JPH0517324B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a method for repairing asphalt-paved roads, in particular, a method of mixing recycled materials and new asphalt mixture (hereinafter referred to as new material) and laying it in a single layer. The present invention relates to a two-stage road surface regeneration device used in the leveling limit construction method.

[Conventional technology]

Conventional road surface regeneration equipment scrapes the road surface heated by a road heater or the like using a single scuff tire, then mixes the scraped paving material, that is, the recycled material, with new material in a mixing device and immediately applies it to the road surface. It is said to have a flat structure.

[Problem to be solved by the invention]

However, the thermal conductivity of asphalt pavement is extremely low, and in order to sufficiently heat the deep part of the road surface,
In addition to requiring a long time and a large amount of heat, there is a limit to the scraping ability of the scarifier itself, and if it is increased too much, the aggregate will be crushed into fine pieces, so the current practical scraping depth is However, there is a problem in that it is limited to 3 to 4 cm at most and cannot be scraped deeper than that.

SUMMARY OF THE INVENTION An object of the present invention is to provide a two-stage road surface regeneration device that can efficiently heat an asphalt paved road surface, scrape it efficiently and deeply, and repair it economically.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a new material hopper that receives new material supplied from a truck or the like, a new material transfer device that transports the new material placed in the new material hopper backward, and a road surface. a first scarifier for scraping up the recycled material; a first scraping device for scraping up the recycled material scraped up by the first scarifier; and a rearward transport of the recycled material scraped up by the first scraping device. and a heater for heating the road surface after the recycled material scraped by the first scarifier is scraped up by the first scraping device, at the rear of the front car. a recycled material hopper that receives recycled material sent from the recycled material transfer device of the front car; a second scarifier that scrapes the road surface heated by the heater; a second scraping device that scoops up recycled material and puts it into a recycled material hopper, and a mixing device that receives new material and recycled material sent from the new material transfer device and the recycled material hopper and mixes them. The vehicle was constructed with a rear car equipped with a rear wheel.

[Effect]

The road surface heated by a road heater or the like is scraped by the first scarifier, the recycled material is scraped up by the first scraping device, and the recycled material is sent to the recycled material hopper by the recycled material transfer device, and the reclaimed material is scraped by the first scarifier. After the material has been scraped up by the first scraping device, the road surface is heated by a heater and then heated by the second scraping device.
Scrape the recycled material with a scarifier ear and use the second
Scrape it up with a scraping device and put it into the recycled material hopper.

In addition, the new material in the new material hopper is transferred to the mixing device using the new material transfer device, and the recycled material placed in the recycled material hopper is fed into the mixing device to mix both, and then discharged onto the road surface. Spread it evenly.

〔Example〕

The attached drawings show an embodiment of the present invention, and the two-stage road surface regeneration device of the present invention consists of a car A and a rear car B. All cars A have a total of 4 cars on the front, rear, left and right sides.
It has two wheels 1 and 2 and can freely run and transport work, and a new material hopper 3 is provided at the front end to receive new material from a dump truck C running in front of the front vehicle A. There is. A new material transfer device 4 consisting of a bar feeder for transporting the material in the new material hopper 3 to the rear is provided at the front center of the car A. This new material transfer device 4 is raised up from the new material hopper 3 located at a low position to the rear of the front vehicle A. Further, in the lower part of the front vehicle A, rotary scarifiers 5 and 6 are arranged in parallel to each other, located just behind the front wheels 1 and used to loosen the pavement of the road surface. The rotary carificer 5 on the front side is configured to be able to move left and right depending on the road width, and the rotary carificer 6 on the rear side
is fixed at that position. and,
These allow the necessary width of the road to be made as wide as possible. These rotary scarifier ears 5, 6 are used to loosen the road surface heated by the road heater D running in front, and the front and rear scarifier tires 5, 6 are set to rotate in opposite directions. This is to cancel out the reaction forces received when scraping the road surface.

Further, the rotary carificer tires 5 and 6 have screw-like blades on the outer periphery, and the direction of twist of the blades is set to be opposite on the left and right sides, so that the recycled material that has been loosened by rotation is often used in the car A. The structure is such that it is concentrated in the center of the area. It should be noted that, as a matter of course, the positions of the rotary scarifiers 5 and 6 can be adjusted in the vertical direction by hydraulic cylinders (not shown), so that the depth of scraping can be adjusted. A scraping device 8 is provided behind the rotary carificer 5, 6 to scrape up the recycled material scraped by the rotary carificer 5, 6 to a recycled material transfer device 7 consisting of a bar feeder or the like. Heaters 9 and 10 are provided before and after the wheel 2.

The rear car B, like the above-mentioned full car A, has a total of four wheels 11 and 12 on the front, rear, left and right sides, and can freely run and forward work. A recycled material hopper 13a is provided to receive the recycled material sent from the material transfer device 7, and above the recycled material hopper 13a is provided a recycle material hopper 13a for receiving the new material sent from the new material transfer device 4 of the vehicle A. A new material transfer device 14 for relaying is provided, which includes a bar feeder or the like for transporting new material to the rear. At the bottom of the rear vehicle B, there are roller carifire tires 15,1 located behind the front wheels 11 for scraping the pavement of the road surface.
6 is placed. The rotary carifiers 15 and 16 are used to loosen the road surface heated by the heaters 9 and 10, and have the same structure as the rotary carifiers 5 and 6.

Also, behind Scarifiya 15 and 16,
A scraping device 17 is provided to scrape up the recycled material scraped by the scarifiers 15 and 16 to a recycled material hopper 13b provided after the recycled material hopper 13a, and a mixing device 18 is provided behind the scraping device 17. It is provided. The mixing device 18 receives the new material in the new material hopper 3 via the new material transfer devices 4 and 14, and also receives the new material in the new material hopper 13a and 13b.
The recycled material is received through the recycled material transfer device 19 and mixed together, and includes an auxiliary heater 20 that heats the new material and the recycled material. Mixing device 18
A spreading screw 21 is provided on the rear side to laterally spread the mixture mixed by the mixing device 18 and discharged onto the road surface, and further behind the spreading screw 21 is provided. A screed (leveling device) 22 is arranged to spread and compact the recycled mixture. Incidentally, as is well known, the screed 22 is supported by a leveling arm (not shown) provided so as to be able to swing freely.
Pavement thickness can be adjusted.

Thus, the symbol E is a vibrating roller, and the symbol F is a tire roller.

Next, the operation of the present two-stage meter surface layer regeneration device configured as described above will be explained.

When performing road repair work, the road heater D runs in front of the front vehicle A of this road surface regeneration device to heat the road surface. Further, a vibrating roller E and a tire roller F run behind this device to compact the road surface.

This device moves the front car A and the rear car B forward at the same working speed, and uses the rotary carifiers 5 and 6 of the front car A to pave the road surface that has been previously heated by the road heater D. Scrape it off. The scraped material is scraped up as recycled material by the scraping device 8 to the recycled material transfer device 7 and transferred to the recycled material hopper 13.
It is put into a. The road surface after the recycled material scraped up by the rotary scarifiers 5 and 6 of the front car A is scraped up by the scraping device 8 is heated by the heaters 9 and 10 of the front car A. , the recycled material is scraped by the rotary carificers 15 and 16 of the rear vehicle B, and then recycled by the scraping device 17 into the recycled material hopper 13.
b, and is scraped up by the rotary carificers 5 and 6 of the front car A and put into the recycled material hopper 13 together with the recycled material transferred through the recycled material transfer device 9 to the mixing device 18. Injected.

On the other hand, the new material is put into the new material hopper 3 from the dump truck C running in front of the front car A of this device, and then transported to the rear by the new material transfer device 4, where the recycled material is transferred to the rear car B. Mixing device 18 via transfer device 14
will be put into the

The new material and the recycled material put into the mixing device 18 in this way are heated by the auxiliary heater 20 and mixed in the mixing device 18 for a predetermined period of time to form a recycled mixture, which is then added to the road surface spreading screw 2.
It is ejected before 1. The regenerated mixture is then spread on the road surface, leveled with a screed 22, and compacted with a subsequent vibrating roller E and tire roller F. Repair work is carried out continuously using the above steps.

Examples and technical matters other than the above will be described below.

(1) It is also possible to drive the front car A and the rear car B in a connected manner.

(2) Both the front car A and the rear car B in the figure have a self-propelling function, but only one of them has a self-propelling function,
The other vehicle may be driven along with the own vehicle.

(3) It is also possible to provide a metering device in the new material transfer system and the recycled material transfer system so that the new material and the recycled material are accurately mixed at a predetermined mixing ratio.

(4) The scraping device 8 and the recycled material transfer device 7 can also be configured as one unit.

(5) As shown in the figure, connect the recycled material hoppers 13a and 13b to 2
If a stand is provided, for example, when the front vehicle A is not required, new material can be supplied from the dump truck C to the front hopper 13a for repair work.

〔Effect of the invention〕

As explained above, the two-stage road surface regeneration device according to the present invention has a new material hopper that receives new material supplied from a truck, etc., and a new material hopper that transports the new material placed in the new material hopper to the rear. a material transfer device, a first scarifier for scraping the road surface, a first scraping device for scraping up the recycled material scraped by the first scarifier, and a first scarifier for scraping up the recycled material scraped up by the first scraping device. A front comprising a recycled material transfer device that transports the recycled material rearward, and a heater that heats the road surface after the recycled material scraped up by the first scarifier is scraped up by the first scraping device. A recycled material hopper for receiving recycled material sent from the recycled material transfer device of the front vehicle is provided at the rear of the section vehicle, a second scarifier for scraping the road surface heated by the heater, and the second scarifier. a second scraping device that scrapes up the recycled material loosened by the scarifier and puts it into the recycled material hopper; and a second scraping device that receives the new material and recycled material sent from the new material transfer device and the recycled material hopper and processes them. A rear car equipped with a mixing device is installed and is configured to heat and scrape the road surface individually in two stages, front and rear, so the road surface can be efficiently heated and aggregate can be crushed with a small amount of power. You can loosen it more deeply without having to worry about it.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of a two-stage road surface regeneration device according to the present invention. A... Front car, B... Rear car, C... Dump truck, 3... New material hopper, 4... New material transfer device, 5, 6... Scarifier, 7... Recycled material transfer device, 8 ... Raking device, 9, 10 ... Heater, 13a, 13b ... Recycled material hopper, 15,
16... scarifier, 17... raking device,
18...Mixing device.

Claims (1)

[Claims] 1. A new material hopper that receives new material supplied from a truck, etc., a new material transfer device that transports the new material placed in the new material hopper to the rear, a first scarifier that scrapes the road surface, and the first scarifier. a first raking device that scrapes up the recycled material scraped up by the first raking device; a recycled material transfer device that transports the recycled material scraped up by the first raking device backward;
The recycled material from the front car is provided at the rear of the front car with a heater for heating the road surface after the recycled material scraped by the first scarifier is scraped up by the first scraping device. A recycled material hopper that receives recycled material sent from the transfer device, and a second scraper that scrapes the road surface heated by the heater.
a scarifier, a second scraping device that scrapes up the recycled material loosened by the second scarifier and puts it into the recycled material hopper, and a new material transfer device and the recycled material sent from the recycled material hopper and the recycled material. A two-stage road surface regeneration device characterized in that a rear vehicle is provided with a mixing device for receiving materials and mixing them.