JPH0528320Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention relates to a floating ladder that is installed on the inside of a quay wall or pond embankment.

<Conventional technology> Conventionally, ladders that are attached to quay walls, etc. have a plurality of horizontal bars made of rubber between a pair of rubber supports, and each support has a fixed part integrally attached to the quay wall. These ladders remain installed along quays, etc., even when the water level rises and a portion of the ladder is submerged.

<Problems to be solved by the invention> In the above-mentioned ladder, the amount of protrusion from the quay to the offshore side is only the thickness of the fixed part plus the thickness of the ladder, making it difficult for people who fall into the water to leave the quay. If the ladder is even slightly separated, it becomes difficult for those who fall to reach the quay, and when the water level is high, ladders that are under the water are useless in saving the lives of those who fall. There's a problem. Furthermore, since conventional ladders are fixed to quay walls using a plurality of fixing parts, there is also the problem that installation costs are high.

<Means for solving the problem> The present invention consists of a pair of side columns made of a floating flexible material with a reinforcing body embedded inside, and a pair of side columns made of a floating flexible material with a reinforcing body embedded inside. It is capable of floating on the water surface, and is composed of a plurality of horizontal bars installed at predetermined intervals between the columns on both sides, and connecting portions provided at the ends of the same side of the columns on both sides.

<Function> The joints provided at the upper ends of the pillars on both sides connect the ladder to the quay wall, and the reinforcements provide the strength of the ladder so that it is safe for people to hang from the ladder. Due to its flexibility, the part of the flexible body that touches the water's edge from the joint can be appropriately arranged along the shape of the quay, and due to the floating flexible property of the ladder, the part that touches the water surface can be placed Bend it toward the water surface, and let it float on the water surface from there to the free end.

<Example> This example will be explained using FIGS. 1 to 3. As shown in Figure 1, this ladder is connected to the slope of the quay at the top of the ladder, and is placed along the slope of the quay from the top of the ladder to the part that reaches the water surface, and from the part that reaches the water surface to the slope of the quay. The side parts float on the water surface. In Figure 3, 1,
1 is a side pillar, 2, 2... is a horizontal beam that spans both side pillars,
Reference numerals 5 and 5 are connection parts that connect the ladder to the quay wall.

As shown in FIG. 3, the side columns 1, 1 are constructed by embedding a chain 4 in a cylindrical urethane foam 3 (floating flexible body), and each chain ring 6, 6 of the chain 4 is
... are each considered to be in a relaxed state. These side columns 1, 1 are arranged in parallel with a predetermined interval apart. The reason why the chain is in a relaxed state is to allow the side columns to bend freely.

The coupling parts 5, 5 are provided at the upper ends of these side columns 1, 1, and the coupling parts 5, 5 are formed by a rotating part 8 that engages with a chain ring 6 at the upper end of the chain 4. The rotating part 8 is a member having two engaging holes 8a and 8b extending in directions perpendicular to each other. A chain ring 6 is engaged with the chain ring 6. A fixed part 7 is provided on the quay slope 9, and the fixed part 7 has a shaft 10, with which the engagement hole 8b of the rotating part 8 is engaged. This engagement structure allows the ladder to rotate along a plane perpendicular to the quay wall slope 9 in the length direction of the ladder. 11 is a through hole provided in the fixing part 7, and an anchor bolt is inserted into this through hole to connect the connecting part 5,
5 is fixed to the quay slope 9.

The horizontal beam 2 has a chain 13 embedded in a cylindrical urethane foam 12 having a diameter slightly smaller than the diameter of the side pillar. The horizontal beam 2 is provided between the side columns 1, 1 at right angles to the side columns 1, 1 and parallel to each other. As shown in FIG. 3, the respective chain rings 14, 14 at both ends of the chain 13 of the horizontal beam 2 are engaged with the chain rings 6, 6 at corresponding positions of the chains 4, 4 of the side columns 1, 1. It matches.

When the water level is high, the ladder constructed in this manner is arranged along the quay slope 9 from the upper end of the ladder to the part touching the water edge due to the flexibility of the side columns 1, 1, as shown by the solid line in Figure 1. The length from the water's edge to the free end floats on the water surface due to the buoyancy of the ladder. As shown by the imaginary line in Figure 1, as the water level decreases, the part of the ladder along the quay slope 9 becomes longer.
The part below the water edge floats on the water surface.
When this floating ladder is used in this way, the length of the part of the ladder that lies along the quay slope 9 and the part that floats on the water surface changes according to changes in the water level, and the part of the ladder that is in contact with the water is always on the water surface. Float above.

In this embodiment, a rotating part 8 separate from the chain 4 is used as the coupling part, but other coupling methods can also be used. For example, connect the chain ring at the top end of the chain directly to the shaft 1.
0, and the fixing part 7 can also be engaged with U.
It may also be a character-shaped anchor bolt. In addition, although a chain was used as the reinforcing body, wire rope or synthetic fiber rope may also be used, and a highly rigid material such as a steel plate may be used as the reinforcing body for the horizontal beam. It can also eliminate slack.
Furthermore, although the cross-sectional shapes of the side pillars and horizontal bars are circular, they can also be polygonal, such as quadrangular. side pillar 1,1
By providing a connecting part at the lower end (not shown) and adding a floating ladder, it is also possible to obtain a ladder length that corresponds to the height of the quay.

<Effects of the invention> According to this invention, since the ladder is floating on the water surface from the water edge of the quay slope toward the offshore, it has the effect that those who have fallen into the water can easily grab it as a handhold to approach the quay. By adjusting the length of the ladder according to changes in the water level, you can always obtain the minimum required length of the floating ladder. Furthermore, the joint that connects the ladder to the quay is
Since only one pair needs to be installed at the top of the ladder, installation costs are also reduced.

[Brief explanation of the drawing]

Figure 1 shows an embodiment of the floating ladder according to this invention, and is a schematic longitudinal sectional side view showing the state connected to the quay slope, and Figure 2 shows the floating ladder of the same embodiment, which is the same as Figure 1. FIG. 3 is a partially enlarged front view of the floating ladder of the same embodiment. DESCRIPTION OF SYMBOLS 1...Side column, 2...Horizontal beam, 3...Urethane foam (floating flexible body of side column), 4...Chain (reinforcement body of side column), 5...Connection part, 9... ... Quay slope.

Claims (1)

[Scope of utility model registration request] A pair of side pillars made of a floating flexible material with a reinforcing body buried inside, and a pair of side pillars made of a floating flexible material with a reinforcing body buried inside, installed at a predetermined interval between the above-mentioned side pillars. A floating ladder capable of floating on the water surface, which is composed of a plurality of horizontal beams and connecting portions provided at the ends of the same side of both pillars.