JP2008297881A - Built-up stair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new built-up stair of a simple constitution which facilitates assembly and disassembly thereof, can swiftly and positively secure satisfactory strength, exhibit superior carrying properties and storage properties and apply to a multi-storied building. <P>SOLUTION: The built-up stair 2 comprises a pair of side frame/handrail units 4, 6, a plurality of step plate units 8 detachably connected between the side frame/handrail units 4, 6 and a post unit. The pair of side frame/handrail units 4, 6 are equipped with a side frame 16 having an inclined part 12 and an upper horizontal part 14 extending horizontally from the top end of the inclined part 12, and with a handrail 18 integrally fixed at least to the upper surface of the inclined part 12 in the side frame 16. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to an assembly-type staircase applicable to a building.

For example, Patent Document 1 discloses a staircase in which a large number of stair stepboards each including a tread frame and a tread panel are installed between a pair of stair beams facing each other. In this staircase, the tread frame is framed by the front and rear frames of the high-rigidity frame member and the left and right side plates of the thick plate member that are installed on the front and rear frame and fixed with screws from the outside, and at least the opposing surfaces of the front and rear girders are opposed to each other Supporting projecting pieces projecting at the same height at the top and bottom are provided so as to form a planar rectangle. The tread frame is fixed between the pair of step girders by fixing the screws from the opposing surfaces of the left and right side plates of the tread frame, and the tread panel is fitted and installed on the supporting protrusion on the tread frame. It is.
JP 2001-279897 A

According to the above steps, assembly is easy, reliable, and sufficient strength is ensured. However, in the above staircase, the structure of the stair tread is complicated, and the handrail is provided on a column fixed to the outside of the stair girder. Because there is room, the landing and its support are installed on the building side, so there are problems such as lack of versatility as an assembly-type staircase (the applicability to multi-story buildings is not considered). is doing. Therefore, further improvements are required.

The object of the present invention is simple, easy to assemble and disassemble, fast, reliable and sufficient strength, excellent in transportability and storage, and applicable to multi-storey buildings. Is to provide a simple assembling staircase.

According to one aspect of the present invention,
A side frame having an inclined part extending in an up-down direction and having a lower end supported on the ground and an upper horizontal part extending horizontally from the upper end of the inclined part, and at least the inclination in the side frame A pair of side frames and handrail units that are integrally fixed to the upper surface of the section and that are opposed to each other at an interval in the horizontal direction; an inclined portion and a horizontal portion in each side frame of the side frame and handrail unit A plurality of stepping plate units that are detachably connected between the sections; and stand upright on the ground and are detachably connected to the top ends of the upper horizontal sections of the side frames and handrail units so that the upper horizontal section is substantially above the ground. The upper surface of each of the footboard units that are detachably connected between the horizontal portions of each of the side frame and the handrail unit is on a substantially common horizontal plane.
A prefabricated staircase is provided.
The strut unit includes a pair of struts facing each other at an interval and standing in parallel, a plurality of beam members extending between the struts at right angles to each of the struts and integrally connected to each other, and corresponding struts. A pair of brace members, one end of which is rotatably supported so as to be parallel to each other, each of the brace members having a folding position extending along a corresponding column, and the other end at one end. Each brace member is positioned at the connecting position, and the other end is separated from the lower surface of the upper horizontal portion of the corresponding side frame / handrail unit. It is preferable that they are connected freely.
The column unit includes an upper end beam member that integrally connects the upper ends of each column, and the handrail includes the upper surface of the inclined portion and the upper horizontal portion of one of the side frame / handrail unit, and the side frame / handrail unit. Are fixed integrally to the upper surface of the inclined portion and the upper surface of the upper end beam member of the column unit, respectively, or are integrated to the upper surface of the inclined portion and the upper surface of the upper horizontal portion of each of the side frame / handrail unit. It is preferably fixed.
The tread board unit is a rectangular board extending horizontally in the longitudinal direction where each of the side frames and handrail units are opposed to each other with a fixed width, and a pair of side boards extending perpendicularly from one side of the board to both sides of the board in the width direction. And a pair of end plates fixedly attached to the substrate and the side plate so as to extend between the side plates at both ends in the longitudinal direction of the channel plate. It is preferable that each of the end plates is detachably fastened by a plurality of bolts and nuts inside the corresponding side frame / handrail unit with the open side of the unit facing downward.
The tread board unit is a rectangular board extending horizontally in the longitudinal direction where each of the side frames and handrail units are opposed to each other with a fixed width, and a pair of side boards extending perpendicularly from one side of the board to both sides of the board in the width direction. A box-shaped sheet metal unit having a base plate and a pair of end plates integrally fixed to the side plates so as to extend between side plates at both longitudinal ends of the channel plate; A plurality of female screw members fixed to the inside and having one end opened and the other end closed, and a plurality of female screws having one end opened outward in the longitudinal direction through a through hole formed in a corresponding end wall Member and concrete or mortar filled in the inner space of the box-shaped sheet metal unit so that the exposed surface is flat, and each end plate faces the corresponding side with the exposed surface of the concrete or mortar facing up Frame / handrail unit Is fastened detachably by a plurality of bolts on the inside, it is preferable.
The side frames of the pair of side frames / handrail units are made of elongated steel plates having a channel cross-section, and the open sides are directed in opposite horizontal directions. Each of the footboard units has a corresponding side frame / handrail unit. It is preferable that it is fastened with a bolt from the outside in the horizontal direction of the side frame.
At least one footboard unit connected between the inclined portions of the side frame / handrail unit has a reinforcing member integrally fixed so as to extend perpendicularly downward from the lower surface at at least both longitudinal ends of the footboard unit. It is preferable that both end surfaces in the longitudinal direction of the reinforcing member are detachably connected to the inclined portions of the side frame and the handrail unit, respectively.
It is preferable that the lower end of each inclined portion of the side frame / handrail unit and / or the lower end of each column of the column unit is supported on the ground via jack means.
According to another aspect of the invention,
A first main support column and a second main support column are provided upright on the ground at intervals in the horizontal vertical direction, and the first main support column and the second main support column are orthogonal to the horizontal vertical direction. A plurality of beams extending horizontally on both sides in the horizontal direction are arranged in the vertical direction at intervals from each other, and the beams arranged on the second main column are respectively arranged on the first main column. Positioned at the center height of each of the beams
A first one-side staircase unit is detachably disposed between the ground on the second main column side and the upper surface on one side of the first beam from the bottom of the first main column. Between the one-side upper surface of the n-th beam from the bottom and the one-side upper surface of the n + 1-th beam from the bottom of the first main column, an (n + 1) -side one-side staircase unit is detachably disposed.
The first other-side staircase unit is detachable between the other upper surface of the first beam from the bottom of the first main column and the other upper surface of the first beam from the bottom of the second main column. An n + 1 other-side staircase unit is disposed between the other upper surface of the n + 1-th beam from the bottom of the first main column and the other upper surface of the n + 1-th beam from the bottom of the second main column. Is detachably arranged,
The first one-side staircase unit is an inclined portion that extends in an up-down direction and has a lower end supported on the ground and an upper horizontal portion that extends horizontally from the upper end of the inclined portion. A pair of side frames and handrail units, each having a frame and a handrail integrally fixed to at least the upper surface of the inclined portion of the side frame, and facing each other at an interval in the horizontal direction; A plurality of footboard units that are detachably connected between the inclined portions of the side frame;
The (n + 1) th one-side staircase unit and the nth other-side staircase unit are inclined in an up and down direction, a lower horizontal portion extending horizontally from the lower end of the inclined portion, and horizontally from an upper end of the inclined portion. A pair of side frames and handrails, each having a side frame having an upper horizontal portion extending; and a handrail integrally fixed to the upper surface of at least the inclined portion of the side frame and facing each other at an interval in the horizontal direction A plurality of footboard units that are detachably connected between the inclined portions of each side frame of the side frame / handrail unit;
The upper horizontal portion of the side frame / handrail unit located on the tip side of one side of the n-th beam from the bottom in the first main column of the n-th one-side staircase unit, and the first of the n-th other-side staircase unit A plurality of footboard units are detachably connected to form a horizontal upper surface between the bottom horizontal portion of the side frame / handrail unit located on the other end of the n-th beam from the bottom of the main column. ,
The lower horizontal portion of the side frame / handrail unit located on the tip side of one side of the nth beam from the bottom of the second main column of the (n + 1) one-sided staircase unit, and the second of the nth other-side staircase unit A plurality of footboard units are detachably connected to the upper horizontal portion of the side frame / handrail unit located on the other end of the n-th beam from the bottom of the main strut so as to form a horizontal upper surface. ing,
A prefabricated staircase is provided.
At least the side frame / handrail unit and the footboard unit of each one-side staircase unit excluding the first one-side staircase unit have substantially the same configuration, and each of the other side staircase units has at least the side frame / handrail. The unit and the footboard unit preferably have substantially the same configuration.
The upper surface of the upper horizontal portion of the side frame / handrail unit located on the one base end side of the n-th beam from the bottom of the first main column of the n-th one-side stair unit and the n-th other-side stair unit, The upper surface of the lower horizontal portion of the side frame / handrail unit located on the other base end side of the n-th beam from the bottom in the first main column is below the first main column of the n-th one-side step unit. To the other side of the n-th beam from the bottom of the first main strut of the upper horizontal portion of the side frame / handrail unit and the n-th other side stair unit located on the tip side of one side of the n-th beam from the bottom. Each of the footboard units that are formed lower than the upper surface of the lower horizontal portion of the side frame / handrail unit located on the front end side and that form the horizontal upper surface is n from the bottom of the first main column of the n-th one-side staircase unit. Of the upper horizontal part of the side frame / handrail unit located at the base end of one side of the second beam The surface and the upper side of the lower horizontal portion of the side frame / handrail unit located on the other base end side of the nth beam from the bottom of the first main strut of the nth other side staircase unit And the upper surface of the lower horizontal portion of the side frame / handrail unit located on the one base end side of the nth beam from the bottom of the second main column of the (n + 1) th one-side staircase unit, and the other side of the nth The upper surface of the upper horizontal portion of the side frame / handrail unit located on the other base end side of the n-th beam from the bottom in the second main column of the staircase unit is the second top of the n + 1 one-side staircase unit. The upper surface of the lower horizontal portion of the side frame / handrail unit located on one end of the n-th beam from the bottom in the main column and the n-th other step unit of the n-th beam from the bottom in the second main column. It is formed lower than the upper surface of the upper horizontal part of the side frame / handrail unit located on the other end of the beam. Each of the footboard units forming the horizontal upper surface is a lower horizontal portion of the side frame / handrail unit of the (n + 1) one-side staircase unit, which is located on the base end side on one side of the n-th beam from the bottom in the second main column. The upper surface and the upper horizontal portion of the side frame / handrail unit located on the other base end side of the n-th beam from the bottom of the second main strut of the n-th other side staircase unit are crossed and extended. Preferably present.
The upper surface of the upper horizontal portion of the side frame / handrail unit located on the tip side of one side of the n-th beam from the bottom in the first main column of the n-th one-side staircase unit, and the n-th other-side staircase unit, From the bottom of the second main column, the upper surface of the lower horizontal portion of the side frame / handrail unit located on the other end of the first beam from the bottom of the first main column, and the (n + 1) th one-side staircase unit. The upper surface of the lower horizontal portion of the side frame / handrail unit located on the tip side of one side of the nth beam and the nth other beam from the bottom of the second main column of the nth other staircase unit It is preferable that a handrail is selectively fixed integrally to the upper horizontal portion of the side frame / handrail unit located on the front end side.
The first auxiliary strut unit standing upright on the ground with a space in the horizontal and vertical direction opposite to the second main strut, and the first main strut unit can be sequentially detached on the first auxiliary strut unit. Of the first one-side staircase unit on the one end side of the first beam from the bottom of the first main strut. The top horizontal end of the frame / handrail unit and the bottom horizontal part of the side frame / handrail unit located on the other end of the first beam from the bottom of the first main column of the first other side stair unit. Is connected to and supported by the lower end of the (n + 1) th auxiliary column unit or the upper end of the (n + 1) th auxiliary column unit, and is n + 1th from the bottom of the first main column of the (n + 1) one-side staircase unit. Side frame located on the tip side of one side of the beam The tip of the upper horizontal portion of the handrail unit and the tip of the lower horizontal portion of the side frame / handrail unit located on the other tip end side of the n + 1th beam from the bottom of the first main column of the (n + 1) th other side staircase unit Are preferably detachably connected to and supported by the lower end of the corresponding (n + 2) th auxiliary column unit or the upper end of the (n + 1) th auxiliary column unit.
Each of the (n + 1) th auxiliary strut units is preferably composed of common parts.
With respect to the second main column, on the first other auxiliary column unit upright on the ground and spaced in the horizontal and vertical direction opposite to the first main column, and on the first other auxiliary column unit There is provided an (n + 1) th auxiliary column unit that is connected and supported in a releasable manner and extends vertically upward, and is provided on one side of the first beam from the bottom of the second main column of the second one-side stair unit. Side frame located on the distal end side, side frame located on the distal end side of the first horizontal beam from the bottom of the second main strut of the lower horizontal end of the handrail unit and the first other stair unit The tip of the upper horizontal portion of the handrail unit is detachably connected to and supported by the lower end of the (n + 1) th other auxiliary column unit or the upper end of the (n) th other auxiliary column unit. On one side of the n + 1st beam from the bottom in the second main column Side frame located on the end side, side frame located on the tip of the lower horizontal part of the handrail unit and the tip of the n + 1 other side stair unit on the other side of the n + 1-th beam from the bottom of the second main column It is preferable that the tip of the upper horizontal portion of the handrail unit is detachably connected to and supported by the lower end portion of the (n + 2) th other auxiliary column unit or the upper end portion of the (n + 1) th other auxiliary column unit.
Each of the (n + 1) th other auxiliary strut units is preferably composed of common parts.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of an assembly-type staircase constructed according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIGS. 1 to 3, the assembly-type staircase 2 includes a pair of side frame / handrail units 4 and 6, a plurality of footboard units 8, and a column unit 10 that are opposed to each other at an interval in the horizontal direction. Consists of

The side frame / handrail unit 4 is an inclined portion 12 that is inclined and extends linearly in the vertical direction, and an inclined portion 12 whose lower end is supported on the ground, and extends horizontally from the upper end of the inclined portion 12. A side frame 16 having an upper horizontal portion 14; and at least an upper surface of the inclined portion 12 in the side frame 16, in the embodiment, a handrail 18 fixed integrally to the upper surface of the inclined portion 12. The side frame / handrail unit 6 is an inclined portion 12 that is inclined and extends linearly in the vertical direction, and an inclined portion 12 whose lower end is supported on the ground, and extends horizontally from the upper end of the inclined portion 12. A side frame 16 having an upper horizontal portion 14; a handrail fixed integrally and continuously on at least the upper surface of the inclined portion 12 in the side frame 16, in the embodiment, on the upper surface of the inclined portion 12 and the upper surface of the upper horizontal portion 14. 18 and; As shown in FIG. 5, each of the side frames 16 includes a main plate 16A that is elongated with a constant width, and a flange 16B that extends from the both sides in the width direction of the main plate 16A by the same length perpendicularly to one side. The cross section is made of an elongated steel plate having a channel shape in the cross section, and the open sides are oriented in opposite directions. A plurality of attachment holes 16C for attaching the tread board unit 8 are formed in the main plate 16A in each of the side frames 16 (in the embodiment, a pair of attachment holes 16C formed at intervals in the horizontal direction are formed. Multiple pairs are formed).

The handrail 18 in the side frame / handrail unit 4 includes a handrail portion 18A extending parallel to the upper surface of the upper flange 16B of the inclined portion 12 and the upper horizontal portion 14 of the side frame 16, and a handrail portion 18A. And a plurality of support columns 18B extending vertically from the upper surface toward the upper surface. The handrail portion 18A and the column portion 18B are made of a steel round pipe. The lower end of each column portion 18B is fixed to the upper surface of the upper flange 16B of the side frame 16 by welding. The handrail 18 in the side frame / handrail unit 6 includes a handrail portion 18A extending in parallel with the upper surface of the upper flange 16B of the inclined portion 12 of the side frame 16, and the handrail portion 18A from the handrail portion 18A toward the upper surface. And a plurality of column portions 18B extending vertically. The handrail portion 18A and the column portion 18B are made of a steel round pipe. The lower end of each column portion 18B is fixed to the upper surface of the upper flange 16B of the side frame 16 by welding. Since the above-described configurations of the side frame / handrail units 4 and 6 can be stacked on each other, they are easy to transport and advantageous in storage.

Referring to FIG. 1 and FIGS. 6 to 8, the footboard unit 8 having substantially the same configuration is a longitudinal direction in which the side frames and handrail units 4 and 6 are opposed to each other with a certain width (the left-right direction in FIG. 7). 8B, a channel plate 8C having a rectangular substrate 8A extending horizontally, a pair of side plates 8B extending perpendicularly from one side of the substrate 8A to both sides of the substrate 8A in the width direction, and the longitudinal direction of the channel plate 8C. It consists of a box-shaped sheet metal unit 8U having a substrate 8A and a pair of end plates 8D fixed integrally to the side plates 8B by welding so as to extend between the side plates 8B at both ends. A plurality of, in the embodiment, two mounting holes 8E are formed in each of the rectangular end plates 8D. Each of the tread plate units 8 is such that each of the end plates 8D faces the open side of the box-shaped sheet metal unit 8U downward, and the main plates in the inclined portions 12 and the horizontal portions 14 of the side frames 16 of the side frames / handrail units 4 and 6, respectively. A plurality of bolts 20 and nuts 22 (FIG. 5) are detachable from the outer side in the horizontal direction of the main plate 16A through the mounting holes 8E and 16C which are superposed on each other inside 16A and aligned with each other. It is concluded. The upper surfaces of the tread plate units 8 that are detachably fastened between the horizontal portions 14 of the side frames 16 in the side frame / handrail units 4 and 4 exist on a substantially common horizontal plane. Each of the tread board units 8 has a remarkably simple structure and contributes to ease of assembly, quickness, cost reduction, excellent transportability and storage.

1 to 4, the steel column unit 10 stands upright on the ground and is detachably connected to the tip of the upper horizontal portion 14 in each of the side frame / handrail units 4 and 6. The part 14 is supported substantially horizontally above the ground. More specifically, the strut unit 10 includes a pair of struts 24 facing each other and spaced in parallel, and a plurality of struts 24 that extend between the struts 24 at right angles to each of the struts 24 and are integrally connected. In this embodiment, two beam members 26 and 28, and a pair of brace members 28 whose one ends are rotatably supported so as to be parallel to the corresponding support columns 24, respectively. Each of the columns 24 is formed from a steel square pipe.

Each of the brace members 28 includes a folding position (not shown) extending along the corresponding support column 24 and a connecting position (two points in FIGS. 1 to 3) where the other end is inclined obliquely upward with respect to the one end. And a position indicated by a chain line). A rectangular flat plate mounting plate 30 is integrally fixed to the other end of each brace member 28. The column unit 10 includes an upper beam member 26 that integrally connects the upper ends of the columns 24, and a handrail 18 having substantially the same configuration as described above is formed on the upper surface of the upper beam member 26. It is fixed integrally. The beam member 28 is disposed between the lower ends of the columns 24. The strut unit 10 has a remarkably simple structure and contributes to ease of assembly, cost reduction, excellent transportability and storage.

Each of the brace members 28 is positioned at the connecting position, and the mounting plate 30 at the other end is on the lower surface of the upper horizontal portion 14 (the upper surface of the upper flange 16B (FIG. 5)) in the side frames / handrail units 4 and 6, respectively. Polymerized and fastened with a bolt and nut (not shown). A plurality of (three in the embodiment) mounting holes (through holes) 32 having axes in the horizontal direction perpendicular to the mutually opposing directions are formed at the upper end of each of the columns 24. A mounting plate 35 having mounting holes 34 corresponding to the mounting holes 32 is fixed to the front ends of the upper horizontal portions 14 of the side frame / handrail units 4 and 6 by welding. Each mounting hole 32 of the support column 24 and the corresponding mounting hole 34 of the mounting plate 35 of the upper horizontal portion 14 are aligned with each other, and are detachably fastened by bolts and nuts (not shown).

As described above, the assembly-type staircase 2 is composed of a pair of side frame / handrail units 4 and 6, a plurality of footboard units 8, and a column unit 10, and is assembled by releasably fastening with bolts and nuts. Therefore, the structure is simple, the assembling and disassembling is easy, the quick and reliable and sufficient strength is ensured, and the transportability and the storage property are excellent. In the above embodiment, the handrail 18 includes the upper surface of the inclined portion 12 and the upper surface of the upper horizontal portion 14 in the side frame 16 of the side frame / handrail unit 4, and the upper surface of the inclined portion 12 in the side frame 16 of the side frame / handrail unit 6. And the upper end beam member 26 of the column unit 10 are integrally fixed to each other, and the entrance to the building (not shown) is on the upper horizontal portion 14 side of the side frame 16 of the side frame / handrail unit 6. On the other hand, the handrail 18 includes the upper surface of the inclined portion 12 in the side frame 16 of the side frame / handrail unit 4, the upper surface of the inclined portion 12 in the side frame 16 of the side frame / handrail unit 6, and the upper surface of the upper horizontal portion 14. Other embodiments fixed integrally to the upper surface of the upper end beam member 26 of the unit 10, or alternatively, integrated to the upper surface of the inclined portion 12 and the upper surface of the upper horizontal portion 14 in each of the side frame / handrail units 4 and 6. There are other embodiments that are fixed to the upper surface of the upper end beam member 26 of the column unit 10 and are not provided on the upper surface. The part where the handrail 18 is not provided is generally an entrance to the building.

Next, another embodiment of the footboard unit 8 will be described. The footboard unit 8 shown in FIG. 5 is formed by forming one side plate 8B of the channel plate 8C in the box-shaped sheet metal unit 8U longer than the other side plate 8B, and the rear side of the footboard unit 8 attached to the lower side. Is hanging down. A plurality of anti-slip protrusions 8F are formed on the substrate 8A of the channel plate 8C. The hanging portion of one side plate 8B functions as a so-called kick.

The tread plate unit 8 shown in FIG. 9 is fixed to the inside of each of the box-shaped sheet metal unit 8U and the end plate 8D, one end is opened, and the other end (the inner end of the box-shaped sheet metal unit 8U) is closed. A plurality of female screw members 36, one end of which is opened outward in the longitudinal direction through a through hole 8E (FIG. 6) formed in the corresponding end wall 8D (two in the embodiment). A female screw member 36 and concrete or mortar 38 filled in the inner space of the box-shaped sheet metal unit 8U so that the exposed surface is flat are provided, and the exposed surface of the concrete or mortar 38 faces upward. Each is fastened detachably by a plurality of bolts 20 inside the corresponding side frame / handrail unit 4 or 6 side frame 16. Of course, the concrete or mortar 38 is filled with the inner space of the box-shaped sheet metal unit 8U facing upward. Reinforcing bars are arranged as necessary. In the illustrated embodiment, an anti-slip and kick-in member 40 is disposed on the nose of the footboard unit 8. The anti-slip / kicking member 40 has a fixed width and extends from one end to the other end in the longitudinal direction of the box-shaped sheet metal unit 8U. And a kick-in part 40B that hangs down from one side in the width direction of the anti-slip part 40A to the back side, and has a substantially angle shape as a whole. A pair of retaining protrusions 40C are formed on the anti-slip portion 40A so as to extend from the back surface. Each of the retaining protrusions 40 </ b> C that can be formed from a metal such as aluminum or an appropriate synthetic resin is formed over substantially the entire longitudinal direction of the anti-slip portion 40 </ b> A and is embedded in concrete or mortar 38.

A tread board unit 8 shown in FIG. 11 is obtained by bonding a plurality of tiles or stones 42 in place of the anti-slip / kicking member 40 of the tread board unit 8 shown in FIG. Are substantially the same as the footboard unit 8 shown in FIG. The tiles or stones 42 arranged on the nose of the tread board unit 8 have anti-slip irregularities formed on the surface having an almost angle shape like the anti-slip / kicking member 40. Other tiles or stones 42 covering other exposed surfaces of concrete or mortar 38 have a rectangular flat plate shape. Each of the tread board units 8 described with reference to FIGS. 9 to 11 also has a simple configuration, contributes to ease of assembly, cost reduction, excellent transportability and storage, and prevents generation of noise. To improve.

The footboard unit 8 shown in FIG. 12 has substantially the same configuration as the footboard unit 8 shown in FIG. 9 (concrete or mortar 38 is filled in the inner space of the box-shaped sheet metal unit 8U). A reinforcing member 44 that extends downward from the lower surface of the substrate 8A at a right angle and extends in the longitudinal direction of the footboard unit 8 is integrally fixed to the footboard unit 8. The reinforcing member 44 is composed of a main plate 46A that is elongated with a constant width, and a flange 46B that extends from the both sides of the main plate 46A in the width direction at right angles to one side in the same length, and has a channel-shaped elongated steel plate 46. And a rectangular end plate 48 fixed to both ends in the longitudinal direction of the steel plate 46 by welding. The end plate 48 has two mounting holes 48A. The reinforcing member 44 is fixed by welding in a state where the upper surface of the upper flange 46B is superposed on the lower surface of the substrate 8A of the step board unit 8.

1 and 12, at least one footboard unit 8 connected between the inclined portions 12 of the side frame / handrail units 4 and 6 includes the footboard unit 8 to which a reinforcing member 44 is fixed. It is preferable (for example, the footboard unit 8 disposed at the upper end and / or the lower end of each of the inclined portions 12, the footboard unit 8 disposed at the intermediate portion, etc.). Both ends in the longitudinal direction of the reinforcing member 44 are detachably fastened to the side frames 16 of the inclined portions 12 of the side frames / handrail units 4 and 6 by bolts and nuts (not shown). Such a configuration prevents the side frame / handrail units 4 and 6 from being distorted. There is another embodiment in which the reinforcing member 44 is formed of an angle-shaped steel plate fixed to the lower surface of both longitudinal ends of the substrate 8A.

Referring to FIG. 1, the lower ends of the side frames 16 and / or the lower ends of the columns 24 of the column units 10 in the inclined portions 12 of the side frames / handrail units 4 and 6 are placed on the ground via jack means. It is preferable to support. The jack means is formed at the lower end of the side frame 16 and / or the post 24 of the post unit 10 at the lower end of the side frame 16 and / or the jack member 54 composed of the base plate 50 and the male screw member 52 upright from the center of the base plate 50. And a female screw portion (not shown). A lower end portion of each of the side frames 16 is formed to extend vertically downward. A plate extending horizontally between the flanges 16B is fixed, and a female screw portion is formed on the plate. Further, a plate is fixed to each lower end portion of the column 24 of the column unit 10, and a female screw portion is formed on the plate. Such a configuration allows the assembled staircase 2 to be easily and accurately placed on the ground. Instead of the jack means, the lower end may be detachably fastened with a bolt on a foundation (not shown) disposed on the ground. In this case, each lower end portion of the side frame 16 is formed to extend vertically downward, a plate extending horizontally between the flanges 16B is fixed, and an attachment hole is formed in the plate. Further, a substrate having a plurality of mounting holes is fixed to the lower end of each of the columns 24 of the column unit 10.

The structure of the assembly-type staircase 2 is applicable to a multi-story building (that is, a multi-story assembly staircase). Referring to FIGS. 13 to 17, the assembly-type staircase 100 of the multi-story floor is a first main support column which stands upright on the ground G with a space between each other in the horizontal vertical direction (the left-right direction in FIGS. 15 and 17). 102 and a second main column 104. The first main strut 102 extends horizontally by the same length horizontally on both sides (horizontal direction in FIGS. 14 and 16 and the direction perpendicular to the paper surface in FIGS. 15 and 17) perpendicular to the horizontal vertical direction. Beam 102-1 (first beam from the bottom), 102-2 (second beam from the bottom), 102-3 (third beam from the bottom) ... 102-n (nth beam from the bottom) Are arranged in this order from the bottom to the top at equal intervals in the vertical direction. The second main column 104 has beams 104-1 (first beam from the bottom), 104-2 (from the bottom) extending horizontally by the same length on both sides in the horizontal direction orthogonal to the horizontal vertical direction. (Second beam), 104-3 (third beam from the bottom)... 104-n (n-th beam from the bottom) are spaced from each other at equal intervals in this order from bottom to top. A plurality of them are arranged. Note that n is a positive integer (the same applies to the following description).

The first main strut 102 and the second main strut 104 are formed of H steel, which is a common part (consisting of a web and a flange disposed so as to be orthogonal to both ends of the web). The substrate 102B is fixed to the lower end of the first main column 102 so as to be orthogonal to the first main column 102, and the substrate 102B can be detached from the foundation B1 disposed on the ground G with a plurality of bolts 106. It is concluded to. The substrate 104B is fixed to the lower end of the second main column 104 so as to be orthogonal to the second main column 104, and the substrate 104B can be detached from the foundation B2 disposed on the ground G with a plurality of bolts 106. It is concluded to. The first main strut 102 and the second main strut 104, which are vertically upright and parallel to each other, are positioned such that the outer surfaces of one of the flanges face each other in the horizontal and vertical direction.

The beams 102-1, 102-2, 102-3... 102-n and the beams 104-1, 104-2, 104-3... 104-n are made of H steel which is a common part. . Beams 102-1, 102-2, 102-3... 102 -n are respectively vertically connected to flanges on the opposite side of the first main column 102 in the horizontal and vertical direction with respect to the second main column 104. A lower flange is placed on the upper surface of the support plate 108 having an angled cross-sectional shape that is fixed at equal intervals in the direction, and is detachably fastened by a plurality of bolts and nuts. The beam 102-1 is also separated from the flange of the first main column 102 by a plurality of bolts and nuts by superimposing a mounting plate fixed between the flanges on one side of the beam 102-1 facing each other. Can be fastened. Similarly, the other beams 102-2, 102-3,... 102-n are detachably fastened to the flange of the first main column 102 by a plurality of bolts and nuts.

Beams 104-1, 104-2, 104-3,... 104-n are respectively arranged on the flanges on the opposite side of the second main column 102 in the horizontal and vertical direction with respect to the first main column 102. A lower flange is placed on the upper surface of the support plate 108 having an angle-shaped cross-sectional shape that is fixed at equal intervals in the direction, and is detachably fastened by a plurality of bolts and nuts. The beam 104-1 is also separated from the flange of the second main column 104 by a plurality of bolts and nuts by superimposing a mounting plate fixed between the flange end portions on one side of the beam 104-1 facing each other. Can be fastened. Similarly, the other beams 104-2, 104-3,... 104-n are detachably fastened to the flange of the second main column 104 by a plurality of bolts and nuts. Beams 104-1, 104-2, 104-3... 104-n arranged on the second main column 104 are beams 102-1, 102- arranged on the first main column 102, respectively. 2, 102-3... 102-n are positioned at the central height.

More specifically, the beam 102-1 is located at a predetermined height from the ground G. Beam 104-1 is positioned at the mid height between beams 102-1 and 102-2, and beam 104-2 is positioned at the mid height between beams 102-2 and 102-3. However, the beam 104-3 is located at the middle height between the beams 102-3 and 102-4 (not shown). In general, the beam 104-n is positioned at the middle height between the beams 102-n and 102- (n + 1). In the embodiment, the height from the upper surface of the beam 102-1 to the upper surface of the beam 104-1, the height from the upper surface of the beam 104-1 to the upper surface of the beam 102-2, and the upper surface of the beam 102-2 to the beam 104- 2 and the height from the upper surface of the beam 104-2 to the upper surface of the beam 102-3 are set substantially uniform. In general, the height from the upper surface of the beam 102-n to the upper surface of the beam 104-n and the height from the upper surface of the beam 104-n to the upper surface of the beam 102- (n + 1) are substantially uniform. Is set correctly.

Between the ground G on the second main column 104 side and the upper surface of one side 102-1a of the first beam 102-1 from the bottom of the first main column 102, the first one-side step unit 1Ua is detachable. Arranged. Further, the upper surface of one side 104-na of the nth beam 104-n from the bottom of the second main column 104 and the one side 102- (n + 1) a of the n + 1th beam 102- (n + 1) from the bottom of the first main column 102. Between the upper surface, an (n + 1) th one-side staircase unit (n + 1) Ua is detachably disposed. Specifically, the upper surface of one side 104-1a of the first beam 104-1 from the bottom of the second main column 104 and the upper surface of one side 102-2a of the second beam 102-2 from the bottom of the first main column 104. The second one-side staircase unit 2Ua is detachably disposed between the two. Between the upper surface of one side 104-2a of the second beam 104-2 from the bottom of the second main column 104 and the upper surface of one side 102-3a of the third beam 102-3 from the bottom of the first main column 102. The third one-side staircase unit 3Ua is detachably disposed. In this way, the one-side staircase units are sequentially arranged.

On the other hand, the upper surface of the other side 102-1b of the first beam 102-1 from the bottom of the first main column 102 and the upper surface of the other side 104-1b of the first beam 104-1 from the bottom of the second main column 104 In the meantime, the first other-side staircase unit 1Ub is detachably disposed. Further, the upper surface 102- (n + 1) b of the n + 1th beam 102- (n + 1) from the bottom of the first main column 102 and the other side of the n + 1th beam 104- (n + 1) from the bottom of the second main column 102. Between the upper surface of 104- (n + 1) b, the (n + 1) th other side staircase unit (n + 1) Ub is detachably disposed. More specifically, the upper surface of the other side 102-2b of the second beam 102-2 from the bottom of the first main column 102 and the other side 104 of the second beam 104-2 from the bottom of the second main column 104. The second other-side staircase unit 2Ub is detachably disposed between the upper surface of -2b. Between the upper surface of the other side 102-3b of the third beam 102-3 from the bottom of the first main column 102 and the upper surface of the other side 104-3b of the third beam 104-3 from the bottom of the second main column 104 The third other-side staircase unit 3Ub is detachably disposed. In this way, the other side staircase units are sequentially arranged.

Referring to FIGS. 13, 15, 17, 20, and 21, the first one-side staircase unit 1 </ b> Ua has a pair of side frame / handrail units 110 and 112 that face each other at an interval in the horizontal and horizontal directions. And a plurality of footboard units 8. The side frame / handrail unit 110 is positioned on the outer side (far side) in the horizontal lateral direction with respect to the first main column 102, and the side frame / handrail unit 112 is positioned on the inner side in the horizontal lateral direction with respect to the first main column 102. Located on the (closer side). Each of the side frame / handrail units 110 and 112 is an inclined portion 114 that extends while being inclined in the vertical direction, and an inclined portion 114 whose lower end is supported on the ground G, and extends horizontally from the upper end of the inclined portion 114. A side frame 116 having an upper horizontal portion 115 and a handrail 117 fixed integrally to at least the upper surface of the inclined portion 114 in the side frame 116. In the side frame / handrail unit 110, the handrail 117 is fixed integrally and continuously to the upper surfaces of the inclined portion 114 and the upper horizontal portion 115 in the side frame 116, and the side frame / handrail unit 112 is inclined in the side frame 116. It is integrally fixed to the upper surface of the portion 114. The footboard unit 8 is detachably connected between the inclined portions 114 of the side frames 116 of the side frames / handrail units 110 and 112.

The upper surface of the upper horizontal portion 115 of the side frame / handrail unit 112 is formed lower than the upper surface of the upper horizontal portion 115 of the side frame / handrail unit 110. The other basic configurations of the side frame / handrail units 110 and 112 are substantially the same as those of the side frame / handrail units 4 and 6 in the assembly-type staircase 2 shown in FIG. . The footboard unit 8 may be any one of the footboard units 8 (the footboard unit 8 described with reference to FIGS. 6 to 12) in the assembly-type staircase 2. In the first one-side staircase unit 1Ua, the bottom surface of the upper horizontal portion 115 (the region near the upper end of the inclined portion 116) of the side frames 116 of the side frames / handrail units 110 and 112 is It is mounted on the upper surface of one side 102-1a of the first beam 102-1 from the bottom, and is detachably fastened by a plurality of bolts and nuts (see FIGS. 14, 15, 18, and 19). The upper end portion of the inclined portion 116 in the side frame 116 of the side frame / handrail unit 112 is detachably fastened to the first main column 102 by a plurality of bolts and nuts (FIG. 14). A mounting plate in which a mounting hole is formed is fixed between the corresponding flanges of the first main column 102. The mounting plate is overlapped with the main plate of the inclined portion 116 in which the mounting hole is formed, and can be detached by a plurality of bolts and nuts. It is concluded. The other side frame / handrail units 122 and 132 are connected to the first main column 102 and the second main column 104 in the same manner.

Referring to FIG. 13, FIG. 15, FIG. 17, FIG. 22 and FIG. 23, the (n + 1) th one-side staircase unit, that is, the second one-side staircase unit 2Ua, the third one-side staircase unit 3Ua,. Since the staircase unit n + 1Ua can be composed of substantially common components, the second one-side staircase unit 2Ua will be described as a representative of them.

The second one-side staircase unit 2Ua includes a pair of side frame / handrail units 120 and 122 that face each other at an interval in the horizontal and horizontal directions, and a plurality of footboard units 8. The side frame / handrail unit 120 is positioned on the outer side (distant side) in the horizontal lateral direction with respect to the first main column 102 and the second main column 104, and the side frame / handrail unit 122 is disposed on the first main column 102. And it is located in the inner side (near side) in the horizontal transverse direction with respect to the second main support column 104. The side frame / handrail units 120 and 122 are each inclined to extend in an up-down direction, a lower horizontal part 125 extending horizontally from the lower end of the inclined part 124, and horizontally from the upper end of the inclined part 124. A side frame 127 having an upper horizontal portion 126 that extends and a handrail 128 that is integrally fixed to at least the upper surface of the inclined portion 124 in the side frame 127 are provided. In the side frame / handrail unit 120, the handrail 128 is fixed integrally and continuously to the upper surfaces of the lower horizontal portion 125, the inclined portion 124 and the upper horizontal portion 126 in the side frame 127, and in the side frame / handrail unit 122, The side frame 127 is integrally fixed to the upper surface of the inclined portion 124. Needless to say, the handrail 128 is not installed when it is not necessary for the lower horizontal portion 125 and the upper horizontal portion 126 (for example, when facing the entrance of a building). The footboard unit 8 is detachably connected between the inclined portions 124 of the side frames 127 of the side frame / handrail units 120 and 122.

The upper surface of the lower horizontal portion 125 of the side frame / handrail unit 122 is formed lower than the upper surface of the lower horizontal portion 125 of the side frame / handrail unit 120, and the upper surface of the upper horizontal portion 126 of the side frame / handrail unit 122 is It is formed lower than the upper surface of the upper horizontal portion 126 of the frame / handrail unit 120. The basic configuration other than the configuration including the lower horizontal portion 125 of the side frame / handrail units 120 and 122 and the configuration of the upper surface of the upper horizontal portion 126 having different heights are respectively the side frame / handrail in the assembly-type staircase 2 shown in FIG. Since it is substantially the same as units 4 and 6, description thereof will be omitted. Moreover, the footboard unit 8 may use any of the footboard units 8 (the footboard unit 8 described with reference to FIGS. 6 to 12) in the assembly-type staircase 2. In the second one-side staircase unit 2Ua, the bottom surface of the lower horizontal portion 125 (region near the lower end of the inclined portion 124) of the side frames 127 of the side frames / handrail units 120 and 122 is the second main strut 104. It is placed on the upper surface of one side 104-1a of the first beam 104-1 from the bottom, and the lower surface of the base end portion (region near the upper end of the inclined portion 124) of the upper horizontal portion 126 is below the first main column 102. Are placed on the upper surface of one side 102-2a of the second beam 102-2, and are detachably fastened by a plurality of bolts and nuts (see FIGS. 14 to 16 and 18). The lower end of the inclined portion 124 of the side frame 127 of the side frame / handrail unit 122 is detachably fastened to the second main strut 104 and the upper end to the first main strut 102 by a plurality of bolts and nuts. (FIGS. 14 and 16).

13, 15, 17, 24, and 25, the n-th other side stair unit, that is, the first other side stair unit 1Ub, the second other side stair unit 2Ub,. Since the n other-side staircase unit nUb can be composed of substantially common parts, the first other-side staircase unit 1Ub will be described as a representative of them.

The first other-side staircase unit 1Ub includes a pair of side frame / handrail units 130 and 132 and a plurality of footboard units 8 that are opposed to each other at an interval in the horizontal and horizontal directions. 24 and 25, the side frame / handrail units 130 and 132 are viewed from the back side in FIGS. 15 and 17. The side frame / handrail unit 130 is located on the outer side (distant side) in the horizontal lateral direction with respect to the first main column 102 and the second main column 104, and the side frame / handrail unit 132 is disposed on the first main column 102. And it is located inside (near side) in the horizontal horizontal direction with respect to the 2nd main support pillar 104. The side frame / handrail units 130 and 132 are respectively inclined to extend in an up and down direction, a lower horizontal part 135 extending horizontally from the lower end of the inclined part 134, and horizontally from the upper end of the inclined part 134. A side frame 137 having an upper horizontal portion 136 that extends and a handrail 138 that is integrally fixed to at least the upper surface of the inclined portion 134 of the side frame 137 are provided. In the side frame / handrail unit 130, the handrail 138 is fixed integrally and continuously to the upper surfaces of the lower horizontal portion 135, the inclined portion 134, and the upper horizontal portion 136 in the side frame 137, and in the side frame / handrail unit 132, The side frame 137 is integrally fixed to the upper surface of the inclined portion 134. It goes without saying that the handrail 138 is not installed when it is not necessary for the lower horizontal portion 135 and the upper horizontal portion 136 (for example, when facing the entrance of a building). The footboard unit 8 is detachably connected between the inclined portions 134 of the side frames 137 of the side frame / handrail units 130 and 132.

The upper surface of the lower horizontal portion 135 of the side frame / handrail unit 132 is formed lower than the upper surface of the lower horizontal portion 135 of the side frame / handrail unit 130, and the upper surface of the upper horizontal portion 136 of the side frame / handrail unit 132 is It is formed lower than the upper surface of the upper horizontal portion 136 of the frame / handrail unit 130. The basic configuration other than the configuration including the lower horizontal portion 135 of the side frame / handrail units 130 and 132 and the configuration of the upper surface of the upper horizontal portion 136 having different heights are respectively the side frame / handrail in the assembly-type staircase 2 shown in FIG. Since it is substantially the same as units 4 and 6, description thereof will be omitted. Moreover, the footboard unit 8 may use any of the footboard units 8 (the footboard unit 8 described with reference to FIGS. 6 to 12) in the assembly-type staircase 2. In the first other-side staircase unit 1Ub, the lower surface of the base end portion (region near the lower end of the inclined portion 134) of the lower horizontal portion 135 in the side frames 137 of the side frames / handrail units 130 and 132 is the first main column 102. Is placed on the upper surface of the other side 102-1b of the first beam 102-1 from the bottom, and the lower surface of the base end portion (region near the upper end of the inclined portion 134) of the upper horizontal portion 136 is the second main column 104. Is placed on the upper surface of the other side 104-1b of the first beam 104-1 from the bottom, and is detachably fastened by a plurality of bolts and nuts (see FIGS. 14 to 16, 18, and 19). The lower end of the inclined portion 134 of the side frame 137 of the side frame / handrail unit 132 is fastened to the second main column 104 and the upper end is fixed to the first main column 102 by a plurality of bolts and nuts. (FIGS. 14 and 16).

Referring to FIGS. 15 and 20 to 25, the n-th one-side staircase unit nUa (the first one-side staircase unit 1Ua, the second one-side staircase unit 2Ua, the third one-side staircase unit 3Ua,...) On the side frames and handrail units 110, 120, 120... Located on the distal end side of one side 102-na (102-1a, 102-2a, 102-3a...) Of the beam in the first main column 102. And the n-th other side stair unit nUb (the first other side stair unit 1Ub, the second other side stair unit 2Ub, the third other side stair unit 3Ub ... ), The side frame / handrail units 130, 130... Located on the tip side of the other side 102-nb (102-1b, 102-2b, 102-3b...) Of the first main column 102. Lower horizontal part 135, Between 35 ..., a plurality of treads units 8 each of which is detachably connected to form a horizontal upper surface. Each of the tread unit 8 that forms the horizontal upper surface of the n-th one-side staircase unit nUa (first one-side staircase unit 1Ua, second one-side staircase unit 2Ua, third one-side staircase unit 3Ua...) On the side frames and handrail units 112, 122, 122... Located on the base end side of one side 102-na (102-1a, 102-2a, 102-3a. The upper surfaces of the horizontal portions 115, 126, 126... And the nth other step unit nUb (first other step unit 1Ub, second other step unit 2Ub, third other step unit 3Ub ..) side frame and handrail units 132, 132 located on the proximal end side of the other side 102-nb (102-1b, 102-2b, 102-3b,...) Of the first main column 102. ···of Extending crosses the upper surface of the horizontal portion 135, 135,. This upper surface forms a landing. When the footboard unit 8 straddles the boundary between the upper edge of the inclined portion 116 of the side frame / handrail unit 110 and 112 of the first one-side staircase unit 1Ua and the upper horizontal portion 115, the height of the upper horizontal portion 115 is increased. Due to the difference, a part of the footboard unit 8 in the width direction is corrected to a cut shape, and this is dealt with. The same is true for the other stair units.

Referring to FIG. 15 and FIGS. 22 to 25, the (n + 1) th one-side staircase unit (n + 1Ua) (second one-side staircase unit 2Ua, third one-side staircase unit 3Ua, fourth one-side staircase unit 4Ua...) Of the second main strut 104, the lower horizontal portion 125 of the side frames and handrail units 120, 120... Located on the tip side of the beam one side 104-1a, 104-2a. Of the side stair unit nUb (the first other side stair unit 1Ub, the second other side stair unit 2Ub, the third other side stair unit 3Ub...), The other side 104− of the beam in the second main column 104. A plurality of footboard units 8 are detachably connected to the upper horizontal portion 136 of the side frame / handrail unit 130 located on the front end side of 1b, 104-2b... . Each of the footboard units 8 forming the horizontal upper surface is an n + 1 one-side staircase unit (n + 1Ua) (second one-side staircase unit 2Ua, third one-side staircase unit 3Ua, fourth one-side staircase unit 4Ua,...). The upper side of the lower horizontal portion 125 of the side frames and handrail units 122, 122... Positioned on the base end side of the beam one side 104-1a, 104-2a. The other side of the beam in the second main column 104 of the other side stair unit nUb (first other side stair unit 1Ub, second other side stair unit 2Ub, third other side stair unit 3Ub...). The upper side portions 136 of the side frames and handrail units 132, 132,... Located on the base end side of 104-1b, 104-2b,. This upper surface forms a landing.

At least the side frame / handrail units 120 and 122 of the one-side staircase unit n + 1Ua (2Ua, 3Ua, 4Ua...) Excluding the first one-side staircase unit 1Ua and the footboard unit 8 have substantially the same configuration. is doing. Further, at least the side frame / handrail units 130 and 132 of the other side stair unit nUb (2Ub, 3Ub, 4Ub...) And the footboard unit 8 have substantially the same configuration. Such common use of components contributes to the ease and speed of assembly of the assembly-type staircase 100 and cost reduction.

Referring to FIGS. 13, 15, and 17, the assembly-type staircase 100 is connected to and supported by the first auxiliary column unit 141 and the first auxiliary column unit 141 in such a manner that they can be separated from each other in the vertical direction. Are provided with (n + 1) th auxiliary strut units (second auxiliary strut unit 142, third auxiliary strut unit 143...). The first auxiliary column unit 141 is erected on the ground with a space in the horizontal vertical direction opposite to the second main column 104 with respect to the first main column 102.

Referring to FIGS. 26 and 27, the first auxiliary strut unit 141 made of steel has a pair of struts 150 that are opposed to each other at an interval and are upright in parallel, and between the upper end portion and the lower end portion of the strut 150. A plurality of, in the embodiment, two beam members 152, which extend at right angles to each of the columns 150 and are integrally connected, are provided. Each of the columns 150 is formed of a steel square pipe, and a steel plate substrate 151 is fixed to each lower end by welding so as to be orthogonal to each other. A rectangular support plate 153 having the same shape as each cross section of the support column 150 is fixed to each upper end of the support column 150 by welding so as to be orthogonal to each other, and a male screw member 154 is welded to each center of the support plate 153 by welding. It is fixed upright. Each of the beam members 152 is formed of a steel round pipe, and both ends thereof are fixed to the corresponding columns 150 by welding. As shown in FIGS. 15, 17, and 18, the first auxiliary column unit 141 is detachably fastened to the foundation B <b> 3 of the ground G via a plurality of bolts via each substrate 151 of the column 150. The

Since the (n + 1) th auxiliary strut unit (second auxiliary strut unit 142, third auxiliary strut unit 143...) Is composed of common parts, the second auxiliary strut will be represented below. The unit 142 will be described. Note that the (n + 1) th auxiliary strut unit (second auxiliary strut unit 142, third auxiliary strut unit 143...) Is made up of common parts to facilitate assembly of the assembly-type staircase 100 and speed up. Contributes to cost reduction.

Referring to FIGS. 26 and 27, the second auxiliary strut unit 142 made of steel has a pair of struts 160 which are opposed to each other and are parallel and upright, and a space between the struts 160 is perpendicular to each of the struts 160. A plurality of, in the embodiment, two beam members 162 and 164 that are connected to each other. Each of the columns 160 is formed of a steel square pipe. The beam member 162 formed of a steel round pipe is disposed between the upper ends of each of the columns 160, and both ends are fixed to the inner side surface of the corresponding column 160 by welding. The beam member 164 is formed of an elongated steel plate having a channel shape in cross section, which includes a web 164W and an upper flange 164U and a lower flange 164L that extend at right angles in the same direction from the upper end and the lower end of the web 164W. It extends between the lower ends of each. A plurality of mounting holes 164h are formed at both ends and the center of the web 164W, and one mounting hole 164h is formed at both ends of the lower flange 164L. The lower ends of the columns 160 are fixed to the upper surfaces of both ends of the upper flange 164U of the beam member 164 by welding. A handrail 166 is integrally fixed to the upper surface of the upper flange 164U of the beam member 164 by welding between the regions below the center of each column 160. Both ends of the handrail portion 166A of the handrail 166 are fixed to the inner side of the corresponding column 160. The handrail 166 may have the same configuration as the handrail 18 (FIG. 1) described above. A rectangular support plate 167 having the same shape as each cross section of the support column 160 is fixed to the upper end of each support column 160 by welding, and a male screw member 168 is fixed upright and fixed to the center of each support plate 167 by welding. ing.

The second auxiliary strut unit 142 has male screw members 154 in which attachment holes 164h formed at both ends of the lower flange 164L of the beam member 164 are upright at the upper end of the corresponding strut 150 of the first auxiliary strut unit 141. And the lower surfaces of both ends of the lower flange 164L of the beam member 164 are superposed on the upper end surface (the upper surface of the support plate 153) of the column 150 of the first auxiliary column unit 141. A nut (not shown) is thread-engaged with a male screw member 154 protruding from the mounting holes 164h formed at both ends of the lower flange 164L of the beam member 164 and standing upright at the upper end of the corresponding column 150, and the second auxiliary column unit Both end portions of the beam member 164 in 142 are fastened to the upper ends of the columns 150 of the first auxiliary column unit 141, respectively, in a freely detachable manner. In the same manner, the third auxiliary column unit 143 and the (n + 1) th auxiliary column unit are sequentially overlapped and connected on the second auxiliary column unit 142 (see FIG. 13 to 15, 17 and 18). Such a configuration contributes to facilitating and speeding up the assembly of the assembly-type staircase 100 and reducing costs.

Referring to FIGS. 14 and 15, the upper side of the side frame / handrail unit 110 of the first one-side staircase unit 1 </ b> Ua located on the tip side of the one side 102-1 a of the beam 102-1 in the first main column 102. Of the lower horizontal portion 135 of the side frame / handrail unit 130 located on the distal end side of the other side 102-1b of the beam 102-1 in the first main column 102 of the front end of the portion 115 and the first other side stair unit 1Ub. The distal end is detachably connected and supported to the lower end portion of the second auxiliary column unit 142 (both ends of the beam member 164) by bolts and nuts.

The tip of the upper horizontal portion 126 of the side frame / handrail unit 120 located on the tip side of the one side 102-2a of the beam 102-2 in the first main column 102 and the second other side of the second one-side staircase unit 2Ua. The tip of the lower horizontal portion 135 of the side frame / handrail unit 130 located on the tip side of the other side 102-2b of the beam 102-2 in the first main column 102 of the staircase unit 2Ub is the third auxiliary column unit 143. Are detachably connected and supported by bolts and nuts at the lower end portions (both ends of the beam member 164).

In this way, one side (102) of the (n + 1) -th side unit (2Ua, 3Ua...) Of the (n + 1) th one-side staircase unit (2Ua, 3Ua. -2a, 102-3a ...) and the tip of the upper horizontal portion (126, 126 ...) of the side frame / handrail unit (120, 120 ...) and the (n + 1) th other side step. The other side (102-2b, 102-3b...) Of the n + 1-th beam (102-2, 102-3...) From the bottom of the first main column 102 of the unit (2Ub, 3Ub...). ) Of the lower horizontal portion 135 of the side frame / handrail unit (130, 130...) Positioned at the tip side of the lower end portion (143, 144...) Of the corresponding n + 2 auxiliary column unit (143, 144. Bolts and nuts on both ends of the beam member 164 Coupled-supported detachably by. Such a configuration contributes to facilitating and speeding up the assembly of the assembly-type staircase 100 and reducing costs.

Referring to FIGS. 13 and 15 to 17, the assembly-type staircase 100 is connected to and supported by the first other auxiliary strut unit 171 and the first other auxiliary strut unit 171 sequentially and detachably. The (n + 1) th other auxiliary column unit (second other auxiliary column unit 172, third other auxiliary column unit 173...) That is extended vertically upward is provided. The first other auxiliary column unit 171 stands upright on the ground G spaced apart in the horizontal vertical direction opposite to the first main column 102 with respect to the second main column 104.

Referring to FIG. 28 and FIG. 29, the first other auxiliary column unit 171 is substantially different from the first auxiliary column unit 141 (FIGS. 26 and 27) only in height. Since it has the same structure, the same part is shown with the same code | symbol and description is abbreviate | omitted. In addition, the second other auxiliary column unit 172, which is partially omitted in FIGS. 28 and 29, has a height higher than that of the second auxiliary column unit 142 (FIGS. 26 and 27). Since they have substantially the same configuration, the same parts are denoted by the same reference numerals, and description thereof is omitted. In addition, the (n + 1) th other auxiliary column unit including the second other auxiliary column unit 172 (second other auxiliary column unit 172, third other auxiliary column unit 173, fourth other auxiliary column unit) 174 ...) have substantially the same configuration. Such a configuration contributes to facilitating and speeding up the assembly of the assembly-type staircase 100 and reducing costs.

The first auxiliary column unit 141, the second auxiliary column unit 142... The second other auxiliary column on the first other auxiliary column unit 171 in substantially the same manner as the nth auxiliary column unit. The column unit 172 is connected and supported on the second other auxiliary column unit 172 by a bolt 154 and a nut so as to be detachable in the vertical direction in order. Such a configuration contributes to facilitating and speeding up the assembly of the assembly-type staircase 100 and reducing costs.

With reference to FIG.15 and FIG.16, the side frame and handrail which are located in the front end side of the one side 104-1a of the 1st beam 104-1 from the bottom in the 2nd main support | pillar 104 of the 2nd one side staircase unit 2Ua. The side frame located on the front end side of the other side 104-1b of the first beam 104-1 from the bottom of the second main column 104 of the second main column 104 of the front end of the lower horizontal portion 125 of the unit 120 and the first other side staircase unit 1Ub. The tip of the upper horizontal portion 136 of the handrail unit 130 is detachably connected and supported to the lower end portion (both ends of the beam member 164) of the second other auxiliary support unit 172 by bolts and nuts. Such a configuration contributes to facilitating and speeding up the assembly of the assembly-type staircase 100 and reducing costs.

The n + 1-th beam from the bottom of the second main column 104 (104-2, 104-3,...) Of the (n + 2) one-side staircase unit (the third one-side staircase unit 3Ua, the fourth one-side staircase unit 4Ua...). ..) side frame located on one side (104-2a, 104-3a...) Of one side (tip), the tip of the lower horizontal portion 125 of the handrail unit 120, and the (n + 1) th other side staircase unit (second side) The other side (104-2b) of the n + 1-th beam (104-2, 104-3...) From the bottom of the second main column 104 of the staircase unit 2Ub, the third other-side staircase unit 3Ub. , 104-3b,..., 104-3b..., 104-3b... (Both ends of beam member 164) Withdrawal is rotatably connected to and supported in by a bolt and nut. Such a configuration contributes to facilitating and speeding up the assembly of the assembly-type staircase 100 and reducing costs.

14-16, the length of the 1st auxiliary | assistant support | pillar unit 141 is lengthened, and the one side 102-1a of the beam 102-1 in the 1st main support | pillar 102 of 1st one-sided staircase unit 1Ua. The front side of the upper horizontal portion 115 of the side frame / handrail unit 110 and the front side of the other side 102-1b of the beam 102-1 in the first main column 102 of the first other side stair unit 1Ub. There is also another embodiment in which the tip of the lower horizontal portion 135 of the side frame / handrail unit 130 positioned at is connected to and supported by the upper end portion of the first auxiliary column unit 141 by bolts and nuts. In this case, one side (102-2a) of the n + 1th beam (102-2, 102-3...) From the bottom of the first main column 102 of the (n + 1) th one-side staircase unit (2Ua, 3Ua...). , 102-3a...) And the tip of the upper horizontal portion (126, 126...) And the (n + 1) th other side staircase unit (120, 120. 2Ub, 3Ub..., On the other side (102-2b, 102-3b...) Of the (n + 1) th beam (102-2, 102-3...) From the bottom in the first main column 102. The tip of the lower horizontal portion 135 of the side frame / handrail unit (130, 130...) Located on the tip side is bolted to the upper end of the corresponding n + 1th auxiliary column unit (142, 143...). Connected and supported by a nut It becomes Rukoto.

Similarly, the length of the first other auxiliary strut unit 171 is increased, and the one side 104-1a of the first beam 104-1 from the bottom of the second main strut 104 of the second one-side staircase unit 2Ua. The other side 104 of the first beam 104-1 from the bottom of the second main strut 104 of the front end of the lower horizontal portion 125 of the side frame / handrail unit 120 and the first other side stair unit 1Ub located on the front end side of the first main column 104. Other implementations in which the tip of the upper horizontal portion 136 of the side frame / handrail unit 130 located on the tip side of the -1b is detachably connected to and supported by the upper end of the first other auxiliary column unit 171 with bolts and nuts. There is also a form. In this case, the n + 1 second beam (104-2, 104) from the bottom of the second main column 104 of the (n + 2) one-side stair unit (third one-side stair unit 3Ua, fourth fourth stair unit 4Ua,...). −3...) On one side (104-2a, 104-3a...) On the front end side of the side frame / handrail unit 120, the front end of the lower horizontal portion 125 and the (n + 1) th other side staircase unit (second Other side staircase unit 2Ub, third other side staircase unit 3Ub..., The other side of n + 1-th beam (104-2, 104-3. 104-2b, 104-3b...)) And the top horizontal portion 136 of the side frame / handrail unit 130 located on the front end side of the (n + 1) th other auxiliary column unit (172, 173...). Bolts and nuts at the top It becomes more detachably connected and supported to be able to to.

It is a disassembled perspective view which shows embodiment of the assembly-type staircase comprised according to this invention. It is a side view of the side frame and handrail unit of the assembly-type staircase shown in FIG. It is a front view of the support | pillar unit of the assembly-type staircase shown in FIG. 1, Comprising: It is a front view which abbreviate | omits and shows a brace member. FIG. 2 is an exploded side view of a side frame / handrail unit and a column unit of the assembly-type staircase shown in FIG. 1. It is a perspective view which shows a part of embodiment of a part of side frame and handrail unit and a footboard unit in a cross section. It is a perspective view which shows other embodiment of a footboard unit. It is A arrow directional view of FIG. It is a B arrow line view of FIG. It is a perspective view which shows a part in further sectional embodiment of a part of side frame and handrail unit, and a footboard unit in a cross section. FIG. 10 is a cross-sectional view of an anti-slip and decorative board provided in the tread board unit shown in FIG. 9. It is a perspective view which shows some other embodiment of a tread board unit in a cross section. It is a perspective view which shows a part of further another embodiment of a footboard unit. FIG. 6 is a perspective view showing a part of another embodiment of an assembly-type staircase constructed according to the present invention. It is the side view which looked at the assembly-type staircase shown in FIG. 13 from the diagonally right back side in FIG. 13, Comprising: It is a side view which shows a main strut, a part of staircase unit, and a part of auxiliary strut unit. It is the front view which looked at the assembly type staircase shown in FIG. 13 from diagonally right in FIG. 13, Comprising: It is a front view which shows a main support | pillar, a part of staircase unit, and an auxiliary support | pillar unit. It is the side view which looked at the assembly type staircase shown in FIG. 13 from diagonally left in FIG. 13, Comprising: It is a side view which shows a main support | pillar, a part of staircase unit, and a part of auxiliary support | pillar unit. It is the front view which looked at a part of assembly type staircase shown in FIG. 13 from diagonally right in FIG. It is the side view which looked at the assembly type staircase shown in FIG. 13 from the diagonally right back side in FIG. 13, Comprising: It is a side view which abbreviate | omits and shows a part. It is a figure which expands and shows a part of lower end part of FIG. It is the front view which looked at the outer side frame and the handrail unit in the 1st one-side staircase unit from diagonally right in FIG. It is the front view which looked at the inner side frame and handrail unit in the 1st one-side staircase unit from diagonally right in FIG. It is the front view which looked at the outer side frame and handrail unit in the 2nd one-side staircase unit from diagonally right in FIG. It is the front view which looked at the inner side frame and handrail unit in the 2nd one-side staircase unit from diagonally right in FIG. It is the front view which looked at the outer side frame and handrail unit in a 1st other side staircase unit from the diagonally left back side in FIG. It is the front view which looked at the inner side frame and handrail unit in a 1st other side staircase unit from the diagonally left back side in FIG. It is a front view which decomposes | disassembles and shows a 1st auxiliary | assistant support | pillar unit and a 2nd auxiliary | assistant support | pillar unit. It is the side view which looked at FIG. 26 from the left in FIG. It is a front view which decomposes | disassembles and shows a 1st other auxiliary | assistant support | pillar unit and a part of 2nd other auxiliary | assistant support | pillar unit. It is the side view which looked at FIG. 28 from the left in FIG.

Explanation of symbols

2, 100: Assembling-type stairs 4, 6: Side frame / handrail unit 8: Footboard unit 10: Support unit

Claims (12)

A side frame having an inclined part extending in an up-down direction and having a lower end supported on the ground and an upper horizontal part extending horizontally from the upper end of the inclined part, and at least the inclination in the side frame A pair of side frames and handrail units that are integrally fixed to the upper surface of the section and that are opposed to each other at an interval in the horizontal direction; an inclined portion and a horizontal portion in each side frame of the side frame and handrail unit A plurality of stepping plate units that are detachably connected between the sections; and stand upright on the ground and are detachably connected to the top ends of the upper horizontal sections of the side frames and handrail units so that the upper horizontal section is substantially above the ground. The upper surface of each of the footboard units that are detachably connected between the horizontal portions of each of the side frame and the handrail unit is on a substantially common horizontal plane.
An assembly staircase characterized by that. The strut unit includes a pair of struts facing each other at an interval and standing in parallel, a plurality of beam members extending between the struts at right angles to each of the struts and integrally connected to each other, and corresponding struts. A pair of brace members, one end of which is rotatably supported so as to be parallel to each other, each of the brace members having a folding position extending along a corresponding column, and the other end at one end. Each brace member is positioned at the connecting position, and the other end is separated from the lower surface of the upper horizontal portion of the corresponding side frame / handrail unit. The prefabricated staircase according to claim 1, which is freely connected. The column unit includes an upper end beam member that integrally connects the upper ends of each column, and the handrail includes the upper surface of the inclined portion and the upper horizontal portion of one of the side frame / handrail unit, and the side frame / handrail unit. Are fixed integrally to the upper surface of the inclined portion and the upper surface of the upper end beam member of the column unit, respectively, or are integrated to the upper surface of the inclined portion and the upper surface of the upper horizontal portion of each of the side frame / handrail unit. The assembly-type stair according to claim 1 or 2, which is fixed. 4. The assembly-type staircase according to claim 2, wherein a lower end of each inclined portion of the side frame / handrail unit and / or a lower end of each column of the column unit is supported on the ground via jack means. A first main support column and a second main support column are provided upright on the ground at intervals in the horizontal vertical direction, and the first main support column and the second main support column are orthogonal to the horizontal vertical direction. A plurality of beams extending horizontally on both sides in the horizontal direction are arranged in the vertical direction at intervals from each other, and the beams arranged on the second main column are respectively arranged on the first main column. Positioned at the center height of each of the beams
A first one-side staircase unit is detachably disposed between the ground on the second main column side and the upper surface on one side of the first beam from the bottom of the first main column. Between the one-side upper surface of the n-th beam from the bottom and the one-side upper surface of the n + 1-th beam from the bottom of the first main column, an (n + 1) -side one-side staircase unit is detachably disposed.
The first other-side staircase unit is detachable between the other upper surface of the first beam from the bottom of the first main column and the other upper surface of the first beam from the bottom of the second main column. An n + 1 other-side staircase unit is disposed between the other upper surface of the n + 1-th beam from the bottom of the first main column and the other upper surface of the n + 1-th beam from the bottom of the second main column. Is detachably arranged,
The first one-side staircase unit is an inclined portion that extends in an up-down direction and has a lower end supported on the ground and an upper horizontal portion that extends horizontally from the upper end of the inclined portion. A pair of side frames and handrail units, each having a frame and a handrail integrally fixed to at least the upper surface of the inclined portion of the side frame, and facing each other at an interval in the horizontal direction; A plurality of footboard units that are detachably connected between the inclined portions of the side frame;
The (n + 1) th one-side staircase unit and the nth other-side staircase unit are inclined in an up and down direction, a lower horizontal portion extending horizontally from the lower end of the inclined portion, and horizontally from an upper end of the inclined portion. A pair of side frames and handrails, each having a side frame having an upper horizontal portion extending; and a handrail integrally fixed to the upper surface of at least the inclined portion of the side frame and facing each other at an interval in the horizontal direction A plurality of footboard units that are detachably connected between the inclined portions of each side frame of the side frame / handrail unit;
The upper horizontal portion of the side frame / handrail unit located on the tip side of one side of the n-th beam from the bottom in the first main column of the n-th one-side staircase unit, and the first of the n-th other-side staircase unit A plurality of footboard units are detachably connected to form a horizontal upper surface between the bottom horizontal portion of the side frame / handrail unit located on the other end of the n-th beam from the bottom of the main column. ,
The lower horizontal portion of the side frame / handrail unit located on the tip side of one side of the nth beam from the bottom of the second main column of the (n + 1) one-sided staircase unit, and the second of the nth other-side staircase unit A plurality of footboard units are detachably connected to the upper horizontal portion of the side frame / handrail unit located on the other end of the n-th beam from the bottom of the main strut so as to form a horizontal upper surface. ing,
An assembly staircase characterized by that. At least the side frame / handrail unit and the footboard unit of each one-side staircase unit excluding the first one-side staircase unit have substantially the same configuration, and each of the other side staircase units has at least the side frame / handrail. The assembly-type staircase according to claim 5, wherein the unit and the footboard unit have substantially the same configuration. The upper surface of the upper horizontal portion of the side frame / handrail unit located on the one base end side of the n-th beam from the bottom of the first main column of the n-th one-side stair unit and the n-th other-side stair unit, The upper surface of the lower horizontal portion of the side frame / handrail unit located on the other base end side of the n-th beam from the bottom in the first main column is below the first main column of the n-th one-side step unit. To the other side of the n-th beam from the bottom of the first main strut of the upper horizontal portion of the side frame / handrail unit and the n-th other side stair unit located on the tip side of one side of the n-th beam from the bottom. Each of the footboard units that are formed lower than the upper surface of the lower horizontal portion of the side frame / handrail unit located on the front end side and that form the horizontal upper surface is n from the bottom of the first main column of the n-th one-side staircase unit. Of the upper horizontal part of the side frame / handrail unit located at the base end of one side of the second beam The surface and the upper side of the lower horizontal portion of the side frame / handrail unit located on the other base end side of the nth beam from the bottom of the first main strut of the nth other side staircase unit Exist,
The upper surface of the lower horizontal portion of the side frame / handrail unit located on the one base end side of the n-th beam from the bottom of the second main column of the (n + 1) one-side stair unit, and the n-th other step unit The upper surface of the upper horizontal portion of the side frame / handrail unit located on the other base end side of the nth beam from the bottom in the second main column is the second main column of the (n + 1) one-side step unit. The upper surface of the lower horizontal portion of the side frame / handrail unit located on one end of the n-th beam from the bottom, and the other of the n-th beam from the bottom of the second main column of the n-th other side stair unit Each of the footboard units which are formed lower than the upper surface of the upper horizontal portion of the side frame / handrail unit located on the front end side of the side and form the horizontal upper surface is the lower side of the second main column of the (n + 1) one-side staircase unit. Side frame and handrail unit located on the base end side of one side of the nth beam from And the upper horizontal portion of the side frame / handrail unit located on the other base end side of the n-th beam from the bottom of the second main column of the n-th other side stair unit. 7. A built-in staircase according to claim 5 or claim 6 extending across the top surface. The upper surface of the upper horizontal portion of the side frame / handrail unit located on the tip side of one side of the n-th beam from the bottom in the first main column of the n-th one-side staircase unit, and the n-th other-side staircase unit, From the bottom of the second main column, the upper surface of the lower horizontal portion of the side frame / handrail unit located on the other end of the first beam from the bottom of the first main column, and the (n + 1) th one-side staircase unit. The upper surface of the lower horizontal portion of the side frame / handrail unit located on the tip side of one side of the nth beam and the nth other beam from the bottom of the second main column of the nth other staircase unit The assembling-type stairs according to claim 7, wherein handrails are selectively fixed integrally to the upper horizontal portion of the side frame / handrail unit located on the front end side. The first auxiliary strut unit standing upright on the ground with a space in the horizontal and vertical direction opposite to the second main strut, and the first main strut unit can be sequentially detached on the first auxiliary strut unit. N + 1-th auxiliary strut unit connected and supported to extend vertically upward,
In the first one-side staircase unit, the top end of the upper horizontal portion of the side frame / handrail unit located on the one-end front side of the first beam from the bottom in the first main column and the first other-side staircase unit, The front end of the lower horizontal portion of the side frame / handrail unit located on the other front end side of the first beam from the bottom of the first main support is the lower end of the (n + 1) th auxiliary support unit or the nth auxiliary support unit. It is connected and supported at the upper end so that it can be detached.
The tip of the upper horizontal portion of the side frame / handrail unit located on the tip side of one side of the (n + 1) -th beam from the bottom of the first main column of the (n + 1) one-side staircase unit and the n + 1-th other-side staircase unit The front end of the lower horizontal portion of the side frame / handrail unit located on the other front end side of the (n + 1) -th beam from the bottom in one main strut is the lower end portion of the corresponding n + 2 auxiliary strut unit or the (n + 1) th auxiliary The assembling-type staircase according to any one of claims 5 to 8, which is detachably connected to and supported by the upper end portion of the column unit. The assembly-type staircase according to claim 9, wherein each of the (n + 1) th auxiliary strut units is configured by a common part. With respect to the second main column, on the first other auxiliary column unit upright on the ground and spaced in the horizontal and vertical direction opposite to the first main column, and on the first other auxiliary column unit It is equipped with another auxiliary column unit of (n + 1) th that is connected and supported so as to be detachable sequentially and extended vertically upward,
In the second one-side staircase unit, the tip of the lower horizontal portion of the side frame / handrail unit located on the one-end tip side of the first beam from the bottom of the second main column and the first other-side staircase unit, The top end of the upper horizontal portion of the side frame / handrail unit located on the other end of the first beam from the bottom in the second main column is the lower end of the (n + 1) th other auxiliary column unit or the nth other column. It is connected and supported to the upper end of the auxiliary column unit so that it can be detached.
The tip of the lower horizontal portion of the side frame / handrail unit located on the tip side of one side of the (n + 1) -th beam from the bottom of the second main column of the (n + 2) one-sided staircase unit and the (n + 1) th other-side staircase unit The top end of the upper horizontal portion of the side frame / handrail unit located on the other end of the n + 1-th beam from the bottom of the second main support is the lower end of the (n + 2) other auxiliary support unit or the other of the (n + 1) th post. The assembly-type staircase according to any one of claims 5 to 10, which is detachably connected and supported to an upper end portion of the auxiliary column unit. The assembly-type staircase according to claim 11, wherein each of the (n + 1) th other auxiliary strut units is composed of a common part.

Images