JPS6037368A - Scaffold, especially, building scaffold - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has a strut tube and struts and/or braces, with one strut rosette or a gap and an upwardly projecting outer rosette edge.

the ends of the horizontal members and/or braces are provided with support claws;
The present invention relates to a scaffold, in particular an architectural scaffold, in which the support pawl engages a rosette edge, each support pawl being secured to the rosette edge by a wedge.

This rice scaffolding is widely known. The advantage of this scaffold is that
Between the already fixed support tubes, the horizontal members and/or braces can be easily installed from above by means of support claws provided at their ends, whereby the support claws engage the four-set edges. The point is to do so. That is, there is no need for a place to move the struts and/or braces in their longitudinal direction. Other advantages of this scaffolding structure are:
The intersection of the strut tubes, which is formed by the strut rosette and the cross member that can be connected in a ring shape to its periphery, achieves a strong connection when driving the wedge, thereby making the entire scaffold stronger. It is in.

However, when a large number of support pipes, horizontal members, and/or bracing members are fixed to one scaffold, it is difficult to determine which wedges are driven in and which wedges are loosened. In other words, it is difficult to tell whether the wedge has been firmly driven in, or whether it has been driven in only a little or is loose. When assembling the scaffold, it is possible that the wedges, which have been firmly driven in, may loosen to some extent, resulting in play in movement. Particularly in this case, there is a disadvantage that the support claw of the equipment may unexpectedly come off the support rosette, which may cause the phase detection to malfunction and be dangerous.

For this reason, a claw structure without a formal or fixed mechanism was developed. This claw structure is designed to prevent it from falling out unexpectedly.
The t# wing is prevented from coming off the ll-L strut tube, but the cross joint is not strong. That is, even under normal usage conditions, a large amount of play occurs in the connection area between the strut tube and the cross member.

The object of the invention is to improve a scaffold of the type mentioned at the outset, in such a way that even if the wedge becomes loosened, the supporting pawl cannot be dislodged by simple means.

This problem is solved in that the upper region of the rosette is also thicker than the region near the bottom. Thereby, even if the supporting pawl cooperating with the wedge becomes loose, it will immediately self-lock when trying to pull out and will not come off unintentionally. Another advantage is that the support pawl is carried along when driving the wedge, so that only a small portion of the support pawl does not engage the rosette edge and is held inaccurately and unreliably.

The figure schematically shows an embodiment of the invention.

In FIG. 1, a part of the strut tube 1 is shown.

A strut rosette, or circular anchor plate 2, is fixed to this strut tube, in particular by means of a welded seam 4.

Usually, a plurality of rosettes 2 are fixed to one support pipe 1 vertically at predetermined intervals. The rosette 2 consists of a substantially ring-shaped bottom 3 and a rosette edge 5. This bottom part 3 has a central opening with the same diameter as the diameter of the strut tube 1. The upper part of the rosette edge 5 which projects outwardly is thicker than near the bottom part 5. In the embodiment shown, the inner surface 6 and the outer surface 7 of the rosette 2 form an acute angle of 4 to 8 degrees, in particular 63 A degrees, by linearly increasing the thickness of the rosette edge 5 in a cross section. There is. Regarding the selection of this angle, the occurrence of self-locking degree, which will be described in detail below, is an important factor. The inner surface 6 of the rosette edge 5 is formed as cylindrical as possible. However, since the rosette is generally made by die forging, it is advantageous to form the inner surface of the rosette edge at an acute angle of about 3 to 6 degrees, in particular 434 degrees, to the central axis of the column v1. This allows it to be conveniently removed from the rosette gold die mold that was created. Accordingly,
The outer surface 7 of the rosette edge is relative to the central axis of the column v1.
c It forms an angle of 8 to 13 degrees, especially 11 degrees.

Rosette 2 has the role of securing equipment at intersections. In FIG. 1, the horizontal members 8, 9 are each provided with one support claw at their free ends. This supporting pawl consists essentially of a solid projection 11 and a pawl-shaped hook 13. The projection 11 has a shape adapted to the free space of the horizontal members 8, 9 and is preferably fixed by a welded seam 12. The support claw 1o has a slit 14. The wedge 15 can be inserted into this slit fully downwardly, so that the wedge 15 is held within this slit 14. The wedge is then in contact with the support surface 31 of the slit and the outer surface 7 of the rosette edge 5. As a result, the support surface 31 of the wedge 15 and the slit 14 and the outer surface 7 of the rosette edge 5 fit into each other.

The wedge 15 is preferably retained in the slit 14 so that it cannot be dislodged and lost. For this purpose, the wedge 15 is preferably bent outwards at the lower wedge end 16. This wedge end is provided with a hole 17 for inserting a pin or bolt or the like. The length of these pins, bolts, etc. (the width of the slit 14) is also large.

As shown in FIG. 2, in addition to the rain leveling members 8 and 9 described above, another leveling member with all supporting claws can be fixed. This horizontal member is, for example, the horizontal member 19. If necessary, install horizontal brace pipe 20'tl at an angle to this horizontal member.
-Can be installed. Another fastening structure with the bracing tubes 27, 28 is evident by the use of bracing support pawls 21,22. This bracing support pawl is formed in substantially the same way as the support pawl 10, complete with slits and wedges 15. In this case, the connection with the bracing tubes 27, 28 is not made by welded seams, but by welded bolts 23, 24 which are attached to the bolts 25, 26. The ends 29, 30 of this bracing tube 27, 28 are flattened,
Each has one hole for mounting bolts 23 and 24. The operation of the above structure is as follows.

To secure the above-mentioned horizontal members or braces, support claws with claw-shaped hooks 13 are inserted or suspended in the rosette edge 5. In this case, the wedge 15 is held in the upper position. When the wedge 5 is now released, the wedge falls under its own weight and comes into contact with the outer surface 7 of the rosette edge 5 and the support surface 31 of the protrusion 11.

Then the wedge 15 is firmly driven in.

In this case, the support pawl is moved downwards until the pawl-shaped hook 15 completely engages the rosette edge 5 and is self-supporting. If the wedge 15 is forgotten to be driven in, or if it becomes somewhat slack during construction of the entire scaffold, the upwardly thickening of the rosette edge 5 provides a self-locking effect. In other words, this self-locking action prevents it from coming off upward. By simply sliding the support claw 10 upward a little, the claw-shaped hook 13 can be attached to the rosette edge 5.
It is in close contact with the inner surface 6 of , and cannot be slid upward any further. This is because the wedge 15 is in intimate contact with the surfaces 7, 31 mentioned above.

FIG. 3 shows another embodiment of the invention.

The same reference numerals are used for the same parts as in FIG. The same explanation as in FIG. 1 applies to this member. In this embodiment, the outer surface 107 of the rosette 2 is of spherical design, and the wedge 115 is correspondingly substantially sickle-shaped or crescent-shaped, as best seen in FIG.

FIG. 4 shows another embodiment of the invention.

In this case as well, the same reference numerals are used for the same parts as in FIG. In this embodiment, the inner surface 116 of the rosette edge 5 is at an angle of 6 to 6 degrees, in particular 5 degrees, relative to the central axis of the strut tube 1.
The outer surface 117 is inclined inward at an acute angle of
Since the hook 113 is formed so as to become thicker downwardly on the central axis of the hook 113, the engaging image portions interact with each other to prevent them from coming off due to the thicker portion. In this embodiment, the upper inner edge of the rosette edge 5 and the strut tube 1
Since the 0 interval is more than the maximum thickness of 7tsuku 113,
This hook can be easily inserted into and engaged with the rosette edge from above.

FIG. 5 shows another embodiment. In this case too, the same reference numerals as in FIG. 1 are used for the same parts. The four-jet edge 215 is formed as an inwardly projecting ring-shaped ridge. The hook 213 of each support claw 10 has a thickened portion 216 at its lower end, and this thickened portion is connected to the raised portion 215.
engage with. In this case, the distance between the inner surface of the raised part of the rosette edge 215 and the strut tube 1 is the same as that of the thick walled part 216 of the hook 213.
Since the hook is also large, the hook can be easily inserted into the rosette edge 215 from above.

[Brief explanation of the drawings] Figure 1 is a partial sectional view of the scaffold, Figure 2 is a plan view of Figure 1,
FIG. 3 is a partial sectional view similar to FIG. 1 of another embodiment;
The figure is a similar partial sectional view showing another embodiment, and FIG. 5 is a similar partial sectional view showing another embodiment. 1... Strut tube 2... Strut rosette 5... Rosette edge 8.9... Horizontal member 10... Support claw 15... Wedge agent Mitsuyoshi Ezaki agent Mitsuyoshi Ezaki Masaru

Claims (1)

[Scope of Claims] 1. A support pipe having a support pipe, a horizontal member and/or a brace member, 1
each column rosette or spacing has an upwardly projecting outer rosette edge, the ends of the horizontal members and/or braces are provided with support pawls that engage the rosette edges; In scaffolding, especially architectural scaffolding, where each support claw is fixed to the rosette edge by a wedge, the upper area of the rosette edge of the support rosette (2), (5) is also closer to the area near the bottom (3). Scaffolding is characterized by its thick walls. 2. The wall thickness of the rosette edge (5) increases linearly upwards when viewed in cross section, so that the inner surface (6) and outer surface (7) of the column rosette (2) form an acute angle (18) to each other.
Scaffolding according to claim 1, characterized in that it extends to form a shape. 3. Scaffolding according to claim 2, characterized in that the acute angle (18) is between 4 and 8 degrees, in particular 634 degrees. 4. The inner surface (6) of the rosette edge (5)
) makes an acute angle of 3 to 6 degrees, especially 4%, to the central axis of
Scaffolding according to claim 3, characterized in that the outer surface (7) forms an angle of 8 to 15 degrees, preferably 11 degrees. 5. The wedge (15) is attached to the supporting claw (10) (14
) with a wedge slit (14)
The supporting surface (51) is the outer surface (7) of the column rosette (2).
Scaffolding according to any one of claims 1 to 4, characterized in that it has a shape adapted to. Scaffolding according to claim 5, characterized in that the wedge (15) is held securely in the slit (14). Claim 1, characterized in that the wedge (15) is bent outwards at the lower wedge end (16) and is provided with a hole (17) for the insertion of a pin in this wedge end. Scaffolding according to item 6. 8. Claims 1 to 7, characterized in that the outer surface (107) of the support rosette (2) is formed into a spherical shape, and the wedge (1tS) is formed into a conical shape in accordance with this. Scaffolding according to any one of the above. 9 The inner surface (116) of the rosette edge (5)
1) at an acute angle of approximately 3 to 6 degrees, particularly 5 degrees, to the central axis of the
The outer surface (117) extends parallel to the central axis, and the hook (11) of the support claw (10)
3) is formed so that it becomes thicker toward the bottom, and the distance between the upper inner edge of the rosette edge (5) and the strut tube (1) is larger than the maximum thickness of the hook (113). Scaffolding according to any one of claims 1 to 3, characterized in that: 10. The rosette edge (215) is formed as an inwardly protruding ridge, and the hook (215) has a thickened portion (216) at its lower end that engages with the ridge, 2. The scaffold according to claim 1, wherein the distance between the inner surface of the raised portion of ?5) and the strut tube (1) is larger than the thick walled portion (216) of the hook (213).