JP2018145712A - Scaffold beam frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scaffold beam frame capable of exerting the function of a connecting pin as required without using the connecting pin as a separate member.SOLUTION: A connecting pin 20 that can be exposed at the upper end side of a support 10 is stored in the support 10 constituting a scaffold beam frame (beam frame A), and a support member D1 of an upper scaffold D provided above the beam frame A is connected via the connection pin 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a scaffolding frame that is installed so as to be bridged between scaffolds on both sides of the opening when the opening is provided in the construction of a temporary scaffold.

As a scaffolding beam frame, the invention described in Patent Document 1 below is known.
The invention described in Patent Document 1 is provided in a beam frame for a scaffold formed by an upper chord member, a lower chord member, and a diagonal member interposed between the upper and lower chord members, provided between the diagonal members of the beam frame. The structure which opened the upper end part of the support | pillar material, and attached the connecting pin for adding the upper scaffolding support | pillar to this opening part so that attachment or detachment is possible is disclosed.
According to this structure, compared with the prior art which welded the connection pin to the beam frame, the connection pin is beneficial in that it is less likely to become a dangerous obstacle for the worker.

Japanese Patent No. 5114292

  However, if the connecting pin is a detachable member as in Patent Document 1, the connecting pin may spill out of the operator's hand during the attaching / detaching operation, and the connecting pin is a small member. There are concerns that it is easy to lose and management of parts becomes difficult.

  Therefore, at least one of the objects of the present invention is to provide a beam frame for a scaffold capable of exhibiting the function of the connecting pin as needed without using the connecting pin as a separate member.

The first invention of the present application, which has been made to solve the above-mentioned problems, is a scaffolding beam frame constructed between scaffolds, and is connected to the inside of a pillar constituting the scaffolding beam frame so as to be exposed at the upper end side of the pillar. A pin is housed, and a support material for a scaffold provided above the beam frame for the scaffold can be connected via a connecting pin exposed from the upper end of the support.
Further, according to a second invention of the present application, in the first invention, the support column has a first through hole in a peripheral wall of the support column, and the connection pin has a second through hole in the peripheral wall of the connection pin. A lock pin having a protrusion biased to the outside of the connection pin is housed in the connection pin, and when the connection pin is exposed, the protrusion of the lock pin is connected to the first through hole and the first By projecting into the two through holes at positions where the two through holes overlap each other, the connecting pin is positioned with respect to the column, and by pressing the protrusion of the lock pin inward, the column with respect to the column It is characterized in that the connection pin can be stored inside the support column by releasing the positioning of the connection pin and moving the connection pin.
In addition, according to a third invention of the present application, in the second invention, the support column further includes a bolt hole in a peripheral wall of the support column, and the connection pin has a length in which the axial direction is a longitudinal direction in the peripheral wall of the connection pin A fastener that can be inserted into the bolt hole and the elongated hole from the outside of the pillar, and restricts the relative movement of the fastener within the elongated hole, thereby providing the fastener with respect to the pillar; The movement of the connecting pin is limited.

According to the present invention, the following effects can be obtained.
(1) The connecting pin can be pulled out as necessary.
By pulling and exposing the connecting pin from the support pillar constituting the scaffold beam frame, the function of the connecting pin can be exhibited as necessary.
(2) There is no risk of loss of connecting pins.
Since the connecting pin can be stored inside the column, there is no risk of the connecting pin being lost or dropped.

The schematic perspective view which shows the installation image of the beam frame for scaffolds which concerns on this invention. The various schematic of the beam frame for scaffolds concerning this invention. The schematic sectional drawing which shows the operation | movement image of the beam frame for scaffolds which concerns on this invention.

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

<1> Overall Configuration FIG. 1 shows an installation image of a beam frame A for scaffolding according to the present invention.
The scaffold beam frame A according to the present invention (hereinafter also simply referred to as “beam frame A”) is provided between the scaffolds C on both sides of the opening B when the opening B is provided in the construction of the temporary scaffold. It is a member installed so as to be bridged over.
The scaffold beam frame A according to the present invention has a structure in which a connecting pin 20 that can be exposed on the upper end side of the support column 10 is housed inside the support column 10 constituting the scaffold beam frame A. A support member D1 of a scaffold (upper scaffold D) provided above the scaffold beam frame A can be connected via a connecting pin 20 exposed from the upper end.
Hereinafter, an example of a structure in which the connecting pin 20 can be exposed and stored will be described with reference to FIGS.

<2> Column The column 10 is a hollow member that functions as a structural member of the beam frame A and also functions as a sheath body of the connecting pin 20.
FIG. 2A is a partial front view showing the connection pin 20 exposed from the support column 10 in the scaffolding frame A according to the present invention, and FIG. FIG. 2C is a schematic diagram viewed from −I, and is a cross-sectional view taken along the line II-II in FIG.

<2.1> First Through Hole As shown in FIG. 2B, the support column 10 is a first through hole that penetrates the peripheral wall of the support column 10 in a direction orthogonal to the axial direction of the support column 10. 11 is provided in two places.

<2.2> Bolt Hole As shown in FIG. 2 (b), the column 10 further penetrates the peripheral wall of the column 10 in a direction orthogonal to the direction of penetration of the first through hole 11 in plan view. Two bolt holes 12 are provided.
The positional relationship between the first through hole 11 and the bolt hole 12 in the axial direction of the column 10 is not particularly limited.

<2.3> Post Upper End Processing As shown in FIG. 2B, in the present invention, when the upper end of the post 10 protrudes from the upper chord material A1 and a scaffold plate or the like is laid above the beam frame A, It is configured so as not to hinder.

<3> Connecting Pin The connecting pin 20 is a hollow member for fixing the upper scaffold D to the beam frame A by being connected to the column 10 of the scaffold (upper scaffold D) installed above the beam frame A. is there.
The connecting pin 20 is formed of a member having an outer diameter that is substantially the same as or smaller than the inner diameter of the column 10.

<3.1> Second Through-hole The connection pin 20 is further provided with two second through-holes 21 penetrating the peripheral wall of the connection pin 20.
As shown in FIG. 2 (b), the second through holes 21 formed in the connecting pin 20 overlap the first through holes 11 formed in the support columns 10, respectively, and each through hole communicates. Yes.

<3.2> Long Hole As shown in FIG. 2C, the connecting pin 20 further has two long holes 22 provided therein.
The long hole 22 penetrates the peripheral wall of the connecting pin 20 in a direction orthogonal to the penetrating direction of the first through hole 11 in plan view, and has a predetermined length in the axial direction of the connecting pin 20.
The positional relationship between the second through hole 21 and the long hole 22 in the axial direction of the support column 10 is not particularly limited.

<3.3> Connection Mode with Upper Scaffold A known lock mechanism that locks both ends when inserted into the column material D1 of the upper scaffold D can be provided at the tip portion of the connection pin 20. Needless to say, the locking mechanism should not prevent the storing operation of the connecting pin 20 to be described later into the column 10.

<4> Lock Pin The lock pin 30 is a member for positioning the both so that the connection pin 20 is exposed to the support column 10.
The lock pin 30 includes a leaf spring 31 having a size that can be accommodated inside the connecting pin 20, and two protrusions 32 that protrude outward from both ends of the leaf spring 31.

<4.1> Leaf Spring The leaf spring 31 is made of a plate material bent in a substantially U-shape, and when the U-shaped opening is pressed in the direction of narrowing, the opening spring will be restored in the expanding direction. It is a member that exhibits the elastic force.

<4.2> Protrusion The protrusion 32 is a member formed so as to protrude outward from both ends of the leaf spring 31.
The protrusion 32 is urged outward by the elastic force of the leaf spring 31 so as to maintain the state of being inserted into the second through hole 21 provided in the connecting pin 20.

<5> Fastener The fastener 40 is a member for connecting the connection pin 20 to the column 10 in a slidable and non-separable manner.

<5.1> Bolt / Nut In this embodiment, the fastener 40 includes a bolt 41 having a thread portion longer than the diameter of the column 10 and a nut 42 that can be screwed onto the bolt 41.
The bolt 41 is inserted from the one bolt hole 12 of the support column 10 through the two elongated holes 22 of the connecting pin 20 and the other bolt hole 12 of the support column 10 in order, and is exposed from the other bolt hole 12. By screwing the tip portion with a nut 42, the connection pin 20 is connected to the support column 10 so as not to be separated.
With the above configuration, the connecting pin 20 can be moved relative to the support column 10 in the axial direction by the length of the long hole 22 of the connecting pin 20.

<6> Operational Image An operational image of the connecting pin 20 in the scaffold beam frame A according to the present invention will be described with reference to FIG.

<6.1> Exposed state of connecting pin (FIG. 3A)
FIG. 3A shows a state where the connecting pin 20 is exposed and locked to the support column 10.
The protrusion 32 of the lock pin 30 housed inside the connecting pin 20 is urged outward by a leaf spring 31, and the first through hole 11 provided in the support column 10 and the second provided in the connecting pin 20. At the position where the through-holes 21 overlap, the state where the protrusions 32 are inserted into both through-holes is maintained, and the connecting pin 20 is positioned on the support column 10.

The upper scaffold D can be installed above the beam frame A by inserting the column material D1 of the upper scaffold D into the connection pin 20 in a state where the connection pin 20 is locked to the column 10.
At this time, the bolt 41 is in a state of being located on the lower edge side of the long hole 22 of the connecting pin 20.

<6.2> Release of lock pin / movement of connecting pin (FIG. 3B)
When it is desired to avoid the state in which the connecting pin 20 is exposed from the column 10 such as when the beam frame A is installed or disassembled, an operation of storing the connecting pin 20 in the column 10 is performed.
First, the protrusion 32 of the lock pin 30 is pushed inward to release the locked state between the protrusion 32 and the first through hole 11 of the support column 10.
By releasing the locked state, the connecting pin 20 can move between the support column 10 and the connecting pin 20 is gradually stored in the support column 10 by pressing the tip of the connecting pin 20. Can do.
The moving length of the connecting pin 20 corresponds to the sliding length of the bolt 41 that slides in the long hole 22 of the connecting pin 20.
The protrusion 32 of the lock pin 30 only contacts the inner wall of the column 10 and does not hinder sliding.
Further, since the bolt 41 is limited to sliding in the elongated hole 22, the connecting pin 20 does not rotate in the support column 10.

<6.3> Completion of storage of connecting pin (FIG. 3C)
As the movement of the connecting pin 20 proceeds, the bolt 41 reaches the upper edge side of the long hole 22 of the connecting pin 20 and the movement of the connecting pin 20 is blocked.
In this state, the storing operation of the connecting pin 20 to the support column 10 is completed.

<6.4> Pulling out connecting pin (FIGS. 3C to 3A)
When it is desired to expose the connecting pin 20 from the support column 10 when starting the connecting work of the upper scaffold D, the connecting pin 20 is pulled out by pulling the tip of the connecting pin 20.
At this time, when the bolt 41 is pulled out to a state where the bolt 41 is positioned on the lower edge side of the long hole 22 of the connecting pin 20, the projection 32 of the lock pin 30 is again connected to the first through hole 11 and the second through hole. The state where the through holes 21 are overlapped with each other is maintained, and the connecting pin 20 is positioned with respect to the support column 10.

<7> Summary As described above, according to the beam frame for a scaffold according to the present invention, the connection pin can be pulled out as necessary, and there is no fear that the connection pin is lost or dropped when the scaffold is installed or disassembled.
In addition, since the movement of the connecting pin is limited in the axial direction, the positioning of the column and the connecting pin by the protrusion of the lock pin is not hindered by the rotation of the connecting pin.

A Beam frame B Opening C Scaffold D Upper scaffold D1 Strut material 10 Strut 11 First through hole 12 Bolt hole 20 Connecting pin 21 Second through hole 22 Long hole 30 Lock pin 31 Leaf spring 32 Protrusion 40 Fastener 41 Bolt 42 Nut A1 Upper chord material

Claims (3)

A beam frame for scaffolding constructed between scaffolds,
A connecting pin that can be exposed on the upper end side of the column is housed inside the column constituting the beam frame for the scaffold,
Through the connecting pin exposed from the upper end of the support column, it is possible to connect the support material of the scaffold provided above the beam frame for the scaffold,
Scaffold beam frame. The support column has a first through hole in a peripheral wall of the support column,
The connecting pin has a second through hole in the peripheral wall of the connecting pin,
The connection pin contains a lock pin having a protrusion biased to the outside of the connection pin,
When the connection pin is exposed, the protrusion of the lock pin protrudes into the through holes at a position where the first through hole and the second through hole overlap with each other, so that the connection pin is attached to the support column. Positioning
By pressing the protrusion of the lock pin inward, the positioning of the connection pin with respect to the support column is released, and the connection pin is moved, so that the connection pin can be stored inside the support column. Features
The scaffold beam frame according to claim 1. The support column further includes a bolt hole in the peripheral wall of the support column,
The connecting pin further has a long hole in the peripheral wall of the connecting pin whose longitudinal direction is the axial direction,
A fastener that can be inserted into the bolt hole and the elongated hole from the outside of the support column is provided,
By restricting the relative movement of the fastener within the elongated hole, the movement of the connecting pin with respect to the column is limited,
The scaffolding beam frame according to claim 2.

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