JPS5918315B2 - man conveyor steps - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a step for a passenger conveyor such as an escalator or an electric road, and particularly to a step that is effective in terms of durability and economy.

The field of use for passenger conveyors has expanded from commercial buildings to public facilities, and they have become established as essential service equipment within buildings.

Particularly recently, as part of the urban transportation network, they have begun to be installed in densely populated areas such as subway stations and elevated stations, forcing them to operate in harsher environments than ever before.

For this reason, compared to the environment in which it is used in department stores, etc., which have been widely used in the past, it is necessary to take into consideration the lifespan, such as corrosion resistance assuming underground water, and wear resistance in response to an increase in the number of customers. New needs that have never existed before are beginning to emerge, and it is expected that a passenger conveyor that can meet these needs will emerge.

Here, as shown in Fig. 1, the conventional passenger conveyor has a step 1 arranged in an endless manner to carry passengers, and a rotating body such as a rail 2 that rotates synchronously with this step 1. , a parapet 3, an exterior plate 4, and other stationary bodies, all of which are supported by a sturdy body frame 5.

As shown in Fig. 2, the step 1, which is the main component for passenger transport, is composed of a cleat section 1a that passengers step on, a riser section 1b that closes the step, and a frame section 1c that serves as a bone member. The structure is such that the movement occurs when rollers 1d disposed at the front and rear roll.

Furthermore, the details of the cleat 1a have a width W of approximately 1 meter, and are arranged over the entire longitudinal direction of the passenger conveyor, and the cross section shown in Fig. 3 is the most common. It's becoming a target.

That is, its front surface is formed of a large number of uneven surfaces having a top part 1e and a bottom part 1f, and reinforcing parts 1g as shown in FIG. 4 are usually arranged in a lattice shape on the back surface. It is.

In this way, the upper surface of the step 1 is formed with a large number of uneven patterns and the thick reinforcing part 1g, so it is quite sturdy and is designed to allow passengers to use it with peace of mind.

On the other hand, the riser portion 1b has the same width as the cleat portion 1a, and serves as a riser plate for closing the difference in level of each of the 10 steps.

In terms of appearance, it is shaped into a curved surface so as not to interfere with the vertical movement of the step 1 itself and the rotation of the belt.
In addition, the cleat portion 1a usually has an uneven surface so that the front edge of the cleat portion 1a can be bitten into the cleat portion 1a.

The cleat part 1a and the riser part 1b mentioned above are usually manufactured by die-casting using an aluminum alloy (with some exceptions, they are made of wood), and the It is finished with considerable precision for the purpose of preventing personal accidents.

As mentioned above, in the conventional step configuration, corrosion resistance,
Problems have been pointed out in terms of wear resistance and economic efficiency, and improvements are desired.

The corrosion resistance of passenger conveyors has been discussed in terms of corrosion caused by underground water when installed in subway stations, and corrosion caused by adhesion of concrete at general construction sites, and various countermeasures have been taken.

However, aluminum alloy (hereinafter abbreviated as aluminum), which is the main material of Step Group 1, is said to have poor corrosion resistance, and is particularly susceptible to concrete (alkaline), and its adhesion causes unsightly black spot corrosion around 10 days. Put it away.

By the way, in the literature of the Japan Institute of Metals (published in 1960, Corrosion Resistant Alloys), the alkali resistance data is as follows:
It is said to be 25,000 times more corrosive than stainless steel and iron.

This result is extremely serious because the area around the passenger conveyor is covered with strong alkaline concrete, and the effects of this are unavoidable, and the reality is that the majority of passenger conveyors are corroded to some extent.

On the other hand, wear resistance is particularly important in selecting the material for the cleat portion 1a since passengers ride on the cleat portion 1a of the step group 1 and are constantly affected by contact objects.

Generally, the wear resistance of aluminum is said to be about 1/10 that of stainless steel or iron, and this value is a commonly accepted opinion among professional engineers.

Furthermore, we cannot ignore the economic realities of aluminum smelting, which has recently experienced a serious deterioration in the power situation, and which continues to drive up costs at an alarming rate.

As described above, it is easily understood that the aluminum constituting the conventional step group 1 requires reexamination in terms of corrosion resistance, wear resistance, and economic efficiency.

An object of the present invention is to obtain a step with excellent durability.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In Figures 5 and 7, the overall structure of the passenger conveyor, which has step groups arranged in an endless manner and is composed of band rails 2, handrails 3, main frame 5, etc., is completely the same as the conventional one. Although not shown in the drawings, the present invention is characterized in that portions corresponding to the conventional cleat portion 1a and riser portion 1b are formed by corrugated thin plates.

Here, regarding a single step, its fleet part 6a
To explain in detail as a representative example, the cleat portion 6a has 1 to 3 parts.
Using a thin plate of approximately millimeter size, a groove A1 corresponding to the upper surface of the cleat portion 6a is provided in the upper mold A as shown in FIG. 7, and a lower push-up mold B is inserted into the groove A□.
It is designed to be molded with.

Although the forming method shown in FIG. 7 is the most commonly used plastic working technique, the forming method of the cleat portion 6a of the present invention is not limited to this, and may be used among a wide range of other forming techniques. You may choose.

By such a plastic working method, the top portion 6 of the cleat portion 6a is
e and the bottom part 6f are formed one after another, and a reinforcing body 7 is provided as a reinforcing means for these parts.

The cleat portion 6a and the reinforcing body 7 are spot welded by inserting electrodes from the arrows X and Y in FIG.

In this way, the form shown in Fig. 6, which corresponds to the conventional Fig. 4, is constructed, and finally the step (product of the same shape as the conventional Fig. 2) is constructed.
It provides:

The material for the cleat portion 6a is preferably stainless steel or iron, which have excellent durability, as described above, and preferably stainless steel, which does not require special painting.

Further, the joining of the cleat portion 6a to the reinforcing body 7 is not limited to the illustrated spot welding, and other welding methods such as bolts may be used without any problem.

Although the cleat portion 6a has been described above as a representative example, the riser portion 6b (shown in FIG. 8).

Even if the cleat part 6a of the present invention is
It can be provided in the same way.

On the other hand, as a measure to compensate for the only problem of the present invention explained in FIG. 5 etc., the following improvement is added.

That is, openings K (FIG. 6) are formed at the front and rear ends of the cleat portion 6a, which is the wavy formed body of the illustrated thin plate.

There is a possibility that a passenger may insert a thin object such as the tip of a Western umbrella into this opening K, causing damage to this step 6. Cleats 8 and 9 are arranged in the front and rear, respectively, so that they can be freely removed with bolts or the like.

The opening K of the cleat 6a is completely closed to protect the cleat 6a.

Note that by making the end cleats 8 and 9 a colored body (such as yellow) of synthetic resin, the boundaries of each step can be made clear and a safe usage environment for passengers can be created.

Furthermore, the end cleat 8 is not absolutely necessary since the step groups are close to each other and the above-mentioned defects in the openings do not pose much of a problem.

According to the present invention described above, there is an advantage that a step with excellent durability can be provided.

In the above embodiment, the molding method, bonding, etc. were also described, but it is needless to say that the fabrication method is not limited to the exemplified method and may be manufactured by any other method.

Furthermore, there is no problem in applying the corrugated molded body to cleats and/or risers.

[Brief explanation of the drawing]

Figure 1 is a side view of the upper part of the passenger conveyor, Figure 2 is a perspective view of a conventional step, Figure 3 is a sectional view taken along line I in Figure 2, and the 4th tooth is an oblique view of Figure 3. The back view as seen from below, FIG. 5 and subsequent figures show one embodiment of the present invention.
The figure is a cross-sectional view corresponding to the conventional figure 3, Figure 6 is a rear view of figure 5 seen diagonally from below, figure 7 is a cross-sectional view showing an example of the molding method, and figure 8 is the conventional figure 5. A single perspective view of the step corresponding to Figure 2, Figure 9 is a sectional view taken along the line ■-■ in Figure 8,
FIG. 10 is an enlarged perspective view of the main part of FIG. 8. 6... Step, 6a... Cleat part, 6b... Riser part, 7... Reinforcement body,
8, 9... End cleat, K... Opening.

Claims (1)

[Scope of Claims] 1. A wave-shaped molded body formed by bending a thin steel plate at the step of a letterman conveyor, which is composed of a cleat part, a riser part, and a frame part to which these cleat parts and riser part are attached. and a reinforcing body to which the wavy molded body is fixed is provided between the wavy molded body and the frame, and a member for blocking the open end at least at the riser side opening end of the front and rear open ends of the wavy molded body. The step of the passenger conveyor is characterized by the provision of. 2. The step of the passenger conveyor according to claim 1, wherein the member that closes the riser side open end is an end cleat of a different color and type from the wave-shaped molded body.