JP3040951B2 - Asphalt mixture leveling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leveling machine such as an asphalt finisher, a repaver or a remixer for spreading an asphalt mixture on a lower road surface.

[0002]

2. Description of the Related Art Asphalt mix is used as a leveling machine to spread an asphalt mix on an unpaved roadbed, an asphalt pavement, a cut surface thereof, a concrete pavement, or the like, and is used for a traveling vehicle. A hopper to contain, an asphalt mixture delivery device, an emulsion spray nozzle, and a screed are provided. The asphalt mixture is delivered from the hopper by the spray nozzle while the emulsion is sprayed on the lower road surface, and the lower layer surface is used by the device. Is spread on a spray emulsion and spread with a screed (Japanese Patent Laid-Open No. 4-20300).
No. 6, U.S. Pat. No. 5,069,578).

[0003] According to the above leveling machine, an asphalt distributor (for example, a dedicated sprayer of emulsion)
Asphalt pavement can be performed at low cost comprehensively without using Japanese Utility Model Publication No. 1-1775).

[0004]

However, the above-mentioned conventional asphalt mixture leveling machine has only an emulsion spray nozzle and auxiliary equipment such as a pump and an emulsion tank for pumping the emulsion to the nozzle. If the lower road surface is damp due to rainfall, etc.
The disadvantage is that the quality of the pavement is significantly reduced, so that the work has to be extended or interrupted until the lower road surface is dry. This is the same in a general asphalt finisher or the like having no emulsion spray nozzle.

An object of the present invention is to provide an asphalt mixture leveling machine capable of performing leveling work by removing moisture even when the lower road surface is wet due to rainfall or the like. I do.

[0006]

In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that the emulsion is added to the lower layer of the running vehicle.
A spray nozzle for spraying on a road surface;
Emulsion provided behind and sprayed by the spray nozzle
Over, the delivery system gives Ri feed delivery unit or al the asphalt mixture, the asphalt mixture to smooth laying asphalt mixture fed onto the emulsion screed is provided by said transmission out device insole In the leveling machine, the above spray
A configuration was provided in which a water removing means for removing water on the lower layer road surface was provided in front of the nozzle .

[0007] As the moisture removal means, a scraper for removing paying wipe the suction nozzle and the water is removed by sucking the moisture alone Moshiku can be used by 併.

Further, the suction nozzle is provided in front of the scraper.
May be provided at the back .

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. 1 to 3 show an embodiment of a machine for spreading asphalt mixture according to the present invention.
This leveling machine is an asphalt finisher. A self-propelled traveling vehicle 1 includes a hopper 2 containing an asphalt mixture A, an asphalt mixture delivery device 3, and an emulsion (asphalt) spray nozzle 4. , Screed 5
The asphalt mixture A is sent out from the hopper 2 onto the sprayed emulsion on the roadbed 6 by the spraying device 3 and the screed 5
It is configured to be spread out.

The delivery device 3 includes a bar feeder 3a for carrying out the asphalt mixture A from the hopper 2, and a spreader for spreading the asphalt mixture carried by the bar feeder 3a in the width direction of the traveling vehicle 1 and sending the asphalt mixture onto the roadbed 6. And a dengue screw (delivery unit) 3b. The spray nozzle 4 and the screed 5 are respectively provided as a pair of left and right sides, which are extendable and retractable in front and rear, so that the spray width of the emulsion and the spread width of the asphalt mixture A can be arbitrarily adjusted. I have. The traveling vehicle 1 in the figure is a crawler type, but there is also a wheel type.

The spray nozzle 4 has a duct structure and is provided immediately before the spreading screw 3b, and a suction nozzle (water removing means) 10 also having a duct structure is provided immediately before the spray nozzle 4. The suction nozzle 10 suctions and removes water W from the roadbed 6 from a number of nozzle ports on the lower surface, and is connected to a cyclone-type water / water separator 12 by a flexible suction hose 11. The steam separator 12 separates the water sucked by the suction nozzle 10 into a collection tank 13, and is connected to a blower unit 15 via a filter 14.

Like the spray nozzle 4, the suction nozzle 10 is provided so as to be able to expand and contract in a pair of right and left and front and rear directions. The outer ends of the spray nozzle 4 and the suction nozzle 10 are connected to the side plate 8 of the screed 5 (omitted in FIG. 1).
And it expands and contracts with the screed.

In the asphalt finisher configured as described above, before the spray nozzle 4 sprays the emulsion on the roadbed 6, the suction nozzle 10 sucks and removes the water on the roadbed 6. Therefore, even if the roadbed 6 is wet due to rainfall or the like, the moisture can be removed by the suction nozzle 10 and the work of spreading the asphalt mixture A can be performed without any trouble.

FIG. 4 shows an example in which the hot air jet nozzle 20 is used as a water removing means. The basic structure of the leveling machine main body is the same as that of the leveling machine shown in FIGS. The jet nozzle 20 has a duct structure.
2 are connected. And the burner 22 has a blower 23
Are communicated, and the hot air generated by the burner 22 is
To the ejection nozzle 20 through the ejection port 20a on the lower surface.
, The water W on the roadbed 6 can be removed by heat and wind. Reference numeral 24 denotes a fuel tank of the burner 22.

Also in the embodiment shown in FIG. 4, the work on the asphalt mixture can be spread by removing the water on the roadbed 6.

In the water removing means shown in FIG.
In the case where only the blower 23 is actuated with the blower 2 stopped, air at normal temperature is blown out toward the roadbed 6 from the blowout hole 20a of the blowout nozzle 20, and the water W of the roadbed 6 is blown off by the blown air. Removed. At this time, the nozzle 20
Functions as a jet nozzle for air, and enables leveling of asphalt mixture.

FIG. 5 shows an example in which a heater 30 such as a burner is used as a means for removing moisture. Also in this example, the structure of the leveling machine main body is the same as that of the leveling machine shown in FIGS. . The heater 30 evaporates and removes the water W with heat such as a flame. Therefore, even in this example, leveling work is possible. Although the heater 30 shown in the drawing has a structure in which the flame directly contacts the roadbed 6, the heater 30 may be a heater that does not allow the flame to contact the roadbed 6, a heater that does not emit flame, or the like.

FIG. 6 shows an example in which a scraper 40 using a sponge roller is used as a moisture removing means, and FIG. 7 shows an example in which a scraper 50 using a brush roller is used as a moisture removing means. Both scrapers 40 and 50 are, for example,
The motor provided on the end plate 8 is rotated clockwise in FIG. 6 and FIG.
The water W above is eliminated, and the asphalt mixture can be spread. Also in these examples, the structure of the leveling machine main body is the same as that of the leveling machine of FIG. 1 and FIG.

Although the scrapers 40 and 50 shown in FIGS. 6 and 7 have a roller structure, they may have a flat plate structure such as a wiper.

In the present invention, two or more suction nozzles 10, hot air or air jet nozzles 20, heaters 30, and scrapers 40 and 50 as water removing means can be provided.

More specifically, for example, if at least one of the suction nozzle 10, the hot air or air jet nozzle 20 or the heater 30 is provided after the scraper 40 or 50 in the above order, the moisture is removed by the scraper 40 or 50. Since it is roughly removed and is finally removed by the subsequent suction nozzle 10 or the like, it is possible to efficiently remove moisture.

Further, when the suction nozzle 10 is disposed in front of the scrapers 40 and 50, the water that has been scraped by the scrapers 40 and 50 can be efficiently sucked by the suction nozzle 10. Further, if one or both of the hot air or air ejection nozzle 20 and the heater 30 are provided after the scrapers 40 and 50, the water is finish-removed by them, so that the water can be more completely removed.

In the case where the water is blown off toward the suction nozzle 10 by the hot air or air ejection nozzle 20 and the water is sucked by the succeeding or preceding suction nozzle 10, the water can be efficiently removed. . If a heater 30 is provided after them, the removal of water becomes more complete. The water removing means is a hot air jet nozzle 20 or a heater 3
In the case of 0, the roadbed 6 is heated by them,
The permeability of the emulsion sprayed by the spray nozzle 4 to the roadbed 6 is improved.

The specific structure of the nozzles 4, 10, 20 is arbitrary, and is not limited to the two-stage telescopic structure of the embodiment shown in FIG.
It may be a three-stage or more stretchable structure, and in some cases, may be a structure that cannot expand or contract. Nozzles 4, 10, 2
In the case where 0 is made expandable and contractible, one of the nozzle openings (ejection holes 20a) that can be polymerized in the contracted state is usually made openable and closable with a shutter, a valve, or the like, and one of the polymerization openings is closed to close the emulsion. And uniform removal of water over the entire width of the nozzles 4, 10, 20. As described above, the case where the asphalt mixture is spread on the unpaved roadbed 6 as the lower road surface has been described, but the same level is similarly spread on the lower road surface such as the asphalt pavement, the cut surface thereof, and the concrete pavement. Can be implemented.

The present invention can be practiced on a leveling machine in which the emulsion spray nozzle 4 is not provided. Asphalt is mainly used in a molten state for the emulsion which is sprayed by the spray nozzle 4 to form a waterproof / adhesive layer (bonding layer), but in the present invention, the type and blending ratio of the emulsion or the amount of spraying is arbitrary. is there. Further, the present invention can be applied to a leveling machine other than the asphalt finisher, for example, a repaver or a remixer.

[0026]

As described above, according to the asphalt mixture leveling machine of the present invention, the emulsion is added to the lower layer of the traveling vehicle.
A spray nozzle for spraying on a road surface;
Emulsion provided behind and sprayed by the spray nozzle
Over, the delivery system gives Ri feed delivery unit or al the asphalt mixture, the asphalt mixture to smooth laying asphalt mixture fed onto the emulsion screed is provided by said transmission out device insole In the leveling machine, the above spray
Since the water removing means for removing the water on the lower road surface is provided in front of the nozzle, even if the lower road surface is wet due to rainfall or the like, the water is eliminated to spread the asphalt mixture. Work can be done. Therefore, even during rainfall, as long as the processing capacity of the water removal means is not exceeded, the leveling work is started without waiting for the lower road surface to dry naturally, and even if there is a small amount of rainfall during the work, There is an effect that the pavement can be completed in a short time without impairing the quality by continuing the work.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of an asphalt mixture leveling machine according to the present invention.

FIG. 2 is a plan view of the leveling machine of FIG. 1;

FIG. 3 is a diagram showing a relationship between a suction nozzle, a steam separator, and the like.

FIG. 4 is a partially broken view showing a relationship between a hot air or air jet nozzle, a burner, and the like.

FIG. 5 is a diagram of a heater.

FIG. 6 is a diagram of a scraper using a sponge roller.

FIG. 7 is a diagram of a scraper using a brush roller.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 traveling vehicle 3 delivery device 3a bar feeder 3b spreading screw (delivery portion) 4 spray nozzle 5 screed 6 roadbed (lower road surface) 10 suction nozzle 20 hot air or air ejection nozzle 30 heater 40,50 scraper A asphalt mixture W moisture

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuyoshi Sato 730, Gunma-cho, Gunma-gun, Gunma Prefecture Inside the Takasaki Plant of Niigata Iron Works Co., Ltd. (72) Inventor Toru Saito 1-19-11 Kyobashi, Chuo-ku, Tokyo Japan Intraway Co., Ltd. (72) Inventor Takayoshi 1-19-11 Kyobashi, Chuo-ku, Tokyo Japan Intro. (56 ) References JP-A-10-46521 (JP, A) JP-A-48-58624 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E01C 19/48

Claims (5)

(57) [Claims] 1. Spraying the emulsion on the lower road surface on the running vehicle
A spray nozzle, provided behind the spray nozzle
Te, on the emulsion that is sprayed by the spray nozzle, bedding and delivery system gives Ri feed delivery unit or al the asphalt mixture, an asphalt mixture fed onto the emulsion by said transmission out device leveled An asphalt mixture leveling machine provided with a screed, wherein a water removing means for removing moisture on a lower layer road surface is provided in front of the spray nozzle. . 2. The asphalt mixture leveling machine according to claim 1, wherein the water removing means is a scraper for wiping and removing the water. 3. The leveling machine for asphalt mixture according to claim 1, wherein the moisture removing means is a suction nozzle for sucking and removing moisture. 4. The water removing means wipes and removes the water.
And a suction nozzle that sucks and removes moisture
According to claim 1, characterized in that it consists of asphalt mixture laid leveling machine. 5. A suction nozzle is provided before or after a scraper.
5. The leveling machine for asphalt mixture according to claim 4, wherein the leveling machine is provided in a filter .