JP2015137515A - staircase structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a staircase structure that may be assembled in a short period of time, has flexibility regarding inclination of the stair, and may be converted to a staircase of other forms.SOLUTION: A staircase structure has a plurality of stairs, each of which has a tread section and a riser section, placed on bridgeboards. A downward protrusion is provided at each of the two ends along the top edge of the tread section and the two ends along the lower edge of the riser section, along with staircase retaining girders placed on the bridgeboards and have horizontal slits at the same interval as the stairs, and a plurality of piece materials having a groove and are disposed on the staircase retaining girders in alignment with the horizontal slits. The staircase is unified by inserting, on the staircase retaining girders, the downward protrusions on both ends of the upper edge of the tread section of the stair in the lower side and the downward protrusions on both ends of the lower edge of the lower tread section of the riser section of the stair in the upper side into the grooves of the corresponding piece materials through the horizontal slits on the staircase retaining girders.

Description

  The present invention relates to a staircase structure, and more particularly to a staircase structure that is advantageous for a temporary staircase (temporary staircase) in terms of construction in a short time and miniaturization and commonization of members.

  Temporary staircases are used for railway station premises and platform improvement work. Alternatively, a temporary staircase may be laid and temporarily used in an event hall, a bleacher, a bench, or the like.

  In particular, in the railway station premises and in the platform improvement work, it takes time between the last train and the first train to carry in and assemble the members in the station yard. For this reason, a temporary staircase structure that can be constructed in a short time is desired.

  In contrast, until now, steel or wooden structural members manufactured in advance at the factory have been laid in a process of assembling on-site. In such a case, when the structural member is enlarged in order to shorten the laying work time, it is necessary to temporarily remove and relocate the automatic ticket gate, etc., when carrying in the platform.

  Furthermore, the invention of patent document 1, 2 grade | etc., Is proposed about the conventional staircase structure. The invention described in Patent Document 1 provides a plurality of assembly units in which side girders are integrated on both the left and right sides of a step bar, and the connecting portions provided on the upper and lower sides of the side girders of the assembly unit are bolt nuts. A unit group is formed by connecting to form a staircase structure.

  In the invention described in Patent Document 2, a plurality of sawtooth staircase members are sequentially fastened with bolts and nuts to a plurality of receiving portions provided at predetermined intervals to form a staircase structure.

JP 2007-126912 A JP-A-7-82853

  In the inventions described in Patent Documents 1 and 2, a staircase structure is obtained by sequentially fastening assembly units or staircase members with bolts and nuts. Therefore, a bolt and nut fastening operation and a tool therefor are necessary. Further, the fastening operation of the bolt and nut is not suitable for a short-time operation at the time of closing the track at night.

  Moreover, in the structure of invention of patent document 1, 2, since there is no flexibility with respect to the height and inclination | tilt angle of a staircase, since it becomes a one-item production system for every height of a staircase, there is no versatility, such as diversion. .

  Furthermore, when assembling the stairs, the conventional structure requires work from the wall side or under the stairs, which limits the space for installing the temporary stairs. In the conventional structure, no effective proposal has been made for expansion of the staircase width.

  Therefore, in view of the conventional provisional staircase structure and assembly method and the inventions described in Patent Documents 1 and 2, the object of the present invention is that the staircase member is constituted by a small-sized member advantageous for transporting and tightening. To provide a temporary staircase structure that can be assembled and constructed in a short time without the need for tools, can be easily adjusted to the height of the staircase, and can be used for other staircase shapes. .

  It is another object of the present invention to provide a temporary staircase structure that can be assembled only from the upper surface of the staircase.

  Another object of the present invention is to provide a temporary staircase structure that can be easily expanded with respect to the staircase width.

  Furthermore, an object of the present invention is to provide a staircase structure that can form a normal fixed staircase by using a member that is common to the provisional staircase structure, particularly in view of commonality and miniaturization of members. It is to provide.

  A first aspect of the present invention that achieves the above object is a staircase structure in which a plurality of stairs each having a tread plate portion and a kick-up portion are arranged in a sasara girder, the upper end side of the tread plate portion A staircase girder having a downward projection on each of both ends of the lower end side of the kick-up portion, and further having a lateral slit at each interval where the staircase is arranged, and is placed on the sasara girder The staircase support girder has a plurality of pieces of material arranged corresponding to the lateral slits and having grooves, and on the staircase girder, the upper end side of the tread plate portion of the staircase arranged on the lower step side The downward projections at both ends and the downward projections at both ends of the lower end side of the stepped-up plate portion of the raised portion of the staircase arranged on the upper stage side pass through the stair support girder horizontal slit, and the corresponding piece material It is inserted and integrated into the groove of That.

  In a preferred embodiment of the first aspect, firstly, the staircase girder is arranged on both sides of the staircase, and further, a frame structure is formed by cross beams perpendicular to the direction of the staircase girder. Features.

  A preferred embodiment of the first aspect described above has a rising portion having a gap along the lower end side along the upper end side of the step plate portion of the staircase, and the raised portion of the upper staircase is formed on the lower step side. The gap is formed so as to cover the rising portion of the staircase and cover the lower end side of the raised portion of the upper staircase.

  According to a preferred embodiment of the first aspect, thirdly, each of the plurality of pieces is formed by overlapping three steel materials, and the height of the central steel material is set lower than the steel materials on both sides, A downward projection on both ends of the upper end side of the tread plate portion corresponding to each of the steel materials on both sides and a downward projection on both ends of the lower end side of the kick-up portion are formed. .

  According to a preferred aspect of the first aspect of the invention, fourthly, the downward projections on both side ends of the lower end side of the raised portion have a long and short two-stage projection, and the short projection is formed of the piece material. A long protrusion is inserted into the groove and inserted into a space formed in the upper portion of the central steel material between the steel materials on both sides to prevent lateral displacement of the staircase.

  The preferable aspect in the first aspect is characterized in that, in the fourth preferable aspect, the piece material has a height corresponding to the height of the steps.

  In a preferred embodiment of the first aspect described above, in the fourth preferred embodiment, the piece has a predetermined height, a liner disposed on the lower side of the piece, and a height of the staircase. According to this, the height of the liner is adjusted.

  A preferred embodiment of the first aspect is the fourth preferred embodiment, wherein the piece material further forms a regular polygon, corresponds to each side of the regular polygon, and has a height of the staircase. Bolt through holes that are fixed to the stair girder are formed at corresponding positions.

  In a further preferred aspect of the first aspect, fifthly, the stair width is expanded by connecting the stair support beams back to back.

  According to a further preferred aspect of the first aspect, sixthly, the staircase girder is connected back to back to expand the staircase width.

  In a preferred embodiment of the first aspect, sixthly, the step plate portion of the stairs and the kick-up portion are formed so as to be foldable by a hinge.

  In a preferred embodiment of the first aspect described above, seventhly, a scissor plate portion is provided at a rear end portion of the step plate portion of the staircase, and an upper end portion of the kick-up portion can be sandwiched between the scissors plate portion, The tread plate portion and the kick-up portion can be divided.

  According to the first aspect, the staircase structure member is miniaturized, it is easy to carry in the member in the station, and removal and transfer of an automatic ticket gate or the like is not necessary. Furthermore, since the fastening operation of the bolts and nuts is unnecessary in the assembly, the construction can be performed in a short time.

  The use of the piece material facilitates the adjustment of the kicking height according to the stairs height. As a result, the height of the stairs can be made uniform to enable handling of general-purpose products.

  In addition, the existing staircase structure required work from the wall side or the staircase when assembling the staircase at the site, but the work method only from the top of the staircase should be used to reduce restrictions on the temporary staircase installation space. Can do.

  Furthermore, the staircase can be increased in the horizontal direction while securing rigidity by connecting adjacent staircase support beams.

It is a figure which shows typically the step structure according to this invention. It is a figure further explaining the relationship between a sasara girder and a staircase girder. It is a figure explaining the relationship between a staircase girder and a piece material. It is a figure explaining integration of the stair step part (stairs) located up and down. It is a figure explaining the insertion fixation of the stair to a piece material. It is a figure which expands and shows a piece part. It is a schematic perspective view of one Example of a piece material. It is the schematic which shows the piece material seen from the arrow direction A of FIG. It is the schematic which shows the piece material seen from the arrow direction B of FIG. It is the schematic which shows the piece material seen from the arrow direction C of FIG. It is sectional drawing of the state in which the projection part of the staircase was inserted in the piece material. It is a figure which shows the 1st method as an adjustment method of the height of stairs. It is a figure which shows the 2nd method as an adjustment method of the height of stairs. It is a figure which shows the 3rd method as an adjustment method of the height of stairs. It is a figure which shows the Example of the 3rd method of the adjustment method of the height of stairs. It is a figure which shows the example which forms stairs with another structure. It is a figure explaining the expansion to the horizontal direction of a staircase.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, an Example is for understanding of invention and application of this invention is not limited to this. The invention described in the claims and equivalents thereof are included in the scope of protection of the present invention.

[Temporary staircase structure]
FIG. 1 is a diagram schematically showing a staircase structure according to the present invention. In FIG. 1, for easy understanding of the structure, a stair step part (hereinafter simply referred to as a staircase) 3 is partially removed and shown.

  Corresponding staircase girder 2A, 2B (hereinafter simply referred to as staircase girder 2 as appropriate) is arranged on a sasara girder 1A, 1B (hereinafter simply referred to as “sasarara girder 1” as appropriate) arranged on both sides with an interval of a predetermined width. Has been.

  The staircase 3 having the tread plate portion 3A and the kick-up portion 3B with each of the staircase receiving girders 2A and 2B as both end sides is sequentially assembled and arranged in a plurality of steps, and a temporary staircase structure is obtained.

  FIG. 2 is a diagram for further explaining the relationship between the sasara girder 1 and the staircase girder 2.

  In FIG. 2, (1) is a cross-sectional view, and (2) is a top view with the step 3 removed. The sasara girder 1 is a steel material having an H-shaped cross section, and the step receiving girders 2A and 2B each have a U-shaped cross section, and are placed on the sasara girder 1 with the inner sides facing each other.

  The frame structure is formed by the stair support beams 2A and 2B arranged in parallel and the horizontal beam 4 perpendicular to them, so that the configuration can be enhanced.

  A plurality of fixing pieces 5 are fixed to the inside of the stairs receiving girder 2 with screws at intervals where the stairs 3 are arranged.

  As described above, the staircase structure according to the present invention is configured such that the staircase support girder 2 and the horizontal girder 4 have a frame structure, and the staircase 3 is sandwiched between the pieces 5 supported by the staircase support girder 2. Details of the structure in which the staircase 3 is sandwiched between the piece members 5 will be described later, but the upper and lower staircases 3 can be overlapped with each other, and the rigidity is enhanced by integration.

  Furthermore, since the upper and lower stairs 3 are sandwiched and overlapped with the piece 5, no assembly tool is required for the assembly work of the stairs 3 at the site. Such characteristics will become more apparent from the following description.

  FIG. 3 is a view for explaining the positional relationship between the staircase girder 2 and the piece 5. In FIG. 3, (1) is a figure which shows the inner side of the stair girder 2, and (2) is the top view. The piece material 5 is fixed to the stair support beam 2 with screws at intervals of the staircase 3. In the upper part of the piece 5, a lateral slit 6 is formed into which the tread plate portion 3 </ b> A of the staircase 3 and the protruding portion of the kick-up portion 3 </ b> B are inserted. As will be described in detail later, the tread plate portion 3 </ b> A and the protruding portion of the kick-up portion 3 </ b> B inserted from the lateral slit 6 are inserted into the piece 5 and fixed.

[Integration of stairs 3]
FIG. 4 is a diagram for explaining the integration of the stairs 3 located in the upper and lower stages. As an example, the staircase 3 is formed by bending a single steel plate to form a tread plate portion 3A and a kick-up portion 3B. Further, a rib (not shown) is provided on the back surface side of the step board portion 3A, and folding is provided on both sides to enhance rigidity.

  Downward projecting portions 30 are provided on both sides of the tip side of the footboard portion 3A, and downward projecting portions 31 are provided on both ends of the lower end side of the kick-up portion 3B. The protrusion 30 of the step plate portion 3A of the lower stairs 3 and the protrusion 31 of the riser 3B of the upper stairs 3 are inserted through the same slit 6 of the stairs receiving girder 2, and the same piece 5 fixed with screws. It is inserted and fixed in the groove part, and integrated.

  As will be described later, the height of the stairs 3 is adjusted by adjusting the height of the piece 5. At this time, by adjusting the height, a gap along the lower end side of the kick-up portion 3B (a shaded portion 32 region) is formed, but the kick-up portion 3B of the upper staircase 3 is connected to the rising portion 33 of the lower staircase 3. Corresponding to cover. Thereby, the clearance gap 32 along the lower end side of the kick-up part 3B of the upper stairs 3 can be hidden.

  FIG. 5 is a diagram for explaining the insertion and fixing of the stairs 3 to the piece 5. In FIG. 5, description will be made by paying attention to a portion surrounded by a broken line ◯ in the piece 5 fixed to the stair support beam 2 formed at a predetermined stair angle. Further, for easy understanding, a part surrounded by a broken line ○ is enlarged and shown in the lower right part of the drawing.

  The rising portion 33 provided at the front end side of the step plate portion 3A of the lower stairs 3 is positioned so as to cover the raised portion 3B of the upper stairs 3. At the same time, downward projections 30 provided at both ends of the tip side of the step plate portion 3A of the lower stairs 3 and downward projections 31 provided at both ends of the lower end side of the raised portion 3B of the upper stairs 3 are provided. Is inserted through the lateral slit 6 of the stair support 2.

  FIG. 6 is an enlarged view of the piece portion 5.

  The piece 5 has two groove portions, and a protrusion 30 is inserted into one of the grooves, and a protrusion 31 is inserted into the other groove. That is, the protrusions 30 and 31 inserted into the grooves of the piece material 5 are inserted so that the respective surfaces are aligned with the two grooves of the piece material 5. Furthermore, the kick-up portion 3B of the upper stairs 3 is sandwiched between the rising portion 33 provided at the front end side of the tread plate portion 3A of the lower stairs 3 and the downward projecting portion 30 so as to be sandwiched. Thereby, the upper and lower stairs 3 can be integrated to increase the rigidity.

[Configuration example of piece material 5]
FIG. 7 is a schematic perspective view of an example of the piece 5. The piece 5 is configured by stacking three plate-shaped steel plates 50, 51, 52. Or you may shape | mold from one steel material. A first groove 53 is formed on the steel plate 50, and a second groove 54 is formed on the upper end side of the steel plate 52. Moreover, since the height of the central steel plate 51 is lower than the height of the other steel plates 50 and 52, the space groove 55 is also formed in the central portion.

  The protrusion 30 of the step plate 3A of the lower stairs 3 is inserted into the first groove 53, and the protrusion of the raised portion 3B of the upper stairs 3 into the second groove 54 and the central space groove 55. 31 is inserted.

  Further, the piece 5 has a bolt through hole 56 that passes through the three steel plates 50, 51, 52. The piece 5 is fixed to the stair support beam 2 with screws and nuts passed through the bolt through holes 56. 8 to 10 are schematic views showing the piece 5 viewed from the directions of arrows A, B, and C in FIG. 7 so that the structure of the piece 5 can be more easily understood. The same parts have the same reference numerals.

  FIG. 11 shows the piece 5 attached to the staircase support beam 2A, with the projections 30 and 31 inserted (FIGS. 11 (1) and 11 (2)), respectively, in FIG. It is arrow D direction, Comprising: It is sectional drawing seen from the downward direction of the stairs.

  As shown in FIG. 11 (1), the protrusion 30 is inserted into a groove 53 formed in the steel plate 50. on the other hand. As shown in FIG. 11 (2), the projection 31 has a long and short two-stage projection, and the short projection is inserted into the groove 54 formed in the steel plate 52 of the piece 5 and is long. A protrusion is inserted into a space groove 55 formed in the upper part of the central steel plate 51 between the steel plates 50 and 52 on both sides. Thereby, it is possible to prevent the lateral displacement of the stairs.

[Height adjustment of stairs 3]
Here, in the present invention, as a method of adjusting the height of the stairs 3, it is possible to change the fixed height in fixing the stairs receiving girder 2 of the above-mentioned piece material 5.

  As a first method, for example, as shown in FIG. 12, the height of the piece 5 itself can be selected and adjusted by preparing an arbitrary height in a height range of 145 to 165 mm, for example. Is possible.

  In the second method, as shown in FIG. 13, the height of the piece 5 is set to the lowest dimension. Then, the height and angle are adjusted on the lower side of the piece 5 with a spacing member, shim, liner, or the like.

  For example, in FIG. 13, the height of the piece 5 is set to the lowest dimension, and a liner 57 is provided in the lower part. By changing the height of the liner 57, the overall height can be adjusted. At this time, it is possible to adjust the direction of the piece 5 by making the bolt through hole 56 of the piece 5 into a long hole and further inclining the liner 57. As a result, it is possible to change the direction of the piece 5 in accordance with the inclination angle of the stairs 3.

  Here, in the said 1st, 2nd method, it is necessary to prepare the piece material or liner corresponding to each height. The third method is a structure in which only one polygonal piece is prepared and an arbitrary height can be obtained.

  That is, FIG. 14 is a pentagon as a form of the piece 5 by this third method. Bolt through holes 56 are provided at different height positions corresponding to the sides 1 to 5 of the pentagon. The numbers surrounded by circles in the figure indicate the positions of the bolt through holes 56 used for the corresponding numbered sides.

  FIG. 15 shows an example of the use of the piece 5 by the third method, in which the “1” side in FIG. 14 is screwed to the staircase girder 2 so as to correspond to the horizontal slit 6 of the staircase girder 2. Is shown. In this case, the height of the stairs 3 is adjusted to 145 mm.

[Other configuration examples of stairs 3]
FIG. 16 is a diagram showing an example in which the staircase 5 is further formed by another structure. In FIG. 16, (1) is a configuration in which the footboard portion 3A and the kick-up portion 3B are connected and integrated by a hinge 3C. In this structure, it is a hinge bending type which can fold the footboard part 3A and the kick-up part 3B by the hinge C. In this configuration, the tread plate portion 3A and the kick-up portion 3B can be folded and transported, so that work efficiency can be improved.

  Another example is a split assembly type structure. That is, as shown in a cross section in (2) of FIG. 16, the footboard portion 3A and the raised portion 3B are separately formed. The tread plate portion 3A is further provided with a scissor plate portion 3D at the tip thereof. It is possible to insert the tip portion of the kick-up portion 3B between the tip portion of the stepping plate portion 3A and the scissor plate portion 3D and integrate them into the staircase 3 as shown in (3).

[Extension to the side method of stairs 3]
Further, FIG. 17 is a diagram for explaining the lateral expansion of the stairs 3.

It is possible to extend the stairs in the lateral direction by connecting the stairs receiving girders 2 back to back. That is, as shown in FIG. 17 (1), since the staircase support girder 2 has no protrusions on the outside, it can be connected back to back with the adjacent staircase girder 2 with bolts. .
FIG. 17 (2) shows a state in which the staircase width is doubled by connecting the left and right staircase support beams 2 at the center.

  As described above, the present invention makes it possible to reduce the size of the staircase structure member and to perform construction in a short time, and thus can be widely used, for example, for stairs laid on an event hall, a bleacher seat, a bench or the like.

1 Sasara girder 2 (2A, 2B) Stair girder 3 Stair 3A Tread plate part 3B Kick-up part 4 Horizontal girder 5 Frame material 6 Horizontal slit 30, 31 Protrusion part

Claims (11)

A staircase structure configured by arranging a plurality of stairs each having a tread board portion and a kick-up portion in a sasara girder,
Provided with downward projections on both end sides of the upper end side of the tread plate portion and both side ends of the lower end side of the raised portion,
A staircase girder placed on the sasara girder and having a transverse slit for each interval between the staircases;
The staircase support girder has a plurality of pieces arranged corresponding to the lateral slits and having grooves,
On the staircase support girder, downward protrusions on both ends of the upper end side of the tread plate portion of the staircase arranged on the lower step side, and the lower end side of the tread plate portion of the staircase arranged on the upper step side Downward protrusions on both end sides of the two are integrated by being inserted into the corresponding groove of the piece material through the stepped girder horizontal slit,
A staircase structure characterized by that. In claim 1,
The staircase girder is arranged on both sides of the staircase, and further forms a frame structure by a horizontal girder perpendicular to the direction of the staircase girder.
A staircase structure characterized by that. In claim 1,
A rising portion having a gap along the lower end side along the upper end side of the tread plate portion of the staircase is associated with the rising portion of the upper staircase so as to cover the rising portion of the lower staircase. Hiding the gap along the lower end side of the raised portion of the upper stairs,
A staircase structure characterized by that. In claim 1,
Each of the plurality of piece members is formed by overlapping three steel materials, the height of the central steel material is set lower than the steel materials on both sides, and the tread plate portion corresponding to each of the steel materials on both sides is formed. Grooves are formed to receive downward projections on both ends of the upper end side and downward projections on both side ends of the lower end side of the raised portion,
A staircase structure characterized by that. 5. The downward projection on both side ends of the lower end side of the kick-up portion has a long and short two-stage projection portion, and the short projection portion is inserted into the groove of the piece member, and the long projection portion Is inserted into a space formed in the upper portion of the central steel material between the steel materials on both sides to prevent lateral displacement of the staircase,
A staircase structure characterized by that. In claim 4,
The piece has a height corresponding to the height of the stairs.
A staircase structure characterized by that. In claim 4,
The piece has a predetermined height,
Having a liner disposed on the lower side of the piece,
The height of the liner is adjusted according to the height of the stairs,
A staircase structure characterized by that. In claim 6,
The piece material forms a regular polygon,
Bolt through holes that are fixed to the staircase support girder are formed at positions corresponding to the respective sides of the regular polygon and corresponding to the height of the staircase.
A staircase structure characterized by that. In claim 1,
The staircase width is expanded by connecting the staircase girder back to back,
A staircase structure characterized by that. In claim 1,
The step plate portion and the kick-up portion of the stairs are formed so as to be foldable with a hinge,
A staircase structure characterized by that. In claim 1,
There is a scissor plate portion at the rear end portion of the step plate portion of the staircase, the upper end portion of the kick-up portion can be sandwiched between the scissor plate portions, and the step plate portion and the kick-up portion of the staircase can be divided.
A staircase structure characterized by that.