KR102365058B1 - Construction method of steel stairs and thereby unsupported curved steel stairs - Google Patents

Abstract

The present invention relates to a method for constructing a non-column curved steel staircase and to the structure of a non-column curved steel staircase constructed thereby, the construction method comprising: a) an inner plate and an outer plate forming both sides of the staircase; installing; b) mounting the movable mounting bracket on the upper portions of the inner plate and the outer plate; c) gripping the stepping board on the mobile installation table; d) moving the mobile installation stand to the installation position of the stepping plate; e) step of installing the stepping board; f) completing the installation of the stepping board by repeating the steps of gripping the stepping board, moving the movable mounting table, and installing the stepping board; g) removing the movable mounting bracket and installing a handrail on the inner plate and the outer plate; the non-column curved steel staircase constructed thereby has the inner plate and the outer plate having a curved shape, the inner plate is The roll-formed first inner plate and the second inner plate and the first inner plate and the second inner plate are integrated with a connecting rod that forms an installation hole therebetween and has an H-shaped cross section, and the outer plate is formed with the roll-formed first outer plate and It is characterized in that it is configured to have an H-shaped cross section by being made of a connecting rod that forms an installation hole therebetween while integrating the second outer plate and the first outer plate and the second outer plate.

Description

Construction method of steel stairs and non-column curved steel stairs

The present invention relates to a method of constructing a staircase made of steel and a staircase constructed by the method, and more specifically, a method for constructing a non-post curved steel staircase in which a post for supporting the staircase is not installed. And it relates to the structure of the non-column curved steel staircase constructed by it.

Stairs are structures that can move between floors of a building, and are composed of stepping boards continuously installed at regular intervals along the slope and handrails installed on both sides.

Since the most common structure of stairs has a flat, straight structure, it occupies a lot of space, which is a factor that lowers the space utilization rate, such as forming a dead space in the building.

The above problems of the linear staircase occupying such a large area can be partially solved by the circular staircase shown in FIG. 1 .

1 is an invention of a spiral staircase disclosed by Laid-Open Patent Publication No. 10-2011-0101146, in which a plurality of stepping boards 2 are installed upward at regular intervals while rotating around a post 4, and the stepping board ( 2), one side is fixed to the post (4) and the other side is installed in a structure in which a handrail (3) is installed. Since the stepping plate 4 is installed in such a way that the spiral staircase rotates around the post 4 as described above, the area occupied on the plane is minimized.

However, the step 4 installed while rotating around the post 4 has no choice but to achieve a steep incline, and in particular, the post 4, which is essential to support the load of the entire staircase, is located in the space below the step plate 2 to limit its use.

In addition, although the stairs are installed within the space of the building and function as a three-dimensional sculpture to promote the elegance of the interior, in the case of the above-described spiral staircase in which the stepping board 2 is installed centered on the post 4, its appearance It is not easy to have a staircase with a beautiful geometric structure because the range that can be changed is limited.

KR 10-2011-0101146 A

The present invention is to solve the above problems of the prior art, and in forming a curved staircase made of steel, it has an independent structure without installing a post inside the staircase, thereby minimizing the occurrence of dead space and improving the appearance of the staircase. A method for constructing a non-pillar curved steel staircase that can be changed in various ways to realize a beautiful appearance, is easy to construct, and can promote economic efficiency by minimizing the use of temporary materials, and the curve constructed by it The purpose is to provide a type staircase.

According to the most preferred embodiment of the present invention for solving the above problems, a)

Installing an inner plate and an outer plate to form both sides of the stairs; b) mounting the movable mounting bracket on the upper portions of the inner plate and the outer plate; c) gripping the stepping board on the mobile installation table; d) moving the mobile installation stand to the installation position of the stepping plate; e) installing a stepping board; f) repeating steps c) to e) to complete installation of the stepping board; g) removing the movable mount, and installing a handrail on the inner plate and the outer plate; There is provided a construction method of a steel staircase, characterized in that consisting of.

Here, the movable mounting unit includes a moving part that moves up and down along the inner and outer plates, a holding suspension part for holding and suspending the stepping plate, and a position set after guiding the movement of the moving part by being located above the inner plate and the outer plate. It may be made of a fixing part to prevent movement in the.

In addition, the moving unit, the rotating body positioned between the inner plate and the outer plate, and a pair of moving support installed at both ends of the rotating body to adjust the distance according to the width between the inner plate and the outer plate, , in step d), when the fixing unit is moved in a state where the height of the upper end of the inner plate and the outer plate is the same, and then the movable mounting table is located at a required point, the fixing part can be temporarily fixed to the inner plate and the outer plate. .

In addition, the gripping suspension part consists of a gripper for gripping the stepping plate, and a pair of suspension rods that are installed to enable vertical movement independently on both sides of the movable part by suspending the gripper on the moving part, the step e) The height of both ends of the step plate can be adjusted using a pair of suspension rods so that both ends of the step board are inclined as much as set.

In addition, the fixing part includes a first support plate installed on the side of the moving part, a second support plate spaced apart from the first support plate, and a second support plate positioned above the inner plate and the outer plate while connecting the first and second support plates. It may consist of 3 support plates.

According to another embodiment of the present invention, the inner plate and the outer plate have a curved shape, and the inner plate includes the roll-formed first inner plate and the second inner plate, and the first inner plate and the second inner plate while integrating them. It consists of a connecting rod that forms an installation hole between them, has an H-shaped cross section, and the outer plate integrates the roll-formed first and second outer plates and between the first and second outer plates and has an installation hole between them. It is made of a connecting rod to form a non-column curved steel staircase, characterized in that it is configured to have an H-shaped cross section.

At this time, a transparent handrail may be inserted into the installation hole located above the connecting rod among the installation holes, and the LED light may be inserted and installed in the installation hole located below the connecting rod among the installation holes.

In the method for constructing a steel staircase according to the present invention, since the assembly construction of the staircase is performed in a state in which a heavy steel stepping plate is suspended using the inner and outer plates constituting both sides of the step, temporary members such as dongbari to support the stepping board As there is no need to use a steel stair, it is possible to significantly reduce the amount of material used and manpower, making it possible to construct safe and economical steel stairs.

In addition, the construction method of the steel staircase according to the present invention is accurately transported to the position where the stepping board should be installed by the moving part of the movable installation table, and the inclination angle at which the stepping board should be installed is accurately made by the gripping suspension part of the movable installation table. Since the welding of the inner and outer plates is performed while the stepping plate is kept in the correct state as described above by the fixing part of the installation table, it is possible to safely and quickly construct a high-quality steel staircase. .

In addition, in the non-post curved steel staircase according to the present invention, the inner and outer plates on both sides act as bending members and omit the posts supporting them, thereby reducing dead space and achieving high space utilization, and various curves It enables the design of the shape so that it can be used as a beautiful three-dimensional sculpture in the interior.

1 is a cross-sectional view of a curved staircase according to the prior art.
2 is a perspective view of each of the non-pole curved steel stairs of the present invention.
3 is a cut-away perspective view of the non-pole curved steel staircase.
Figure 4 is a perspective view of a moving installation table used in the steel staircase construction method of the present invention.
5 is a front view of the moving part of the moving mount.
6 is a cross-sectional view of the gripping body operation of the gripping suspension unit.
7 is a cross-sectional view of the operation of the suspension rod of the gripping suspension unit.
8 is a front view of the leveling check stand installed on the suspension rod.
9 is a cross-sectional view of a fixing part of the movable mounting table.
10 to 16 are perspective and front views showing the construction process of the steel stairs according to the invention in each step.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in the description of the present invention, in the case of obscuring or obscuring the technical idea of the present invention due to the detailed description of the known configuration, the description of the known configuration will be omitted.

2 is a view showing various shapes of the non-column curved steel stairs 100 installed by the construction method of the present invention, and FIG. 3 is a cut-away perspective view of an embodiment of the non-column curved steel stairs 100, and FIGS. 9 is a perspective view and a cross-sectional view for explaining the structure and operation relationship of the movable mounting table 200 applied to the construction method of the present invention. Also, Figures 10 to 16 show each step of the construction method of the present invention.

For example, in the steel staircase installed by the construction method of the present invention, the inner plate 110 and the outer plate 120 that form both sides of the staircase have a curved shape while themselves supporting the load of the staircase. By doing this, it is possible to omit the post normally installed to support the load of the stairs in a circular staircase.

Accordingly, it is possible to improve the utilization rate of the indoor space, and since stairs of various three-dimensional shapes can be designed, it can be used as a three-dimensional sculpture of beautiful decoration. In addition, the non-column curved steel staircase 100 composed of a single steel plate of the inner plate 110 and the outer plate 120 may also be installed by the construction method of the present invention, but as shown in FIG. 3 , the inner plate ( 110) is made of a double steel plate having an H-shaped cross-section in which the first inner plate 111 and the second inner plate 112 are integrated by the connecting rod 130, and the outer plate 120 is also formed with the first outer plate 121 and The second outer plate 122 is integrated by the connecting rod 130 to make a double steel plate having an H-shaped cross section, so that the structural aspect of increasing the flexural rigidity and the construction aspect such as the ease of installation of the handrail 150 and , it is possible to have many advantages in terms of decoration, such as providing an installation space of the LED lighting means (160).

Herein, the inner plate 110 and the outer plate 120 of the latter will be mainly described with respect to the non-column curved steel staircase 100 composed of a double steel plate.

The construction method of the present invention for the non-column curved steel staircase 100 is used as a temporary rail during the construction process for the inner plate 110 and the outer plate 120, which serve as bending members, and the inner and outer plates While moving along (110, 120), the step plate 140 is suspended and transported to the installation site, and the step plate 140 is fixed to the inner plate 110 and the outer plate 120 until it is fixedly installed. (200) is used.

As shown in FIG. 4 , the movable installation table 200 is largely composed of a holding and suspension unit 220 , a moving unit 210 , and a fixing unit 230 , and is inside by a power means such as a winch means located on the upper part. It moves up and down in an oblique direction riding on each upper end of the plate 110 and the outer plate 120 .

The moving part 210 is positioned between the inner plate 110 and the outer plate 120 and serves to support the holding suspension part 220 while moving by the fixing part 230 . This moving part 210 is installed at both ends of the rotating body 210A and the rotating body 210A positioned between the inner plate 110 and the outer plate 120, the inner plate 110 and the outer plate It consists of a movable support (210B) that allows the length of the movable part 210 to expand and contract to fit the width between the 120.

The rotating body 210A includes a body portion 212 having an accommodation space 211 and a first fastening hole 212a formed in communication with the accommodation space 211 at both ends of the body portion 212 . A pair of length adjustment rods 214 and the length adjustment rod ( It is formed at the outer end of the 214 and consists of a support bracket 215 having a second fastening hole 215a.

As shown in FIG. 5 , the moving part 210 can expand and contract according to the width between the inner plate 110 and the outer plate 120 to adjust the length of the moving part 210 . To this end, a female screw is formed in the first fastening hole 212a, and a male screw is formed in the length adjusting rod 214. At this time, the first fastening hole 212a provided at both ends of the body 212 and a pair of The screw fastening direction of the length adjustment rod 214 is made symmetrical to each other.

Accordingly, the length of the pair of length adjustment rods 214 is changed according to the rotational direction of the rotating body 210A in a state in which the pair of length adjustment rods 214 are inserted into each of the first fastening holes 212a and inserted into the receiving space 211, and the inner The length of the moving part 210 can be adjusted according to the width between the plate 110 and the outer plate 120 .

At this time, an opening 213 through which the receiving space 211 provided inside the body 212 can be visually confirmed may be further provided. The opening 213 allows the user to visually check the arrangement state of the length adjustment rod 214 of the movable support 210B inserted into the receiving space 211 .

As shown in Fig. 4, the gripping suspension unit 220 holds and suspends the stepping plate 140 to be installed. It consists of a pair of suspension rods 220B for suspending 220A to the moving unit 210 .

The holding body 220A is to be installed between the inner plate 110 and the outer plate 120 by holding the stepping plate 140 as described above, and the upper plate 221 in contact with the lower end of the suspension rod 220B. and a mounting plate 222 formed to be spaced apart from the top plate 221 , and a connecting plate 223 connecting the top plate 221 and the mounting plate 222 .

As shown in FIG. 6, the holding body 220A has a step plate 140 mounted on the mounting plate 222. At this time, in order to prevent the step plate 140 from being separated from the holding plate 222 during operation, the upper plate ( 221) is provided with a third fastening hole (221a), the third fastening hole (221a) is provided with a pressing rod (224). In addition, the third fastening hole 221a and the pressing rod 224 are coupled by screw fastening, and when the pressing rod 224 is rotated, the upper portion of the step plate 140 mounted on the mounting plate 222 is pressed and fixed.

At this time, a third handle 226 is provided on the upper portion of the pressing rod 224 to facilitate rotation of the pressing rod 224, and a pressing plate 225 is provided at the lower end of the pressing rod 224 to provide a stepping plate ( 140) to improve the fixation force by missing the frictional force. In addition, an adhesion pad may be further provided on the lower surface of the pressure plate 225 to further increase the adhesion force.

In addition, the length of the mounting plate 222 is formed to be longer than the length of the upper plate 221 so that the stepping plates 140 having respective widths can be installed when the stepping plates 140 are mounted.

A pair of suspension rods 220B for suspending the holding body 220A to the moving part 210, as shown in FIG. 7, a pair of suspension rods 220B is a pair of moving support 210B. As coupled to the second fastening hole 215a provided in the support bracket 215 of the

Therefore, the lengths L1 and L2 of the pair of suspension rods 220B are made to be the same to make the stepping plate 140 mounted on the mounting plate 222 parallel, or each of the suspension lengths L1, By making L2) different from each other, the stepping plate 140 mounted on the base plate may be inclined.

In addition, the upper end of the suspension bar 220B of the gripping suspension 220 installed in the moving unit 210 is installed through the second fastening hole 215a of the moving support 210B, for this purpose, the second fastening hole 215a ) is formed with a female thread, and by forming a corresponding male thread on the suspension rod 220B, the suspension rod 220B is rotated to allow the mounting plate 222 located at the end thereof to move up and down, so that the above-described stepping plate ( 140) may enable adjustment of the inclination angle. At this time, the suspension rod 220B and the upper plate 221 should be connected in a mutually idle structure. In addition, a first handle 229 may be further provided on the upper portion of the suspension rod 220B to easily rotate the suspension rod 220B. As shown, it is possible to further include a leveling check stand 228 fixed together on both sides of the suspension rod (220B). The leveling checker 228 is provided with a fixing bracket 227 installed in a non-rotating structure with respect to the suspension rod 220B, and a leveling checker 228 is installed between the fixing bracket 227 .

The fixing unit 230 is installed on both sides of the moving unit 210 so that the moving unit 210 does not move at a set position while a subsequent operation is in progress, thereby following the inner plate 110 and the outer plate 120 . To facilitate the fixed installation work of the stepping plate 140 for. The fixing part 230 is formed to be spaced apart from the first support plate 231 coupled to the side of the support bracket 215 of the movable support 210B, and the first support plate 231, as shown in FIG. 9 . The second support plate 232 that becomes a second support plate 232, and a third support plate 233 that connects the first support plate 231 and the second support plate 232 and is mounted on the inner plate 110 and the outer plate 120 to move. ) is made of

In addition, when the moving part 210 is positioned at a set point, the fixing part 230 is fixed to each of the inner plate 110 and the outer plate 120, and for this purpose, the second support plate 232 has a fourth fastener. A ball 232a is formed, and a close contact rod 234 is provided in the fourth fastening hole 232a, and a contact plate 235 that is in close contact with the inner and outer plates 110 and 120 inside the contact bar 234 is provided. this is provided

In addition, the fourth fastening hole 232a and the contact rod 234 are coupled by screw fastening, so that they can be closely attached to or separated from the inner and outer plates 110 and 120 according to the rotation of the contact rod 234 . At this time, a second handle 236 is provided on the outer side of the contact rod 234 to facilitate the rotating operation.

In addition, the first support plate 231 coupled to the support bracket 215 of the movable support 210B has a mutual idle structure, so that even when the pair of suspension rods 220B rotate, each inner plate 110 and To be able to adjust to fit the inclination of the outer plate (120).

Next, a method for constructing a steel staircase of the present invention using the above-described movable installation table 200 will be described.

The construction of the forced staircase according to the present invention includes: a) installing the inner and outer plates 110 and 120 , b) mounting the movable installation platform 200 , c) holding the stepping plate 140 on the movable installation table 200 . step, d) moving the movable mounting base 200, e) installing the stepping plate 140, f) completing the installation of the stepping board through repeated work, g) installing the handrail 150 It depends on the method of proceeding in sequence. This will be described in detail as follows.

a) installing the inner and outer plates 110 and 120 (FIG. 10);

First, the inner plate 110 and the outer plate 120 that form both sides of the stairs are installed. The inner plate 110 and the outer plate 120 may have a constant spacing therebetween, and the specific shape of the surface is not a problem. In addition, it does not matter whether they are composed of a single steel plate or a double steel plate. Of course, when the double steel plate and the connecting rod 130 installed therebetween have an H-shaped cross-section, it is possible to have structurally higher flexural rigidity as described above.

The inner and outer plates 110 and 120 having the H-shaped cross section have installation holes S1 and S2 formed at the upper and lower sides around the connecting rod 130, so the handrail 150 or LED lighting means 160, etc. Make the installation work easy.

The inner plate 110 and the outer plate 120 function as a rail for the movement of the movable mounting table 200 installed in the next step. Therefore, since the installed inner plate 110 and outer plate 120 must maintain structural stability until the stair construction is completed, the inner plate 110 and the outer plate ( In order to structurally integrate 120 , a stepping plate 140 or a fixed support member (not shown) may be installed in this step.

b) the step of mounting the mobile installation unit 200 (FIG. 11);

When the installation of the inner and outer plates 110 and 120 is completed, the movable mounting table 200 is mounted on the inner plate 110 and the outer plate 120 . The movable installation table 200 includes the third support plate 233 located between the first support plate 231 and the second support plate 232 of the fixed part 230 installed on both sides of the movable part 210, the inner and outer plates ( 110, 120) while being mounted on the top, it is possible to move up and down along the ramp. The movement of the movable installation table 200 is by a power means (not shown) such as a winch installed on the upper part.

In addition, a sliding pad or roller is provided on the inner surface of the third support plate 233 in order to reduce friction between the third support plate 233 and the inner and outer plates 110 and 120, and the third support plate 233 and the inner and outer plates It is also possible to reduce the frictional force with (110, 120) so that it can be moved more easily.

c) holding the stepping plate 140 to the movable installation table 200 (FIG. 12);

The stepping plate 140 is gripped by the movable installation table 200 so that the stepping plate 140 can be transported by the movement of the movable installation table 200 . After securing the distance between the holder and the pressing plate 225 by rotating the pressing rod 224 provided on the upper plate 221 of the holding body 220A, the stepping plate 140 is mounted on the holder, and then the pressing rod The step 224 is reversely tightened to prevent the step plate 140 from being separated from the holding body 220A by the pressure plate 225 pressing the step plate 140 .

At this time, by using the suspension rod 220B to adjust the height and the inclination angle at which the stepping board 140 is installed in advance, the stepping board 140 is directly installed without a separate height adjustment process in the installation step of the stepping board 140 to be described later. Fixed installation work can be advanced.

d) moving the movable mounting base 200 (FIG. 13);

When the gripping of the stepping plate 140 with respect to the gripper 220A is completed, the movable mounting table 200 is moved to the installation position of the stepping board 140 . It is preferable that the stepping plate 140 be installed gradually downward from the top of the stairs, or gradually upward from the bottom, and where to start may vary depending on sage conditions.

However, when the stepping board 140 is first installed at the midpoint for structural integrity of the inner plate 110 and the outer plate 120 in step a), the stepping plate 140 is transported by the movable installation table 200 . During the process, the holding body 220A may be temporarily moved upward by adjusting the suspension lengths L1 and L2 by the suspension rod 220B so that the holding body 220A is not caught on the first installed stepping plate 140 .

e) installing the step plate 140 (FIG. 14);

When the moving mounting base 200 is fixed so as not to move at the installation plan point of the stepping board 140, both ends of the stepping board 140 are suspended and supported by the moving mounting base 200 with the inner plate 110 and the outer plate ( 120) and fix it. The above-mentioned attachment and fixing may be made by a bolting method or by a welding operation.

At this time, by using a pair of suspension rods 220B installed on the movable support 210B installed on both sides of the movable body, the installation height of the stepping plate 140 is adjusted, and the height of both ends of the stepping board 140 is inclined as much as set. It is possible to adjust the installation angle of the stepping plate 140 so as to be lowered.

Since the stepping plate 140 installation work in this step is performed without installing a temporary support member such as a dongbari in the lower part, the temporary work process is omitted and the construction period is shortened. This has the effect of reducing construction costs such as material and labor costs.

In addition, since the installation operation of the stepping plate 140 is performed while being placed at an accurate position and angle without separately holding the stepping board 140 , high construction precision can be achieved.

f) completing the installation of the stepping plate 140 through repeated operations (FIG. 15);

By repeating each step of gripping the step 140 in step c) to installing the step 140 in step e), installation of the step 140 for all steps of the stair is completed.

g) installing the handrail 150 (FIG. 16);

When the installation of the stepping board 140 for all steps of the stairway is completed, the movable installation table 200 is removed, and the handrail 150 is installed on the inner plate 110 and the outer plate 120 . At this time, the inner plate 110 is roll-formed, and the first inner plate 111 and the second inner plate 112 having a curved surface are made of an H-shaped cross section integrated by the connecting rod 130 , and the outer plate 120 is also When the first outer plate 121 and the second outer plate 122, which are roll-formed and have a curved shape, are formed of an H-shaped cross-section integrated by the connecting rod 130, they have an installation hole ( S1, S2) is formed, the installation work of the handrail 150 is easily completed by simply inserting a handrail member such as a transparent handrail 150 made of tempered glass into the installation hole S1 located above the bar. can do it

Also, the installation hole S2 located under the connecting rod 130 can be used as a space for decorating the stairs with a beautiful three-dimensional sculpture, such as using it as an installation space for the LED lighting means 160 .

In the above, the present invention has been described in detail with reference to specific embodiments, but the embodiments are merely examples for easy understanding of the present invention. It is self-evident that it can be implemented with various modifications within. Accordingly, such modifications will be said to be within the scope of the present invention as described in the claims.

100 ; Non-Column Curved Steel Stairs 110 ; inner plate
111; first inner plate 112 ; 2nd inner plate
120 ; outer plate 121 ; 1st outer plate
122; second outer plate 130 ; connecting rod
140 ; step 150 ; Handrail
160 ; LED lighting means 200 ; mobile installation stand
210; moving part 210A; rotating body
211 ; accommodating space 212 ; body part
212a; first fastening hole 213; opening
210B; mobile support 214 ; length adjustment bar
215 ; support bracket 215a; 2nd fastening hole
220 ; Gripping suspension 220A ; holding body
221; top plate 221a; 3rd fastener
222; Mounting plate 223 ; connection plate
224; pressure rod 225 ; platen
226; third handle 220B ; Suspension Bong
227; Fixing bracket 228 ; leveling check
230 ; fixing part 231 ; 1st support plate
232 ; second support plate 232a; 4 fastening hole
233 ; third support plate 234 ; sticking rod
234; adhesion plate 236 ; 2nd handle

Claims (13)

As a method of constructing a staircase,
a) installing the inner plate 110 and the outer plate 120 to form both sides of the stairs;
b) mounting the movable mounting base 200 on the inner plate 110 and the outer plate 120;
c) holding the stepping plate 140 to the movable installation table 200;
d) moving the movable installation table 200 to the installation position of the stepping plate 140;
e) installing a stepping plate 140 ;
f) repeating steps c) to e) to complete installation of the stepping board 140 ;
g) removing the moving mount 200, and installing the handrail 150 on the inner plate 110 and the outer plate 120; made up of
The movable mounting base 200 includes a movable part 210 moving up and down along the inner plate 110 and the outer plate 120 , a gripping suspension part 220 for gripping and suspending the stepping plate 140 , and the inner side It is located on the plate 110 and the outer plate 120 and is composed of a fixing part 230 that guides the movement of the moving part 210 and prevents it from moving at a set position,
The moving part 210 is installed on both sides of the rotating body 210A and the rotating body 210A located between the inner plate 110 and the outer plate 120, the inner plate 110 and the outer side. Consists of a pair of movable support 210B for adjusting the length of the movable part 210 according to the width between the plates 120,
In step d), after moving the fixing part 230 in a state where the height of the upper points of the inner plate 110 and the outer plate 120 is the same, when the movable mounting base 200 is positioned at a set point, the fixing part 230 ) of the steel staircase construction method, characterized in that it includes the process of temporarily fixing the inner plate (110) and the outer plate (120). delete delete According to claim 1,
The rotating body 210A includes a body portion 212 having an accommodation space 211 and a first fastening hole 212a formed in communication with the accommodation space 211 at both ends of the body portion 212 . under,
The movable support 210B is formed at the outer end of the pair of length adjustment rods 214 coupled to the first fastening hole 212a and the length adjustment rod 214 and has a second fastening hole 215a. Steel stairs construction method, characterized in that made of a support bracket (215). 5. The method of claim 4,
A female screw is formed in the first fastening hole 212a of the rotating body 210A,
A male screw is formed in the length adjustment rod 214 of the movable support 210B,
The screw fastening direction of the first fastening hole (212a) and the length adjustment rod (214) is a steel staircase construction method, characterized in that made symmetrically at both ends of the rotating body (210A). The method of claim 1,
The holding suspension unit 220 is configured to suspend the holding body 220A for holding the stepping plate 140 and the holding body 220A to the moving unit 210, and independently up and down on both sides of the moving unit 210. Consists of a pair of suspension bars (220B) installed to be movable,
The step e) includes a process of adjusting the height of both ends of the stepping board 140 using a pair of suspension rods 220B so that both ends of the stepping board 140 are inclined as much as set. How to construct a steel staircase. 7. The method of claim 6,
The holding body 220A includes a top plate 221 in contact with the lower end of the suspension rod 220B, a mounting plate 222 formed to be spaced apart from the top plate 221 , and the top plate 221 and the mounting plate 222 . Steel stairs construction method, characterized in that consisting of a connecting plate (223) for connecting the. 8. The method of claim 7,
The upper plate 221 of the holding body 220A is provided with a third fastening hole 221a, the third fastening hole 221a is provided with a pressing rod 224, and a pressing plate is provided at the lower end of the pressing rod 224. (225) Steel stairs construction method, characterized in that provided. The method of claim 1,
The fixed part 230 includes a first support plate 231 installed on the moving part 210 , a second support plate 232 spaced apart from the first support plate 231 , and the first support plate 231 ). and the second support plate 232, while connecting the inner plate 110 and the outer plate 120, the construction method of a steel staircase, characterized in that consisting of a third support plate (233) located on the upper part. 10. The method of claim 9,
A fourth fastening hole 232a is formed in the second support plate 232 , and a close contact rod 234 is provided in the fourth fastening hole 232a , and an adhesion plate 235 is provided at one side of the contact bar 234 . ) construction method of a steel staircase, characterized in that it is provided. As installed by the construction method of any one of claims 1 and 4 to 10,
The inner plate 110 and the outer plate 120 have a curved shape,
The inner plate 110 is integrated between the roll-formed first inner plate 111 and the second inner plate 112, and the first inner plate 111 and the second inner plate 112, and an installation hole S1 therebetween. S2) is made up of a connecting rod 130 that forms, has an H-shaped cross section,
The outer plate 120 integrates the roll-formed first outer plate 121 and the second outer plate 122, and the first outer plate 121 and the second outer plate 122, and an installation hole S1 between them. S2) is made of a connecting rod 130 to form a non-column curved steel staircase, characterized in that it is configured to have an H-shaped cross section. 12. The method of claim 11,
Non-pole curved steel stairs, characterized in that the transparent handrail 150 is inserted into the installation hole (S1) located above the connecting rod 130 among the installation holes (S1, S2). 12. The method of claim 11,
Among the installation holes (S1, S2), the LED lighting means 160 is inserted into the installation hole (S2) located at the lower part of the connecting rod.

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