JP2008208665A - Temporary stepped stairway - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temporary stepped stairway easily installable by changing the gradient according to a working space at the installation position. <P>SOLUTION: This temporary stepped stairway 10 is so formed that multiple stages of step plates 15 are supported, at both ends, on a pair of step receiving support members 14 arranged on both sides, and lifts between an upper story portion 12 and a lower story portion 11 during the construction of a building. The step receiving support members 14 are slidable in the axial direction X. The step plates 15 are so formed that at least a part of the upper part or the lower part can be removed from the step receiving support members 14. Each of the pair of step receiving support members 14 comprises an upper step receiving member 14a and a lower step receiving member 14b arranged parallel to each other. Both ends of each step plate 15 are rotatably pinned to the upper step receiving member 14a and the lower step receiving member 14b at the portions apart an equal distance from each lower end 16 thereof, and supported on the receiving members in the state of being arranged parallel to each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a temporary step staircase, and in particular, a plurality of step plates are attached to both ends supported by a pair of step support members arranged on both sides, and an upper floor portion and a lower floor portion are installed during construction of a building. The present invention relates to a temporary step staircase used for moving up and down.

For example, a ladder is generally used as a means for a worker to move up and down between an upper floor portion and a lower floor portion during construction of a building such as a wooden house building. In addition, the ladder can be easily installed and used, but because it lacks stability during elevation, a temporary staircase using a step board (step board) wider than the ladder has been developed (for example, Patent Document 1).
Japanese Utility Model Publication No. 6-62092

  However, the temporary staircase is firmly formed by supporting a plurality of step plates in a staircase pattern on a pair of step support members arranged on both sides, and it can be easily installed or attached like a ladder. It is difficult to install by changing the gradient according to the working space of the place.

  The present invention has been made paying attention to such a conventional problem, and an object of the present invention is to provide a temporary step staircase that can be easily installed by changing the gradient according to the work space or the like of the mounting location. And

  In the present invention, a plurality of step plates are supported by a pair of step support members arranged on both sides, and step plates are attached to the upper and lower floor portions during the construction of the building. Temporary step staircase to be used, wherein the step support is extendable and slidable in the axial direction, and at least a part of the upper or lower part of the step plate is removable from the step support. The purpose is to provide a temporary step staircase.

  Further, in the temporary step staircase of the present invention, the pair of step support members each include an upper step member and a lower step member arranged in parallel, and both side ends of each step plate are the upper step members. It is preferable that the step receiving member and the lower step receiving member are rotatably pin-bonded to portions equidistant from the lower ends of the step receiving member and supported in a state of being arranged in parallel.

  According to the temporary step staircase of the present invention, it can be easily installed by changing the gradient according to the work space or the like of the attachment location.

  As shown in FIGS. 1A and 1B and FIGS. 2A and 2B, a temporary step staircase 10 according to a preferred embodiment of the present invention is under construction of a wooden residential building as a building, for example. In addition, when moving up and down between the first floor soil 11 and the second floor 12 using the temporary step staircase 10, by changing the gradient of the temporary step staircase 10 as necessary, for example, The space 13 for the worker to enter the temporary step staircase 10 through the flow line D through the side portion of the temporary step staircase 10 or to exit from the temporary step staircase 10 to the earth 11 (FIG. 2 (a), (See (b)). That is, in this embodiment, in a state before the wall member 20 is attached to the front side portion of the temporary step staircase 10, it is possible to enter the temporary step staircase 10 from the front side of the temporary step staircase 10 via a scaffolding plate or the like. However, after attaching the wall member 22, it is impossible to enter the temporary step staircase 10 from the front side, so the temporary step staircase 10 is changed in slope. By re-installing and securing the space 13 between the temporary step staircase 10 and the wall member 22, it can be moved up and down between the soil 11 on the first floor and the floor 12 on the second floor via the temporary step staircase 10. To.

  The temporary step staircase 10 according to the present embodiment has a plurality of step plates 15 supported on both ends by a pair of step support members 14 arranged on both sides, and an upper floor portion (2 Temporary staircase used to move up and down between the floor 12) of the floor and the lower floor portion (the first floor soil 11), and the step support 14 can be extended and contracted in the axial direction X at the upper portion thereof, for example. In addition, at least a part of the upper portion of the step plate 15 can be detached from the step support member 14.

  In the present embodiment, the pair of step support members 14 are each composed of an upper step member 14a and a lower step member 14b arranged in parallel, and both side ends of each step plate 15 are shown in FIG. As shown in FIG. 4, the upper joint member 14a and the lower joint member 14b are joined to a portion equidistant from each lower end 16 by a rotatable pin joint 20 and arranged in parallel at an equal pitch. It is supported.

  In the present embodiment, as shown in FIGS. 1B and 2B, the upper step receiving member 14a and the lower step receiving member 14b constituting each step support member 14 are each made of, for example, a metal pipe. An upper pipe member having a small diameter is inserted into the lower pipe member having a large diameter so as to be slidably overlapped with the lower pipe member having a large diameter, and has a structure capable of sliding in the axial direction X. Further, a fixed hardware 17 is connected to the upper end portion of the lower step receiving member 14b so as to be rotatably pin-bonded to the upper end portion and bendable into a square shape with respect to the lower step receiving member 14b. The upper end portion of the lower step receiving member 14b can be fixed to the floor 12 on the second floor, for example, by a fixing bolt 18 or the like via the fixed hardware 17. Furthermore, the lower end portions of the upper step receiving member 14a and the lower step receiving member 14b are rotatably pin-bonded to the lower end portions, and a grounding metal piece 19 is attached thereto. The lower end portion 16 of each step support material 14a, 14b can be supported from the soil 11 in a stable state.

  As the step plate 15, for example, various known stepping plates made of metal or synthetic resin can be used. As shown in FIG. 3, each step plate 15 has a leading end side of its side end surface on the upper step receiving member 14 a of the step supporting member 14, and a rear end side on the lower step receiving member 14 a of the step supporting member 14. In addition, by using various known pin members and joining at the pin joint portion 20, the upper step receiving member 14a and the lower step receiving member 14b are rotatably attached. As a result, the step plates 15 are arranged in parallel in the vertical direction with an interval of about 18 to 24 cm, and even when the gradient of the step supporting material 14 with respect to the soil 11 is changed, the interval between them is changed. While maintaining a slight change, the state of being arranged in parallel is maintained. Further, in the present embodiment, at least two to three steps of the step plate 15 arranged at the upper portion are provided in, for example, notches for attachment / detachment in pin holes provided on the inner surface of the upper step receiving member 14a and the lower step receiving member 14b. It is detachably attached to the step support 14 by various known means such as providing the

  In addition, according to this embodiment, the handrail 21 is attached along the both sides of the temporary step staircase 10 by, for example, fixing the post 21a to the upper step receiving member 14a of the step support member 14 by welding.

  Then, according to the temporary step staircase 10 of the present embodiment having the above-described configuration, the step support member 14 has a structure that can be expanded and contracted in the axial direction X at the upper portion thereof, and is disposed at least at the upper portion. 2 to 3 steps can be removed from the step support member 14, so that, for example, from the gentle gradient shown in FIGS. 1 (a) and 1 (b), FIGS. 2 (a) and 2 (b) When the temporary step staircase 10 is re-installed so as to have a steep slope with the space 13 between the temporary step staircase 10 and the wall member 22 shown in FIG. Further, while rotating the pin joint portion 20 with the lower step receiving member 14b, the grounding metal fitting of the lower end portion 16 of the step supporting member 14 is protruded upward from the floor 12 on the second floor while rotating the temporary step staircase 10. 19 In addition to being installed so as to be separated from the member 22, the stepped portion 15 of the protruding portion is removed from the portion protruding upward from the second floor 12 at the upper end, the step support 15 is expanded and contracted, and again By fixing the fixed hardware 17 to the floor 12 on the second floor, it is possible to easily re-install the temporary step staircase 10 with a steep slope.

  Therefore, according to the temporary step staircase 10 of the present embodiment, it can be easily installed by changing the gradient according to the work space of the attachment location.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the temporary step stairs can be easily re-installed from a steep slope to a gentle slope while adding a step plate to the upper part of the extended step support material and attaching it in the reverse procedure. Further, the step support member does not necessarily need to be composed of an upper step member and a lower step member arranged in parallel. Further, the step support may be slidable in the axial direction at the lower portion other than the upper portion, for example, and the step plate may be removable at least partially from the step support member. .

BRIEF DESCRIPTION OF THE DRAWINGS (a) is a top view explaining the state which installed the temporary step staircase which concerns on preferable one Embodiment of this invention with the gentle gradient, (b) is a side view. BRIEF DESCRIPTION OF THE DRAWINGS (a) is a top view explaining the state which installed the temporary step staircase which concerns on preferable one Embodiment of this invention with a steep slope, (b) is a side view. It is a partial side view explaining the attachment condition of the step board to a stage support material.

Explanation of symbols

10 Temporary step staircase 11 Ground floor on the first floor (lower floor part)
12 2nd floor (upper floor)
13 Space for securing worker's flow line 14 Step support member 14a Upper step member 14b Lower step member 15 Step plate 16 Lower end portion of step support member 17 Fixture 18 Fixing bolt 19 Grounding fixture 20 Pin Joint 21 Handrail 22 Wall member D Flow line X of worker Axial direction of step support material

Claims (2)

Temporary step staircase used to move up and down between the upper floor part and the lower floor part during the construction of the building, with a plurality of step plates mounted on both sides by a pair of step supporters arranged on both sides. Because
A temporary step staircase in which the step support member is slidable in an axial direction, and at least a part of the upper or lower portion of the step plate is removable from the step support member.   Each of the pair of step support members includes an upper step member and a lower step member that are arranged in parallel, and both end portions of each step plate have the upper step member and the lower step member. The temporary step stairway according to claim 1, wherein the temporary step staircase is supported in a state where it is rotatably joined to a portion equidistant from each of the lower ends thereof and arranged in parallel.

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