JPH07304023A - Method and device for disposing residual ready-mixed concrete - Google Patents

Abstract

PURPOSE:To granulate ready-mixed concrete by a conveyor system using a simple device by a method wherein a rod body is provided on a bedplate provided with a large number of recesses and projections over the full surface thereof, a sheet is placed thereon in a belt conveyor form, ready-mixed concrete is casted therein, the concrete in a semi-cured state is divided by the horizontal motion of the rod body, and the conveyor is driven. CONSTITUTION:A rod body 2 that can move horizontally reciprocatively is provided on a bedplate provided with a large number of rollers 1 arranged in parallel to each other. Thereon, a sheet 3 reflecting the unevenness formed by the rollers is so placed as to be driven in a belt conveyor form. An erected part 4 a part of which can be removed is peripherally formed in a shallow box form. Ready-mixed concrete 5 is casted on the sheet 3 forming the shallow box-form container all over the bottom surface thereof. When the concrete is semi-cured, the rod body 2 is horizontally moved to divide the concrete. After that, rollers 1A are lowered in a horizontal state, and the conveyor is driven to carry and dispose the divided concrete.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for treating residual raw concrete produced in a ready-mixed concrete plant by granulating it.

[0002]

2. Description of the Related Art While so-called ready-mixed concrete plants produce a large amount of ready-mixed concrete, a residue often occurs in relation to needs. Since this residual fresh concrete cannot be illegally discarded and hardened, it is usually crushed by a crusher after being hardened in the factory, and changed into a gravel stone-like material called a crusher run to make a civil engineering material. Was being processed.

[0003]

The crushing of the concrete mass after hardening in this way requires a large device and energy, and it requires a great deal of cost and problems such as noise, vibration and dust. I was holding. An object of the present invention is to solve such a problem.

[0004]

A rod-shaped body (2) capable of reciprocating horizontal motion is placed on a table on which a large number of irregularities are formed, preferably a table on which a large number of rollers (1) are installed in parallel.
A sheet (3) on which irregularities (by rollers) are reflected is placed so as to be driven like a belt conveyor, and a (at least) partially removable upright (4) is provided around it. It is provided in the shape of a shallow box and has this as the basic structure of the device. The concrete (5) is poured onto the sheet (3) forming a shallow box-shaped container so as to spread over the entire bottom surface, and when it is semi-cured, it is rod-shaped. The body (2) is horizontally moved to divide it, part of the rising (pointing to the front) is removed, the conveyor is driven, and the divided concrete (6) is transported outside the conveyor to be transported and processed. It is a thing.

The rollers (1), the sheets (3), etc. in the "parallel installation" here basically have the same form as the conventional belt conveyor, and the rising (4)
In the case of providing a roller, the rollers (1A) at the front and rear ends are made to be rotatable up and down as shown in the drawing before and after the driving direction of the conveyor, and when making a shallow box shape, as shown in FIGS. 1 and 2. When the divided concrete (6) is conveyed, the concrete (6) may be lowered horizontally to apply tension to the sheet (3) and driven as shown in FIG. In addition, a plate-shaped body (not shown) is attached to the left and right in the driving direction, for example, via a rotatable hinge.

Further, the rod-like body (6) may have a shape substantially similar to that of the roller (1), but it is preferable to form a protrusion such as the ring-shaped rib (7) illustrated in FIG. The reciprocating horizontal movement of the rod-like body (2) can be easily performed by, for example, rotating wheels attached to both ends of the shaft on rails provided on both sides of the table conveyor. Therefore, if this is set so as to interlock with a motor, a sensor, a timer, etc., it can be automated.

The thickness of the ready-mixed concrete (5) to be poured is not particularly limited, but corresponds to about 1 to 15 cm,
Usually, it is performed at about 7 cm. The "semi-hardened" state means the degree to which the hydraulic reaction of the green concrete (5) progresses to lose the fluidity, and moreover, the finger-hardened state is not reached. Usually, this state is reached within half a day. At that time, it is desirable that the horizontal movement of the rod-shaped body (2) is slowly performed a plurality of times.

[0008]

When the sheet (3) is laid on the table on which a large number of irregularities are formed as described above, the irregularities are reflected on the table, so that the bottom surface of the poured concrete (5) is also irregular. When the rod-shaped body (2) under the sheet (3) is moved horizontally in a semi-hardened state, the semi-hardened ready-mixed concrete (5) forcibly lifted as shown in FIG. Cannot be maintained, and countless cracks are generated, resulting in concrete (6) divided into pebbles. Repeat this several times, and after reaching a sufficient state of separation, rotate the rollers (1A) at the front and rear ends as shown in FIG. 3 to lower them until they become horizontal, apply tension to the sheet, and drive the conveyor The removed concrete (6) can move forward and be carried out to the outside.

[0009]

Example A metal roller (1) having a diameter of 6 cm and a length of 2 m is installed in parallel at intervals of 10 cm to form a conveyor having a length of 5 m, and a guide rail and a height of 20 cm on both sides thereof.
Of the roller (1) with a diameter of 15 cm, which is driven at the front and rear ends, is installed at the front and rear ends of a rotating arm (8) having a length of 15 cm. A rod-shaped body (2) with a diameter of 6 cm and a length of 2.2 m is provided on the guide rails on both sides so that small wheels can be placed so that it can be moved in a non-contact and reciprocating horizontal back and forth direction, and a strong and smooth surface is provided on it. It is surrounded by a plastic sheet (3) with a belt conveyor, and the rollers (1A) at the front and rear ends and rising plates are raised to form a shallow box, and then pouring fresh concrete (5) and leveling it by vibration etc. The thickness is 7 cm. After 12 hours, or by the sensor, the rod-shaped body (2) is moved at a speed of 10 cm / sec.
Reciprocate 3 times with the
A) and the rising plate are lowered horizontally to drive the sheet (3), and the concrete (6) that has been divided above is carried forward.

In addition, when installing such an apparatus three-dimensionally, the lower one should be shifted rearward so that the ready-mixed concrete (5) can be poured more easily.

[0011]

As described above, according to the present invention, a large amount of residual concrete that is produced in a ready-mixed concrete plant and is difficult to process can be granulated by flow work without the need for a large-scale crusher, thus saving energy. It has a great effect on environmental protection.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention.

FIG. 2 is a side sectional view showing another embodiment of the present invention.

FIG. 3 is a side sectional view showing still another embodiment of the present invention.

FIG. 4 is a sketch of an example of one component used in the present invention.

[Explanation of symbols]

1 ………… Roller 1A ………… Roller at the front and rear ends
2 ……… Rod-shaped body 3 ……… Sheet 4 ……… Stand up 5 ……
… Raw concrete 6 ……… Divided concrete 7 ……… Ring-shaped rib 8 ……… Rotating arm

Claims (2)

[Claims] 1. A bar-shaped body capable of reciprocating horizontal movement is provided on a table on which a large number of concavities and convexities are formed, and a sheet on which the concavities and convexities are reflected is placed so as to be driven like a belt conveyor. Providing a rise in the shape of a shallow box around it,
Pouring ready-mixed concrete into it so that it spreads over the entire bottom surface, and splitting it by horizontally moving the bar when it is semi-cured, removing the rising part and driving the conveyor to carry and process the split concrete. A method for treating residual ready-mixed concrete. 2. A plurality of rollers are installed in parallel, a rod-shaped body capable of reciprocating horizontal movement is provided on the roller, and a sheet on which irregularities due to the rollers are reflected is placed so as to be driven like a belt conveyor. The treatment equipment for the residual fresh concrete is characterized in that a partially removable stand is provided around it in the shape of a shallow box.