JP3340286B2 - Pipe connection structure for construction scaffold - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connecting structure for a construction scaffold for connecting a vertical pipe and a horizontal pipe in a construction scaffold.

[0002]

2. Description of the Related Art As a conventional connecting structure of pipes in this type of construction scaffold, a structure as disclosed in Japanese Utility Model Publication No. 1-1137 is known. In this conventional connection structure, a planar U-shaped bracket is fixed to the outer peripheral surface of the vertical pipe. A front U-shaped mounting bracket having a pair of upper and lower mounting pieces is fixed to an end of the horizontal pipe, and wedge holes are formed in both mounting pieces of the mounting metal.

[0003] When connecting the horizontal pipe to the vertical pipe, the mounting bracket is engaged with the bracket so that the intermediate wall of the mounting bracket is joined to the outer surface of the intermediate wall of the bracket. A wedge-shaped member is inserted from the wedge hole into the bracket through the wedge hole of the lower mounting piece. This allows
An intermediate wall of the bracket is sandwiched between the mounting bracket and the wedge-shaped member, the mounting bracket and the bracket are connected, and the horizontal pipe and the vertical pipe are connected.

In this conventional connecting structure, a concave groove is formed on the upper end edge of the intermediate wall of the bracket, and a step is formed on the side edge of the wedge-shaped member so as to correspond to the concave groove. I have. Then, when the wedge-shaped member is inserted into the wedge holes of both mounting pieces and the bracket, the step on the wedge-shaped member engages with the concave groove of the bracket, and the relative lateral vibration between the mounting bracket and the bracket is reduced. Be regulated.

[0005]

However, in this conventional pipe connection structure, the distal end edges of both mounting pieces of the mounting bracket and the outer peripheral surface of the vertical pipe are connected in a state where the horizontal pipe and the vertical pipe are connected. A gap is formed between them. That is, the mounting bracket and the bracket are connected only by the intermediate wall of the bracket being sandwiched between the mounting bracket and the wedge-shaped member. For this reason,
Unless the structure of the bracket and the structure for fixing the bracket to the vertical pipe are made sturdy, there is a problem that the horizontal pipe and the vertical pipe cannot be firmly connected without any relative movement.

Further, in this conventional pipe connection structure, the engagement between the concave groove formed partially on the upper end edge of the intermediate wall of the bracket and the step formed on the side edge of the wedge-shaped member. Thereby, relative lateral deflection between the mounting bracket and the bracket is regulated. For this reason, there has been a problem that relative lateral deflection between the mounting bracket and the bracket cannot be reliably controlled.

The present invention has been made by paying attention to such problems existing in the prior art. The purpose is to provide a construction scaffold that can firmly connect the horizontal pipe and the vertical pipe without relatively moving the bracket structure and its fixing structure to the vertical pipe without causing relative movement. An object of the present invention is to provide a pipe connection structure.

Another object of the present invention is to
An object of the present invention is to provide a pipe connecting structure in a construction scaffold capable of reliably restricting relative lateral deflection between a mounting bracket and a bracket in a connected state between a horizontal pipe and a vertical pipe.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a pipe connecting structure for a construction scaffold, wherein a flat U-shaped bracket is provided on an outer peripheral surface of a vertical pipe. Is fixed to the end of the horizontal pipe, and a front-sided substantially U-shaped mounting bracket having a pair of upper and lower mounting pieces is formed, and wedge holes are formed in both mounting pieces of the mounting metal. The leading edges of both mounting pieces are formed in arc-shaped recesses so that the leading edges of the pieces are joined to the outer peripheral surface of the vertical pipe, and the bracket is locked from the wedge hole of the upper mounting piece while the mounting bracket is locked to the bracket. The wedge-shaped member is inserted into the wedge hole of the lower mounting piece through the inside, and the side edge corresponding to the vertical pipe of the wedge-shaped member is engaged with both wedge holes, and the opposite side edge is engaged with the inner surface of the intermediate wall of the bracket. by, foot building that connects the mounting bracket and the bracket Consolidated structure smell of pipe in
At least wide portions are formed on both side surfaces of the wedge-shaped member.
Inner surfaces of both sides of the upper wedge hole made and both sides of the bracket
Engage almost the entire length of the inner surface of the wall, and
In this case, a restricting portion for restricting the lateral deflection relative to the cutout is formed .

[0010]

Therefore, in the pipe connecting structure according to the first aspect, when the horizontal pipe is connected to the vertical pipe,
The mounting bracket is locked to the bracket such that the leading edges of both mounting pieces are joined to the outer peripheral surface of the vertical pipe. In this state,
When the wedge-shaped member is inserted from the wedge hole of the upper mounting piece through the bracket into the wedge hole of the lower mounting piece, the side edges corresponding to the vertical pipe of the wedge-shaped member are engaged with both wedge holes,
The opposite side edge is engaged with the inner surface of the intermediate wall of the bracket. Thus, the mounting bracket and the bracket are connected, and the end of the horizontal pipe is connected to the vertical pipe.

In the connection state of the two pipes, no gap is formed between the distal ends of the two mounting pieces of the mounting bracket and the outer peripheral surface of the vertical pipe, and the distal edges of the two mounting pieces are connected to the outer circumference of the vertical pipe. It is joined to the surface. For this reason, the horizontal pipe and the vertical pipe can be firmly connected without any relative movement, without making the structure of the bracket and its fixing structure for the vertical pipe particularly strong.

Further, when the wedge-shaped member is inserted into the wedge hole and the bracket two mounting pieces, regulating portions formed at both sides of the wedge-shaped member, each side of the upper wedge holes least the wide portion is formed The inner surface and the inner surfaces of both side walls of the bracket are engaged over substantially the entire length. For this reason, in the connected state of the horizontal pipe and the vertical pipe, the relative lateral deflection between the mounting bracket and the bracket can be reliably restricted by the wide portion of the wedge hole .

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, one embodiment of the present invention will be described.
This will be described in detail with reference to the drawings. As shown in FIG. 2, the plurality of vertical pipes 11 on the construction scaffold are erected at predetermined intervals, and four brackets 12 are fixed to a plurality of upper and lower locations on the outer periphery thereof. Multiple horizontal pipes 13
Are wedge-shaped members 15 from the mounting bracket 14 to the bracket 12 in a state where the mounting brackets 14 at both ends are locked to the bracket 12.
Are inserted and connected between the adjacent vertical pipes 11.

The connecting structure of the horizontal pipe 13 to the vertical pipe 11 will now be described. As shown in FIGS. 1 to 5, each bracket 12 includes an intermediate wall 12a and both side walls 1a.
2b so as to have a substantially U-shaped planar shape. The pair of fixing pieces 12c are bent at the edges of both side walls 12b, and these fixing pieces 12c are welded to the outer peripheral surface of the vertical pipe 11 so that the four brackets 12 It is fixed at equal intervals. In the fixed state of the bracket 12, the intermediate wall 12a is inclined from the upper end to the lower end so as to gradually approach the axis side of the vertical pipe 11.

The mounting bracket 14 is formed in a substantially U-shape front view so as to have an intermediate wall 14a and a pair of upper and lower mounting pieces 14b and 14c. The end of the horizontal pipe 13 is formed on the outer surface of the intermediate wall 14a. Fixed by welding. The through hole 16 is formed in the intermediate wall 14a, and the inside of the horizontal pipe 13 is
It is open outward on both sides through. Then, in a state where the mounting brackets 14 are welded and fixed to both ends of the horizontal pipe 13, when zinc plating is performed on them, the molten zinc that has entered the inside of the horizontal pipe 13 is discharged to the outside through the through holes 16. It has become.

The wedge holes 17, 18 are formed in both mounting pieces 14b, 14c of the mounting bracket 14, the upper wedge hole 17 is formed narrower than the lower wedge hole 18, and the upper wedge hole 17 is formed. Is formed with a wide portion 17a in the center of the. The arc-shaped concave portion 19 is formed at the distal end edge of both mounting pieces 14b and 14c, and as shown in FIGS.
Are locked to the bracket 12, these recesses 19
, The leading edges of both mounting pieces 14b and 14c are joined to the outer peripheral surface of the vertical pipe 11.

The wedge-shaped member 15 passes through the bracket 12 from the wedge hole 17 of the upper mounting piece 14b while the mounting bracket 14 is locked to the bracket 12, and the lower mounting piece 14c
And is formed so as to become gradually narrower from the upper end to the lower end. When the wedge-shaped member 15 is inserted, the side edge 15a of the wedge-shaped member 15 corresponding to the vertical pipe 11 is engaged with the two wedge holes 17 and 18, and the opposite side edge 15b is connected to the intermediate wall 12 of the bracket 12.
a, the mounting bracket 14 and the bracket 12
Are linked.

The restricting portion 20 is provided on the side edge 15 of the wedge-shaped member 15.
The wedge-shaped member 15 is formed so as to protrude on both side surfaces thereof so as to extend along the line b. When the wedge-shaped member 15 is inserted into the wedge holes 17, 18 of the mounting bracket 14 and the bracket 12,
Are engaged over substantially the entire length of the inner surface of both sides of the wide portion 17a in the upper wedge hole 17 and the inner surfaces of the side walls 12b of the bracket 12. As a result, relative lateral deflection between the mounting bracket 14 and the bracket 12 is restricted.

The stop pin 22 is fixedly penetrated to the lower end of the wedge-shaped member 15, and has an engagement head 22a formed at one end thereof with a diameter larger than the wide portion 17a of the upper wedge hole 17. Then, as shown by a chain line in FIG.
When 5 is pulled upward from the wedge holes 17 and 18 of the mounting bracket 14, the engaging head 22a of the stop pin 22 is engaged with the wide portion 17a of the upper wedge hole 17 from below. As a result, the wedge-shaped member 15 is retained and held against the mounting bracket 14.

Next, the operation of the pipe connecting structure in the construction scaffold constructed as described above will be described. Now, in this pipe connection structure, when connecting the horizontal pipe 13 to the vertical pipe 11, as shown by a chain line in FIG. Place along.

Then, the concave portions 19 at the distal end edges of the mounting pieces 14b and 14c are joined to the outer peripheral surface of the vertical pipe 11 so that
The mounting bracket 14 is locked to the bracket 12. In this state, the bracket 12 is inserted through the wedge hole 17 of the upper mounting piece 14b.
The wedge-shaped member 1 is inserted into the wedge hole 18 of the lower mounting piece 14c.
5 is inserted. Then, as shown in FIGS. 1, 3 and 4, the side edge 15a of the wedge-shaped member 15 corresponding to the vertical pipe 11 is formed.
Are engaged with the two wedge holes 17 and 18, and the opposite side edge 15 b is engaged with the inner surface of the intermediate wall 12 a of the bracket 12. As a result, the fitting 14 and the bracket 12 are connected, and the end of the horizontal pipe 13 is connected to the vertical pipe 11.

As described above, this embodiment has the following advantages. (1) When the two pipes 11 and 13 are connected to each other, no gap is formed between the distal end edges of the two mounting pieces 14 b and 14 c of the mounting bracket 14 and the outer peripheral surface of the vertical pipe 11. The recesses 19 at the tip edges of 14b and 14c are
1 is joined to the outer peripheral surface. Therefore, the bracket 12
The horizontal pipe 13 and the vertical pipe 11 can be firmly connected without any relative movement, without making the structure described above and its fixing structure for the vertical pipe 11 particularly strong. (2) As shown in FIGS. 3 and 5, when the wedge-shaped member 15 is inserted into both the wedge holes 17, 18 and the bracket 12,
The restricting portions 20 on both side surfaces of the wedge-shaped member 15
And the inner surface of both sides of the wide portion 17a and the inner surfaces of both side walls 12b of the bracket 12 are engaged over substantially the entire length. Therefore,
In the connection state between the horizontal pipe 13 and the vertical pipe 11, relative lateral deflection between the mounting bracket 14 and the bracket 12 can be reliably restricted. (3) Since the engaging head 22a of the stop pin 22 is engaged with the wide portion 17a of the upper wedge hole 17 from below, it is possible to prevent the wedge-shaped member 15 from falling off from the mounting bracket 14.

The present invention can be embodied with the following modifications. (A) The restricting portion 20 is formed over substantially the entire length of the wedge-shaped member 15 so that the restricting portion 20 is also engaged with the inner surfaces on both sides of the lower wedge hole 18 when the wedge-shaped member 15 is inserted. . By doing so, the mounting bracket 14 and the bracket 1
2 can be more reliably regulated. (B) The intermediate wall 12a of the bracket 12 is disposed substantially parallel to the axis of the vertical pipe 11, and the mounting bracket 14 is attached to both mounting pieces 14
b and 14c are joined to the outer peripheral surface of the vertical pipe 11 at the same time.
To be joined to the outer surface of the intermediate wall 12a.

The technical ideas grasped from the above embodiment will be described below. (1) coupling structure of the pipe in the construction scaffold of claim 1 that is configured to be engaged on both sides the inner surface of the front Symbol restricting portion further down the wedge hole. With this configuration, it is possible to more reliably restrict the relative lateral vibration between the mounting bracket and the bracket. ( 2 ) The pipe connecting structure for a construction scaffold according to claim 1, wherein a retaining member is provided at a lower end of the wedge-shaped member to prevent the wedge-shaped member from coming off the mounting bracket.
With this configuration, when the wedge-shaped member is not used, the wedge-shaped member can be prevented from coming out of the mounting bracket.

[0026]

The present invention is configured as described above, and has the following effects. According to the first aspect of the present invention, the distal end edges of both mounting pieces of the mounting bracket and the vertical pipe
No gap is formed between the outer peripheral surface and both mounting pieces.
The recess at the tip edge is joined to the outer peripheral surface of the vertical pipe.
Therefore, the horizontal pipe and the vertical pipe can be firmly connected without any relative movement without making the structure of the bracket and its fixing structure to the vertical pipe particularly strong.

Further, it is possible to reliably restrict the relative lateral deflection of the mounting bracket and the bracket in the wide portion of the wedge hole.

[Brief description of the drawings]

FIG. 1 is a partially broken front view showing a pipe connection structure according to an embodiment.

FIG. 2 is a front view showing the entire connection structure of the pipes on the construction scaffold.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

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

FIG. 5 is a sectional view taken along line 5-5 in FIG. 1;

[Explanation of symbols]

11 ... vertical pipe, 12 ... bracket, 12a ... intermediate wall,
12b: Both side walls, 13: Horizontal pipe, 14: Mounting bracket, 1
4a: Intermediate wall, 14b: Upper mounting piece, 14c: Lower mounting piece, 15: Wedge-shaped member, 15a: Side edge corresponding to vertical pipe, 15b: Opposite side edge, 17: Upper wedge hole, 17a
... wide part, 18 ... lower wedge hole, 19 ... concave part, 20 ... regulating part.

Continuation of the front page (56) References JP-A-5-16983 (JP, U) JP-B-58-15588 (JP, B2) JP-B 6-58009 (JP, B2) JP-B 1-35871 (JP) , Y2) Special Table Sho-61-501639 (JP, A)

Claims (1)

(57) [Claims] 1. A flat, substantially U-shaped bracket is fixed to the outer peripheral surface of a vertical pipe, and a front, substantially horizontal U-shaped mounting bracket having a pair of upper and lower mounting pieces is fixed to an end of the horizontal pipe. ,
A wedge hole is formed in both mounting pieces of the mounting bracket,
The leading edges of the two mounting pieces are formed in arc-shaped recesses so that the leading edges of the two mounting pieces are joined to the outer peripheral surface of the vertical pipe, and the wedge hole of the upper mounting piece is held in a state where the mounting bracket is locked to the bracket. Through the bracket, insert the wedge-shaped member into the wedge hole of the lower mounting piece, engage the side edges corresponding to the vertical pipe of the wedge-shaped member with both wedge holes, and insert the opposite side edge into the inner surface of the intermediate wall of the bracket. In the pipe connecting structure of the construction scaffold in which the fitting and the bracket are connected by engaging with each other , at least wide portions are formed on both side surfaces of the wedge-shaped member.
Of the inner surface of the upper wedge hole and the side walls of the bracket
The inner surface is engaged over almost the entire length, and the mounting bracket and bracket
For the construction which formed the regulation part which regulates the horizontal run-out relative to
Pipe connection structure on a scaffold.