JP2710731B2 - Temporary spiral staircase - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary spiral staircase widely used at construction sites and other high places.

[0002]

2. Description of the Related Art At construction sites, for example, erection stairs for climbing up and down to the upper floor together with temporary scaffolds are sometimes constructed, and most of them are so-called gun stairs or folding stairs. It is built integrally with the scaffold.

[0003]

However, this type of stairs requires a relatively large space in shape, so that the installation place is naturally limited, and there are problems such as obstruction of other work. there were.

[0004] Further, as a part of the erection scaffold, it is assembled integrally with the temporary scaffold, so that there is a problem that it cannot be moved at all after assembly.

[0005] Furthermore, since it is necessary to assemble the construction materials such as single pipes while fixing them one by one with a fastener such as a clamp, there has been a problem that the assembly and disassembly tend to be complicated.

The present invention has been made to solve the above-mentioned conventional problems, and can be easily constructed even in a very small space, and can be extremely easily assembled and disassembled. It is an object to provide a temporary spiral staircase.

[0007]

A temporary spiral staircase according to the present invention comprises a main pillar built at the center of a temporary spiral staircase to be constructed, and a guide built around the main pillar at predetermined intervals. A support column and an auxiliary column, an upper connection ring and a lower connection ring respectively connecting upper and lower ends of the guide column and the auxiliary column, and fixed around the parent column by a clamp to the parent column, the guide column and the auxiliary column. A plurality of step boards and landing plates that are helically attached while being provided, and a handrail that is helically attached to the inside of the guide columns and the auxiliary columns while being fixed to the guide columns and the auxiliary columns by clamps. The upper connecting ring and the lower connecting ring are provided with through holes in accordance with the positions where the guide posts are installed. A male bracket protruding from the upper and lower ends of the guide column is penetrated into the through hole of the bracket, and is connected by tightening with a fixing nut. To add the joints, attach a joint fitting to the upper end of the lower guide support, insert the upper support into this joint, insert the retaining pin into the joint, and attach the upper end of the lower guide support and the lower end of the upper guide support. Brackets are protrudingly provided at the portions, and the brackets are connected by a connecting plate.

[0008]

[Embodiment 1] 1 to 6 show an embodiment of a temporary spiral staircase according to the present invention. FIG. 1 is a partial front view of a temporary spiral staircase (hereinafter simply referred to as a spiral staircase), and FIG. 3 is a side view, FIG. 4 is a plan view of a step board, FIG. 5 is a plan view of a landing plate, and FIG. 6 is a connection portion between a lower connection ring and an upper connection ring and a guide support. FIG.

In the drawings, reference numeral 1 denotes a main support built at the center of a spiral staircase, 2 denotes a guide support built around the main support 1 in a circular shape at predetermined intervals, and 3 denotes guide supports 2 and 2. Auxiliary pillars built at predetermined intervals in between,
4 is an upper connecting ring connecting the lower ends of the guide columns 2 and the auxiliary columns 3, 5 is an upper connecting ring connecting the upper ends of the guide columns 2 and the auxiliary columns 3, and 6 and 7 are spirals around the main column 1. The reference numeral 8 denotes a handrail spirally mounted inside the guide column 2 and the auxiliary column 3.

The main support 1, the guide support 2, and the auxiliary support 3
In each of the examples, a steel pipe is used, and male screw portions 9 having a predetermined length are protruded from upper and lower ends of the guide column 2.

The diameters of the main support 1, the guide support 2 and the auxiliary support 3, and the installation intervals of the guide support 2 and the auxiliary support 3 are appropriately determined according to the scale of the spiral staircase and the number of the step plates 6.

An entrance 10 is provided between some of the guide posts 2 by omitting the auxiliary posts 3 to be built in this portion.

Lower connecting ring 4 and upper connecting ring 5
Are each divided into two or more in the circumferential direction according to the diameter of the spiral staircase (divided into two in the embodiment), and are connected by connecting bolts. Thereby, it is configured in a circular ring shape.

A bracket 11 is horizontally protruded outside the vertical flanges 4a and 5a of the lower connecting ring 4 and the upper connecting ring 5 so as to coincide with the position where the guide column 2 is installed. Through holes through the bracket 11 vertically
12 are formed.

The guide post 2 is provided in the through hole 12 of the bracket 11.
And the fixing nut 13 is fastened to the tip of the male screw portion 9, so that the upper and lower ends of the guide column 2 are firmly connected by the lower connecting ring 4 and the upper connecting ring 5.

The upper and lower ends of the auxiliary column 2 are fixed to the lower connecting ring 4 and the upper connecting ring 5 by a fastener (not shown) such as a clamp. 4 and the upper connection ring 5 respectively.

The step plate 6 is formed in a fan shape which gradually becomes wider outward from the main support 1 side than the steel plate, and clamps 14 are respectively attached to inner and outer ends thereof.
In addition, reinforcing ribs 6 are provided on the edge of the step board 6 in order to increase rigidity.
a, 6a are formed, and uneven antiskid is formed on the surface.

The stepped plate 6 has its inner end clamped by a clamp 14.
And the outer end is fixed to the guide column 2 or the auxiliary column 5 via the clamp 14 so as to be spirally mounted around the main column 1 while maintaining a specified lift. I have.

The landing plate 7 is formed in a substantially rectangular plate shape like a steel plate like the step plate 6, and clamps 14 are respectively attached to inner and outer ends thereof. Landing 7
Reinforcing ribs 7a, 7a are formed at the edge of the to increase rigidity, and uneven anti-slip is formed on the surface.

Further, the landing plate 7 is attached to the lower side of the lowermost step plate 6 and the upper side of the uppermost step plate 6, respectively, and both of the inner ends are fixed to the main support column 1 via clamps 14. The outer end is fixed to the guide column 2 or the auxiliary column 5 via the clamp 14.
Further, the landing plate 7 below the lowermost plate 6 is attached to the entrance 10.

A steel pipe is used for the handrail 8 and is spirally attached to the inside of the guide support 2 and the auxiliary support 3 while maintaining a specified handrail height along these supports. It is fixed to the auxiliary support 3 by a clamp (not shown).

The main strut 1, the guide strut 2 and the auxiliary strut 3 are extended on top of each other, and a new plate 6 and a landing plate 7 are newly provided around the extended main strut 1.
The height of the spiral staircase can be freely increased by attaching the landing plate 7 in a manner to attach it.

In this case, for example, the upper and lower guide posts 2
They are connected by a configuration as shown in FIG. That is, in the drawing, a pipe-shaped joint fitting 15 is attached to the upper end of the lower guide support 2, the lower end of the upper guide support 2 is inserted into the joint 15, and the upper guide support 2 and the joint 15 are connected. The retaining pin 16 is inserted into the side of the.

A bracket 17 projects from an upper end of the lower guide support 2 and a lower end of the upper guide support 2, and the bracket 17 is connected by a connecting plate 18.

With this configuration, the connection and disconnection of the upper and lower guide columns 2 can be performed with one touch.

The upper and lower support posts 1,1 and the upper and lower support posts 3,3
Are connected in such a manner that connection and disconnection can be performed with one touch.

Embodiment 2 FIG. 7 to 10 show another embodiment of the temporary spiral staircase according to the present invention, FIG. 7 is a front view showing the entire spiral spiral staircase for installation, FIG. 8 is a front view of a unit dedicated to staircase, FIG. FIG.
FIG. 3 is a front view of a doorway dedicated unit. In the figure,
The same reference numerals are given to the same parts and corresponding parts as in the first embodiment, and the description thereof will be omitted.

In the drawing, reference numeral 19 denotes a unit dedicated to stairs,
20 and 21 are doorway-only units.

An entrance / exit unit 20 is installed at the bottom of the spiral staircase, a stair / exclusive unit 19 is installed on the entrance / exit unit 20, an entrance / exit unit 21 is installed on the staircase exclusive unit 19, and The stair units are firmly connected so as not to separate from each other.

According to this embodiment, a spiral staircase can be constructed simply by stacking and connecting the respective staircase units, so that the assembling work can be greatly simplified, and the staircase-specific unit 19 can be increased. The height of the spiral staircase can be freely raised.

[0031]

The present invention is constructed as described above, and is constructed in a spiral shape in the vertical direction, so that it can be installed in a very small space without taking up space, and becomes an obstacle to other operations. Very few.

Further, since most of the assembled parts are assembled by the clamps, assembly and disassembly can be performed very easily. Furthermore, the parts are all conventional, which is very economical.

Further, since it can be constructed independently, it can be easily moved even after assembling.

Further, since the guide posts are firmly connected by the upper and lower connecting rings, and the brackets projecting from the upper and lower guide posts are formed to be connected by the connecting plate, so that the vertical direction of the guide posts can be improved. The connection is strong, and the connection and disconnection can be performed with one touch.

[Brief description of the drawings]

FIG. 1 is a partial front view of one embodiment of a temporary spiral staircase according to the present invention.

FIG. 2 is a partial plan view of a lower connecting ring.

FIG. 3 is a side view of the lower connecting ring of FIG. 2;

FIG. 4 is a plan view of a step board.

FIG. 5 is a plan view of a landing plate.

FIG. 6 is a longitudinal sectional view of a connecting portion between a lower connecting ring, an upper connecting ring, and a guide support.

FIG. 7 is a front view showing the entirety of another embodiment of the temporary spiral staircase according to the present invention.

FIG. 8 is a front view of a unit dedicated to stairs.

FIG. 9 is a front view of a doorway dedicated unit.

FIG. 10 is a front view of a doorway dedicated unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main support | pillar, 2 ... Guide support | pillar, 3 ... Auxiliary support, 4 ... Lower connection ring, 5 ... Upper connection ring, 6 ... Step board, 7 ... Landing board, 8 ... Handrail, 9 ... External thread part, 10 ... Entrance / exit Department,
11 ... bracket, 12 ... through hole, 13 ... fixing nut, 14 ... clamp, 15 ... joint bracket, 16 ... retaining pin, 17 ...
Bracket, 18 ... Connecting plate, 19 ... Unit for stairs, 20, 21 ... Unit for entrance and exit.

Claims (1)

(57) [Claims] 1. A main support built at the center of a temporary spiral staircase to be built, a guide support and an auxiliary support built around the main support at predetermined intervals, and upper and lower sides of the guide support and the auxiliary support. An upper connecting ring and a lower connecting ring respectively connecting both ends, and a plurality of step boards and landings which are helically mounted around the main support while being fixed to the main support, the guide support and the auxiliary support by a clamp. A guide plate, and a handrail that is spirally attached to the inside of the guide support and the auxiliary support while being fixed to the guide support and the auxiliary support by a clamp. The connecting ring is provided with a bracket that has a through hole that matches the position where the guide post is installed. The male screw part protruding from the upper and lower ends of the guide column is penetrated and tightened and connected with a fixing nut, and the top of the guide column is added to the upper end of the lower guide column. Attach the joint bracket, insert the upper guide post into this joint bracket, insert the retaining pin into the joint bracket,
A temporary spiral staircase comprising a bracket protruding from an upper end of a lower guide support and a lower end of an upper guide support, and connecting the brackets with a connection plate.