of the diagonal member is provided on the lower fixture.
According to a fourth invention of the present application, in any one of the first to third inventions, the lower fixture is provided with a gate for restricting the rotation of the diagonal member. .
According to a fifth invention of the present application, in any one of the first to fourth inventions, at least one of the upper mounting tool and the lower mounting tool can be connected to the support column and wedge. It is characterized by being.
A fifth invention of the present application is a method for installing a load receiving stage using the support frame according to any one of the first to fifth inventions, wherein a temporary scaffold is installed at a place where the load receiving stage is to be installed. It includes at least a step of assembling the support frame from the side.

According to the present invention, the following effects can be obtained.
(1) The assembly of the cargo receiving stage is completed by work from the temporary scaffolding side.
Since the support frame that composes the load receiving stage is composed of the upper fixture, beam material, diagonal material, and lower fixture, the assembly of the load receiving stage is completed by work from the temporary scaffolding side. Heavy is not required.
(2) Since the support frame is separated into an upper fixture, a beam member, a diagonal member and a lower fixture, it is disassembled into each member and transported in the lightest possible manner to reduce the burden on workers. Can do.
(3) The handleability of diagonal materials can be improved.
By making the diagonal member extendable and contractible, it is possible to reduce the diagonal member before assembly and improve the handling and transportability of workers.
(4) Stability after assembly can be improved.
By providing either the pedestal or the gate provided in the lower fixture, the stability of the load receiving stage after assembly can be enhanced.

Schematic which shows the whole structure of a support frame. Schematic which shows the connection relation of the upper fixture and beam material with respect to a support | pillar. Schematic which shows the connection relation of a beam material and a diagonal material. Schematic which shows the connection relation of the lower mounting bracket and diagonal with respect to a support | pillar. Schematic which shows the installation method (1) of the cargo receiving stage which concerns on this invention. Schematic which shows the installation method (2) of the cargo receiving stage which concerns on this invention. Schematic which shows the installation method (3) of the cargo receiving stage which concerns on this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

<1> Overall configuration (Fig. 1)
As shown in FIG. 1, the load receiving stage has at least a support frame A that is disposed at a predetermined interval on the temporary scaffold.
In addition, although not shown in FIG. 1, as a member constituting the load receiving stage, a scaffold plate laid between the support frames A, a reinforcing material for improving the stability of the load receiving stage, and a handrail provided around the scaffold plate Although there are frames and the like, in the present invention, these members may be well-known members, and detailed description thereof will be omitted.
Therefore, below, the detail of the support frame A which concerns on this invention is demonstrated.

<2> Support frame (Fig. 1)
The support frame A is a member for constituting a frame of the load receiving stage.
The support frame A has at least an upper fixture 10, a beam member 20, a diagonal member 30, and a lower fixture 40, and has a substantially right triangle shape with the beam member 20 side as an upper surface when viewed from the side when installed on a scaffold. Presents.
Details of each member will be described below.

<3> Upper fixture (Figs. 1 and 2)
The upper fixture 10 is a member that is connected to a support column to connect the upper side of the load receiving stage and the temporary scaffold.
In the present embodiment, the upper fixture 10 is provided on one end side of the base portion 10a to be connected to the support column X, and is provided on the other end side of the base portion 10a to be in contact with the beam member 20. A contact surface 12 for locking, and a locked portion 13 for locking the beam member 20.
Details of each part will be described below.

<3.1> First strut connecting portion (FIG. 2)
The first support column connection part 11 is a part provided with a connection mechanism with the support column X.
A connection mechanism with the support | pillar X is not specifically limited, A well-known connection mechanism is employable.
In the present embodiment, a wedge 111 is provided on one end side of the upper fixture 10, and the wedge 111 is inserted into the attachment hole formed in the flange portion Y that protrudes laterally from the column X, and then from above. By locking the claw that protrudes by the hitting portion to the collar portion Y, both are firmly connected.

<3.2> Contact surface (Fig. 2)
The abutting surface 12 is a part for abutting against one end of the beam member 20 when the support frame A is assembled.
The contact surface 12 can restrict the rotation operation of the beam member 20 relative to the upper fixture 10 (counterclockwise rotation in FIG. 2).
In the present embodiment, the other end side of the upper fixture 10 is constituted by a single pipe having the same diameter as a single pipe used in the beam member 20 described later, so that the beam member 20 and the upper portion can be attached when the support frame A is assembled. It can be considered that the tool 10 is connected to the column X in an integrated manner.

<3.3> Locked part (Fig. 2)
The locked portion 13 is a part for enabling the beam member 20 to rotate with respect to the upper fixture 10 while the beam member 20 is moored to the upper fixture 10.
In this embodiment, the locked portion 13 is constituted by a U-shaped plate 131 provided below the base portion 10a. The U-shaped plate 131 has a U-shaped portion (folded portion 132) facing the beam member 20 side, and is configured so that a locking rod 23 described later can be inserted into the internal release space. ing.
Further, the front side of the U-shaped plate 131 protrudes ahead of the contact surface 12, and the end of the horizontal member 21 to be described later can be supported by the upper surface of the protruding portion.

<4> Beam material (Figs. 1-3)
The beam member 20 is a member for constituting the frame portion of the load receiving stage by being connected to the support column X via the upper fixture 10.
The beam member 20 according to the present embodiment includes a horizontal member 21 for attaching a scaffolding plate and a stiffener member 22 provided below the horizontal member 21 as shown in FIG. It has at least a locking rod 23 for locking and a first diagonal member connecting portion 24 for connecting an oblique member 30 to be described later.
Details of each part will be described below.

<4.1> Horizontal / Stiffener (Figure 1)
Since the horizontal member 21 and the stiffener 22 may use well-known members, detailed description is omitted. In the present invention, the stiffener 22 is not an essential component.

<4.2> Locking rod (Fig. 2)
The locking rod 23 is a member for locking and connecting the beam member 20 to the upper fixture 10.
The locking rod 23 according to this embodiment is provided at one end of the horizontal member 21 and has a substantially L-shaped rod shape that is folded back from the lower portion of the horizontal member 21 in the longitudinal direction of the beam member 20.
By exhibiting such a saddle shape, the beam material 20 (support frame A) can be suspended while the beam material 20 is locked to the upper fixture 10.

<4.2.1> L pin (Fig. 2)
In addition, the locking rod 23 is provided with a communication hole 231 that communicates with the insertion hole 133 provided in the locked portion 13 at the stage of assembling the support frame A, and the insertion hole 133 and the communication hole 231 are connected to each other. By inserting the L pin 232 in between, the connection position of the beam member 20 with respect to the upper fixture 10 can be fixed.

<4.3> First diagonal member connecting portion (FIG. 3)
The first diagonal member connecting portion 24 is a part for connecting the diagonal member 30 to the beam member 20 in a rotatable state.
The first diagonal member connecting portion 24 can use a known mechanism capable of rotatably connecting the diagonal member 30 to the beam member 20.
By providing the first diagonal member connecting portion 24, the support frame A can be configured in a substantially right triangle shape by providing a fixed angle with respect to the beam member 20 when the load receiving stage is assembled.
Further, when the load receiving stage is disassembled, the beam member 20 and the diagonal member 30 can be turned and folded so as to be substantially parallel.
In this embodiment, as shown in FIG. 3, the first diagonal member connecting portion 24 is extended downward from the other end side of the horizontal member 21, and from the vertical member 24a to the inside (the column side). It is comprised with the provided rotation part 24b.

<4.3.1> Longitudinal material (Fig. 3)
The vertical member 24 a is a member for coupling to the other end of the horizontal member 21.
The vertical member 24a joins the other end of the horizontal member 21 by welding or the like.
A tenon 241 for inserting a handrail support column is provided on the upper portion of the vertical member 24a.

<4.3.2> Rotating part (Fig. 3)
The rotating part 24b is a member for detachably connecting the other end of the diagonal member 30.
One end side of the rotating part 24b is fixed to the vertical member 24a.
In this embodiment, as shown in FIG. 3, the rotating portion 24 b is constituted by a U-shaped plate 242, and the vertical member 24 a is formed by the welded portion 243 in a mode in which the vertical member 24 a is sandwiched between the U-shaped plate 242. It is fixed by welding.

<4.3.2.1> Connection mode with diagonal material (FIG. 3)
Moreover, the other end side of the rotation part 24b is comprised so that rotation of the one end of the diagonal 30 is possible in the aspect which can be attached or detached.
As the rotation mechanism, there are a method of pin-connecting with a bolt and a nut through insertion holes 133 respectively formed in the diagonal member 30 and the rotary portion 24b, or a rotation portion with a V pin built in the diagonal member 30 side. For example, there is a method in which a protrusion of a V pin protrudes and is connected to an insertion hole 133 provided in 24b.
In this embodiment, the diagonal member 30 and the rotating portion 24b are rotatably connected by a V pin 321 built in the diagonal member 30 side.
According to the above configuration, the oblique member 30 can be easily attached to and detached from the beam member 20. In addition to improving assembly at the site, it is only necessary to replace the diagonal member 30 when the diagonal member 30 is damaged, and it is not necessary to replace the entire support frame A.

<4.3.2.2> Restriction plate (Fig. 3)
The rotating part 24b may be provided with means for restricting the rotation of the diagonal member 30 at a predetermined angle.
In the present embodiment, a regulating plate 244 is provided below the U-shaped plate 242 so that the plate material is arranged so as to straddle the opening portion below the U-shaped plate 242, and the diagonal member 30 is rotated counterclockwise. The position is restricted by the position of the restriction plate 244.
By this restricting plate 244, the rotation of the diagonal member 30 with the beam member 20 can be restricted at a fixed angle. Even if the diagonal member 30 spills out of the operator's hand, the diagonal member 30 moves downward. It will never be swung down.

<5> Diagonal material (Figs. 1, 3, and 4)
The diagonal member 30 is disposed obliquely upward from the support column X toward the outside of the scaffold, so that the support member X, the beam member 20 and the diagonal member 30 have a substantially right triangle shape, and the other end side of the beam member 20 is disposed on the other end side. It is a member for supporting.
The diagonal member 30 has an expansion / contraction portion 31 for expanding and contracting in the longitudinal direction of the diagonal member 30.
One end side of the diagonal member 30 is rotatably connected to the beam member 20 via a first diagonal member connecting portion 24 provided on the beam member 20.
And the other end side of the diagonal 30 is comprised so that the lower fixture 40 mentioned later may be connected.
Details of each part will be described below.

<5.1> Extendable part (FIG. 1)
The elastic part 31 is a part for adjusting the overall length of the diagonal member 30.
A publicly-known machine tool can be employed for the stretchable part 31.
In the present embodiment, the diagonal member 30 includes an outer tube 32 and an inner tube 33, the inner tube 33 is inserted into the outer tube 32, and the through hole provided in each tube protrudes at a location where it communicates. By providing a fixing mechanism such as the V pin 311 biased in this manner, the entire length of the diagonal member 30 can be defined at a predetermined position.
Therefore, the expansion and contraction mode of the diagonal member 30 can be arbitrarily set by appropriately setting the formation position and number of the through holes.
For example, if the length of the diagonal member 30 is configured so that it can be reduced to the same length as the beam member 20, the length of the diagonal member 30 is equalized when the diagonal member 30 is pulled toward the beam member 20 and folded. Contributes to prevention and improved handling during transportation.

<5.2> End structure on the beam side (Fig. 3)
The one end side of the diagonal member 30 may adopt a structure corresponding to the connection with the first diagonal member connecting portion 24 described above, and detailed description thereof is omitted.
In the present embodiment, a V pin 321 used for connection in the rotating portion 24b is built in the open end side of the outer tube 32 constituting the diagonal member 30.

<5.3> End structure on the lower fixture side (FIG. 4)
The other end side of the diagonal member 30 can adopt a known structure that can be connected to the lower fixture 40.
In this embodiment, a fitting tube 34 having the same diameter as the outer tube 32 is placed on the open end side of the inner tube 33 constituting the diagonal member 30, and both are welded and fixed by a welded portion.
Further, the fitting tube 34 incorporates a V pin 342 used for connection with a lower fixture 40 described later.

<6> Lower fitting (Figs. 1 and 4)
The lower fixture 40 is a member for connecting the other end side of the diagonal member 30 to the column X.
FIG. 2 shows details of the lower fixture 40.
In the present embodiment, the lower fixture 40 has a second column connecting part 41 for connecting the column X and a second diagonal member connecting part 42 for connecting the other end of the diagonal member 30. Configured.
Details of each part will be described below.

<6.1> Second Strut Linking Section The second strut coupling section 41 may adopt the same structure as the first strut coupling section 11 provided in the upper fixture 10 or other publicly known The connection structure may be adopted, and detailed description is omitted.

<6.2> Second Diagonal Material Connection Portion The second diagonal material connection portion 42 can adopt a known connection structure in connection with the diagonal material 30.
In the present embodiment, the diagonal member 30 is sandwiched between the U-shaped plates 421 fitted from below into the base portion 40a of the lower fixture 40, and the V pin 342 incorporated in the other end side (fitting tube 34) of the diagonal member 30. Therefore, both are pin-connected.
As a result, the pin connection position between the diagonal member 30 and the second diagonal member connecting portion 42 is above the lower fixture 40, and the end of the diagonal member 30 is positioned above the lower fixture 40. Become.
By adopting this positional relationship, compared to the case where the diagonal member 30 is connected to the side of the lower fixture 40, it is possible to reduce the load on the connecting portion with respect to the load that the load receiving stage takes.

<6.2.1> Diagonal material positioning member (pedestal / gate)
The second diagonal member connecting part 42 may be provided with a positioning member for fixing the position of the connected diagonal member 30.
In this embodiment, a pedestal 423 provided above the base of the lower fixture 40 and having a contact surface inclined so as to be in surface contact with the tip of the connected diagonal member 30, and the front of the U-shaped plate 421. Two types of positioning members are provided for the gate 424 in which the plate material is arranged so as to straddle the open part on the way of the opening.

<7> How to install the receiving stage (Figs. 5-7)
Hereinafter, a method for installing the load receiving stage using the support frame A will be described with reference to FIGS.

<7.1> Attaching the upper and lower fixtures (FIG. 5 (a))
A plurality of ridges Y are provided on the column X constituting the scaffold Z with predetermined intervals in the vertical direction, and the upper fixture 10 and the lower fixture 40 are attached to the ridges Y.

<7.2> Hanging beam material (Fig. 5 (b))
Next, one end of the beam member 20 is locked to the upper fixture 10.
This locking operation is performed in a state where the longitudinal direction of the beam material is set to a substantially vertical direction.
Since the beam member 20 after locking is in a mode in which the folded portion of the locking rod 23 is supported by the bent portion 132 of the U-shaped plate 13 of the locked portion 13, the beam member 20 is an upper fixture. 10 is moored to the column X via 10.

<7.3> Connection of diagonal materials (FIG. 6A)
Next, the diagonal member 30 is connected to the other end side of the beam member 20.
At this time, it is more advantageous for the diagonal member 30 to be handled in the scaffold Z, which is restricted by the work space, in a contracted state.

<7.4> Diagonal material turning and stretching (FIG. 6B, FIG. 7A)
Next, the diagonal member 30 is turned using the rotation mechanism of the diagonal member 30 and the beam member 20. In conjunction with this turning operation, the beam member 20 stands up so as to make a transition in a substantially horizontal direction from the state of being tilted with respect to the column X.
In parallel with this turning operation, the lock of the stretchable portion 31 of the diagonal member 30 is released and the diagonal member 30 is extended.

<7.5> Connection of diagonal material to lower fitting (FIG. 7B)
After the turning and extending operations of the diagonal member 30 have transitioned to a predetermined state, the other end of the diagonal member 30 and the lower fixture 40 are connected.
The beam member 20 is completely upright with respect to the support column X and is in a state of being directed substantially in the horizontal direction.
At this time, at the position where the contact surface 12 of the upper fixture 10 and one end side of the beam member 20 are in contact with each other, the beam member 20 rotates relative to the upper fixture 10 (counterclockwise rotation in FIG. 7B). ) Will be regulated.
In addition, the other end of the diagonal member 30 connected to the lower fixture 40 is supported by the lower fixture 40 at the connection position with positioning members (base 423, gate 424) provided in the lower fixture 40. The oblique member 30 is not misaligned.

<7.6> Installation of other members (not shown)
After constructing the support frame A with the above <7.1> to <7.5>, a scaffolding plate and a handrail frame are appropriately installed to complete the load receiving stage.

<8> Other Installation Methods Hereinafter, examples of other installation methods will be described.

<8.1> Connection Timing of Lower Mounting Tool In <7.1> of the installation method described above, the upper mounting tool 10 and the lower mounting tool 40 are attached to the support column X in advance, but in the present invention, the lower mounting tool 40 is used. Without connecting the support member X to the support column X, the procedure of connecting the support member X to the support member X after the lower member 40 is attached to the support member X after turning and extending the oblique member 30, A procedure of attaching the lower fixture 40 to the support after connecting the lower fixture 40 to the diagonal member 30 may be adopted.

<8.2> Connection timing of diagonal material In <7.2> of the installation method described above, only the beam material 20 is moored to the upper fixture 10 (post X). You may employ | adopt the procedure of mooring to the upper fixture 10 (support | pillar X) in the state which attached the diagonal material 30, or the state which attached the diagonal material 30 and the lower fixture 40 to the beam material 20. FIG.

A: Support frame 10: Upper fixture 10a: Base part 11: First support pillar connecting part 111: Wedge 12: Abutment surface 13: Locked part 131: U-shaped plate 132: Bent part 133: Insertion hole 20: Beam member 21: Horizontal member 22: Stiffening member 23: Locking rod 231: Communication hole 232: L pin 24: First diagonal member connecting part 24a: Vertical member 24b: Rotating part 241: Hozo 242: U-shaped plate 243: Welded portion 244: Restriction plate 30: Diagonal material 31: Stretchable portion 311: V pin 32: Outer tube 321: V pin 33: Inner tube 34: Fitting tube 341: Welded portion 342: V pin 40: Lower fitting 41: 2nd support | pillar connection part 42: 2nd diagonal material connection part 421: U-shaped plate 422: Welding part 423: Pedestal 424: Gate X: Support | pillar Y: Buttocks Z: Scaffolding

Claims (6)

A support frame for a load receiving stage, which is attached to a column constituting a temporary scaffold and receives a load such as construction materials,
Having at least an upper fixture, a beam, a diagonal and a lower fixture;
The upper fixture and the lower fixture are configured to be attachable to the column,
One end of the beam material is configured to moor and rotate the beam material with respect to the upper fixture,
The other end of the beam material is configured so that one end of the diagonal material can be rotatably connected,
The other end of the diagonal member is configured to be connectable with the lower fixture.
Support frame. The diagonal material is configured to be stretchable in the longitudinal direction,
The support frame according to claim 1. The lower fixture is provided with a pedestal that comes into contact with the other end of the diagonal member,
The support frame according to claim 1 or 2. The lower fixture is provided with a gate for restricting the rotation of the diagonal material,
The support frame according to any one of claims 1 to 3. At least one of the upper fixture and the lower fixture is configured to be able to be wedge-coupled with the support column,
The support frame according to any one of claims 1 to 4. A method for installing a load receiving stage using the support frame according to any one of claims 1 to 5, comprising at least a step of assembling the support frame from a temporary scaffold side at a planned installation location of the load receiving stage. It is characterized by
How to set up the receiving stage.

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