JP2000226935A - Assembling support of temporary structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the deformation and buckling of a support and contrive the maintenance of the initial strength of the whole temporary structure by supporting the insertion end of other supports set up by being inserted in the thin diameter part of the support by a stopper in an assembling support. SOLUTION: One end side (upper end side) of a support 4 is drawn, and a taper part 4b gradually diameter-reduced toward a thin diameter part 4a is possessed on the outer periphery. A through hole H is formed on the thin diameter part 4a of the support 4 and the corresponding part of an upward support 3 inserted in the thin diameter part 4a, and the supports 3, 4 can be connected so as not to be slipped off by inserting a pin in each through hole H. The taper face 5a of a stopper 5 is enlarged in the direction of the diameter enlargement of the taper face of the support 4, and when the stopper 5 is inserted in the taper face 4b, a whole or a part of the taper face 5a is locked so as not to be slipped off in the direction of the diameter enlargement (downward direction). Thereby the concentration of stress for a part of the support is avoided, deformation or buckling is prevented and the initial strength of the whole temporary structure can be maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling column of a temporary structure used for assembling a temporary structure such as a framed scaffold, a shoring and the like in a construction or civil engineering work.

[0002]

2. Description of the Related Art A framed scaffold as a temporary structure is constructed, for example, by arranging a large number of gate-shaped building frames in a horizontal direction at arbitrary intervals while facing the front-rear direction, and providing scaffolds between the building frames in a longitudinal direction. The boards are detachably mounted, and are further assembled so as to connect the building frames with each other by interposing an X-shaped cross breath between the horizontally adjacent building frames.

[0005] Further, as shown in FIG. 5, for example, a flange 6 is provided at an intermediate portion and an upper portion of the column 1, and a substantially U-shape is formed between the upper flange 6 and the lower outer periphery of the column 1 as shown in FIG. Each end of the frame 7 is connected to each other.

[0004] At a portion of the frame 7 facing each of the flanges 6, there is provided a metal fitting 8 for connecting the other adjacent column or the like, and a space between the column 1 and the frame 7 is provided. One end of each of the two horizontal members 9 is connected to each other so that the strength of the entire building frame can be obtained.

Further, a plurality of building frames having the above-mentioned structure are used by being connected in accordance with the height of a structure to be constructed. More than one book is used as an assembling strut, and is assembled so that the lower end of the upper strut is inserted into the upper end of the lower strut of a predetermined length.

FIG. 6 is a cross-sectional view showing an assembling column of a building frame in such a conventional temporary structure. The column is a lower column 1 made of a pipe material, and a flange-like stopper 2a formed by caulking or welding around the center. Are connected integrally, and an upper column 3 as the other column made of a pipe material.

The support 3 is also used as a part of a building frame as shown in FIG. Each of the corresponding portions of the connecting member 2 and the lower and upper columns 1 and 3 is provided with an insertion hole H for a pin (not shown) for interconnecting them.

In this assembled column, one of the connecting members 2 is inserted into the lower column 1 so that the upper end surface of the column 1 supports the lower surface of the stopper. The upper column 3 is inserted into the other outer periphery of the connecting member 2 projecting upward, and the lower end surface of the column 3 is supported against the upper surface of the stopper so as to be supported. 3 can be used for aerial work by adding it upward and using it as a framework scaffold or the like.

FIG. 7 is a sectional view showing another conventional supporting column, which is a lower supporting column 1 made of a pipe material and similar to the above.
A connecting member 2 made of a pipe material whose lower half is inserted into an upper portion of the lower column 1 and is welded at a through hole 1b formed in the column 1; and an upper half of the connecting member 2 And the upper column 3 into which the lower part is inserted. The connecting member 2 and the upper column 3 are provided with pin insertion holes H for connecting these members to each other.

In this assembled column, the connecting member 2 is integrally connected to the lower column 1 by welding in advance, so that the upper half of the connecting member 2 projecting above the lower column 1 is moved upward. By inserting the supporting column 3, the lower end surface of the supporting column 3 can be supported by striking the upper end surface of the lower supporting column 1. Also in this case, the work at high places can be performed by adding the building frames and the columns and using them as, for example, a framed scaffold.

[0011]

However, among the conventional supporting columns of the temporary structure, the one shown in FIG. 6 is provided between the lower supporting column 1, the connecting member 2 and the upper supporting column 3. Since the insertion play for facilitating the insertion work into one of the other is provided in the radial direction, the respective center axes of the support 1, the connecting member 2 and the support 3 are not always aligned and eccentric. Therefore, the vertical load from the upper column 3 is not applied perpendicularly to the entire support surface of the lower column 1, that is, an unbalanced load is applied to the column 1, and the stress concentrates on the portion where the above-mentioned insertion play (gap) occurs. Then, there is a problem that the columns 1 and 3 are deformed or buckled largely at this portion, and the entire temporary structure such as the building frame and the shoring is deformed.

In the structure shown in FIG. 7, although there is no horizontal play between the lower support 1 and the connecting member 2, they are eccentric to each other. When the upper column 3 is offset from the lower column 1 in the horizontal direction by the maximum eccentricity due to the eccentricity between the lower column 1 and the upper column 3, there is an insertion play between the upper column 3 and the upper column 3. As shown in FIG. 8, the lower end surface of the upper column largely deviates in the eccentric direction from the upper end surface of the lower column 1 serving as the support surface of the upper column 3, and a small amount in the direction orthogonal to the eccentric direction. Only in the region R, the upper end surface of the lower support 1 supports the lower end surface of the upper support 3. Therefore, the vertical load is concentrated on a part of each of the columns 1, 3, and there is a problem that the columns 1, 3 may be deformed or buckled as described above.

The present invention has been made to solve the above-mentioned problem, and makes it possible to connect an upper column to a lower column via a stopper so that a vertical load from the upper column can be uniformly applied to the entire region of the lower column. By making it possible to receive evenly, it is possible to avoid concentration of stress on a part of the upper column and the lower column, thereby preventing these deformations and buckling, and as a result, the entire temporary structure It is an object of the present invention to obtain an assembly support for a temporary structure capable of maintaining the desired strength.

[0014]

According to a first aspect of the present invention, there is provided a temporary structure assembling column according to the first aspect of the present invention.
A column having a tapered portion that reduces in diameter toward the small-diameter portion on one end side, and a stopper that is inserted from the small-diameter portion of the column and has a tapered surface held on the tapered portion on the inner periphery is provided. The insertion end of another support that is inserted into the small-diameter portion and assembled can be supported by a stopper.

According to a second aspect of the present invention, there is provided an assembling column for a temporary structure, wherein a supporting end surface of a stopper for supporting an insertion end of another column is misaligned with respect to the column. Regardless, it has a width to support substantially the entire end surface of the insertion end.

According to a third aspect of the present invention, there is provided an assembling column of the temporary structure, wherein the column and the other column inserted therein are provided with insertion holes for pins for connecting the columns to each other.

According to a fourth aspect of the present invention, there is provided an assembly column for a temporary structure, wherein a tapered surface of a stopper is fixed to a tapered portion of the column by press-fitting or welding.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an assembly column of the present invention, and FIG. 1 shows one (lower) column 4 constituting the assembly column of the present invention. This pillar 4
The tapered portion 4b as shown in FIG. 2 is formed by drawing at one end (upper end) and gradually reducing the diameter toward the small-diameter portion 4a.
On the outer periphery. Further, a large diameter portion 4c is provided which is continuous with the small diameter portion 4a via the tapered portion 4b.

The small diameter portion 4a of the column 4 and the small diameter portion 4a
A through hole H is formed as a pin insertion hole at a position corresponding to the upper column 3 to be inserted into the through hole. By inserting a pin into each of the through holes H, the columns 3 and 4 are detached. It can be connected so as not to be pulled out.

Further, the small diameter portion 4a and the tapered portion 4
A stopper 5 having an inner periphery with a tapered surface 5a that can be held by the tapered portion 4b can be inserted into b as shown in FIG. The diameter of the tapered surface 5a of the stopper 5 is increased in the diameter-enlarging direction of the tapered surface of the support column 4. As shown in FIG. 3, when the stopper 5 is inserted into the tapered portion 4b, the tapered surface 5a The whole or a part is locked so as not to come off in the radially expanding direction (downward).

In order to securely lock the tapered surface 5a of the stopper 5 to the tapered portion 4b of the support column 4, as shown in FIG.
Is further pressed in the direction of arrow P. By doing so, the tapered surface 5a of the stopper 5 with respect to the tapered portion 4b
As shown in FIG. 4, the stopper 5 is closely and closely fitted over substantially the entire surface, and further movement of the stopper 5 in the radially expanding direction (the direction of arrow P) is restricted.

For this reason, the stopper 4 is integrally fixed to the column 4 without any eccentric play so that the stopper 5 is concentrically arranged on the outer periphery of the column 4. In other words, the center axes of the column 4 and the stopper 5 coincide with each other. Is stably maintained, and the upper end surface of the stopper 5 stably supports the lower end surface of the upper column 3 inserted from the small diameter portion 4a side.

By the way, the lower end surface support of the upper column 3 at the upper end surface of the stopper 5 is such that when the inner diameter of the upper column 3 inserted into the small diameter portion 4a is large, the upper column 3 and the lower column 3 It is conceivable that a large gap is formed between the support 4 and the support 4, which causes eccentric play as described above and makes the support of the upper support unstable. In such a case, the upper end surface of the stopper 5 should have an area large enough to securely receive the entire lower end surface of the upper column 3 irrespective of the eccentric play. That is, the thickness of at least the upper end surface of the stopper 5 may be sufficiently increased.

As a result, it is possible to prevent the lower end of the upper column 3 from being deformed or buckled due to the concentration of stress on a part. As described above, the deviation of the central axis between the lower support and the upper support 3 is absorbed by the stopper 5,
Even if the upper column 3 is added to the lower column 1, the columns 1 and 3 stand up stably in the vertical direction. For this reason, it is possible to reliably prevent deformation of the building frame having such an assembly column and the entire temporary structure, and to maintain a sufficient strength at the time of initial design.

In the above description, a case where each of the columns 1, 3 and the stopper 5 has a circular cross section has been described. However, the present invention can be applied to a case where each of the columns has a rectangular cross section, and the same operation and effect as above can be realized. it can. In addition, the support 4
In order to further stably hold the press-fitted state of the stopper 5 into the tapered portion 4b, these may be firmly and integrally connected by welding such as spot welding or caulking as necessary.

As described above, the assembling column according to the present invention uses a long connecting member as in the prior art, and has a disadvantage in processing cost and assembling work due to holding and fixing the pin by welding. Can be improved, and the vertical extension can be achieved while absorbing the eccentric play with the stopper only by the simple insertion work of each support.

[0027]

As described above, according to the present invention, the column is provided with the tapered portion whose diameter is reduced toward the small-diameter portion at one end, and the tapered surface held by the tapered portion is formed from the small-diameter portion of the column. By inserting a stopper on the inner circumference and inserting it into the small diameter part of the pillar and assembling it so that the insertion end of the other pillar can be supported by the stopper, the vertical load from the upper pillar is evenly distributed. It is possible to receive evenly over the entire area of the lower strut, thereby avoiding the concentration of stress on the upper strut and a part of the lower strut, preventing these deformations and buckling beforehand, As a result, the effect that the desired strength of the entire temporary structure can be maintained can be obtained.

Further, the supporting end surface of the stopper for supporting the insertion end of the other post has a width to support substantially the entire end surface of the insertion end despite the misalignment of the other post with respect to the post. As a result, it is possible to distribute the vertical load received from the upper column evenly and to receive the entire lower column, so that the deformation and buckling due to the bias of the stress on each of these columns is possible. It can be prevented more reliably.

Further, since the pillar and the other pillar inserted therein are provided with pin insertion holes for connecting the pillars to each other, the pins are passed through these pin holes to connect the pillars. The stopper can be securely fixed and the tapered surface of the stopper is fixed to the tapered portion of the column by press-fitting or welding, so that the connection to the column below the stopper is assured, and the upper column supported on this stopper is The effect of being able to stably support vertically is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an assembly column of a temporary structure according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a relationship between insertion positions of a support and a stopper according to the present invention.

FIG. 3 is a cross-sectional view showing a state where a stopper is inserted into a support column in FIG. 1;

FIG. 4 is a cross-sectional view showing a state in which a stopper is press-fitted to a support column in FIG.

FIG. 5 is a front view showing a building frame of a conventional temporary structure.

FIG. 6 is a sectional view showing an assembly support of the building frame in FIG. 5;

FIG. 7 is a cross-sectional view showing another conventional supporting column.

FIG. 8 is an explanatory diagram showing a joining state of a contact surface between an upper column and a lower column in FIG. 7;

[Explanation of symbols]

 3 Other struts 4 Struts 4a Narrow diameter portion 4b Tapered portion 5 Stopper 5a Tapered surface

Claims (4)

[Claims] 1. A support having a tapered portion that reduces in diameter toward a small-diameter portion on one end side, and inserted from the small-diameter portion of the support,
A temporary stopper having a stopper having a tapered surface held in the tapered portion on an inner periphery thereof, wherein the insertion end of another pillar inserted into the small diameter part of the pillar and assembled can be supported by the stopper. An assembly support for a structure. 2. A support end surface of a stopper for supporting an insertion end of another post has a width to support substantially the entire end surface of the insertion end despite the misalignment of the other support with respect to the support. The assembly support column for a temporary structure according to claim 1, wherein: 3. The post according to claim 1, wherein the post and another post inserted therein have insertion holes for pins for connecting the posts to each other. 4. The post according to claim 1, wherein the tapered surface of the stopper is fixed to the tapered portion of the post by press-fitting or welding.