JP2001081713A - Method and device for spraying emulsion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the adhesion of the base of a pavement part frequency receiving traffic load and an asphalt mixture by largely spraying emulsion on the part frequently receiving the traffic load. SOLUTION: The emulsion spraying device of a paving machine 1 for drainable pavement is provided with before and behind spray parts 11, 12, and respective spray nozzles 11a, 12a are provided at prescribed intervals. The front side spray part of the two spray parts 11, 12 is used for double spraying, and the large amount of emulsion on the part frequently receiving the traffic load is sprayed. The before and behind spray parts 11, 12 are divided right and left as the right and left center of a vehicle is made a reference, and arranged by being dislocated in front and in rear. Thereby the pavement enhancing the adhesion force of the mixture of the base of the part frequently receiving the traffic load is realized, and the long service life of a road can be contrived.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of an emulsion spraying method and an emulsion spraying apparatus which can be used for a pavement machine such as an asphalt finisher.

[0002]

2. Description of the Related Art Generally, in the case of paving a road using a paving machine such as an asphalt finisher, in order to increase the adhesion (adhesion) between the base and the asphalt mixture, asphalt bonding is performed on the surface of the base on which the emulsion has been sprayed in advance. I spread the wood and spread it.

[0003]

By the way, a vehicle traveling on a road has a higher tendency to travel in a central portion than in an end portion of a lane, and the road receives a traffic load frequently in this portion. In addition, even at this central portion, the portion through which the tires of the vehicle pass receives the traffic load more frequently. However, in the above-mentioned prior art, since the emulsion was sprayed uniformly irrespective of the edge and the center of the base, the adhesive strength between the asphalt mixture and the base was almost the same over the entire road. However, on a paved road, the load acts intensively on the part that frequently receives the traffic load, and as a result, the adhesion between the asphalt mixture and the base is impaired in this part at an early stage, and the pavement surface is peeled off. However, there is a problem that the strength quality of the pavement is impaired, and there is a problem to be solved by the present invention.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has been made for the purpose of solving these problems. The first invention is to provide an emulsion for paving an emulsion. A method of spraying the emulsion, wherein the emulsion is sprayed in a larger amount on a portion where the traffic load is frequently received than on a portion where the traffic load is not frequently received. Further, in the second invention, in providing a spray device for spraying the emulsion on a substrate for paving, the spray device is configured so as to spray a portion receiving a traffic load more frequently than a portion not receiving the traffic load more frequently. An emulsion spraying apparatus characterized in that: By these means, the adhesion between the base of the pavement part which frequently receives the traffic load and the asphalt mixture can be strengthened.

[0005]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a pavement machine for drainage pavement. The pavement machine 1 sprays a highly adherent emulsion on a water-impermeable base, and forms a porous asphalt mixture having a high porosity thereon. A material (hereinafter, simply referred to as a composite material) is laid, and includes a left and right crawler-type traveling body 2, a hopper 3 arranged at a front portion of the machine body,
Conveyor (bar feeder) 4 for transporting the mixture supplied to the rear of the machine, an emulsion dispersing device 5 described below for dispersing the emulsion on the base, and the emulsion dispersing the mixture transported by the bar conveyor 4 Screw conveyor (screw spreader) for evenly spreading on spread base
6, various member devices such as a screw device 7 disposed behind the screw conveyor 6 to spread the mixture.
The screw device 7 is configured to be expandable and contractible in the left-right direction so that the left-right width can be adjusted according to the pavement width.

The emulsion spraying apparatus 5 includes an emulsion tank 8 for storing the emulsion, a heater 9 for heating the emulsion in the emulsion tank 8, an emulsion pump 10 for sucking and discharging the emulsion, and spraying the emulsion on a base. Spray parts 11, 12 before and after,
It is composed of member devices such as the emulsion piping 13.

In the front and rear spray units 11, 12, spray nozzles 11a, 12a are arranged at predetermined intervals so that the emulsion can be sprayed from the spray nozzles 11a, 12a. , Is connected to a nozzle control mechanism (not shown), and is configured to be opened and closed in response to a control command from the control mechanism. In the present embodiment, the front spray portion 11 is used for overlapping spraying, and a portion A that frequently receives a traffic load due to the overlapping spraying is used.
A large amount of is sprayed. Each of the front and rear spray units 11 and 12 is configured to be divided into left and right with reference to the left and right center of the vehicle, and these left and right divided units are displaced in front and rear. At the time of pavement work, as shown in FIG. 3, the work posture is expanded in the left-right direction.
2 is configured to be movable left and right so that it can be accommodated within the machine width, but details thereof are omitted.

In the apparatus constructed as described above, the paving machine 1 scatters the emulsion on the base by the emulsion spraying device 5, and simultaneously puts the mixed material that has been put into the hopper 3 and conveyed to the rear of the machine by the bar conveyor 4. Then, the emulsion is uniformly spread on the substrate on which the emulsion is sprayed by the screw conveyor 6 and spread by the screw device 7. In this case, the emulsion is formed from the front and rear spray units 11 and 12, but the front spray unit 11 performs the overlapping spraying of the emulsion on the portion A that frequently receives the traffic load. As a result, a pavement having an increased adhesive strength between the base and the composite material at the site can be formed, and the life of the road can be prolonged.

Incidentally, the present invention is not limited to the above embodiment. As a mode for performing a large amount of spraying, as shown in FIG.
The rear spray section 14 may be used for overlapping spraying. Further, as shown in FIG. 5, the spray section 15 for spraying a large amount and the spray section 16 for normal spraying may be concentrated only on the rear side, for example. It can also be configured. And in this thing, since the spraying part 16 for normal spraying and the spraying part 15 for large amount spraying are arranged so as to be inconsistent in front, rear, left and right, there is an advantage that compact arrangement can be performed while having both spraying parts 15,16. is there. Further, by increasing the emulsion discharge pressure and the nozzle diameter of the portion to be sprayed in a large amount so as to adjust the spraying amount from the nozzle to be large, and as shown in FIG. A large amount of spraying can also be performed by adjusting the amount of spraying by narrowing the width. In addition, it goes without saying that various parts such as a road width and a lane can be variously set according to various conditions such as a road width and a lane.

[Brief description of the drawings]

FIG. 1 is a side view of a paving machine.

FIG. 2 is a side view of the emulsion spraying device.

FIG. 3 is a first pattern diagram of emulsion spraying.

FIG. 4 is a second pattern diagram of emulsion spraying.

FIG. 5 is a third pattern diagram of emulsion spraying.

FIG. 6 is a fourth pattern diagram of emulsion spraying.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pavement machine 2 Left and right running body 4 Bar conveyor 5 Emulsion spraying device 11 Front spray part 12 Rear spray part

Claims (2)

[Claims] 1. An emulsion characterized in that, when the emulsion is sprayed on a base for paving, the emulsion is sprayed in a larger amount than in a region where traffic load is frequently received than in a region where traffic load is not frequently received. Spray method. 2. In providing a spray device for spraying the emulsion on a substrate for paving, the spray device comprises:
An emulsion spraying apparatus characterized by being set so as to spray a portion receiving traffic load more frequently than a portion receiving traffic load less frequently.