JP3020637U - Paving blocks - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To prevent a serious defect from occurring even if snow melting water penetrates into a concrete layer of a pavement block and a little is destroyed by repeated freezing at night and melting during the day. . SOLUTION: A rectangular steel pipe piece 10 obtained by cutting a long rectangular steel pipe into a certain length, a concrete filling layer 11 that fills the hollow portion of the rectangular steel pipe piece and is solidified, and a non-slip groove 13 on the upper surface.
And a rubber thick plate 12 whose lower surface is bonded and fixed on the upper surface of the rectangular steel pipe piece.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a paving block for paving roads, sidewalks, plazas, etc. that are laid side by side, and is particularly suitable for cold regions.

[0002]

[Prior art]

 According to Utility Model Registration No. 3011287, the applicant has a metal plate having an anchor fixed on the lower surface and a groove for preventing slippage on the upper surface, and has a lower surface on the upper surface of the metal plate in the same shape as the metal plate. We proposed a paving block consisting of a bonded thick rubber plate and a thick concrete base layer that has the same shape as the metal plate and has anchors of the metal plate embedded and the metal plate fixed to the upper surface.

[0003]

[Problems to be solved by the device]

 In the conventional paving block described above, since the anchor is welded to the lower surface of the metal plate, it is troublesome and the welded anchor may be separated from the metal plate due to impact or the like. In addition, since a dedicated formwork is required to form the concrete base layer, the cost of the formwork is added to the product, and the product cost increases accordingly. Since the concrete base layer is made of no-slump concrete and is immediately demolded, there will be some variations in product dimensions.

Furthermore, when laying in a cold area such as Hokkaido, the snow accumulated on the surface melts at a high temperature in the daytime, and the snowmelt water permeates the joints of the block and penetrates into the concrete base layer. To freeze. The above-mentioned melting and freezing are repeated every day inside the concrete base layer, causing the concrete base layer to be destroyed in due course, which causes looseness between the lower surface of the metal plate and the upper surface of the concrete base layer, which causes When the vehicle is hit, the concrete base layer further breaks, the anchors loosen, and the metal plate peels off. If the concrete base layer is destroyed or the metal plate together with the rubber slab is separated, the block must be replaced with a new one, which requires cost and labor for laying for replacement.

[0005]

[Means for Solving the Problems]

 The present invention was developed in order to obtain a paving block that does not have the above-mentioned problems, and a rectangular steel pipe piece obtained by cutting a long rectangular steel pipe into a certain length and a hollow portion of the square steel pipe piece. And a hardened concrete layer having a non-slip groove on the upper surface, and a rubber thick plate having a lower surface adhered and fixed on the upper surface of the rectangular steel pipe piece.

[0006]

[Embodiment of device]

 The drawing is a paving block of the present invention, 10 is a rectangular steel pipe piece obtained by cutting a long rectangular steel pipe into a certain length, 11 is a concrete packed layer which fills the hollow portion of the rectangular steel pipe piece and is solidified, 12 Indicates a rubber thick plate having an anti-slip groove 13 on the upper surface and having a lower surface adhered and fixed on the upper surface of the rectangular steel pipe piece.

The long rectangular steel pipe has various thicknesses, square cross sections and rectangular cross sections of various sizes as specified in JIS G 3466. In the drawings, the long side is 150 mm, the short side is 80 mm, A rectangular steel tube piece 10 having a rectangular cross section with a thickness of 4.5 mm was cut into a length of 200 mm. However, the present invention is not limited to this, and a rectangular steel pipe having an arbitrary size and thickness may be selected and cut into an arbitrary predetermined size to form a rectangular steel pipe piece.

In the concrete filling layer 11, a large number of rectangular steel pipe pieces 10 are vertically arranged on an iron plate or the like coated with a release agent, and fresh concrete is poured into the inside of one of the pieces from the upper end to be solidified. By molding. It is preferable that vibration is applied to the iron plate when pouring fresh cement, or that a rod-shaped vibrator is inserted into a square steel pipe addressed to one piece so that the raw concrete is clogged in the square steel pipe without a gap.

It is preferable that the thick rubber plate having the anti-slip groove 13 on the upper surface be formed of a material in which natural rubber and synthetic rubber are mixed so as to have high abrasion resistance and excellent tear strength. Although the thickness is arbitrary, it is about 15 to 20 mm, and the anti-slip grooves 13 on the upper surface are provided in parallel with a groove width of about 7 mm, a depth of 7 mm, and an interval of 10 mm, but the shape and depth of the grooves are also arbitrary.

A strong adhesive that prevents the rubber from peeling is used to bond and fix the lower surface of the thick rubber plate and the upper surface of the rectangular steel pipe piece. The adhesive used is Chemlok under the trade name and Lord far East Inc. under the manufacturer name. Is suitable.

The thick rubber plate may be adhered to the upper surface of the rectangular steel pipe piece after the concrete filling layer 11 is formed in the hollow portion of the rectangular steel pipe piece or before the concrete filling layer 11 is formed.

[0012]

[Effect of device]

 The pavement block of the present invention is made by cutting a long rectangular steel pipe that has already been made into a rectangular steel pipe piece, filling the hollow part with a concrete filling layer, and adhering and fixing a thick rubber plate with anti-slip grooves on the upper surface Since it is made up of two parts, the welding process is unnecessary, and since the square steel pipe piece is used as a form, no form is required for forming the concrete-filled layer. Therefore, it is possible to manufacture a product with no dimensional error without labor and cost. In addition, since the concrete-filled layer fills the inside of the rectangular steel pipe pieces, even if the snow-melting water penetrates the joints and enters the inside of the concrete, and even if it is partially destroyed by repeated freezing and melting during the winter, Since the outside is wrapped with a strong square steel pipe piece, the product itself does not have a serious defect requiring replacement. Therefore, the installed condition can be maintained permanently.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a paving block of the present invention.

FIG. 2 is a cross-sectional view of FIG.

[Explanation of symbols]

 10 Rectangular Steel Pipe Piece 11 Concrete Filled Layer 12 Rubber Thick Plate 13 Non-Slip Groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yutaka Nagasawa 108 Furukawa, Yuni-cho, Yubari-gun, Hokkaido Inside the Hokkaido Rubber Industry Co., Ltd. 72) Inventor Kei Horiguchi, 3-7 Zenohan, Otaru, Hokkaido

Claims (1)

[Scope of utility model registration request] 1. A rectangular steel pipe piece obtained by cutting a long rectangular steel pipe into a certain length, a concrete filling layer that fills the hollow portion of the rectangular steel pipe piece and is solidified, and a non-slip groove on the upper surface, A paving block comprising a thick rubber plate having a lower surface adhered and fixed onto an upper surface of a steel pipe piece.