JP3120053U - Prefab stairs - Google Patents

Abstract

Provided is a prefabricated staircase that can be firmly fixed and installed on an inclined surface even when the inclined surface to be installed is rocky.
A plurality of rod-shaped members 32 arranged parallel to each other so as to extend in an inclined direction on an inclined surface 34, a step plate portion 4 arranged horizontally, and a kick plate portion 6 arranged vertically are integrally formed. And a prefabricated staircase 30 comprising a step member 8 having a cross-section bent substantially at a right angle and arranged stepwise on the plurality of slanted bar-shaped members 32, wherein the plurality of bar-shaped members 32 are slanted. It was made to fix on the surface 34 with the anchor bolt 36.
[Effect] Even when the slope to be installed is rocky, the prefabricated staircase can be firmly fixed on the slope.
[Selection] Figure 1

Description

  The present invention relates to a prefabricated staircase.

  6 to 9 are views referred to for explaining a conventional prefabricated staircase 1 (see, for example, Patent Document 1). This prefabricated staircase 1 is used, for example, as a staircase that can be easily attached to a mountain road or a slope such as a construction site.

  For example, as shown in FIG. 6, the prefabricated staircase 1 includes a plurality of synthetic resin materials in which a foot plate 4 and a kick-up plate 6 are integrally formed on a frame body 3 arranged on an inclined surface 2 with unevenness. The step members 8 are arranged stepwise, and the side end portions of the step plates 4 on the inclined surface 2 side of each step member 8 are connected to the lower side end portions of the step-up plate 6 of the adjacent step member 8 on the upper side. Assembled.

  As shown in FIG. 7, the frame 3 includes two rod-shaped members 10 arranged in parallel to each other, and two connecting members 12 that connect and fix both ends of the two rod-shaped members 10. It is comprised by. As shown in FIG. 6, the frame 3 is placed on the inclined surface 2 so that the rod-like member 10 extends in the inclined direction.

  As shown in FIG. 8, the step member 8 is integrally formed with a mounting plate portion 14 having a height upward at a side end portion on the inclined surface 2 side of the step plate 4. A lower side end portion of the step-up plate 6 of another step member 8 disposed on the upper side is abutted against a step surface 4a (upper surface) of the step plate 4 of the step member 8, and an attachment plate portion of the step plate 4 14 is in contact with the surface opposite to the inclined surface 2. At this time, the nail member 16 is driven so as to penetrate the kick-up plate 6 and the mounting plate portion 14, and the step members 8 are fixed to each other.

  Further, before the step member 8 is arranged on the upper side of the step plate 4 of each step member 8, the nail member 18 is inclined from the step surface 4a side in the vicinity of the mounting plate portion 14 of the step plate 4. It is driven toward 2.

  The nail member 18 pierces the bar-like member 10 of the frame 3 below the tread plate 4, so that the tread plate 4 of the step member 8 is fixed to the frame body 3. The head of the nail member 18 is hidden under the kick-up plate 6 of another step member 8 disposed on the upper side of the tread plate 4 so that it cannot be seen from the outside.

Further, as shown in FIGS. 6 and 9, on both sides of the frame body 3, a plurality of anchor piles 20 are hit against the inclined surface 2 at intervals in the length direction of the rod-like member 10 of the frame body 3. It is included. Each anchor pile 20 has a length portion on the head side protruding on the inclined surface 2, and a nail 22 is directed horizontally toward the bar-shaped member 10 side of the frame 3 on the head of the anchor pile 20. As a result, the head of each anchor pile 20 and the rod-like member 10 of the frame 3 are fixed to each other. As a result, the prefabricated staircase 1 can be firmly fixed on the inclined surface 2 even when the inclined surface 2 is uneven.
Utility Model Registration No. 3066483

  However, in the prefabricated staircase 1 according to Patent Document 1, the anchor pile 20 is driven into the soil of the inclined surface 2 so that it can be firmly fixed to the inclined surface 2. If the inclined surface 2 on which the stairs 1 are to be installed is rocky, the inclined surface 2 is hard and the anchor pile 20 cannot be driven, so the step member 8 is fixed on the inclined surface 2. There was a problem that could not.

  Therefore, in view of the above problems, the present invention provides a prefabricated staircase that can be firmly fixed on an inclined surface even when the inclined surface to be installed is rocky. Is an issue.

In order to solve the above problems, the present invention
A plurality of rod-shaped members arranged in parallel to each other so as to extend in an inclined direction on the inclined surface;
Step members arranged side by side on a plurality of the inclined bar-like members, in which a step board portion arranged horizontally and a kick-up plate portion arranged vertically are integrally formed and the cross section bends at a substantially right angle. A prefabricated staircase with
The plurality of rod-shaped members are fixed on the inclined surface with anchor bolts.

  The prefabricated staircase according to the present invention is characterized in that the anchor bolt is provided with a support member that abuts the surface of the rod-shaped member facing the inclined surface and supports the rod-shaped member.

  In addition, the anchor bolt in the prefabricated staircase according to the present invention is inserted into a hole formed in the soil of the inclined surface so as to open to the surface, and the concrete material or synthetic resin solidified by filling in the hole It is characterized by being fixed in the hole through a material.

  According to the prefabricated staircase of the present invention, the prefabricated staircase can be firmly fixed on the inclined surface even when the inclined surface to be installed is rocky.

  Hereinafter, embodiments of a prefabricated staircase according to the present invention will be specifically described with reference to the drawings.

  FIGS. 1 to 3 are views referred to for explaining the prefabricated staircase 30 according to the first embodiment of the present invention. In the prefabricated staircase 30 shown in these drawings, the same parts as those of the conventional prefabricated staircase 1 are denoted by the same reference numerals, and redundant description of the same configuration as the conventional one is omitted.

  In the prefabricated staircase 30 according to the present embodiment, instead of the frame 3 (see FIG. 7) in the conventional prefabricated staircase 1, as shown in FIGS. Are provided with two rod-shaped members 32 having a substantially rectangular shape. The two rod-shaped members 32 are arranged parallel to each other so as to extend in the inclination direction on a rocky inclined surface 34 having irregularities. The step member 8 is fixed on the rod-like member 32 by the tip portion of the nail member 18 driven from the tread surface 4 a side of the tread plate 4 being pierced into the rod-like member 32.

  Each rod-like member 32 is fixed on the inclined surface 34 by a plurality of anchor bolts 36. As shown in FIG. 3, the rod-like member 32 is formed with a through hole 32 a penetrating in a direction perpendicular to the length direction, and the upper end portion 36 a of the anchor bolt 36 is inserted therethrough. Further, a flat plate-like support member 38 provided on the upper end portion 36 a of the anchor bolt 36 is in contact with the surface of the rod-shaped member 32 that faces the inclined surface 34.

  Although not shown, the support member 38 has a substantially rectangular planar shape, and the upper end portion 36a of the anchor bolt 36 is inserted through an insertion hole 38a formed at the center position. The anchor bolt 36 has a male screw formed on the outer peripheral surface over its entire length, and the upper end portion 36a inserted through the through hole 32a of the rod-like member 32 and the insertion hole 38a of the support member 38 has this rod-like shape. Two nuts 40 are tightened at a position sandwiching the member 32 and the support member 38 therebetween. Thereby, the rod-shaped member 32 and the anchor bolt 36 are fixed to each other.

  Moreover, in the bedrock of the inclined surface 34, the hole 42 is previously opened by the rock drill and opened to the surface. The anchor bolt 36 is fixed in the hole 42 by a concrete material 44 filled and solidified in the hole 42 in a state where the length portion on the lower end 36b side is inserted into the hole 42. .

  According to the prefabricated staircase 30 according to this embodiment, even when the inclined surface 34 on which the prefabricated staircase 30 is to be installed is rocky and has irregularities, it is firmly fixed on the inclined surface 34. Can be installed.

  Further, a support member 38 abuts on the surface of the rod-shaped member 32 that faces the inclined surface 34 so as to receive the load of the prefabricated staircase 30 or a person passing thereabove. The area receiving the load transmitted from the rod-shaped member 32 side becomes larger than when the nut 40 on the side is in direct contact with the rod-shaped member 32 and receives the load. For this reason, since local abrasion of the rod-shaped member 32 can be reduced and rattling due to abrasion can be prevented, the durability of the prefabricated staircase 30 can be improved.

  Next, FIG.4 and FIG.5 is a figure referred in order to demonstrate the prefabricated staircase 50 which concerns on the 2nd Embodiment of this invention. The same parts as those in the first embodiment will be described using the same reference numerals, and overlapping descriptions of the same configurations will be omitted.

  The prefabricated staircase 50 according to the present embodiment includes a support member 52 as shown in FIGS. 4 and 5 instead of the support member 38 of the prefabricated staircase 30 according to the first embodiment. As shown in FIG. 5, the support member 52 includes a flat bottom plate 52 a and a pair of guide plates 52 c erected vertically at both ends thereof.

  Thereby, the rod-shaped member 32 is arranged between the two guide plates 52c and is supported by the bottom plate 52a. The bottom plate 52a is formed with an insertion hole 52b through which the upper end portion 36a of the anchor bolt 36 is inserted at a substantially central position of the planar shape.

  According to the prefabricated staircase 50 according to the second embodiment of the present invention, the inclined surface 34 to be installed is rocky and has irregularities, as in the first embodiment. Even in this case, the prefabricated staircase 50 can be firmly fixed and installed on the inclined surface 34.

  In addition, according to the prefabricated staircase 50 according to the present embodiment, the support member 52 that supports the rod-shaped member 32 is provided with a pair of guide plates 52c that are erected vertically at both ends of the bottom plate 52a. The rod-shaped member 32 can be supported stably and reliably.

  In the prefabricated steps 30 and 50 according to the first and second embodiments, the anchor bolt 36 has a male screw formed on the outer peripheral surface over the entire length, but the two nuts 40 are tightened. For this purpose, a male screw may be formed only on the upper end portion 36a.

  In the prefabricated staircases 30 and 50 according to the first and second embodiments, the two rod-shaped members 32 are provided, but three or more rod-shaped members 32 may be provided.

  In the prefabricated steps 30 and 50 according to the first and second embodiments, the concrete material 44 is provided in the hole 42 in order to fix the anchor bolt 36 in the hole 42 of the inclined surface 34. Although filled, the gap between the inner wall of the hole 42 and the outer periphery of the anchor bolt 36 may be narrowed or closely adhered so that the concrete material 44 is not filled.

  In the prefabricated steps 30 and 50 according to the first and second embodiments, the concrete material 44 is provided in the hole 42 in order to fix the anchor bolt 36 in the hole 42 of the inclined surface 34. However, instead of the concrete material 44, it may be filled with a synthetic resin material that initially has fluidity and solidifies after a certain time.

  In the prefabricated stairs 30 and 50 according to the first and second embodiments, the slopes 34 are not necessarily rocky, although they are installed on the rocky slopes 34.

  In the prefabricated stairs 30 and 50 according to the first and second embodiments, the inclined surface 34 is not necessarily provided with unevenness, although the inclined surface 34 is provided with unevenness.

It is a side view which shows the prefabricated staircase 30 which concerns on the 1st Embodiment of this invention. It is a top view which shows the prefabricated staircase 30 which concerns on the 1st Embodiment of this invention. It is a partial expanded side view of the prefabricated staircase 30 shown in FIG. It is a side view which shows the prefabricated staircase 50 which concerns on the 2nd Embodiment of this invention. It is AA arrow sectional drawing of the prefabricated staircase 50 in FIG. It is a side view which shows the conventional prefabricated staircase 1. FIG. It is a top view which shows the frame 3 in FIG. It is a partial expanded side view of the prefabricated staircase 1 shown in FIG. It is a top view which shows the conventional prefabricated staircase 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Prefabricated staircase 2 Inclined surface 3 Frame body 4 Treading plate 4a Treading surface 6 Kick-up plate 8 Step member 10 Bar-shaped member 12 Connecting member 14 Mounting plate part 16, 18 Nail member 20 Anchor pile 30 Prefabricated staircase 32 Bar-shaped member 32a Through-hole 34 Inclined surface 36 Anchor bolt 36a Upper end part 36b Lower end part 38 Support member 38a Insertion hole 40 Nut 42 Hole part 44 Concrete material 50 Prefabricated staircase 52 Support member 52a Bottom plate 52b Insertion hole 52c Guide plate

Claims (3)

A plurality of rod-shaped members arranged in parallel to each other so as to extend in an inclined direction on the inclined surface;
Step members arranged side by side on a plurality of the inclined bar-like members, in which a step board portion arranged horizontally and a kick-up plate portion arranged vertically are integrally formed and the cross section bends at a substantially right angle. A prefabricated staircase with
The prefabricated staircase, wherein the plurality of rod-shaped members are fixed on the inclined surface with anchor bolts.   2. The prefabricated staircase according to claim 1, wherein the anchor bolt is provided with a support member that contacts the surface of the rod-shaped member that faces the inclined surface and supports the rod-shaped member. The anchor bolt is inserted into a hole formed in the sloped surface so as to open to the surface, and is fixed in the hole via a concrete material or a synthetic resin material filled and solidified in the hole. The prefabricated staircase according to claim 1 or 2, characterized in that.

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