JP2002004573A - Support structure for built-up scaffolding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide stable scaffolding by preventing wobble between vertically connected support members 5. SOLUTION: One of the support members 5 vertically connected together has an upper end which is provided with a cylindrical insertion receiving portion 16, and the other support member 5 has a lower end which is provided with an insertion portion 15 to be inserted into the insertion receiving portion 16. Then, a receptacle member 20 for regulating the depth of insertion of the inserting portion 15 is formed in the insertion receiving portion 16, and a slanting guide surface 15A is formed on an end face of the insertion portion 15. The slanting guide surface 15A guides an external surface of the insertion portion 15 in a manner making close contact with an internal surface of the insertion receiving portion 16 upon abutting on the receptacle member 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure of a prefabricated scaffold used for various works at a construction site or the like.

[0002]

2. Description of the Related Art As a support structure of this kind of assembling type scaffold,
For example, one disclosed in Japanese Patent Application Laid-Open No. 8-260691 is known. In this technique, a plurality of pipe-shaped strut members are joined up and down through joints to form a strut of a scaffold frame, and the joints are vertically inserted into joint ends of the upper and lower strut members. An insertion portion and a large-diameter flange portion provided between the upper and lower insertion portions to regulate the insertion depth of the upper and lower insertion portions. The upper and lower insertion portions are inserted into the upper and lower support members, and A lock pin is inserted into the lock to prevent removal.

[0003]

Since the above-mentioned assembling scaffold is assembled and disassembled as appropriate in accordance with various construction work processes, etc., the joining and disassembly of the support members are simple and easy. It must be quick. For this reason, usually, the outer diameter of the insertion portion of the joint is made smaller than the inner diameter of the column member so that a play is provided between the two so that the joint can be easily inserted and removed.

[0004] However, play between the joint and the column member leads to play between the two, and the scaffold frame becomes unstable, and work on the scaffold cannot be performed stably. Was caused. The present invention has been made in view of such circumstances, and provides a support structure of an assembling type scaffold that can form a stable scaffold by preventing backlash between support members vertically joined. The purpose is to do.

[0005]

The present invention employs the following technical means to achieve the above object. That is, the present invention provides a plurality of support members 5 arranged vertically.
In the column structure of the assembling type scaffold constituted by detachably joining the two pillar members 5 vertically joined to each other, one end of one of the pillar members 5 has a cylindrical inserted portion 16. And a receiving member 20 for controlling the insertion depth of the insertion portion 15 in the insertion portion 16 at the joint end of the other support member 5. And an inclined guide surface 15 </ b> A that guides the outer surface of the insertion portion 15 so as to be in close contact with the inner surface of the inserted portion 16 by contacting the end surface of the insertion portion 15 with the receiving member 20. Is formed.

According to this, the insertion portion 15 is inserted into the insertion portion 16.
When the guide surface 15A is brought into contact with the receiving member 20 by inserting the insertion portion, the inclination thereof guides the insertion portion 15 to move to the side, and the outer surface of the insertion portion 15 is attached to the inner surface of the inserted portion 16. Become closer. Therefore,
Just by inserting the insertion section 15 into the insertion section 16, rattling can be easily prevented, and a stable scaffold can be formed. The present invention is characterized in that a stopper member 23 for preventing the insertion part 15 and the inserted part 16 from coming off from each other is provided on the side surface part of the insertion part 15 and the inserted part 16 which are in close contact with each other.

As a result, the retaining member 23 is prevented from being accidentally detached, and the retaining effect is more effectively achieved. In the present invention, the pair of support members 5 arranged in parallel are connected by a horizontal bar 6 to form a building frame 7, and the guide surfaces 15A of the insertion portions 15 provided on the pair of support members 5 are identical to each other. It is characterized by being provided inclining in the direction. According to this, when each insertion part 15 of the pair of support members 5 constituting the building frame 7 is joined to each inserted part 16 of the pair of support members 5 forming the other construction frame 7, The guide surface 15A of the insertion portion 15 cooperates to guide each insertion portion 15 in the same direction, and comes into strong contact with each insertion portion 16, so that the gap between the insertion portion 15 and the insertion portion 16 is increased. Is more reliably prevented.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 4 and 5 show an assembled scaffold 1 according to an embodiment of the present invention. The assembled scaffold 1 is mainly composed of a scaffold frame 2 and a scaffold plate 3. As shown in FIG. 5, the scaffold frame 2 is a set of two support members 5 arranged in parallel in the front and rear, and these are connected by a plurality of upper and lower (four in the example) horizontal rails 6. The ladder 8 is constructed by joining a plurality of (three in the example in the figure) of the framing frames 7 detachably up and down to form a ladder 8. The brace 9 and the horizontal rod 1 are arranged with the two facing each other as shown in FIG.
By connecting at 0, a three-dimensional frame shape is exhibited. In addition, for each of the pillar members 5 at the bottom,
A leg 11 that is inclined outward and downward is provided to be freely foldable,
A handrail member 12 is provided between the uppermost building frames 7. The scaffold plate 3 is provided so as to extend between the opposing cross rails 6 having an appropriate height.

As shown in FIG. 3, the support members 5 and the crosspieces 6 constituting the building frame 7 are made of a metal pipe material, and these are connected and fixed to each other via a joint member 13. ing. Further, an insertion portion 15 is provided at a lower end portion of each support member 5, and an inserted portion 16 is provided at an upper end portion, and the upper support member 5 is provided with respect to the insert portion 16 of the lower support member 5. The two parts are detachably joined by inserting the insertion part 15. As shown in FIGS. 1 and 2, the insertion portion 15 is provided with a retaining means 17 for retaining the inserted portion 16.

The insertion portion 15 is made of a pipe material having an outer diameter slightly smaller than the inner diameter of the support member 5.
The upper part is inserted into the lower end opening of the support member 5 and fixed by a fastener 18 composed of a bolt and a nut, and the lower part protrudes from the lower end of the column member 5. On the other hand, the inserted portion 16 is formed in a tubular shape by the upper end itself of the support member 5, and the insertion portion 1 is located slightly below the upper end opening.
5 is provided with a receiving member 20 with which the lower end surface 15A is in contact.

In the present embodiment, the receiving member 20 is constituted by a bolt penetrating right and left through the center of the support member 5 in the front-rear direction, and is fixed by screwing a nut to the bolt. When the portion 15 is inserted, the lower end surface 15A of the insertion portion 15 comes into contact with the receiving member 20, whereby the insertion depth is regulated. The lower end surface 15A of the insertion portion 15 is an inclined surface (guide surface) inclined with respect to the axial direction. When the guide surface 15A comes into contact with the receiving member 20, the distal end portion of the insertion portion 15 becomes The guide surface 15 is inserted into the gap S between the receiving member 20 and the inner surface of the inserted portion 16 (see FIG. 1).
The insertion portion 15 is guided by A to move laterally (in the direction of arrow A), and the outer surface of the insertion portion 15 comes into close contact with the inner surface of the inserted portion 16.

As a result, the insertion portion 15 and the inserted portion 16
Rattling between them is prevented, and a stable scaffolding frame 2 can be formed. Further, when a downward load F is applied to the support member 5 such as when the worker climbs up via the ladder 8 or works on the scaffold plate 3, the outer surface of the insertion portion 15 is Since the inner surface of the inserted portion 16 is strongly and closely contacted (pressed), rattling is further prevented, and work on the scaffold plate 3 can be performed satisfactorily. That is, in the support structure according to the present invention, although the outer diameter of the insertion portion 15 is slightly smaller than the inner diameter of the inserted portion to facilitate the joining and detachment of the both, the insertion portion 15 is covered. The looseness can be easily suppressed by simply inserting it into the insertion portion 16, and this operation can be realized with a very simple structure by the guide surface 15A and the receiving member 20.

As shown in FIG. 3, the guide surface 15 of the insertion portion 15 provided on the two support members 5 in each building frame 7 is provided.
A is inclined in the same direction, and each guide surface 15A guides each insertion portion 15 in the same direction so as to be in close contact with the inner surface of the inserted portion 16 in the same direction. . That is, if the guide surfaces 15A of the insertion portions 15 are inclined in opposite directions to each other, the guiding directions for the insertion portions 15 are also reversed, and the close contact with the insertion portions 16 is prevented. Guide surface 15 as described above
By inclining A in the same direction, each guide surface 15 cooperates to bring each insertion part 15 into close contact with each insertion part 16, thereby further preventing rattling. It is.

The retaining means 17 has a support 22 made of a leaf spring material having a U-shape in a side view in the insertion portion 15.
One end of the support 22 is provided with a retaining member 23 that extends downward and protrudes outward at the lower end thereof, and protrudes outward at the other end of the support 22 and an up-and-down halfway at one end. A push member 24 is provided. The pushing member 24 protrudes from insertion holes 25 formed on both upper side surfaces of the insertion portion 15, and is disposed so as to overlap vertically with the lower end of the support member 5. A notched concave portion 28 is formed.

The retaining member 23 is inserted into an insertion hole 26 formed on one side of the lower part of the insertion portion 15 so as to be able to move back and forth, and when the pushing piece 24 at one end of the support 22 is pushed inward by hand. When the retaining member 23 retreats from the outer surface of the insertion portion 15 and is released, the retaining member 23 projects again by the elastic restoring force of the support 22. On one side surface of the inserted portion 16,
An engaging hole 27 through which the retaining member 23 is inserted and engaged is formed in a penetrating manner. When the insertion portion 15 is inserted into the inserted portion, the retaining member 23 engages with the engaging hole 27. It has become a retainer.

The lower surface of the retaining member 23 has an inclined surface 23.
A is formed, and when the insertion portion 15 is inserted into the insertion target portion 16, the inclined surface 23A comes into contact with the upper edge of the insertion target portion 16 so that the retaining member 23 is automatically retracted. The retaining member 23 is inserted into the insertion portion 15.
Also, care is taken so as not to hinder the joining of the inserted portion 16. The above-mentioned retaining member 23 is provided on the side surface on the opposite side to the direction in which the guide surface 15A of the insertion portion 15 faces.

That is, the retaining member 23 is disposed on the side surface of the inserted portion 15 and the inserted portion 16 which are in close contact with each other, so that the state of insertion of the retaining member 23 into the locking hole 27 is reliably maintained. Thus, care is taken to prevent the retaining member 23 from accidentally detaching due to vibration or the like. FIG. 6 shows a second embodiment of the present invention.
However, it is constituted by a plate material provided at an angle approximately equal to the guide surface 15 </ b> A of the insertion portion 15.

In this embodiment, the same operation and effects as those of the first embodiment can be obtained. In addition, since the pressure receiving area is enlarged by forming the receiving member 20 by a plate material, the occurrence of wear and the like occurs. Can be suppressed. The other components are the same, and therefore, are denoted by the same reference numerals, and detailed description will be omitted. The present invention
The design can be changed as appropriate without being limited to the above embodiment.
For example, the insertion portion 15 may be provided at the upper end of the support member 5 and the inserted portion 16 may be provided at the lower end. The receiving member 20 is not limited to a bolt or a plate, but may be a round bar or a square bar. And the like. When the receiving member 20 is formed of a square bar, it is preferable to arrange one side surface of the receiving member 20 so as to be inclined so as to be substantially parallel to the guide surface of the insertion portion.

The insertion portion 15 may be detachable from the support member 5 or may be integrally fixed thereto. The inserted portion 16 is formed separately from the support member 5 by a cylindrical member. You may comprise by mounting a member. The support member 5, the insertion portion 15, and the inserted portion 16 are not limited to being formed in a cylindrical shape, and may be formed in a rectangular tube shape or the like.
The guide surface 15A of No. 5 can be formed in an inclined surface such as an arc shape. Further, the guide surface 15A may be formed partially on only the portion of the lower end surface of the insertion portion 15 that contacts the receiving member 20.

[0020]

As described above in detail, according to the present invention, it is possible to provide a stable scaffold by preventing rattling between pillar members joined vertically.

[Brief description of the drawings]

FIG. 1 is a side view (partially sectional view) showing a joint portion of a support member according to a first embodiment of the present invention.

FIG. 2A is a front view showing a state before the support members are joined, and FIG. 2B is a side view of the same.

FIG. 3 is a side view showing a state before joining the building frames.

FIG. 4 is an overall front view of the scaffold.

FIG. 5 is an overall side view of the scaffold.

FIG. 6 is a side view (partially sectional view) showing a joint portion of a support member according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Assembling type scaffold 5 Prop member 6 Side beam 7 Building frame 15 Insertion part 15A Guide surface 16 Insertion part 23 Stopping member

Claims (3)

[Claims] In a support structure of an assembled scaffold constituted by detachably connecting a plurality of support members (5) arranged vertically, two support members (5) connected vertically. ), The cylindrical inserted portion (16) is provided at the joint end of one of the support members (5).
And an insertion portion (15) to be inserted into the inserted portion (16) at a joint end of the other support member (5), and the insertion portion (15) in the inserted portion (16). A receiving member (20) for regulating the insertion depth of the insertion portion (15) is provided, and the outer surface of the insertion portion (15) is inserted into the end surface of the insertion portion (15) by contacting the receiving member (20). A support structure for an assembling scaffold, characterized in that an inclined guide surface (15A) for guiding the inner surface of the portion (16) so as to be in close contact therewith is formed. 2. A retaining member (23) for preventing the insertion portion (15) and the inserted portion (16) from coming off from each other is provided on side surfaces of the insertion portion (15) and the inserted portion (16). Item 2. The support structure of the assembled scaffold according to Item 1. 3. A building frame (7) by connecting a pair of said support members (5) arranged in parallel by a cross beam (6).
The guide surface (15A) of each insertion portion (15) provided on the pair of support members (5) is provided to be inclined in the same direction. A pillar structure for a prefabricated scaffold.