JPH0213644Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] This invention can be used as scaffolding boards and footboards at construction or civil engineering construction sites, as lifting devices, as scaffolding for working on steel poles on power transmission lines, and as gratings for side ditches and runways. The present invention relates to tread boards used for roads, roads, and other simple paving boards where anti-slip protection is required.

〔the purpose〕

A wide variety of treads have been proposed in the past, but their anti-slip performance has been inadequate for those used in muddy ponds and frozen areas that require anti-slip properties.

Typical walking treads include:
Special Publication No. 51-46335, Publication No. 52-3865,
The footboards or lining boards disclosed in Publication of Utility Model Publication No. 52-3866, etc., all have treads made of thin parallel crosspieces, and the view from the top is a single plane. There is. The disadvantages of such footboards are that they tend to slip when force is applied in the longitudinal direction of the crosspiece, and because the top surface is flat, mud, snow, etc. tend to adhere to them and it is difficult to remove them. There are other types that use expanded metal, but they also have the same drawback as the top surface has a flat outlook. Additionally, expanded metal has problems in terms of strength.

Such defects are fatal, for example, for ski lift devices and scaffold boards for power transmission poles, which require maintenance even in the harshest of winters.

Therefore, the present invention improves the shape and structure of the tread surface of the tread to obtain a good anti-slip function.

〔composition〕

This idea is characterized by the shape of the tread surface of the tread, and the tread surface is basically composed of alternating ridges and valleys, like a so-called corrugated board. The ridges have lip-like protrusions at the top, and
In the valley, lip-shaped openings are arranged at equal intervals along the longitudinal direction of the ridge and valley, respectively, and the push-open protrusions and the openings are arranged alternately.

The treads are made of corrosion-resistant contact plated steel plates (for example, JISG3131 general structural hot-rolled thin plates) or hard synthetic resin, and the basic structure of the corrugations, push-open protrusions, and perforations are all made by pressing, etc. It is formed. As a result, the push-open protrusions in particular are formed to protrude from the tops of the ridges.

〔Example〕

One embodiment of the present invention will be described based on the drawings. Figure 1 shows the present invention as a unit (i.e., these can be combined to create a wider platform), which has a shallow box shape with a tread at the top and front and back surfaces and both sides, for example: Width 36 x length 400 x height 5 x
The thickness is 0.2cm. In addition, some embodiments of the present invention include only one of the front and rear surfaces or both sides, and some have a single plate.

Now, the tread 2 of the unit body 1 has a non-slip structure including ridges 3, valleys 4, push-open protrusions 5, and openings 6 (second to fifth holes).
(see figure) exists. As shown in FIG. 2, in this example, the push-opening protrusions 5 and the openings 6 are arranged at regular intervals and alternately in the width direction of the unit body. The push-open protrusion 5 is formed by the ridge 3 as shown in Figs.
It has a shape that is pushed open from below at the top of the mouth, and has a lip-like shape as a whole. In this embodiment, a small protrusion 7 (FIG. 5) with a gentle sawtooth shape is formed on the upper edge of the protrusion. The opening 6 is formed at the bottom of the valley 4 by being forced open from above, and also has a lip shape. Such a tread 2 is formed in advance by making cuts at the locations where the push-opening protrusions 5 and the openings 6 are to be formed, and then forming them all at once using a press or the like. In this case, the push-open protrusion 5 further protrudes from the top of the ridge 3, and is subjected to the push-open action along with the formation of the opening 6 in the valley 4, so the overall shape of the ridge 3 is thick at the push-open protrusion, and the spaces between each protrusion are fine and narrow. This results in a low structure (see Figure 5). When providing the small protrusions 7, the above-mentioned cuts may correspond to a gentle sawtooth shape. The gentle sawtooth shape is a shape as illustrated in FIG.

The arrangement of the push-open protrusions 5 and the holes 6 may be aligned in the longitudinal direction of the unit, and one or both sides of the unit may be continuous with other units with respect to the push-open protrusions 5 and the holes 6. It is also preferable to have a single-cut or double-cut configuration as shown in FIG.

[Operation and Effect] With the above configuration, the tread surface of the present invention is formed to have an uneven outlook. Furthermore, the unevenness is present from any direction due to the ridges 3, valleys 4, and push-open protrusions 5, and since the changes are large, the anti-slip effect is great. Unlike conventional grid gratings and expanded metal, there is no directionality in the anti-slip effect.

Since snow, mud, etc. fall downward from the push-open protrusion 5 and the opening 6, there is no clogging, and the sliding effect is not reduced by snow accumulation, heavy rain, mud at the site, etc.

Since the basic structure of the tread surface 2 is a waveform of ridges 3 and valleys 4, it has extremely high bending resistance.

Further forming a small protrusion 7 on the upper edge of the push-open protrusion 5 improves the anti-slip effect and has the effect of crushing mud, ice and snow from the hard sole of the shoe.

Since it is made by pressing, it is easy to manufacture and can be provided at low cost.

[Brief explanation of the drawing]

Figure 1 is an overall perspective view, Figure 2 is a plan view, and Figure 3 is a perspective view of the entire structure.
The figure is a sectional view taken along the - line in FIG. 2, FIG. 4 is a sectional view taken along the - line in FIG. 2, and FIG. 5 is an enlarged perspective view of a part of the tread. FIG. 6 is a diagram showing an example of a sawtooth shape. 1: unit body, 2: tread, 3: ridge, 4: valley, 5:
Push-open protrusion, 6: Open hole, 7: Small protrusion.

Claims (1)

[Claims for Utility Model Registration] (1) The tread shape is based on a corrugated pattern of parallel ridges and valleys, and the top of the ridges has lip-shaped push-open protrusions at equal intervals with the long axis in the direction of the ridges. Furthermore, the footboard is characterized in that the bottom of the valley is formed with lip-shaped openings whose long axes are in the direction of the valley, and are arranged in alternating positions with the push-open projections. (2) The stepboard according to claim 1 of the utility model registration, characterized in that the push-opening projection has small, loosely serrated projections formed along its upper edge. (3) The step board according to claim 1 or 2 of the utility model registration claim, characterized in that the overall shape is a shallow box-like shape with the tread as the top surface and front, rear, and side surfaces. (4) A utility model registration claim described in any one of claims 1 to 3, characterized in that a single step board is a unit that forms a wider stepping platform when combined. A tread. (5) The stepboard described in any one of claims 1 to 4 of the utility model registration claim, characterized in that the material is a thick galvanized steel plate or a hard synthetic resin.