JP5191063B2 - Asphalt finisher - Google Patents

Description

  The present invention relates to an asphalt finisher for laying and solidifying an asphalt mixture which can be cured at room temperature by reacting with water or the like at a place where asphalt pavement such as a road is performed.

In general asphalt finishers, a heated asphalt mixture is received by a hopper, transferred backward by a feeder, and spread and spread in a width direction by a screw spreader.
However, the asphalt finisher according to the present invention is for laying and solidifying an asphalt mixture capable of normal temperature construction on a road or the like. For this reason, the conventional asphalt finisher could not be used.

JP 2006-138090 A

However, such a conventional asphalt finisher is based on the premise that the heated asphalt mixture is spread and solidified, and there is no device for spraying water or a curing accelerator on the asphalt mixture.
For example, the conventional asphalt finisher disclosed in Patent Document 1 is a device that combines a grout material filling device that fills a pavement surface with a grout material filling device and an asphalt finisher that spreads and solidifies the asphalt, and is used for an asphalt mixture of a room temperature construction type. I couldn't.
This invention is proposed in view of the said situation, and it aims at providing the asphalt finisher which can be used for a normal temperature construction type asphalt mixture.

In order to achieve the above object, the present invention provides a hopper for loading an asphalt mixture, a feeder conveyor for conveying the loaded asphalt mixture and dropping it on a pavement surface, and a screw for diffusing the asphalt mixture dropped on the pavement surface to the left and right. An asphalt finisher comprising a spreader, a liquid supply device for sprinkling water on the asphalt mixture, and a screed device for uniformly spreading and leveling the asphalt mixture. A screed gate is provided, and the liquid supply device is disposed between the screed device and the screed gate .

  In the present invention, the asphalt mixture is a room temperature construction type heated asphalt mixture obtained by mixing asphalt, fat or fatty acid, an alkaline additive, and moisture.

In the present invention, the screed gate can move up and down .

  Since this invention consists of an above-described structure, there can exist an effect which is demonstrated below.

  In the present invention, a hopper for loading the asphalt mixture, a feeder conveyor that conveys the loaded asphalt mixture and drops it on the pavement surface, a screw spreader that diffuses the asphalt mixture dropped on the pavement surface to the left and right, and the asphalt mixture An asphalt finisher that spreads and solidifies an asphalt mixture of a room temperature construction type equipped with a liquid supply device for sprinkling water and a screed device that uniformly spreads the asphalt mixture, and the liquid supply device is disposed upstream of the screed device. Therefore, the asphalt mixture of normal temperature construction type can be laid down on a road or the like.

In the present invention, the pre-Symbol asphalt mixture, asphalt, and oil or fatty acid, and an alkaline additive, because it is cold construction type hot asphalt mixture obtained by mixing the water, can be carried out with conventional asphalt finisher It was possible to level the asphalt mixture that was not present.

Also, it is possible to adjust the holdup of laying set to asphalt mixture.

Also, it is possible to penetrate effectively moisture asphalt mixture.

FIG. 1 is an explanatory view showing an embodiment of an asphalt finisher according to the present invention. FIG. 2 is a plan view showing the asphalt finisher. FIG. 3 is a side view showing the asphalt finisher. FIG. 4 is an explanatory diagram showing a relationship between the liquid supply device, the screed gate, and the screed device in the asphalt finisher.

  An asphalt finisher of the present invention includes a hopper for loading an asphalt mixture, a feeder conveyor that conveys the loaded asphalt mixture and drops it on a pavement surface, a screw spreader that diffuses the asphalt mixture dropped on the pavement surface to the left and right, an asphalt A room temperature construction type asphalt mixture having a liquid supply device for sprinkling water on the mixture and a screed device for evenly spreading and leveling the asphalt mixture is arranged, and the liquid supply device is arranged upstream of the screed device. Therefore, the normal temperature construction type asphalt mixture can be laid effectively.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment. FIG. 1 is an explanatory view showing an embodiment of an asphalt finisher according to the present invention, FIG. 2 is a plan view showing the asphalt finisher of the present invention, and FIG. 3 is a side view showing the asphalt finisher of the present invention. Here, the asphalt finisher 10 of the present invention includes a hopper 11 for loading the asphalt mixture A, a feeder conveyor 12 for conveying the loaded asphalt mixture A and dropping it on the pavement surface, and an asphalt mixture A dropped on the pavement surface. The asphalt mixture A of a room temperature construction type comprising a screw spreader 13 that diffuses to the surface, a liquid supply device 14 that sprinkles water on the asphalt mixture, and a screed device 15 that uniformly spreads the asphalt mixture A is spread and solidified. The liquid supply device 14 is disposed on the upstream side of the screed device 15.

  The hopper 11 has a hopper wing 11a that is installed in front of the asphalt finisher 10 and that can be opened and closed by a hydraulic cylinder 11b. Asphalt mixture A is thrown into the hopper 11 which opened the hopper wing 11a from a transport vehicle such as a dump truck. The asphalt mixture A charged into the hopper 11 is conveyed to the rear of the vehicle by the feeder conveyor 12. The asphalt mixture A conveyed rearward by the feeder conveyor 12 is dropped on the pavement surface, and then spread in the pavement width direction by the screw spreader 13.

The screw spreader 13 is formed by attaching spiral screw blades 13a to the rotary shaft 13b symmetrically about the center of the finisher body. Therefore, the asphalt mixture A can be diffused in the lateral direction from the center by rotating the rotating shaft 13b.
A plate-like screed gate 16 capable of moving up and down is disposed downstream of the screw spreader 13 and functions to level the asphalt mixture A diffused in the pavement width direction to a predetermined thickness.

  A liquid supply device 14 is installed downstream of the screed gate 16 in the width direction. The liquid supply device 14 is provided with spray nozzles 14b at a predetermined interval from the water conduit 14a, and sprays water from an unillustrated water storage tank on the asphalt mixture spread by the screed gate 16. The amount of water sprayed from the spray nozzle 14b can be set in conjunction with the construction speed. A screed device 15 is installed downstream of the liquid supply device 14. The distance between the screed gate 16 and the screed device 15 is, for example, about 300 mm. Further, the screed device 15 includes a vibration device that is not shown. The vibration device includes, for example, an eccentric shaft and a motor, and vibrates the entire screed device 15.

  The screed device 15 includes a center screed 15a, a right screed 15b and a left screed 15c slidable in the left and right (width direction), and adjusts the right screed 15b and the left screed 15c according to the paving width. The width to be paved can be set.

  The asphalt mixture A used in the asphalt finisher 10 of the present invention is, for example, an asphalt mixture of a room temperature construction type formed by mixing asphalt, aggregate, fatty acid having an ester, cement or lime, By supplying moisture at the time of construction, the alkali component in the mixture is ion-decomposed and reacts with a special lubricating oil, so that a thickening effect can be obtained at room temperature.

  Next, the operation of the asphalt finisher configured as described above will be described. First, as shown in FIGS. 2 and 3, the hopper wing 11a of the hopper 11 is opened to receive the asphalt mixture A from a dump truck or the like. The asphalt mixture A charged into the hopper 11 is conveyed to the rear of the asphalt finisher 10 by the feeder conveyor 12. The asphalt mixture conveyed by the feeder conveyor 12 is diffused in the width direction of the paved surface by the screw spreader 13.

  The asphalt mixture A diffused in the width direction of the paved surface by the screw spreader 13 is roughened to a predetermined thickness by the screed gate 16 as shown in FIGS. The roughened asphalt mixture is sprinkled by the liquid supply device 14. The liquid supply device 14 can appropriately set the watering amount in conjunction with the construction speed. The asphalt mixture A supplied with water by watering can obtain a thickening effect at room temperature by ion decomposition of the alkali in the mixture and reaction with a special lubricating oil.

  The asphalt mixture A having increased viscosity is spread by the screed device 15. Further, the screed device 15 includes a vibration device, and can compact the asphalt mixture. The vibration device can promote the permeability of the additive.

  In addition, although the liquid supply apparatus demonstrated the water sprinkling apparatus comprised from the water conduit and the spray nozzle in the above description, the apparatus which sprays the hardening accelerator of liquids other than water may be sufficient.

DESCRIPTION OF SYMBOLS 10 Asphalt finisher 11 Hopper 11a Hopper wing 11b Hydraulic cylinder 12 Feeder conveyor 13 Screw spreader 13a Screw blade 13b Rotating shaft 14 Liquid supply device 15 Screed device 15a Center screed 15b Right screed 15c Left screed 16 Screed gate

Claims (3)

A hopper for loading the asphalt mixture, a feeder conveyor that transports the loaded asphalt mixture and drops it on the pavement surface, a screw spreader that diffuses the asphalt mixture dropped on the pavement surface to the left and right, and a liquid supply that sprinkles water on the asphalt mixture An asphalt finisher that spreads and hardens an asphalt mixture of a room temperature construction type equipped with a device and a screed device that uniformly spreads the asphalt mixture,
The screed device has a screed gate on the upstream side,
An asphalt finisher characterized in that the liquid supply device is disposed between the screed device and the screed gate .   2. The asphalt finisher according to claim 1, wherein the asphalt mixture is a normal temperature construction type asphalt mixture obtained by mixing asphalt, fat or fatty acid, an alkaline additive, and moisture. The asphalt finisher according to claim 1 or 2, wherein the screed gate is movable up and down.

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