JPH0450084Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a washing device for washing out aggregate from the surface layer of concrete blocks for sidewalks.

[Prior Art] As shown in FIGS. 3 and 4, a concrete block 50 for a sidewalk of a type in which aggregate 53 is exposed from a surface layer 51 has been known.
The concrete block 50 for the sidewalk can have a surface layer 51 laminated on the back layer 52, and the surface layer 5
1, a joint cavity 54 is formed by scraping the base material 55, and the aggregate 53 is exposed in a protruding state through the joint cavity 54.

When the sidewalk concrete block 50 is molded using the surface layer 51 as the lower surface of the molding frame, it is inevitable that the surface side of the aggregate 53 is coated with the slag 56.

Incidentally, washing is generally carried out by standing up a concrete block 50 for a sidewalk as shown in FIG. The purpose is to form joint voids 54 and make the aggregate 53 stand out.

[Problems to be solved by the invention] However, since the water flow S is perpendicular to the surface of the sidewalk concrete block 50, the aggregate 53
The aggregate peripheral edge 53b is obstructed by the upper edge 53a of
A base material remaining portion 57 was formed at the base material. Therefore, it was not possible to raise the aggregate 53 beautifully.

The purpose of this invention is to provide a washing device for sidewalk concrete blocks equipped with a nozzle that can expose aggregate on the surface of the sidewalk concrete blocks so that it floats up well.

[Means for Solving the Problems] The device for cleaning concrete blocks for sidewalks according to the present invention has one nozzle that sprays a water stream diagonally onto the surface of the surface layer, and the other nozzle spaced apart from this that sprays water diagonally from the opposite direction. The structure is characterized by the fact that it is equipped with

[Operation of the invention] Since the water stream is sprayed diagonally from the nozzle onto the surface layer of the concrete block for the sidewalk, the water stream is sprayed diagonally onto the surface layer and scrapes the contour around the aggregate.

On the other hand, the contour around the aggregate is scraped off in one direction by the spray from the nozzle. By spraying from the other nozzle spaced apart from this, the other direction of the surrounding outline of the aggregate is scraped away, and the surrounding outline is beautifully washed out.

[Embodiment of the invention] An embodiment of the invention will be described below with reference to FIGS. 1 and 2.

On the surface of the sidewalk concrete block 50,
On the other hand, first nozzles 1 as nozzles are arranged apart from each other. The first nozzle 1 is installed diagonally downward so as to form an angle θ1 with the surface of the sidewalk concrete block. Further, a second nozzle 2 as the other nozzle is arranged so as to face the first nozzle 1.
is provided. The second nozzle 2 is installed diagonally downward so as to form an angle θ2 with the surface of the sidewalk concrete block. These first and second nozzles 1 and 2 are arranged opposite to each other at intervals. The angles θ1 and θ2 are each within a range of 70 degrees to 20 degrees, preferably 45 degrees. These first and second nozzles 1 and 2 are supported by suspension members 3 and 4, respectively, and are configured to reciprocate in the directions of arrows P and Q between one end 6 and the other end 7 of the base 5. ing.

The base 5 on which the sidewalk concrete block 50 is placed is pivoted at one end 6 by a shaft 8, and the other end 7 is attached to a rod 10 of a cylinder 9 serving as a lifting means, and is pushed upward at an angle α. It is now possible to tilt it. As the above angle α,
Preferably, the angle is within the range of 60 degrees to 30 degrees.

In the figure, reference numeral 11 denotes a stopper provided at one end 6 of the base 5. When the base 5 is tilted, the stopper 15 prevents the sidewalk concrete block 5 from moving from the base 5.
This prevents the 0 from falling.

Next, the operation based on the above configuration will be explained.

First, a concrete block 50 for a sidewalk is placed on the base 5. If the base 5 is then tilted by extending the rod 10 of the cylinder 9, since the surface layer 52 is tilted, the first,
Water streams S1 and S2 are ejected from the second nozzles 1 and 2.

As shown in FIG. 2, the water flow S1 of the first nozzle 1
sprays the aggregate peripheral edge 53b obliquely in one direction, for example from the left side. As a result, the base material 55 is washed out without being blocked by the upper edge 53a of the aggregate, and the peripheral edge 53b of the aggregate located on the upper slope is embossed.
In this case, most of the base material 55 and slag 56 are washed out and flowed downward, so the joint gap 5 with the base material remaining portion 57 on the upper side of the lower aggregate periphery
4' is formed.

Subsequently, the water stream S2 from the second nozzle 2 is sprayed obliquely from the other direction facing the first nozzle 1, for example from the right side. In this case, the water stream S2 is blown onto the base material remaining portion 57 from the upper side of the aggregate periphery.
As a result, the joint gap 5 from which the base material remaining portion 57 has been removed
4'' will be formed.

Since the first and second nozzles 1 and 2 move in the directions of arrows P and Q, they sequentially move downward to fill the joint gap 5.
4'' will be formed.

According to the above-mentioned embodiment, by arranging the first and second nozzles 1 and 2 to face each other apart, the base material 55 can be successively scraped off at an acute angle from the top to the bottom of the slope, and the aggregate 53 can be scraped off at an acute angle. It can be made to stand out sharply. At this time, the slag generated during washing is swept downward, so that it does not remain attached to the surface of the sidewalk concrete block 50.

In the above embodiment, the nozzles 1 and 2 have been illustrated and described, but they can be designed so that their angles can be adjusted. Of course, in addition to the first and second nozzles, it is also possible to arrange other nozzles facing each other at intervals from different directions.

Furthermore, the base 5 can be applied not only to an inclined table but also to a horizontal table.

[Effects of the Invention] As explained above, the sidewalk block cleaning device according to the present invention provides the following effects.

Since the water stream is sprayed obliquely onto the surface layer, no base material remains around the aggregate, and the joint gaps can be neatly scraped off and exposed.

Since the nozzles are diagonally opposed to each other, the aggregate surrounding contour can be washed out evenly.

[Brief explanation of the drawing]

Figures 1 and 2 relate to an embodiment of the device for cleaning concrete blocks for sidewalks according to the present invention, in which Figure 1 is a block diagram of the same, Figure 2 is an enlarged explanatory diagram of the same to explain the operation, and Figure 3 is an explanatory diagram of the same. 4 is a perspective view of a concrete block for a sidewalk, and FIG. 4 is an enlarged explanatory view of a conventional washing state. 1... One nozzle, 2... Other nozzle, 3, 4
... Hanging member, 5 ... Base, 11 ... Stopper,
50... Concrete block for sidewalk, 51...
Surface layer, 52... Back layer, 53... Aggregate, 5
4, 54', 54''... joint void.

Claims (1)

[Scope of utility model registration request] A concrete block for sidewalks made by washing out aggregate from the surface layer by spraying a water stream, wherein one nozzle sprays the water stream diagonally onto the surface of the surface layer, and the other nozzle is spaced apart and sprays the water stream diagonally from the opposite direction. A device for washing out sidewalk blocks.