KR102154517B1 - Modular steel stair structure and construction method using the same - Google Patents

Abstract

Disclosed are a modularized steel stair structure and a construction method thereof. Provided in an aspect of the present invention is a steel stair structure, which comprises: a support beam obliquely arranged between stories; and a plurality of stair units arranged and assembled in the longitudinal direction of the support beam. In the support beam, a plurality of mounting grooves are provided on the upper surface thereof. The plurality of mounting grooves are arranged to be spaced apart at a predetermined interval along the longitudinal direction of the support beam. The stair units comprise: an upper plate unit; a side plate unit of which the upper end is rotatably fastened to the front end of the upper plate unit around a first hinge shaft in left-and-right directions; a first connecting plate rotatably fastened to the lower end of the side plate unit around a second hinge shaft in left-and-right directions; and a second connecting plate rotatably fastened to the rear end of the upper plate unit around a third hinge shaft in left-and-right directions. The first and second connecting plates comprise: a guide rib protruding from one surface to be fastened to the mounting grooves; and a guide groove concavely recessed in a shape corresponding to the guide rib on the opposite surface to the one surface. Therefore, time and costs required for construction can be reduced.

Description

Modular steel staircase structure and its construction method {MODULAR STEEL STAIR STRUCTURE AND CONSTRUCTION METHOD USING THE SAME}

The present invention relates to a steel staircase structure and a construction method thereof, and more particularly, to a steel staircase structure and a construction method thereof that can be more conveniently constructed at low cost using a modular method.

In general, in a multi-storey building or structure, a staircase structure is constructed to move between each floor. In general, stair structures provided inside buildings are constructed in an integrated form with the building structure through concrete, but in the case of stair structures installed outside the building or provided in outdoor structures, steel stairs are used for reasons of construction convenience, etc. . In addition, in recent years, a staircase structure provided indoors for the purpose of aesthetics may also be made of steel.

However, most of the steel staircase structures as described above are custom-made to suit the design structure of a specific building or structure, and are individually constructed. In addition, some prefabricated steel staircase structures have appeared in recent years, but their application width is narrow depending on the installation environment, and there are many parts that require operator intervention, such as welding, so that the effectiveness is poor.

Embodiments of the present invention are to provide a steel staircase structure and a construction method thereof that can be more easily constructed by modularizing each component of the staircase structure, and further reduce the time and cost required for construction.

According to an aspect of the present invention, the support beam is obliquely disposed between each layer; And a plurality of stair units assembled and arranged along the longitudinal direction of the support beam, wherein the support beam includes a plurality of seating grooves on an upper surface, and the plurality of seating grooves define a longitudinal direction of the support beam. It is spaced apart from each other at predetermined intervals, and the stair unit includes: a top plate; A side plate portion whose upper end is rotatably fastened to a front end of the upper plate portion about a first hinge axis in a left-right direction; A first connection plate rotatably fastened to a lower end of the side plate about a second hinge axis in a left and right direction; And a second connection plate that is rotatably fastened to the rear end of the upper plate about a third hinge axis in a left-right direction, wherein the first and second connection plates are guides formed protruding on one surface to be fastened to the seating groove. live; And a guide groove recessed in a shape corresponding to the guide rib on the opposite surface of the one surface. A steel staircase structure may be provided.

According to another aspect of the present invention, it relates to a construction method of constructing the steel staircase structure, comprising: transferring a plurality of staircase units to a construction location; The step of installing the support beam inclined between each layer for construction; Disposing the plurality of step units on the support beam; And fixing each of the stair units to the support beam, wherein the transferring step includes the step of transferring the stair units in a state in which the stair units are arranged in a flat shape, and the plurality of stair units are stacked up and down. Including, the arranging step, wherein the guide ribs of the first and second connecting plates provided in each of the stair units are seated in a seating groove formed in the support beam, so that each stair unit is seated and supported on the upper surface of the support beam Including, wherein the fixing step comprises the step of fastening the fixing means to the first and second connection plates, respectively, and fixing the first and second connection plates to the support beam, the construction method of a steel staircase structure Can be provided.

The steel staircase structure and its construction method according to the embodiments of the present invention can be easily stored or transported by modularizing each component of a steel staircase structure such as a staircase unit and a handrail unit. By enabling the construction of the process, the cost and time required for construction can be significantly reduced.

1 is a schematic side view of a steel staircase structure according to an embodiment of the present invention.
2 is a partial enlarged view of the steel staircase structure shown in FIG. 1.
3 is a schematic perspective view of the stair unit shown in FIG. 1.
4 is a flow chart showing a construction method of the steel staircase structure shown in FIG.
5 is a schematic side view showing an installation form of the steel staircase structure shown in FIG. 1.
6 is a schematic side view showing a loading form of the stair unit shown in FIG. 1.
7 is a schematic side view showing a state in which a handrail unit is added to the steel staircase structure shown in FIG. 1.
8 is a schematic diagram showing an embodiment of a cover unit.
9 is a schematic view showing a lower portion of the pivot arm shown in FIG. 7.
10 is a flow chart showing a construction method of the handrail unit shown in FIG. 7.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be noted that the following embodiments are provided to aid understanding of the present invention, and the scope of the present invention is not limited to the following embodiments. The following embodiments are provided to more completely describe the present invention to a person with average knowledge in the relevant technical field, and detailed descriptions of known configurations that are determined to unnecessarily obscure the technical subject matter of the present invention are provided. I will omit it.

1 is a schematic side view of a steel staircase structure according to an embodiment of the present invention.

For convenience of description, hereinafter, the x-axis direction is referred to as the front-rear direction, the y-axis direction as the left-right direction, and the z-axis direction as the vertical direction, based on the coordinate axis shown in FIG.

Referring to FIG. 1, a steel staircase structure (hereinafter, referred to as'structure 100') of the present embodiment may include a support beam 110.

The support beam 110 may have a predetermined cross-sectional shape and extend in the longitudinal direction. For example, the support beam 110 may have a substantially rectangular shape with an outer cross-section as shown. However, the support beam 110 may be of a shape in which the stair unit 120 can be properly mounted and supported on the upper surface, as will be described later, and is not necessarily limited to the exemplified square-shaped cross section.

The support beam 110 may be formed of a material and structure having sufficient rigidity to properly support the structure 100 and an external load applied thereto. For example, the support beam 110 may be formed of a metal such as steel.

The support beam 110 may be provided with a pair of at least left and right. A pair of support beams 110 may be spaced apart from each other to the left and right to support the left and right ends of the stair unit 120. If necessary, the support beam 110 may be composed of a plurality of three or more, and a plurality of support beams 110 are arranged left and right spaced apart to support the stair unit 120. For example, the number of support beams 110 may be appropriately selected corresponding to the left and right widths of the stair unit 120.

The support beam 110 may be fixedly installed by being inclined at a predetermined angle according to an installation location or condition. Each end of the support beam 110 may be fixedly supported by being installed on a predetermined support structure disposed on each layer. For example, each end of the support beam 110 may be rigidly fixedly installed on the floor or wall surface of the corresponding layer, or a support that can replace it.

A plurality of seating grooves 111 may be provided on an upper surface of the support beam 110. The seating groove 111 may be formed such that the upper surface of the support beam 110 is recessed to the lower side by a predetermined degree. In addition, the seating groove 111 may be formed to extend from the upper surface of the support beam 110 in the left-right direction, so that the left and right side ends may be opened.

A plurality of seating grooves 111 may be spaced apart at predetermined intervals along the length direction of the support beam 110. The number or spacing of the seating grooves 111 is not particularly limited, but the seating grooves 111 have a function of guiding the installation position of the stair unit 120 as described later, so it is preferable that a plurality of seating grooves 111 are formed at adjacent intervals. .

2 is a partial enlarged view of the steel staircase structure shown in FIG. 1.

Referring to FIG. 2, preferably, the width W1 of the upper end of the seating groove 111 may be formed to be greater than the width W2 of the lower end by a predetermined degree. This is to allow the stair unit 120 to be more smoothly seated and disposed in the seating groove 111. In particular, in the structure 100 of the present embodiment, the arrangement angle of the support beam 110 may be changed according to the installation condition, and accordingly, the arrangement angle of the guide rib 123a to be described later may be partially changed. The shape of the seating groove 111 can help in installation. That is, the seating groove 111 has a width W1 of the upper end larger than the width W2 of the lower end, so that the guide rib 123a can be smoothly seated and disposed despite the arrangement angle of the stair unit 120. I can.

Referring back to FIG. 1, the structure 100 of the present embodiment may include a stair unit 120.

The stair unit 120 is for forming each step, and may be fastened to and supported by the support beam 110. Specifically, the stair unit 120 is fastened to the support beam 110 disposed at a position corresponding to one end (left end), and the other end (right end) is fastened to the support beam 110 on the opposite side, thereby supporting It may be seated and supported on the top of the beam 110.

The stair unit 120 may be provided in plural. The plurality of stair units 120 may be sequentially fastened along the support beam 110 to form a stair.

The stair unit 120 may be formed of a material and structure having sufficient rigidity to adequately support an external load. For example, the stair unit 120 may be formed of metal such as steel.

3 is a schematic perspective view of the stair unit shown in FIG. 1.

1 and 3, the stair unit 120 may include an upper plate portion 121.

The upper plate portion 121 may form a support surface of a layered structure. The upper plate portion 121 may be formed in a rectangular plate shape having a predetermined width. Preferably, the upper plate portion 121 may be formed in a rectangular plate shape in which the left and right lengths are substantially larger than the front and rear lengths by a predetermined degree.

The upper plate portion 121 may be provided with an anti-slip pad 121a on the upper surface. The anti-slip pad 121a may have a predetermined cross-sectional shape and may be formed to extend left and right from the upper surface of the upper plate portion 121. As illustrated, the anti-slip pad 121a has a substantially semicircular cross-sectional shape and is formed to extend left and right.

The anti-slip pad 121a may be integrally formed on the upper plate portion 121 or may be manufactured separately from the upper plate portion 121 to be assembled and fastened. In the latter case, the anti-slip pad 121a may be formed of a material different from the upper plate portion 121 such as rubber or plastic.

A plurality of slip prevention pads 121a may be provided. The plurality of anti-slip pads 121a may be spaced apart back and forth on the upper surface of the upper plate portion 121.

A pad groove 121b corresponding to the slip prevention pad 121a may be provided on a lower surface of the upper plate portion 121. The pad groove 121b may be disposed on the lower surface of the upper plate 121 to correspond to the slip prevention pad 121a, and has a predetermined shape in which the slip prevention pad 121a can be accommodated, and left and right from the lower surface of the upper plate 121 Can be formed to extend. As illustrated, the anti-slip pad 121a protrudes with a substantially semicircular cross-sectional shape, and the pad groove 121b is recessed into a substantially semicircular groove corresponding thereto.

A plurality of pad grooves 121b may be provided to correspond to the plurality of slip prevention pads 121a. The plurality of pad grooves 121b may be spaced apart back and forth on the lower surface of the upper plate portion 121. The spacing or position between the plurality of pad grooves 121b corresponds to the plurality of anti-slip pads 121a disposed on the upper surface of the upper plate portion 121.

Meanwhile, the stair unit 120 may include a side plate part 122.

The side plate part 122 may be hinged to the front end of the upper plate part 121. That is, the side plate part 122 may be fastened to the front end of the upper plate part 121 so as to be rotatable about the first hinge axis H1 by a predetermined degree.

The side plate part 122 is for forming a step of a layered structure, and may be formed in a rectangular plate shape having a predetermined width. The left and right lengths of the side plate portion 122 may be formed to correspond to the left and right lengths of the upper plate portion 121. However, the upper and lower heights of the side plate portion 122 need not necessarily be formed to correspond to the front and rear lengths of the upper plate portion 121. As illustrated, the upper and lower heights of the side plate portion 122 are formed to be smaller than the front and rear lengths of the upper plate portion 121 by a predetermined degree.

In the installation form, the side plate portion 122 may be disposed in a vertical direction at the front end of the upper plate portion 121 in general. However, as will be described later, the fastening position of the side plate part 122 may be appropriately changed according to the slope of the stairs, and the vertical direction does not necessarily mean only a direction orthogonal to the upper plate part 121. For example, the side plate part 122 may be mounted and disposed to form a predetermined angle between the upper plate part 121 and the upper plate part 121.

Meanwhile, the stair unit 120 may include a first connection plate 123.

The first connection plate 123 may be hinged to the bottom of the side plate part 122. That is, the first connection plate 123 may be fastened to the lower end of the side plate part 122 so as to be rotatable about the second hinge axis H2 by a predetermined degree. Therefore, in the above-described side plate part 122, the upper end is fastened to the front end of the upper plate part 121 by the first hinge axis H1, and the lower end is fastened to the front end of the first connection plate 123 by the second hinge axis H2. It can be mounted and arranged in a form.

The first connection plate 123 is for installation to the support beam 110 and may be formed in a rectangular plate shape having a predetermined width. The left and right lengths of the first connection plate 123 may be formed to correspond to the left and right lengths of the side plate portion 122. The front and rear lengths of the first connection plate 123 are not limited to a specific value or length, and may generally be formed to be smaller than the front and rear lengths of the upper plate portion 121 or the upper and lower heights of the side plate portion 122 described above. This is because, as shown, the first connection plate 123 is disposed in an inner space formed by the upper plate portion 121 and the side plate portion 122. This can be similarly applied to the second connection plate 124 to be described later.

The first connection plate 123 may have a guide rib 123a protruding from one surface disposed toward the support beam 110. The guide ribs 123a may have a predetermined cross-sectional shape and may extend left and right on one surface of the first connection plate 123. Meanwhile, the above-mentioned one surface refers to one surface of the first connection plate 123 disposed toward the support beam 110 when the stair unit 120 is installed.

The first connection plate 123 may have a guide groove 123b formed on a surface opposite to one surface on which the guide rib 123a is formed. The guide groove 123b has a position and shape corresponding to the guide rib 123a, and may be formed on the opposite surface of the guide rib 123a.

The first connection plate 123 may have an installation hole 123c. The installation hole 123c may be formed to penetrate the first connection plate 123 in the thickness direction at a position corresponding to the guide rib 123a and the guide groove 123b.

Referring to FIG. 2 described above, the first connection plate 123 as described above may be mounted and disposed on the upper surface of the support beam 110 and may be fixedly installed to the support beam 110 through the fixing means 123d.

Here, in the first connection plate 123, the guide ribs 123a are disposed to be seated in the seating groove 111 on the upper surface of the support beam 110, so that the position of the first connection plate 123 may be temporarily assembled. That is, the guide rib 123a is seated and disposed in the corresponding seating groove 111, so that the positions of the first connecting plate 123 to the stair unit 120 can be maintained even before fastening the predetermined fixing means 123d. It can be. This makes it easier to install the structure 100 according to the present embodiment.

In addition, preferably, the guide rib 123a formed on the first connection plate 123 has a front and rear width W3 at the base end side that is larger than the front and rear width W4 at the end side, and has a substantially trapezoidal cross-sectional shape. Can have The shape of the guide rib 123a corresponds to that in the above-described mounting groove 111, the width W2 of the lower end is formed to be larger than the width W1 of the upper end by a predetermined amount. In this case, although the arrangement angle of the support beam 110 or the angle at which the first connection plate 123 is fastened to the support beam 110 is varied, the guide rib 123a is properly seated in the seating groove 111 Can be arranged, so that the ease of installation work can be improved.

In addition, in the case of the above, the guide groove 123b on the opposite side corresponding to the guide rib 123a may also have a substantially trapezoidal cross-sectional shape like the guide rib 123a, and may extend left and right.

Referring back to FIGS. 1 and 3, the stair unit 120 may include a second connection plate 124.

The second connection plate 124 may be hinged to the rear end of the upper plate portion 121. That is, the second connection plate 124 may be fastened to the rear end of the upper plate portion 121 so as to be rotatable about the third hinge shaft H3 by a predetermined degree.

The second connection plate 124 is for installation to the support beam 110 and may be formed similarly to the above-described first connection plate 123 only by changing its fastening position. That is, the second connection plate 124 is formed in the shape of a rectangular plate having a predetermined width, and may have a guide rib 123a and a guide groove 123b on one side and the opposite side, respectively, and the support beam 110 It is seated and disposed in the seating groove 111 formed in, and can be assembled and fixed to the support beam 110 through a predetermined fixing means 123d.

4 is a flow chart showing a construction method of the steel staircase structure shown in FIG.

Referring to Figure 4, looking at the construction method of the structure 100 as described above is as follows.

First, the support beam 110 is installed in the installation space. The support beam 110 may be rigidly fixedly installed through the bottom surface, wall surface, support material, etc. of each layer, and may be disposed inclined at a predetermined angle according to a distance or height between each layer. In addition, a plurality of support beams 110 may be spaced apart from each other to the left and right, and generally, a pair of support beams 110 may be installed.

When the support beam 110 is fixedly installed as described above, the stair unit 120 may be installed. The structure 100 of the present embodiment has a structure in which a plurality of stair units 120 are sequentially arranged along the support beam 110, and a plurality of stair units 120 are sequentially or simultaneously bundled in the previously installed support beam 110. Can be installed separately.

The installation method of each stair unit 120 is as follows.

First, an appropriate number of stair units 120 are selected according to the interval between each floor or the arrangement angle of the support beams 110. Thereafter, a plurality of stair units 120 are disposed on the previously installed support beam 110 at predetermined intervals.

Specifically, the first connection plate 123 is temporarily assembled at a predetermined position of the support beam 110. Here, the first connection plate 123 may be guided and temporarily installed to a predetermined assembly position by placing the guide ribs 123a in the seating groove 111 of the support beam 110.

In addition, the second connecting plate 124 is temporarily assembled at a predetermined position spaced apart from the first connecting plate 123. The second connecting plate 124 may also be guided and temporarily installed in an assembly position in a manner similar to that of the first connecting plate 123.

As described above, when the first and second connection plates 123 and 124 are temporarily assembled to a predetermined position on the support beam 110 through the seating groove 111, the stair unit 120 is temporarily fixed in the temporarily assembled position and arrangement form. I can. Accordingly, when a predetermined stair unit 120 is temporarily assembled, the other stair units 120 may be temporarily assembled in a similar manner, either continuously or simultaneously.

On the other hand, when the plurality of stair units 120 are temporarily assembled as described above, the fixing means 123d is fastened between the first and second connecting plates 123 and 124 and the support beam 110, and each stair unit 120 It is completely fixedly installed on the support beam 110. If necessary, the above-described temporary assembly process and the main assembly process may be performed simultaneously and multiple times.

When each stair unit 120 is completely fixed to the support beam 110, a stair in which a plurality of stair units 120 are arranged along the support beam 110 may be completed.

The structure 100 according to the present embodiment can perform the stair construction simply and more quickly as described above. In particular, the structure 100 according to the present embodiment can be constructed by stair construction through a method in which the support beam 110 and a plurality of stair units 120 are assembled and installed, and can be appropriately responded to the interval or distance between floors. It can contribute significantly to reducing cost or time. That is, it is possible to reduce construction cost and time by pre-producing each component in the form of a kind of prefabricated part, and installing it by changing it appropriately according to the construction environment.

5 is a schematic side view showing an installation form of the steel staircase structure shown in FIG. 1.

Referring to FIG. 5, in this embodiment, by changing the number of modular stair units 120 installed, it is possible to appropriately respond to the spacing or distance between each floor, and by changing the installation form of the stair unit 120 It is possible to respond to the height or the arrangement angle of the support beam 110.

Specifically, the structure 100 of this embodiment may have a typical installation form as shown in FIG. 5A.

Here, when the height of each floor or the arrangement angle of the support beam 110 is changed as shown in FIG. 5B, the structure 100 of the present embodiment can respond appropriately by changing the arrangement angle of each stair unit 120. I can. That is, by appropriately rotating the side plate portion 122 relative to the top plate portion 121 and changing the angle between the side plate portion 122 and the top plate portion 121, it is possible to respond to the arrangement angle of the support beam 110 and the like. In addition, even in this case, the first and second connection plates 123 and 124 can be fixedly installed on the support beam 110 in the same manner as in a typical installation form (in the case of FIG. 5 (a)). Despite the change in the angle or arrangement form, it is possible to install the structure 100 through the same working process.

Furthermore, the structure 100 of the present embodiment has significant advantages in transport, storage, and loading. In particular, since the structure 100 of the present embodiment can be more economical when mass-produced in the form of a ready-made product rather than a custom-made method, it will be said that the ease of transport or storage is required.

6 is a schematic side view showing a loading form of the stair unit shown in FIG. 1.

Referring to FIG. 6, the structure 100 of the present embodiment includes a plurality of stair units 120, and storage or loading thereof may be required. In this case, the stair unit 120 rotates the side plates 122 and the first and second connecting plates 123 and 124 around the first to third hinge axes H1, H2, H3, respectively, as shown in FIG. It can be arranged in the same plate shape. That is, in the state shown in FIG. 1 and the like, the upper plate portion 121, the side plate portion 122, and the first and second connecting plates 123 and 124 are rotated to form approximately one plane.

In the above case, the plurality of stair units 120 may be stored or transferred in a vertically stacked form. This is because each stair unit 120 has an approximately flat shape. Therefore, a plurality of stair units 120 can be stored or transferred while maximizing the space utilization.

In addition, in the above, the slip prevention pads 121a provided in each stair unit 120 may contribute to a more stable stacking arrangement of the plurality of stair units 120. Specifically, the anti-slip pad 121a formed on the upper plate 121 may be fastened to the pad groove 121b of the other upper plate 121 stacked on the upper side thereof, and the first and second connection plates 123 and 124 Each of the guide ribs 123a formed in may be fastened to each of the guide grooves 123b of the other first and second connection plates 123 and 124 stacked on the upper side thereof. Therefore, between the stair units 120 stacked up and down, the deviation in the lateral direction may be partially limited by the slip prevention pad 121a, the pad groove 121b, the guide rib 123a, the guide groove 123b, etc. , A more stable stacked structure can be achieved.

7 is a schematic side view showing a state in which a handrail unit is added to the steel staircase structure shown in FIG. 1.

Referring to FIG. 7, if necessary, the structure 100 of the present embodiment may further include a handrail unit 130.

After the plurality of stair units 120 are installed on the aforementioned support beam 110, the handrail unit 130 may be additionally installed on the support beam 110 as necessary to form a handrail.

The handrail unit 130 may include a rail bracket 131. The rail bracket 131 may have a shape of a beam extending in the length direction as a whole. The rail bracket 131 is spaced a predetermined distance above the support beam 110 and is disposed and installed in the front-rear direction to form a handrail.

The rail bracket 131 may have an accommodation space 131a open toward the lower side. As shown, the rail bracket 131 has a'C'-shaped cross section that is substantially opened toward the lower side, and extends back and forth to form an accommodation space 131a.

Meanwhile, the handrail unit 130 may include a pivoting arm 132 hinged to the rail bracket 131. The rotation arm 132 has an upper end disposed in the receiving space 131a inside the rail bracket 131, and may be hinged to the rail bracket 131 with a rotation shaft 132a in the left and right direction.

The rotation arm 132 may be rotated about the rotation shaft 132a with respect to the rail bracket 131 by a predetermined degree. The rotating arm 132 may be disposed in the receiving space 131a or may be rotated downward therefrom to be deployed. That is, the rotation arm 132 is disposed parallel to the length direction of the rail bracket 131 and is inserted into the receiving space 131a under the rail bracket 131 or rotated around the rotation shaft 132a at the top. It can be separated and deployed from the accommodation space (131a).

Preferably, the pivoting arm 132 may be formed in a shape and size corresponding to the receiving space 131a so that it can be properly accommodated and disposed in the receiving space 131a inside the rail bracket 131. As illustrated, the receiving space 131a has a substantially rectangular cross-section, and the rotating arm 132 also has a corresponding rectangular cross-section.

An arm fixing hole 132b may be provided at the lower end of the rotating arm 132. The arm fixing hole 132b is for fastening the lower end of the rotating arm 132 with the support beam 110, and may be fastened to the rail fixing hole 112 formed on the side of the support beam 110. A plurality of rail fixing holes 112 for assembling and fixing the lower end of the rotating arm 132 may be provided on the side of the support beam 110 as described above. The plurality of rail fixing holes 112 may be spaced apart at predetermined intervals along the length direction of the support beam 110. For reference, in the case of FIG. 1 and the like described above, the rail fixing hole 112 is omitted for convenience of illustration.

A plurality of rotating arms 132 may be provided. In other words, a plurality of pivoting arms 132 may be provided on one handrail unit 130 or rail bracket 131. Each of the pivoting arms 132 may have an upper end hinged to the rail bracket 131 as described above, and thus may be formed to be rotatable within a predetermined range.

In the above, the distance between the rotating arms 132 adjacent to the front and rear may be formed to correspond to the length of each rotating arm 132. Therefore, the plurality of pivoting arms 132 are rotated toward the rail bracket 131 and are all inserted into the receiving space 131a, or are pivoted downward therefrom, and are substantially vertically between the support beam 110 and the rail bracket 131 Can be placed as In particular, when a plurality of pivoting arms 132 are inserted and disposed in the receiving space 131a as in the former, the volume of the handrail unit 130 can be minimized, and more convenient storage or transport is possible.

Meanwhile, the handrail unit 130 as described above may be modularized in a form having several pivoting arms 132. That is, the handrail unit 130 has a predetermined length and may include a number of rotating arms 132 corresponding thereto, and a plurality of handrail units are appropriately connected and assembled according to the length of the support beam 110 or the installation environment. Can be used. Such modularization of the handrail unit 130 can facilitate storage, transport, and installation work.

8 is a schematic diagram showing an embodiment of a cover unit.

Referring to FIG. 8, if necessary, the handrail unit 130 may further include a cover unit 133.

The cover unit 133 is fastened to the receiving space 131a from which the pivoting arm 132 is separated, and thus the aesthetics and feeling of use of the handrail unit 130 may be improved.

Specifically, the cover unit 133 includes an upper cover 133a mounted to surround the upper surface of the rail bracket 131, and extends downward from the left and right ends of the upper cover 133a to the side of the rail bracket 131 It may be provided with a pair of side covers (133b) mounted to surround the portion.

In addition, in the above, each side cover (133b) is formed extending from the lower end toward the receiving space (131a) in the transverse direction, the lower end fastening piece (133c) and the lower end of the fastening piece (133c) extending to the upper by a predetermined degree It may be provided with a separation prevention piece (133d). Here, the lower fastening piece 133c may be mounted and disposed to surround the lower end of the rail bracket 131, and the separation preventing piece 133d extends toward the receiving space 131a by a predetermined degree, and the rail bracket 131 It may be mounted to surround the inner surface of the. The cover unit 133 may be mounted and assembled to the rail bracket 131 by the lower fastening piece 133c and the separation preventing piece 133d.

The cover unit 133 may be extended to a length corresponding to the length of the rotating arm 132. Accordingly, a plurality of cover units 133 may be mounted and assembled to one rail bracket 131. That is, each of the cover units 133 is mounted and assembled in the receiving space 131a from which the respective pivoting arms 132 are separated.

The cover unit 133 may be formed of an elastic material. For example, the cover unit 133 may be formed of a material such as plastic or rubber. In addition, although not shown, a predetermined pattern, shape, color, texture, etc. may be provided on the outer surface of the cover unit 133 to improve the aesthetics or touch.

9 is a schematic view showing a lower portion of the pivot arm shown in FIG. 7.

Referring to FIG. 9, if necessary, the handrail unit 130 may include a fixing pin 134 fastened to the lower end of the rotating arm 132 and a pin cover 135 fastened to the fixing pin 134. have.

The fixing pin 134 may be inserted into the arm fixing hole 132b formed at the lower end of the rotating arm 132 and the rail fixing hole 112 on the side of the support beam 110 in a force-fitting manner. First and second fitting protrusions 134a and 134b may be formed at both ends of the fixing pin 134. The first and second fitting protrusions 134a and 134b are formed in a substantially spherical or partial spherical protrusion shape, so that the fixing pin 134 does not deviate between the support beam 110 and the rotating arm 132. Preferably, the fixing pin 134 may be formed of an elastic material such as plastic.

The pin cover 135 may be fitted to one end of the fixing pin 134. That is, the pin cover 135 may have a pin fitting groove 135c on one surface and may be fitted to the first fitting protrusion 134a. The pin cover 135 may prevent the first fitting protrusion 134a from being exposed to the outside, and may improve the appearance of the coupling portion.

More preferably, the pin cover 135 may be provided in a form in which a release paper 135a is adhered to one side toward the pivoting arm 132, and the release paper 135a is removed, and an adhesive surface containing an adhesive (135b) may be installed in a form bonded to the side of the pivoting arm (132). This is to prevent separation of the pin cover 135 by assisting the bonding surface 135b with the bonding force by the first fitting protrusion 134a and the pin fitting groove 135c.

In addition, the pin cover 135 may be formed of an elastic material such as plastic or rubber, and may be provided with a predetermined pattern, shape, color, texture, etc. to improve its appearance.

10 is a flow chart showing a construction method of the handrail unit shown in FIG. 7.

Referring to FIG. 10, first, a plurality of handrail units 130 are transferred to an installation position. Here, each handrail unit 130 may be loaded or transported in a form in which the rotating arm 132 is disposed in the receiving space 131a.

Next, the handrail unit 130 is disposed in an installation position. The handrail unit 130 may be installed or assembled in parallel with the stair unit 120 described above, but preferably, the handrail unit 130 may be installed after the stair unit 120 is first assembled. have.

The handrail unit 130 disposed in the installation position has a plurality of pivoting arms 132 deployed therein. The development of the pivot arm 132 may be naturally performed by the weight of each pivot arm 132. That is, when the handrail unit 130 is transported or transported, the opening of the receiving space 131a is arranged toward the upper side, so that each pivoting arm 132 can be transported and transported in a state accommodated in the receiving space 131a. In addition, during installation, the rotation arm 132 may be deployed downward by arranging the opening of the receiving space 131a toward the lower side.

When the pivoting arm 132 is deployed, the end of the rail bracket 131 is fixedly installed to a predetermined support structure. For example, the end of the rail bracket 131 may be fixedly installed on a wall surface of a corresponding layer or a support that can replace it.

In addition, the lower end of each pivoting arm 132 may be fastened to the support beam 110 through a fixing pin 134. Here, the rail fixing hole 112 to which the lower end of the pivoting arm 132 is fastened may be appropriately selected in consideration of the height of the rail bracket 131 and the arrangement of the previously installed stair unit 120. That is, the pivoting arm 132 is not necessarily disposed in a vertical direction to be mounted and assembled, but may be mounted and assembled in a predetermined inclined arrangement according to the arrangement height of the rail bracket 131. In some cases, for aesthetic purposes, such an inclined arrangement of the pivoting arm 132 may be considered.

On the other hand, when each pivoting arm 132 is fastened to the support beam 110, the pin cover 135 may be fastened again, if necessary. The pin cover 135 is assembled in such a way that the release paper 135a is removed, and the fixing pin 134 is fitted into the first fitting protrusion 134a of one end, and the first fitting protrusion 134a and the adhesive surface 135b It can be mounted and supported by

Also, depending on the installation environment, a plurality of handrail units 130 may be connected and installed. That is, the other handrail unit 130 is connected in the longitudinal direction to the end of the previously installed handrail unit 130, and a plurality of pivoting arms 132, etc., are assembled to the support beam 110 in a similar manner as before. do.

When the plurality of handrail units 130 are mounted on the support beam 110 as described above, the cover unit 133 may be assembled to the rail bracket 131 of each handrail unit 130. The cover unit 133 is fastened so as to surround the outer surface of the rail bracket 131, and the separation prevention piece 133d at the bottom is inserted into the receiving space 131a inside the rail bracket 131 by a predetermined degree, and the rail bracket 131 ) Can be assembled and fixed. In some cases, a predetermined coupling means 133e, such as a bolt, may be added between the rail bracket 131 and the cover unit 133 for a more robust assembly (see FIG. 8).

As described above, in the steel staircase structure and its construction method according to the embodiments of the present invention, each component of the steel staircase structure 100 such as the staircase unit 120 and the handrail unit 130 is modularized and stored. It can be easily transported, and can reduce the cost and time required for construction by enabling mass production or construction of a formal process.

In the above, embodiments of the present invention have been described, but those of ordinary skill in the relevant technical field add, change, delete or add components within the scope not departing from the spirit of the present invention described in the claims. Various modifications and changes can be made to the present invention by means of the like, and it will be said that this is also included within the scope of the present invention.

100: structure 110: support beam
111: mounting groove 112: rail fixing hole
120: stair unit 121: top plate
121a: slip prevention pad 121b: pad groove
122: side plate part 123: first connection plate
123a: guide rib 123b: guide groove
123c: installation hole 123d: fixing means
124: second connection plate 130: handrail unit
131: rail bracket 131a: accommodation space
132: rotating arm 132a: rotating shaft
132b: arm fixing hole 133: cover unit
133a: upper cover 133b: side cover
133c: lower part fastening piece 133d: separation prevention piece
133e: coupling means 134: fixing pin
134a: first fitting protrusion 134b: second fitting protrusion
135: pin cover 135a: release paper
135b: adhesive surface 135c: pin insertion groove

Claims (5)

A support beam 110 disposed inclined between each layer; And
Includes; a plurality of stair units 120 assembled and arranged along the length direction of the support beam 110,
The support beam 110 is provided with a plurality of seating grooves 111 on the upper surface,
The plurality of seating grooves 111 are spaced apart at predetermined intervals along the length direction of the support beam 110,
The stair unit 120,
An upper plate portion 121;
A side plate part 122 whose upper end is rotatably fastened to a front end of the upper plate part 121 about a first hinge axis H1 in a left-right direction;
A first connection plate 123 that is rotatably fastened to a lower end of the side plate part 122 about a second hinge axis H2 in a left-right direction; And
Including; a second connection plate 124 that is rotatably fastened about a third hinge axis H3 in a left-right direction to the rear end of the upper plate portion 121,
The first and second connection plates 123 and 124,
A guide rib (123a) protruding from one surface to be fastened to the mounting groove (111); And
It has a guide groove (123b) recessed in a shape corresponding to the guide rib (123a) on the opposite surface of the one surface; and,
The stair unit 120,
A first arrangement state in which the top plate 121, the side plate 122, the first connection plate 123 and the second connection plate 124 are arranged side by side to form a planar shape; And
The side plate part 122 is rotated about the first hinge axis H1 with respect to the top plate part 121 by a predetermined angle, and the first connection plate 123 is rotated with respect to the side plate part 122. A second arrangement state in which the second connection plate 124 is rotated about the hinge axis H2 by a predetermined angle, and the second connection plate 124 is rotated about the third hinge axis H3 with respect to the upper plate portion 121 at a predetermined angle; Is formed to be possible,
The plurality of stair units 120 are formed to be stackable vertically in the first arrangement state,
The guide rib 123a is formed to be fastened to the guide groove 123b of the other stair unit 120 disposed on the upper side in the first arrangement state,
The upper plate portion 121,
A slip prevention pad (121a) protruding with a predetermined cross-sectional shape and extending in a left and right direction on the upper surface of the upper plate portion 121; And
It has a pad groove (121b) formed in a shape corresponding to the slip prevention pad (121a), extending in the left and right direction on the lower surface of the top plate (121); and,
The slip prevention pad (121a) is, a plurality of the upper surface of the upper plate portion 121 is spaced apart back and forth,
The pad groove (121b), so as to correspond to the plurality of anti-slip pads (121a), a plurality of the upper plate portion 121 is spaced back and forth spaced apart,
The slip prevention pad 121a is formed of an elastic material, a steel staircase structure. delete delete The method according to claim 1,
The seating groove 111,
The front and rear width (W1) of the upper end is formed to a predetermined degree larger than the front and rear width (W2) of the lower end
The guide rib (123a) and the guide groove (123b),
In order to correspond to the shape of the seating groove 111, the front and rear width W3 of one end is formed to be greater than the front and rear width W4 of the other end by a predetermined degree,
The first and second connection plates 123 and 124,
It is disposed to correspond to the positions of the guide ribs 123a and the guide grooves 123b, and has an installation hole 123c passing through the first and second connection plates 123 and 124, respectively, and each of the installation holes A steel staircase structure that is assembled and fixed to the support beam 110 by a fixing means (123d) fastened to (123c). It relates to a construction method of constructing the steel staircase structure of any one of claims 1 or 4,
Step of transferring a plurality of stair units 120 to a construction location;
The step of installing the support beam 110 inclined between each layer for construction;
Arranging the plurality of stair units 120 on the support beam 110; And
Including, the step of fixing each of the stair units 120 to the support beam (110),
The transfer step,
Each of the stair units 120 is arranged in a flat shape, and the plurality of stair units 120 are transferred in a vertically stacked state,
The placing step,
Guide ribs (123a) of the first and second connection plates (123, 124) provided in each of the stair units (120) are seated in the mounting grooves (111) formed in the support beam (110), and each stair unit (120) comprising the step of being seated and supported on the upper surface of the support beam (110),
The fixing step,
Including the step of fastening the fixing means (123d) to the first and second connection plates (123, 124), respectively, to fix the first and second connection plates (123, 124) to the support beam (110), Construction method of steel staircase structure.

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