JP2002004213A - Method and device for repairing asphalt pavement board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new repair method and device capable of efficiently repairing a damaged part by a small number of workers without producing noise, vibration or dust. SOLUTION: After an asphalt oil conversion agent is permeated in the damaged part of an existing asphalt pavement board, the adhesion of an existing asphalt pavement board and a new asphalt mixture is enhanced by heating the permeated part and flatly laying, rolling and compacting the new asphalt mixture on the heating part, and repair without a peeling and passing-through level difference can be highly efficiently performed.

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 repairing an asphalt pavement slab, and more particularly to a method and an apparatus for repairing a damaged portion of an existing asphalt pavement plate at low cost.

[0002]

2. Description of the Related Art When cracks or irregularities occur on an existing asphalt paving slab, a new asphalt mixture is laid at the corresponding location by breaking, scraping or cutting the damaged portion, and then flattening. It was rolling.

[0003] However, demolition, scraping, or cutting of a damaged portion involves generation of noise, vibration, or dust, and furthermore, it is necessary to continuously perform each process with an independent device (working vehicle). For this reason, there is a problem in that a skilled operator is required for each work vehicle, and equipment and personnel burdens are increased, and repair costs are increased.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has been developed to enable a small number of people to efficiently repair a damaged portion without generating noise, vibration or dust. An object of the present invention is to provide a simple repair method and apparatus to increase construction efficiency and reduce repair costs.

[0005]

Means taken by the present invention to solve the above-mentioned problems is to heat the permeated portion after permeating the asphalt oil agent into the damaged portion of the existing asphalt pavement plate, and to heat the permeated portion to the heated portion. The new asphalt mixture is laid flat and compacted.

In the apparatus according to the present invention, a hopper for temporarily storing the new asphalt mixture, a conveying means for dropping and supplying the new asphalt mixture taken out from the hopper to the heating location, and an asphalt oiling agent sprayed in advance. The traveling undercarriage is provided with a heater for heating the damaged portion of the existing asphalt pavement plate and the new asphalt mixture conveyed by the conveying means, and a blade screed for flattening the new asphalt mixture dropped and supplied from the conveying means. And

It is desirable that the conveying means is constituted by a ladder-type belt conveyor in which the return path from the dropper to the hopper is disposed below the forward path from the hopper to the dropper.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. In the drawing, (1) shows an asphalt pavement plate repairing apparatus according to the present invention, and a hopper (4) for temporarily storing a new asphalt mixture is provided at the front of a traveling chassis (3) provided with heat-resistant wheels (2). It is installed. A screw (5) extending in the vehicle width direction and a blade screed (7) formed by a blade (6) controlled to move up and down are provided at a rear portion of the traveling chassis (2), and a feed port of the hopper (4) and a screw conveyor (5) are provided. Conveying means by ladder type belt conveyor immediately before
The asphalt mixture discharged from the hopper (4) is dropped and supplied to a portion immediately before the screw (5).

When the return path of the ladder-type conveyor constituting the transfer means (8) is arranged below the forward path as in the embodiment, the new asphalt mixture that has been conveyed is discharged so as to be thrown downward. In addition, the new asphalt mixture is prevented from being scattered upward by splashing at the drop opening.

A guide plate (9) for forming a bottom wall (transport surface) of the forward path of the transport means (8) is made of a heat-resistant metal plate,
By arranging burners (11) on both sides of a space (10) formed between the lower surface of the guide plate (9) and the surface (road surface) of the existing asphalt pavement plate, signals from a control unit (not shown) can be obtained. By operating the burner (11), the guide plate (9) and the road surface can be heated. Therefore, the new asphalt mixture taken out of the hopper (4) and conveyed backward is subjected to a heat treatment while being conveyed by the conveying means (8), and then dropped and supplied to the heat-treated road surface. A wire mesh (12) is provided below the burner, and the heating of the road surface is performed by secondary heating using a wire mesh heated by the burner, thereby preventing the existing asphalt pavement plate from firing.

On the other hand, the new asphalt mixture dropped and supplied from the conveying means (8) to the road surface is supplied to the screw (5)
After being spread right and left with, the blade (7) is drawn flat. (13) Sprayer that sprays asphalt oil agent on the damaged part of the existing asphalt pavement plate,
(14) is a pressure roller.

In the asphalt pavement plate repairing apparatus having the above-described configuration, when repairing a damaged portion of the existing asphalt pavement plate, the asphalt oiling agent is sprayed and permeated into the corresponding portion using the sprayer (13).

Next, the new asphalt mixture loaded on the dump truck (15) or the like is charged into the hopper (4), and each part of the repair device is operated while being advanced. Then, the new asphalt mixture temporarily stored in the hopper (4) is gradually conveyed backward on the guide plate (9) by the conveying action of the conveying means. In addition, in order to receive the heating action of the burner (11) in this transporting process, the new asphalt mixture is dropped and supplied to the repair site while the temperature is sufficiently increased, and is flattened by the blade screed (7), and is compacted. Rolled by rollers (14).

At this time, the new asphalt mixture is dropped and supplied to the heated repair site with the asphalt oil agent being sprayed beforehand, so that the adhesion between the new asphalt mixture and the existing asphalt pavement plate increases, and the new asphalt mixture is peeled off. A flat pavement surface without rubbing steps can be obtained.

Therefore, the damaged portion is broken down as in the prior art,
Since there is no need to scrape or cut, there is no noise, vibration or dust associated with the repair work, and it is possible to continuously perform a series of operations from heating to laying a new asphalt mixture. As a result, the number of work steps and cost can be reduced.

Although the ladder-type belt conveyor constitutes the conveying means and the burner constitutes the heater in the embodiment, the constitutions of the conveying means and the heater are not limited to those of the embodiment. . In the embodiment, an independent sprayer is used. However, a sprayer can be mounted on the front end of the traveling chassis as needed.

[0017]

According to the repairing method of the present invention, the damaged portion can be repaired accurately without breaking, scraping or cutting. According to the repair device of the present invention, the new asphalt mixture can be flattened to the corresponding portion while the repair portion and the new asphalt mixture are overheated, so that the man-hour and cost of the repair work can be reduced. Can be.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an embodiment of a repair device according to the present invention.

FIG. 2 is a side view showing the internal configuration of the repair device shown in FIG.

FIG. 3 is a schematic sectional view of the repair device shown in FIG. 1;

[Explanation of symbols]

 (1) Repair equipment (2) Heat-resistant wheels (3) Travel chassis (4) Hopper (5) Screw conveyor (6) Blade (7) Blade screed (8) Transport means (9) Guide plate (10) Empty space (11) ) Burner (12) Wire mesh (13) Sprayer (14) Rolling roller (15) Dump truck

Claims (3)

[Claims] Claims 1. An infiltration part is heated after infiltrating an asphalt oiling agent into a breakage point of an existing asphalt pavement plate,
A method for repairing an asphalt pavement slab, characterized in that a new asphalt mixture is laid flat on a heated portion and compacted. 2. A hopper for temporarily storing a new asphalt mixture, a conveying means for supplying the new asphalt mixture taken out of the hopper to the heating location, and a damaged portion of an existing asphalt pavement to which an asphalt oiling agent has been sprayed in advance. And a heater for heating the new asphalt mixture conveyed by the conveying means and a blade screed for flattening the new asphalt mixture dropped and supplied from the conveying means on a traveling undercarriage, the asphalt pavement plate repairing apparatus. 3. The asphalt pavement plate repairing device according to claim 2, wherein the conveying means is constituted by a belt conveyor provided with a return path from the dropping port to the hopper below a forward path from the hopper to the dropping port. apparatus.