JP2004060391A - Temporary stair landing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temporary stair landing capable of being simply installed at the middle of a temporary stair installed on a slope such as a working site, a mountain or the like. <P>SOLUTION: The temporary stair landing 1 connects a pair of parallel and inclined struts 2 fixing locking metal fittings 6 to both ends with a horizontal member 7, and one end of a floor board 3 as a stair landing is pivoted on the upper end thereof in a rotatable manner. The floor board 3, a horizontal link material 9 and vertical link materials 10a and 10b are link-coupled to constitute a parallelogram link 4, and at the same time, a fixed means 5 fixing the parallelogram link 4 at an optional angle is included. When the temporary stair landing 1 is installed, it is locked with a steel pipe P properly set on a slope, and after the floor board 3 has been adjusted to the horizontal, the parallelogram link 4 is fixed by the fixed means 5 to surely support the floor board 3. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a landing for temporary stairs installed between temporary stairs when a plurality of temporary stairs used for elevating and lowering temporary scaffolds and slopes are installed.
[0002]
[Prior art]
Conventionally, temporary stairs have been set up to allow workers to move up and down steps such as the upper and lower floors of temporary scaffolds assembled at construction sites and slopes when cutting mountains, etc. In the case where the stairs are assembled on a step, or where the step on the slope is large and one temporary staircase is not enough, a plurality of temporary staircases may be installed continuously. At this time, especially on the slope, the temporary stairs are inevitably connected in a straight line along the slope of the slope, and as a result, a long stair parallel to the slope of the slope is formed. It becomes.
[0003]
[Problems to be solved by the invention]
However, as described above, when the stairs have a long structure parallel to the slope direction of the slope and in a straight line, it is expected that the worker will feel a little fear when descending. In the worst case, if a worker slides down a foot and falls down the stairs, the worker may continue to fall without stopping the dozens of stairs at once. There was room for
[0004]
In view of the above, an object of the present invention is to provide a temporary staircase landing that can be easily installed in the middle of a temporary staircase installed on a slope such as a construction site or a mountain.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a landing for temporary stairs according to claim 1, wherein a pair of parallel inclined supports having fixing metal fittings fixed at both ends are connected by a horizontal member. One end of a floor for a landing is rotatably mounted on the upper end of the inclined support, and one end of a horizontal link member is rotatably mounted on the lower side of the floor support of the inclined support. The parallel link is formed by linking the floor plate and the horizontal link material with two vertical link materials that are parallel to the inclined strut and are spaced apart from each other with the horizontal link material parallel to the floor plate. On the other hand, a fixing means for fixing the parallelogram link in a state where the parallelogram link is tilted at an arbitrary angle with respect to the inclined support is provided.
[0006]
Further, in the landing for temporary stairs according to claim 2, the fixing means pivotally attaches one end of the fixing material to a joint between the vertical link material and the horizontal link material closer to the inclined support. On the other hand, a long hole for adjusting the angle is formed in the inclined support along the longitudinal direction, and the other end of the fixing member is fastened and fixed by a fastening bolt inserted into the long hole. It is characterized by:
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
According to the landing for temporary stairs according to claim 1 of the present invention, for example, when a plurality of temporary stairs are continuously installed on a slope or the like, each temporary stair or a plurality of temporary stairs are connected in series. Then, the landing for temporary stairs of the present invention is arranged on the side of the temporary staircase at the top, and is locked by a metal fitting to a steel pipe or the like separately installed on a slope. Next, the floor for the landing is rotated by hand and adjusted to be horizontal. At this time, along with this operation, the parallelogram link supporting the floorboard also rises. Then, the floor plate is securely supported in a horizontal state by fixing the parallelogram link inclined at an arbitrary angle with respect to the inclined support by the fixing means.
[0008]
In this way, the landing for the temporary staircase can be easily installed simply by locking it to the steel pipe that is appropriately arranged, and the floor can be rotated and adjusted horizontally, so that the landing can be installed regardless of the slope of the slope. Can be built. Furthermore, by setting a landing on the temporary stairs as appropriate, the fear of the worker is weakened unlike a long temporary staircase on a straight line, and even if the worker slides his feet and falls down the stairs, Stops at a landing in the city to prevent serious accidents, which is very beneficial in terms of work safety.
[0009]
According to the landing for the temporary stairs, the parallelogram link can be fixed and released immediately by the tightening and loosening operation of the fastening bolt inserted into the long hole, and the floor plate can be easily and quickly mounted. Can be adjusted to any angle.
[0010]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0011]
Reference numeral 1 in FIG. 1 denotes a landing for temporary stairs according to the present invention, which includes an inclined column 2, a floor 3 serving as a landing part of a stairway where a worker or the like actually passes, and a parallel support for supporting the floor 3. A quadrilateral link 4 and fixing means 5 for fixing the parallelogram link 4 in a state of being inclined at an arbitrary angle are mainly constituted.
[0012]
The inclined column 2 is made of an aluminum material having a substantially U-shaped cross section, and has locking metal members 6 fixed to both ends thereof. The inclined columns 2 are arranged in parallel at a predetermined interval, and are connected by a plurality of horizontal members 7. The floor plate 3 is a rectangular aluminum plate material, and has one end rotatably mounted on the upper end of the inclined support 2. When the floor plate 3 is rotated and folded, as shown in FIG. 3, the floor plate 3 can be brought into close contact with the inclined column 2 and integrated therewith, which is convenient for transportation and storage.
[0013]
A detachable handrail frame 8 is provided upright on one end of the floor plate 3 opposite to the side on which the inclined column 2 is mounted, so that workers passing by when setting up the landing area can be kept safe. It is designed to be removable and not bulky.
[0014]
The parallelogram link 4 includes a floor plate 3, a horizontal link member 9, and two vertical link members 10a and 10b for linking the floor plate 3 and the horizontal link member 9. The horizontal link member 9 has one end rotatably mounted on the inclined support column 2 below the shaft mounting portion of the floor plate 3 so as to be rotatable, and is arranged so as to be parallel to the floor plate 3. The vertical link members 10a and 10b are arranged so as to be parallel to the inclined support 2 and at a predetermined interval, and the vertical link member 10a connects the tip of the horizontal link member 9 and the bottom of the floor plate 3. The vertical link member 10b links the middle portion of the horizontal link member 9 and the bottom of the floor panel 3 to each other.
[0015]
Then, the tilting angle of the parallelogram link 4 changes with the rotation of the floor plate 3, but if the parallelogram link 4 is fixed by the fixing means 5 in this state, the floor plate 3 becomes the parallelogram link 4. It has a structure that can support it.
[0016]
The fixing means 5 can fix the parallelogram link 4 in a state where the parallelogram link 4 is tilted at an arbitrary angle with respect to the inclined column 2. Various forms are conceivable, and as an example, In the embodiment, as shown in detail in FIG. 4 or FIG. 5, a long hole 11 for angle adjustment is formed in the side surface of the inclined support 2 along the longitudinal direction, and the same shape as the long hole 11 is formed. A bolt fixing plate 12 in which round through holes are drilled at predetermined intervals in the long hole is overlapped and fixed to the long hole 11, and a recess 15 in which the large diameter portion 14 of the fastening bolt 13 is fitted is formed along the long hole 11. Are formed.
[0017]
Further, one end of a fixing member 16 is rotatably mounted on the joint between the horizontal link member 9 and the vertical link member 10b constituting the parallelogram link 4, and the other end of the fixing member 16 is connected to the elongated hole. 11 is screwed into the fastening bolt 13 inserted into the bolt 11, and the tightening bolt 13 is tightened and loosened, and the recess 15 into which the large-diameter portion 14 of the fastening bolt 13 is fitted is appropriately changed to operate the four parallel sides. The tilting angle of the shape link 4 can be easily adjusted, and can be fixed at an arbitrary angle, whereby the angle of the floor plate 3 supported by the parallelogram link 4 can be adjusted.
[0018]
Thus, as shown in FIG. 6, when the temporary staircase landing 1 according to the present invention is installed between consecutive temporary stairs, first, the temporary staircase landing 1 is arranged in parallel to the side of the temporary staircase A. Then, the metal fittings 5 at both ends of the inclined column 2 are locked and fixed to a steel pipe P or the like separately arranged horizontally on the slope. Next, the fastening bolt 13 to which one end of the fixing member 16 is fixed is loosened, the large-diameter portion 14 of the bolt is separated from the recess 15, and the fastening bolt 13 is slidable along the elongated hole 11. Thereafter, the user takes the floor plate 3 by hand and rotates it so that it is horizontal.
[0019]
At this time, the tilting angle of the parallelogram link 4 changes in conjunction with the rotation of the floor plate 3, and the fixing member 16 also moves in conjunction with it, and the fastening bolt 13 with one end of the fixing member 16 screwed thereto. Also slides along the elongated hole 11. Then, when the floor plate 3 becomes horizontal, the large-diameter portion 14 of the fastening bolt 13 is fitted into an appropriate recess 15, and then the fastening bolt 13 is tightened to fix the fixing member 16. Thus, the parallelogram link 4 tilted at an arbitrary angle is fixed in that state, and the floor plate 3 supported by the parallelogram link 4 is reliably maintained in a horizontal state. Finally, the handrail frame 8 is erected around the floorboard 3 to complete the installation of the landing for the stairs. In this way, the temporary scaffold B is installed again above the temporary staircase landing 1.
[0020]
As described above, when a plurality of temporary stairs are continuously provided on a slope or the like to form a long stair, the temporary stair landings 1 of the present invention are interposed at appropriate intervals in the middle to form a straight line. Can be prevented from becoming a long staircase, and a horizontal landing can be reliably provided irrespective of the degree of the slope such as a slope, and it becomes possible to make the stairs very suitable in terms of work safety. .
[0021]
Further, the temporary staircase landing 1 can suitably cope with a case where the temporary stairs cannot be installed linearly due to the state of the slope or the presence of obstacles, for example, when the obstacles are particularly large. A plurality of landings 1 for temporary stairs can be arranged side by side in accordance with the size of the obstacle, and temporary stairs A and B at the upper and lower positions can be appropriately arranged as shown in FIG. .
[0022]
【The invention's effect】
As described above, according to the landing for temporary stairs according to claim 1 of the present invention, a pair of parallel inclined struts having locking metal fittings fixed to both ends are connected by a horizontal member, and the upper end of the inclined strut is provided. In addition to one end of a floor plate for a landing being rotatably mounted on the floor, one end of a horizontal link material is rotatably mounted on a lower side of the floor plate mounting portion of the inclined support, and the horizontal link material is attached to the floor plate. The floor plate and the horizontal link member are respectively connected to each other by two vertical link members parallel to the inclined support and arranged at a predetermined interval after being parallel to each other to form a parallelogram link. Since the fixing means is provided for fixing the quadrilateral link at an arbitrary angle with respect to the inclined support, the landing for the temporary staircase can be easily installed simply by engaging with the appropriately arranged steel pipe. In addition, since the floorboard can be rotated and adjusted horizontally, it can be installed regardless of the degree of the slope of the slope, and a long staircase can form a landing on the way and can safely go up and down.
[0023]
Further, according to the landing for temporary stairs according to the second aspect, the fixing means pivotally attaches one end of the fixing material to the joint between the vertical link material and the horizontal link material closer to the inclined support. On the other hand, a long hole for adjusting the angle is formed in the inclined support along the longitudinal direction, and the other end of the fixing member is configured to be fastened and fixed by a fastening bolt inserted into the long hole. The floor plate can be supported in a horizontal state very easily by the tightening and loosening operation of the fastening bolt inserted into the elongated hole.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a temporary stair landing according to the present invention.
FIG. 2 is a side view of FIG.
FIG. 3 is a view showing a state where a landing for a temporary staircase is folded;
FIG. 4 is an enlarged view of a main part of FIG. 1;
5 is a view as viewed in the direction of the arrow X in FIG. 4;
FIG. 6 is an explanatory view showing an installation example of a temporary stair landing according to the present invention.
FIG. 7 is an explanatory diagram showing another installation example of FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Landing area for temporary staircase 2 ... Inclined support 3 ... Floor plate 4 ... Parallelogram link 5 ... Fixing means 6 ... Locking metal 7 ... Horizontal member 9 ... Horizontal link member 10a, 10b ... Vertical link member 11 ... Slot 13 ... fastening bolts 16 ... fixing material

Claims (2)

A pair of parallel inclined struts having locking metal fittings fixed at both ends are connected by a horizontal member, and one end of a landing floor plate is rotatably mounted on the upper end of the inclined strut, and a floor plate of the inclined strut is provided. One end of the horizontal link material is rotatably mounted on the lower side of the shaft attachment portion, and the horizontal link material is parallel to the floor plate, and furthermore, two parallel link members are arranged parallel to the inclined support and at a predetermined interval. The floor plate and the horizontal link material are respectively linked to each other with the vertical link material to form a parallelogram link, and the parallelogram link is fixed at an arbitrary angle with respect to the inclined support while being fixed. A landing for temporary stairs, characterized by having means. The fixing means pivotally attaches one end of the fixing member to a joint between the vertical link member and the horizontal link member closer to the inclined support, while the tilt support has an angle adjustment along the longitudinal direction. The landing for temporary stairs according to claim 1, wherein a long hole is formed, and the other end of the fixing member is fastened and fixed by a fastening bolt inserted into the long hole.

Images