JP3083355U - Stainless steel fixed ladder - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a stainless steel fixed ladder that is excellent in workability when attached to a side surface of a structure and has high strength and high safety. SOLUTION: A plurality of stainless steel steps are spanned at a fixed interval between a pair of substantially cylindrical supports made of stainless steel, and the stainless steel fixed type is attached to the wall surface of the structure via a bracket via stainless steel. In the ladder, there is provided a stainless-steel fixed ladder, wherein a bracket is slidably attached to the both columns in a vertical direction and a non-slip member is formed on the stainless-steel step.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a stainless steel fixed ladder, which has excellent workability, especially when attached to the side of structures such as houses, schools, factories, buildings, chimneys, and water tanks, and has high strength and high safety. It relates to a stainless steel fixed ladder.

[0002]

[Prior art]

 Conventionally, ladders have been installed on the sides of structures such as houses, schools, factories, buildings, chimneys, water tanks, etc. for people to enter and exit. Many of these fixed ladders are made of extruded aluminum or stainless steel, which is lightweight and has good workability.

For example, a fixed ladder 20 made of stainless steel as shown in FIGS. 11A and 11B is used. The ladder 20 can be attached to a wall surface by attaching fittings 21 welded to left and right side frames 23, 23 arranged in parallel.

However, in the above ladder, since the position of the mounting bracket cannot be freely changed, the ladder cannot be installed unless the position of the mounting bracket is checked in advance according to the structure to be mounted. Was. In addition, it was difficult to fine-tune the position of the mounting bracket on site due to measuring errors and mounting errors at the site, which required time and labor and caused problems in workability. In addition, the conventional aluminum ladder has a problem that its corrosion resistance is inferior to that of stainless steel. Further, stainless steel has a drawback that its workability is inferior to that of aluminum.

[0005]

[Problems to be solved by the invention]

 Under such circumstances, the present invention aims to solve the conventional problems and achieve the following objects. In other words, the present invention has excellent workability when attached to the side of a structure, has high strength and high safety, and is particularly suitable for the side of structures such as houses, schools, factories, buildings, chimneys, and water tanks. It is an object of the present invention to provide a fixed ladder made of stainless steel that can be installed in a ladder.

[0006]

[Means for Solving the Problems]

 The present invention provides the following stainless steel fixed ladder to achieve the above object.

In the invention of claim 1, a plurality of stainless steel steps are bridged at regular intervals between a pair of substantially cylindrical supports made of stainless steel, and attached to the wall surface of the structure via a stainless steel bracket. A fixed ladder made of stainless steel, characterized in that a bracket is attached to each of the columns so as to be slidable in a vertical direction.

[0008] The invention of claim 2 is that a plurality of stainless steel stairs are bridged at regular intervals between a pair of stainless steel substantially cylindrical supports, and is attached to the wall surface of the structure via a stainless steel bracket. A fixed ladder made of stainless steel, wherein a non-slip member is coated on the stainless steel step.

[0009] The invention of claim 3 is that a plurality of stainless steel steps are bridged at regular intervals between a pair of substantially cylindrical pillars made of stainless steel, and attached to the wall surface of the structure via a stainless steel bracket. A stainless steel fixed ladder, wherein a bracket is slidably mounted in the up and down direction on both of the columns and a non-slip member is formed on the stainless steel step. is there.

[0010] The invention according to claim 4 is the stainless steel fixed ladder according to claim 2 or 3, wherein the anti-slip member is a heat-shrinkable rubber tube covering the entire step rail.

The invention according to claim 5 is the stainless steel fixed ladder according to any one of claims 1 to 4, wherein a ring-shaped fall prevention safety guard is attached via a pair of columns.

A sixth aspect of the present invention is a stainless steel fixed ladder according to any one of the first to fifth aspects, wherein an elevating / lowering door and an auxiliary ramp are attached to a lower portion of the ladder.

According to the first aspect of the present invention, since the bracket is attached to both the columns so as to be slidable in the vertical direction, the blanket can be freely moved, and in the case of a concrete wall, the reinforcing bar embedded therein. Can be removed, and in the case of a wooden building, it can be arranged in accordance with the position of the reinforcing member, greatly improving workability. In addition, since the strut, step, and bracket are all made of high-strength stainless steel with excellent corrosion resistance, they have sufficient strength and durability even when formed into a small-diameter hollow member.

According to the invention of claim 2, the anti-slip effect can be exhibited by forming the anti-slip member on the stainless steel step. In this case, it is preferable that the non-slip member is a heat-shrinkable rubber tube that covers the entire crosspiece from the viewpoint of adhesion and workability.

[0015] According to the invention of claim 3, the bracket is slidably attached to both columns in the vertical direction, and the stainless steel step is covered with the non-slip member, so that the anti-slip effect and construction can be achieved. Thus, the convenience is further improved.

According to the invention of claim 5, the safety of the worker can be sufficiently secured by mounting the circular ring-shaped fall prevention safety guard between the pair of columns.

According to the invention of claim 6, it is possible to prohibit an outsider from entering by attaching the lifting prevention door and the auxiliary ramp to the lower part of the ladder.

[0018]

Embodiments and Examples of the Invention

 Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 is a perspective view of a fixed ladder 10 according to one embodiment of the present invention, and FIG. 2 is a perspective view of a fixed ladder 10 according to another embodiment.

The fixed ladder 10 of the present invention has a plurality of steps 2 spanned at regular intervals between a pair of substantially cylindrical supports 1, 1, and is attached to the wall of the structure via a bracket 3. A bracket 3 is attached to both the columns 1 and 1 so as to be slidable in the vertical direction. This makes it possible to remove the reinforcing bars embedded in the concrete wall and install the bracket 3 with good workability. In the case of a wooden building, the bracket 3 can be arranged in accordance with the position of the reinforcing member.

As shown in FIGS. 3 to 6, the pair of pillars 1 and 1 are formed in a cylindrical shape having a substantially circular cross section. As shown in FIG. It is drilled to the lower end. Further, the groove 12 provided in the column may be formed so as to be slidable between the steps 2 as shown in FIG.

In this case, the method of attaching the column 1 and the bracket 3 is not particularly limited as long as the bracket can be moved in the vertical direction. For example, the bolt head 13 is inserted into the groove 12 of the column, With the shaft portion 14 protruding from the column 1, the bolt 1 is passed through a bolt insertion hole formed at the mounting end of the bracket, and the bolt and the nut are screwed into the column 1. 3 can be mounted to be slidable up and down.

The stairs 2 are horizontally arranged between the two pillars 1 and 1 to form a ladder 10, and are not particularly limited. It is about 25 cm to 45 cm, and the interval between the two columns 1, 1 is usually about 35 to 45 cm. The step 2 is preferably formed in the shape of a hollow cylinder, but is not particularly limited, and may be a solid cylinder, a rod, or a flat plate.

The method for attaching both ends of the step 2 to both columns is not particularly limited, but a method in which a hole is formed in both columns 1 and 1 and a step is inserted and welded to the hole. A method of fastening by blind rivet and the like can be appropriately adopted.

Although not shown in the figure, the safety step can be improved by forming a non-slip member on the step 2 of the fixed ladder of the present invention. The non-slip member is not particularly limited as long as it has a non-slip effect. For example, rubber, various elastomers, plastic, cloth, and the like can be used. Among them, it is preferable to use a heat-shrinkable rubber tube, cover the entire surface of the step 2, and apply heat to the step 2 so that the step 2 is in close contact with the step. Also, a plurality of grooves, projections, and irregularities may be formed on the surface of the anti-slip member to improve the anti-slip effect.

As shown in FIG. 3, the bracket 3 is made of stainless steel having a substantially inverted L-shaped cross section obtained by bending a plate-like member at two locations at 90 °. The bracket 3 is slidably mounted on the column 1 by engaging a bolt penetrating a bolt hole formed in the bracket 3 with a nut inserted into the groove 12, and the other end of the bracket 3 is provided with a bolt 5. Is fixed to the wall surface 4 of the structure.

In the fixed ladder of the present invention, each of the column 1, the step 2 and the bracket 3 is made of stainless steel such as SUS304, and has sufficient strength and durability.

The fixed ladder 10 of the present invention can be provided with a circular ring-shaped fall prevention safety guard 7 as shown in FIGS. As a result, it is possible to reliably prevent the worker from accidentally dropping. The safety guard 7 is detachably attached to the pillars 1 and 1 of the ladder. Note that the safety guard 7 is also preferably made of stainless steel such as SUS304, and the surface of the safety guard may be subjected to non-slip processing.

Further, the fixed ladder 10 of the present invention can be provided with an upper step 8 as shown in FIG. This will secure sufficient scaffolding and enhance safety. The upper step is not particularly limited, but is preferably made of stainless steel such as SUS304.

In addition, the lower part of the fixed ladder 10 of the present invention can be provided with an ascent / descent prevention door 11 and an auxiliary ramp 9 as shown in FIG. Since the auxiliary ramp 9 is a slide type, it can be pulled out and used when necessary. When not in use, the auxiliary ramp 9 can be stored in the lock-equipped elevating / preventing door 11 to prevent outsiders from entering. The lifting prevention door 11 and the auxiliary trap 9 are not particularly limited, but are preferably made of stainless steel such as SUS304.

As described above, the fixed ladder of the present invention is excellent in workability, safety, durability and high strength, and is particularly suitable for houses, schools, factories, buildings, chimneys, water supply tanks and the like. It can be suitably installed on the side of a structure.

Although the stainless steel fixed ladder of the present invention has been described above, the present invention is not limited to the above embodiment, and various changes may be made without departing from the gist of the present invention.

[0032]

[Effect of the invention]

 According to the present invention, when attaching a ladder to the side of a structure such as a house, school, factory, building, chimney, water tank, etc., remove the reinforcing bars embedded in the concrete wall and install the bracket with good workability. Can be. In the case of wooden buildings, the brackets can be arranged in accordance with the position of the reinforcing members, and the workability is excellent.

Furthermore, the fixed ladder of the present invention has excellent strength and corrosion resistance and is made of high-strength stainless steel, so that it has sufficient strength even when formed into a small-diameter hollow member. It has durability.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a fixed ladder according to an embodiment of the present invention.

FIG. 2 is a perspective view showing another fixed ladder.

FIG. 3 is a partial schematic view showing a state where a fixed ladder is attached to a side surface of a structure via a bracket.

FIG. 4 is a partial schematic plan view of the bracket.

FIG. 5 is a partial schematic plan view of another bracket.

FIG. 6 is a partial schematic side view of a bracket.

FIG. 7 is a partial perspective view showing a safety guard.

FIG. 8 is a schematic plan view showing the safety guard.

FIG. 9 is a schematic sectional view showing a fixed ladder provided with an upper step.

FIGS. 10A and 10B are front views of a fixed ladder provided with an elevating door and an auxiliary ramp below the ladder.

11A is a front view and FIG. 11B is a side view of a conventional fixed ladder made of stainless steel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Prop 2 Step beam 3 Bracket 4 Wall 7 Safety guard 8 Upper step 9 Auxiliary ramp 10 Fixed ladder 11 Elevation prevention door 12 Groove

Continued on the front page (72) Inventor Noriyuki Kawada 1-3-21, Tsukikanishi, Joyokan, Toyohira-ku, Sapporo-shi, Hokkaido

Claims (6)

[Utility model registration claims] 1. A stainless steel fixed type comprising a plurality of stainless steel steps crossed at a fixed interval between a pair of stainless steel substantially cylindrical supports, and attached to the wall of the structure via a stainless steel bracket. In the ladder, a fixed ladder made of stainless steel, wherein a bracket is attached to the two columns so as to be slidable in a vertical direction. 2. A stainless steel fixed type comprising a plurality of stainless steel stairs spanned at a fixed interval between a pair of stainless steel substantially cylindrical pillars, and attached to a wall surface of the structure via a stainless steel bracket. A fixed ladder made of stainless steel, wherein a non-slip member is formed to cover the stainless steel step. 3. A stainless steel fixed type in which a plurality of stainless steel stairs are bridged at regular intervals between a pair of stainless steel substantially cylindrical supports, and attached to the wall surface of the structure via a stainless steel bracket. In the ladder, a fixed ladder made of stainless steel, wherein a bracket is slidably mounted in the up and down direction on both of the columns and a non-slip member is formed on the stainless steel step. 4. The stainless steel fixed ladder according to claim 2, wherein the non-slip member is a heat-shrinkable rubber tube that covers the entire surface of the step. 5. The fixed ladder made of stainless steel according to claim 1, wherein a ring-shaped fall prevention safety guard is attached via a pair of columns. 6. The fixed ladder made of stainless steel according to claim 1, further comprising a lift prevention door and an auxiliary ramp attached to a lower portion of the ladder.