JP3455478B2 - Emulsion spraying method and emulsion spraying device - Google Patents

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 that can be used in a paving machine such as an asphalt finisher.

[0002]

2. Description of the Related Art Generally, in the case of paving a road by using a paving machine such as an asphalt finisher, in order to enhance the adhesion (adhesion) force between the base and the asphalt mixture, the asphalt mixture is preliminarily applied to the base surface on which emulsion is sprayed. I try to spread the material and spread it.

[0003]

By the way, a vehicle traveling on a road is more likely to travel in a central portion than in an end portion of a lane, and the road is frequently subjected to a traffic load at this portion. Moreover, even in this central portion, the portion through which the tire of the vehicle passes receives the traffic load more frequently. However, in the above-mentioned conventional one, since the emulsion was uniformly dispersed irrespective of the edge and center of the base, the adhesive force between the asphalt mixture and the base was about the same on the entire road. However, on the paved road, the load concentrates on the portion that is frequently subjected to the traffic load, and as a result, the adhesion between the asphalt mixture and the base is damaged in this portion at an early stage, and the paved surface is peeled off, etc. However, there is a problem that the strength 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 circumstances in order to solve these problems, and the first invention is to pave an emulsion. When the emulsion is sprayed on the substrate, the emulsion spraying method is characterized in that the emulsion is sprayed in a larger amount in a portion that is frequently subjected to traffic load than in a portion that is not frequently received. The second invention provides a spray device for spraying the emulsion on a substrate for paving, wherein the spray device is configured to spray a larger amount of a portion that is frequently subjected to a traffic load than a portion that is not frequently received. It is an emulsion spraying device characterized by being used. With these, it is possible to strengthen the bond between the asphalt mixture and the base of the pavement part that is frequently subjected to traffic loads.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. In the drawings, 1 is a paving machine for drainage pavement, which is a paving machine 1 on which a highly adherent emulsion is sprinkled on a water-impermeable base, and a porous asphalt mixture having a high porosity is formed thereon. A material (hereinafter, simply referred to as a composite material) is laid, and this material includes left and right crawler type traveling bodies 2, a hopper 3 arranged in the front part of the machine body, the hopper 3
A bar conveyor (bar feeder) 4 that conveys the mixture fed to the rear of the machine, an emulsion spraying device 5 described below for spraying the emulsion onto the base, and an emulsion spraying the mixture transported by the bar conveyor 4 above. Screw conveyor (screw spreader) to spread evenly on the base
6. Various member devices such as a screen device 7 arranged behind the screw conveyor 6 for laying a mixed material are provided.
The screen 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 device 5 has 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 up and discharging the emulsion, and an emulsion for spraying the emulsion on a substrate. The front and rear spray parts 11, 12, which will be described later,
It is composed of member devices such as the emulsion pipe 13.

The front and rear spray sections 11 and 12 have spray nozzles 11a and 12a, respectively, which are arranged at a predetermined interval so that emulsion spray can be carried out from the spray nozzles 11a and 12a. It is connected to a nozzle control mechanism (not shown) and is controlled to open and close in response to a control command from the control mechanism. Further, in the present embodiment, the front spray portion 11 is used for overlapping spraying, and the portion A that frequently receives the traffic load due to this overlapping spraying.
A large amount of is sprayed. The front and rear spray parts 11 and 12 are divided into left and right parts with the center of the left and right of the vehicle as a reference, and the left and right parts are arranged in front and rear positions. When the paving work is performed, the work posture is expanded to the left and right as shown in FIG.
It is configured to be movable left and right so that 2 can be accommodated within the machine width, but the details thereof will be omitted.

In the structure constructed as described above, the paving machine 1 sprays the emulsion on the base by the emulsion spraying device 5, and at the same time, mixes the mixture fed into the hopper 3 by the bar conveyor 4 to the rear of the machine. Then, it is spread evenly by the screw conveyor 6 on the base on which the emulsion is sprinkled, and spread by the screen device 7. In this case, the emulsion is to be sprayed from the front and rear spray parts 11 and 12. However, the front spray part 11 is to spread the emulsion over the part A which is frequently subjected to traffic load. As a result, a pavement in which the adhesive force between the base material and the composite material in the portion is increased, and the life of the road can be extended.

Incidentally, the present invention is not limited to the above-mentioned embodiment, and as a mode for carrying out a large amount of spraying, as shown in FIG. 4, the front spray section 13 is a road width emulsion spraying,
The rear spray unit 14 may be used for overlapping spraying. Further, as shown in FIG. 5, the spray unit 15 for spraying a large amount and the spray unit 16 for normal spraying may be concentrated, for example, only on the rear side. It can also be configured. In this structure, the spray unit 16 for normal spraying and the spray unit 15 for large-volume spraying are arranged so as to deviate in the front, rear, left, and right directions. is there. Further, by increasing the emulsion discharge pressure or the nozzle diameter of the portion to be sprayed in large amounts, the spraying amount from the nozzles is adjusted to be large, or as shown in FIG. A large amount can be sprayed by adjusting the spray amount by making it narrow. Further, it goes without saying that the parts to be sprayed in large amounts can be variously set according to various conditions such as the width of the road and the lane.

[Brief description of 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 dispersion.

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

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

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

[Explanation of symbols]

1 paving machine 2 left and right running bodies 4 bar conveyor 5 Emulsion spraying device 11 Front spray section 12 Rear spray section

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E01C 19/17 E01C 19/48

Claims (2)

(57) [Claims] 1. An emulsion characterized in that, when the emulsion is sprayed on a pavement base, the emulsion is sprayed in a larger amount than a site that is frequently subjected to traffic load, rather than a site that is not frequently subjected to traffic load. Dispersion method. 2. In providing a spray device for spraying an emulsion onto a substrate for paving, the spray device comprises:
An emulsion disperser characterized by being set so as to disperse a larger amount of a portion that receives a heavy traffic load than a portion that does not receive a heavy traffic load.