JP6574152B2 - Connecting material for temporary scaffold and method for constructing temporary scaffold - Google Patents

Description

  The present invention relates to a tie material that is a constituent member of a temporary scaffold and has a variable overall length in the longitudinal direction, and particularly relates to a tie material suitable for use in a curved scaffold.

If the total length of the connecting material that spans the struts constituting the temporary scaffolding can be changed to an arbitrary length, the application becomes wide.
For example, when it is used for a curved scaffold such as a circular scaffold or a scaffold having a curved portion, it is beneficial to be able to change the total length of the connecting material in accordance with the curvature.
As such a connecting material, there are inventions described in the following patent documents.
In Patent Document 1, hook portions are provided at both ends, and can be expanded and contracted in the axial direction with the configuration of the outer tube and the inner tube, and the insertion holes provided in the outer tube and the inner tube are in communication with each other. A scaffolding lateral frame is disclosed in which both can be fixed by inserting a fixing pin and the overall length can be adjusted.
Further, in Non-Patent Document 1, a curve-corresponding formula is provided with hook portions that can be swung at both ends of an expandable tube material, and wedges that are driven downward from above to determine the expansion / contraction position of the tube material. A fabric material is disclosed.

JP 2000-160828 A

"SUGIKO temporary equipment manual editon 15 p.70" Alphatros curve compatible product inside: Cloth material for Albatros curve "" http://www.sugiko.co.jp/sugiko_catalog/top.html

However, the above-described conventional invention has at least one of the following problems.
(1) The fixing method by another member is complicated.
Since the scaffolding horizontal frame described in Patent Document 1 has a separate fixing pin for determining the length, the management of the member becomes complicated.
(2) Poor transportability.
The cloth material described in Non-Patent Document 1 has a wedge for determining the length protruding to the side of the pipe material so as to deviate from the extending direction of the hook portion provided on the extending side of the connecting portion. Therefore, when a plurality of cloth materials are transported, the hook portions easily interfere with the adjacent cloth materials and cannot be bundled in a compact manner.
(3) It becomes an obstacle to the advance construction of the scaffold.
Both of the scaffolding horizontal frame described in Patent Document 1 and the cloth material described in Non-Patent Document 1 are such that an operator leans over from the upper side of the installation location to the upper side of the connecting material, and inserts a fixing pin or wedges. Must be driven in.
If it does so, it will be necessary, and the significance of the type of scaffolding in which the handrails and connecting materials from the lower layer to the upper layer part are constructed in advance to ensure the safety of workers will be lost.

  As described above, an object of the present invention is to provide a highly convenient connecting material and a construction method with excellent workability in the construction of a temporary scaffold.

The first invention of the present application, which has been made to solve the above-mentioned problems, is a connecting material to be attached between struts constituting a temporary scaffold, and includes a male pipe including at least an inner pipe, and the inner pipe is slidable in the axial direction. A main body portion, and a hook that extends downward from the open end of the main body portion and engages with a flange provided on the support column by driving down the wedge , A connecting portion; and a fixing portion that is provided below the female tube and located in an extra space sandwiched between the extending portions of the connecting portion provided at both ends of the main body portion when viewed from the front. The inner tube is provided with a recess in the longitudinal direction, and the fixing portion always protrudes into the interior of the female tube through a through hole provided in the side wall of the female tube, and is accommodated in the recess. An interference body that prevents the male pipe from coming out of the female pipe; By implanting into the male pipe side from the female pipe side an axial direction of the main body, increasing the protruding length of the interference member, presses and fixes the inner pipe with by the interference member, and the wedge member, It is characterized by including at least.
The second invention of the present application is characterized in that, in the first invention, the connection portion is rotatable about a vertical axis with respect to the main body portion.
Further, the third invention of the present application is a method for constructing a temporary scaffold using the connecting material according to the first invention or the second invention, and when installing the connecting material of the upper layer part from the lower layer part in advance, At least a step of attaching the connecting material between the columns in a state where the fixing portion is loosened, and a step of determining the length of the connecting material by driving a wedge body of the fixing portion from a lower layer portion. It is characterized by that.

According to the present invention, at least one of the effects described below is achieved.
(1) It is not necessary to manage separate members.
Since the wedges for determining the length are attached so as not to come out of the connecting material, the management of the members is not complicated.
(2) It does not become an obstacle when putting together multiple connecting materials.
By providing the fixing portion according to the present embodiment on the extending side of the connecting portion and setting the driving direction of the wedge body to the axial direction of the main body portion, the wedge body is almost hidden from the main body portion in plan view. . Therefore, when a plurality of connecting materials are gathered, the fixing portion hardly interferes with other connecting materials, and the transportability is not lowered.
(3) Work can be performed safely.
Since the connecting member according to the present embodiment is provided with the fixing portion on the extending side of the connecting portion, it is easy to perform the operation of driving the wedge body from the lower layer by the worker.
Therefore, it is not necessary to work on the upper layer where the leading handrail and the connecting material are insufficiently installed. In addition, by setting the wedge body driving direction to the axial direction of the main body portion, the worker in the lower layer only needs to drive a hammer or the like in the axial direction (horizontal direction) of the main body portion and is above the operator's head. Work on the fixed part can also be performed in a natural posture.
(4) It can be used in a wide range of applications.
By making the connecting portion pivotable about the vertical axis with respect to the main body, it is possible to use the curved scaffold or the linear scaffold with different curvatures.

The schematic front view which shows the joining material which concerns on this invention. The schematic plan view of a connection part periphery. Schematic showing the structure around the fixed part The schematic front view at the time of shrinking the connecting material which concerns on FIG. Explanatory drawing which concerns on the construction procedure of the temporary scaffold using the joining material which concerns on this invention. Schematic which shows the conveyance state of the connection material which concerns on this invention.

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

<1> Overall configuration (Fig. 1)
FIG. 1 shows a connecting material according to the present invention.
The connecting material according to the present invention includes a main body portion 10 made of a set of pipe materials, a connection portion 20 provided at an open end of the main body portion and connectable to the support column, and a fixed length of the set of pipe materials. And at least a fixing portion 30 to be operated.
Details of each part will be described below.

<2> Main body portion The main body portion 10 is a member that forms a transition portion between the support columns.
In the present embodiment, the main body portion 10 is constituted by a set of pipe materials that are combined in a freely stretchable manner.
And this one set of pipe material consists of the male pipe 11 equivalent to the male side in the mutual combination, and the female pipe 12 equivalent to the female side.
Details of each pipe will be described below.

<2.1> Male Pipe The male pipe 11 is a member for making the entire length of the main body portion variable by configuring the inside of the female pipe 12 to be slidable.
In this embodiment, the male tube 11 has a diameter that can be inserted into the female tube 12. The outer tube 112 has an inner tube 111 and one end connected to the inner tube 111 and the other end connected to the connecting portion 20. And is composed of.

<2.1.1> Recessed portion A recessed portion 1111 that is recessed inward in the longitudinal direction of the inner tube 111 is formed below the inner tube 111.
The recess 1111 has a width that allows an interference body 32 of the fixing unit 30 described later to be accommodated.
The hollow portion 1111 eliminates interference of the interference body 32 of the fixing portion 30 (to be described later) with the inner tube 111 when adjusting the overall length of the set of pipes, and also from the female tube 12 to the male tube 11 (inner tube 111). It prevents slipping out and functions as a pressing portion of the interference body 32 when the total length of a set of pipe materials is determined.

<2.2> Female Pipe The female pipe 12 is a member for making the entire length of the main body 10 variable by configuring the male pipe 11 to be slidable inside the female pipe 12.
Referring to FIG. 1, in this embodiment, the female tube 12 is constituted by a tube material that can accommodate the inner tube 111 in the male tube 11. That is, the inner diameter of the female tube 12 is slightly larger than the outer diameter of the inner tube 111.
One end of the female tube 12 is opened, and the inner tube 111 is accommodated from the opening. Further, a connecting portion 20 described later is provided at the other end of the female tube 12.

<2.2.1> Through-hole A through-hole 121 that penetrates the side wall is formed in the lower portion near one end of the female tube 12. The through hole 121 serves as an entrance / exit of the protrusion 31 described later.

<3> Connection Part The connection part 20 is a member that is provided at both open ends of the main body part 10 and is detachably attached to a flange provided on the support column.
A well-known mechanism can be used for the attachment / detachment mechanism to the support column.
In the present embodiment, the connecting portion 20 includes a hook that is inserted into the flange of the column and then locked to the flange by driving in the wedge, thereby using a mechanism that prevents the separation from the column.

<3.1> Rotating mechanism (Fig. 2)
As shown in FIG. 2, the connecting member according to the present embodiment is a bolt so that the connecting portion 20 can be rotated around the vertical axis with respect to the main body portion 10, that is, around the axial direction of the support column at the time of installation. A mechanism that can be connected and positioned at a predetermined turning angle by fastening the bolt is provided.
According to this configuration, it is possible to combine the curved scaffold with a different site or a linear scaffold.
In addition, the aspect fixed to the main-body part 10 at a fixed angle may be sufficient as the connection part 20 which concerns on this invention in the form which abbreviate | omitted the above-mentioned rotation mechanism.

<4> Fixed part (Fig. 3)
The fixing portion 30 is a member for determining the length of the main body portion 10 and for preventing separation of a set of pipe materials constituting the main body portion 10.
Please refer to FIG. FIG. 3A is an enlarged schematic view around the fixed portion, and FIG. 3B is a cross-sectional view taken along the line II in FIG.
In the present embodiment, the protrusion 30 of the interference body 31 can be adjusted by setting the fixing portion 30 as an interference body 31 that can freely enter and exit through a through hole 121 provided in the tube material of the female tube 12 and the axial direction of the main body portion 10 as the driving direction. The wedge body 32 and the housing 33 that accommodates the interference body 31 and the wedge body 32 therein are configured.

<4.1> Housing The housing 33 is a U-shaped member that is disposed so as to cover the through-hole 121 of the tube material of the female tube 12 and that opens at the top, and exposes the wedge body 32 from both sides. The shape which can be accommodated is exhibited.

<4.2> Wedge Body The wedge body 32 is accommodated in the housing 33 so as to be movable in the horizontal direction, and the interfering body 31 can be moved up and down by this lateral movement.
At the tip of the wedge body 32, a rivet or other slip-out preventing portion is provided to prevent the housing 33 from slipping out from the side.

<4.3> Interference body The interference body 31 is accommodated and arranged on the upper part of the wedge body 32, and the interference body 32 is always partially protruded into the pipe material while the wedge body 32 is driven in. The protrusion length from the through-hole 121 can be adjusted by moving up and down by the releasing operation.

<4.4> Manufacturing Method of Fixing Part The manufacturing method of the fixing part 30 is, for example, when the slip-out prevention part of the wedge body 32 is a detachable type, after the housing is joined to the female tube, the interference body 31 The wedge body 32 can be housed in the casing in order, and finally, the wedge body 32 can be manufactured so as to form a slip-out preventing portion.
In addition, when the wedge body 32 is an integral type, the wedge body 32 and the interference body 31 may be accommodated from the opening of the housing 33, and then the housing may be joined to the female tube. .

<4.5> Driving direction of wedge body The wedge body 32 according to the present embodiment sets the axial direction of the main body portion 10 as the driving direction, for the following reason.
(1) For example, if the wedge body 32 is configured to be driven in from the bottom to the top, there is a concern that the wedge body 32 may be easily removed due to the weight of the wedge body 32 or the like. In this respect, since the wedge body 32 according to the present embodiment is driven in the horizontal direction, the wedge body does not fall off due to its own weight or the like, and the fixing effect by the wedge body 32 can be maintained.
(2) Furthermore, for example, when the wedge body 32 is viewed in a horizontal direction perpendicular to the axial direction of the main body portion, a portion of the wedge body 32 protrudes from the main body portion in a plan view, and this protruding portion However, there is a possibility that it becomes an interference part when a plurality of connecting materials are gathered.
However, the wedge body 32 according to the present embodiment utilizes the extra space of the portion projecting downward by the connecting portions 20 provided at both ends of the main body portion 10, and the wedge body 32 is formed on the main body portion 10 in a plan view. Since it is in a substantially hidden state, when a plurality of connecting materials are combined, it greatly interferes with the work of arranging the connecting portion 20 of the other connecting material on the connecting portion 20 of one connecting material. There is nothing.

<5> Function and action (Fig. 4)
Next, the function / action of the connecting material will be described.
[When releasing wedge]
First, when the driving operation of the wedge body 32 is released, the male tube 11 is slidable with respect to the female tube 12.
Therefore, as shown from the longest time shown in FIG. 1 to the shortest time shown in FIG. 4, the total length of the connecting material can be arbitrarily changed.
[When wedge is driven]
By driving the wedge body 32 of the fixing portion 30, the interference body 32 is further protruded, and the interference body 32 presses the inner tube 111 of the male tube 11, thereby fixing the male tube 11 to the female tube 12 and connecting material. The length of can be determined.

<6> Procedure for using temporary scaffolding (Figure 5)
An example of a procedure for constructing a temporary scaffold using the connecting material according to the present embodiment will be described with reference to FIG. In addition, these procedures can be carried out by appropriately changing the order as long as there is no contradiction in the work and the safety can be ensured.
(S100) The jack base A is installed at a predetermined interval.
(S110) The column B is connected to the jack base A.
(S120) The connecting material C according to this embodiment is disposed between the columns B.
(S130) The height of each support B is adjusted with the jack base A so that the connecting material C is horizontal, and the connecting material C is wedge-fixed to the support B.
(S140) The preceding handrail D is installed between the columns B.
(S150) The upper connecting material C and the leading handrail D are installed from the lower layer. At this time, the connecting material is attached between the columns with the fixing portion loosened, and then the wedge body of the fixing portion is driven from the lower layer portion to determine the length of the connecting material.
(S160) The upper-layer cloth board E and the baseboard F are installed from the lower layer.
(S170) From the lower layer, stairs and stair railings connected to the upper layer are installed.
(S180) The worker moves to the upper layer.
(S190) A new support B is connected to the installed support B.
Thus, the work scaffold is constructed upward by repeating the steps (S120) to (S190).

In the process of (S150), since the connecting material according to the present embodiment is provided with the fixing portion 30 on the extending side of the connecting portion 20, that is, on the lower layer side, the operator performs the operation of driving the wedge body 32 from the lower layer. It is beneficial in that it is easy to implement.
In addition, since the wedge body 32 is driven in the axial direction of the main body 10, the worker only needs to drive a hammer or the like in the axial direction (horizontal direction) of the main body 10, and is fixed on the worker's head. The driving operation into the unit 10 can also be performed in a natural posture.

<7> Packing state The outline | summary at the time of packing and conveying the connection material which concerns on this invention is demonstrated.
Before the scaffolding is installed or after dismantling and removal, multiple connecting materials may be bundled and packed together.
At this time, according to the joining material according to the present embodiment, the fixing portion 30 is provided on the extending side of the connecting portion 20 and the wedge body 32 is driven in the axial direction of the main body portion 10 in plan view. As a result, the wedge body 32 is substantially hidden from the main body portion 10, so that no overhanging portion is generated from the main body portion 10.
Therefore, when bundling a plurality of connecting materials together, it is difficult for the fixing portion 30 of one connecting material to interfere with the main body portion 10 of the other connecting material, and maintain the same transportability as a normal connecting material. Can do.

DESCRIPTION OF SYMBOLS 10 Main-body part 11 Male pipe 111 Inner pipe | tube 1111 Recessed part 12 Female pipe 121 Through-hole 20 Connection part 30 Fixing part 31 Interference body 32 Wedge body 33 Housing | casing A Jack base B Support | pillar C Connecting material D Prior handrail E Cloth board F Width wood

Claims (3)

It is a connecting material attached between the struts constituting the temporary scaffold,
A main body configured by a male pipe including at least an inner pipe and a female pipe that slidably accommodates the inner pipe in the axial direction;
A connecting portion that includes a hook that extends downward from the open end of the main body portion and engages with a flange provided on the column by wedge driving downward ;
A fixing portion located below the female tube and located in an extra space sandwiched between the extending portions of the connecting portion provided at both ends of the main body portion in front view ;
Having at least
The inner pipe is provided with a depression in the longitudinal direction,
The fixing part is
An interference body that always protrudes into the female tube through a through-hole provided in a side wall of the female tube, and prevents the male tube from coming out of the female tube by being accommodated in the recess,
A wedge body that increases the protruding length of the interference body by driving from the female tube side to the male tube side in the axial direction of the main body portion, and presses and fixes the inner tube with the interference body;
Including at least
Tie material.   The connecting member according to claim 1, wherein the connecting portion is rotatable about a vertical axis with respect to the main body portion. A construction method of a temporary scaffold using the tie material according to claim 1 or 2,
When installing the connecting material from the lower layer to the upper layer in advance,
In the state where the fixing part is loosened, the step of attaching the connecting material between the columns;
Then, driving the wedge body of the fixed portion from the lower layer portion, and determining the length of the connecting material,
Including at least
How to build a temporary scaffold.