JPH0535129Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Field of industrial application] This invention is a method of 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 road surface regeneration device equipped with a recycled material dropping mechanism used in the leveling limit construction method.

[Conventional technology]

A conventional road surface regeneration device is configured such that all of the recycled material scraped by the scarifier is fed into a mixing device and mixed together with new material.

[The problem that the idea attempts to solve]

However, the depth of the ruts on the road may vary in the direction of travel, and in such cases, the amount of scraped and recycled material increases or decreases considerably. In the above-mentioned conventional road surface regeneration device, if the amount of recycled material decreases, it can be compensated with new material, but if the amount of recycled material increases, the new material becomes relatively less and the quality deteriorates. . In addition, as the amount of recycled material increases, a mixture of recycled and new materials overflows in front of the leveling equipment, making it easy for the road surface regeneration equipment to slip, making it necessary to stop work and remove the recycled mixture. This not only reduces efficiency but also causes problems such as wasted new material.

The purpose of the present invention is to provide a road surface regeneration device that is equipped with a recycled material dropping mechanism that can be carried out continuously and efficiently without interrupting work, and that does not waste new material. do.

[Means to solve the problem]

In order to achieve the above object, the present invention has a hopper that receives new material supplied from a truck, etc., a scarifier that scrapes the road surface, and a scarifier that scrapes the recycled material that has been scraped by the scarifier onto a traveling vehicle. In addition to receiving the new material sent from the above-mentioned hopper by the transfer device,
A mixing device that receives and mixes the recycled material scraped up by the scraping device, and a screed that spreads the recycled mixture discharged from the mixing device on the road surface in the above order from the front of the vehicle. The road surface regeneration device is arranged toward the rear, and the raking device includes a raking cylinder, an endless chain wound around a sprocket, a flight installed on the chain, and the sprocket. a rotary drive device that rotates and raises the flight along the bottom plate of the raking tube to scrape up the recycled material; A removal port is formed to allow the material to fall downward, and a lid is provided on the removal port to open and close the removal port by being moved by an opening/closing drive device, and a temporary receptacle is provided below the removal port to receive the recycled material falling from the removal port. The structure includes a hopper for use.

[Effect]

The operation of the transfer device sends the new material from the hopper to the mixing device, and the scraping device scrapes up the recycled material loosened by the operation of the scarifier and feeds it into the mixing device, where the new material and recycled material are mixed. A device mixes the mixture, discharges it onto the street, and spreads it out using a leveling device.

In the above case, if the amount of recycled material loosened by the scarifier ear increases, open the lid and put the excess recycled material into the temporary receiving hopper, and check the mixing ratio of new material and recycled material, and the new material and recycled material. Adjust the amount of recycled mixture with wood.

If the depth of the rut increases and the amount of recycled material that can be loosened by the scarifier ear decreases, use the recycled material that was placed in the temporary receiving hopper above.

〔Example〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a road surface regeneration device equipped with a recycled material dropping mechanism according to the present invention will be described in detail below with reference to the drawings.

In FIG. 1, 1 is a running vehicle. The traveling vehicle 1 has a total of four wheels 2 on the front, rear, left, and right sides, and is capable of freely traveling and transporting work, and has a hopper 3 at the front end that receives new material from a dump truck running in front of the traveling vehicle 1. is provided. At the center of the front part of the traveling vehicle 1, a transfer device 4 consisting of a bar feeder is provided for carrying the material in the hopper 3 to the rear. This transfer device 4 is raised from a hopper 3 located at a low position to the rear of the traveling vehicle 1, and its rear end is located above a mixing device 5 consisting of a pugmill mixer.

In addition, rotary scarifiers 6 and 7 are arranged in parallel to each other in the lower part of the traveling vehicle 1, located behind the front wheels 2 and used to loosen the pavement of the road surface. The front rotary carificer 6 is configured to be able to move left and right depending on the road width, and the rear rotary carificer 7 is fixedly provided at that position. These allow the necessary width of the road to be made as wide as possible. These rotary scarifier ears 6, 7 are for scraping the road surface heated by the road heater running in front of the main road surface regeneration device as described above.
7 are set to rotate in opposite directions as shown by arrows. This is to cancel out the reaction forces received when scraping the road surface.

Further, the rotary carificer tires 6 and 7 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 deposited on the traveling vehicle 1. 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 6 and 7 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 carifiers 6 and 7 to scrape up the recycled material scraped by the rotary carifiers 6 and 7 and convey it to the mixing device 5.

As shown in FIGS. 2 to 5, the raking device 8 includes a rotating shaft 1 equipped with sprockets 11 and 12 in a raking cylinder 10 whose upper and lower ends are open.
3 and 14 are pivoted in parallel, and the sprocket 1
Endless chain 1 at 1, 12, 11, 12
At the same time, a large number of flights 16 are installed at predetermined intervals on the two chains 15, 15, and a sprocket 17 provided at the outer end of the upper rotating shaft 13 and a hydraulic motor (rotation drive Apparatus) Consisting of a chain 21 wound around a sprocket 19 of 18, the flight 16 is circulated together with the chain 15 by the drive of the hydraulic motor 18 to scrape up the recycled material along the bottom plate 10a of the scraper tube 10. It is said that

A withdrawal port 10b is formed in the bottom plate 10a of the scraping tube 10, and a lid 22 is provided in the withdrawal port 10b.
is rotatable up and down with its upper edge supported by a pivot 23 on the scraping tube 10, and a piston 25 of a cylinder (opening/closing drive device) 24 is connected to the lid 22. . In this configuration, when the cylinder 24 in the extended state contracts, the lid 22 rotates downward to open the extraction port 10b, and the recycled material is removed from the extraction port 10b of the scraping tube 10.
It is pulled out into a temporary receiving hopper 26 arranged under the holder 0b. The extraction port 10b, the lid 22, the cylinder 24, etc. constitute a recycling material extraction mechanism.

A hydraulic cylinder 28 is installed on the bottom of the mixing device 5.
A gate 29 is provided which can be opened and closed by. This gate 29 opens toward the rear side of the traveling vehicle 1, and by opening this gate 29, the regenerated mixture produced by completing the mixing can be supplied to the road surface. Further, behind this gate 29, a spreading screw 30 is arranged to spread the regenerated mixture laterally, and further behind it is a spreading screw 30.
A screed (leveling device) 31 is arranged to spread and compact the recycled mixture spread by the screed.
As is well known, the screed 31 is supported by a leveling arm (not shown) that is swingably provided with respect to the traveling vehicle 1, so that the thickness of the pavement can be adjusted.

Reference numerals 32 and 33 are speed sensors for the transfer device 4 and the scraping device 8, and 34
is a supply pipe for supplying additives to the mixing device 5;
35 is a reinforcing member installed between both side plates of the scraping tube 10.

Next, the operation of the road surface regeneration device equipped with the recycled material dropping mechanism configured as described above will be explained.

When performing road repair work, a road heater runs in front of this device to heat the road surface. In addition, a compaction roller runs behind this device, compacting the road surface.

While moving forward at a working speed, this device uses rotary scarifiers 6 and 7 to loosen the pavement of the road surface, which has been heated in advance by a road heater. The scraped material is scraped up by a scraping device 8 and thrown into the mixing device 5 as recycled material.

On the other hand, new material is received by a hopper 3 from a dump truck running in front of the main on-road surface regeneration device, transported rearward by a transfer device 4, and fed into a mixing device 5.

The new material and recycled material thus put into the mixing device 5 are mixed for a predetermined time in the mixing device 5 to form a recycled mixture, which is then supplied to the spredding screw 30 by opening the gate 29 by the hydraulic cylinder 28. be done. The regenerated mixture is then spread on the road surface, leveled with a screed 31, and compacted with subsequent compaction rollers. Repair work is carried out continuously using the above steps.

During this work, if an increase in the amount of scraping of recycled material by the scarifiers 6 and 7 is detected by the operator's visual observation or by using a scraping amount measuring device (not shown), the cylinder 24 should be removed. The lid 22 is operated to open the lid 22, and part or all of the recycled material is extracted from the extraction port 10b to the temporary receiving hopper 26. The recycled material temporarily received in the hopper 26 is then reused by replenishing it to the mixing device 5 when the amount of scraping by the scarifiers 6 and 7 decreases.

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

(1) When the lid 22 is pivoted at its upper edge with a pivot 23 as shown in FIG. 4, when the lid 22 is closed, the lid 22
This is convenient because the recycled material is less likely to get caught between the bottom plate 10a and the bottom plate 10a. However, it is also possible to pivot the lower edge and side edges of the lid 22 with a pivot.

(2) Although the lid 22 in the illustrated embodiment is rotatable, it may also be of a sliding type in which the lid is slidable up and down or left and right.

(3) As a loosening amount measuring device, there is a device that calculates the amount of recycled material loosened per unit time from the loosening depth and width of the road surface and the traveling speed of the vehicle 1, but it is also possible to use a device with a different structure. You can also do it. When a loosening amount measuring device is used, opening and closing of the lid 22 is normally automatically controlled.

[Effect of idea]

As explained above, the road surface regeneration device equipped with the recycled material dropping mechanism according to the present invention has a hopper that receives new material supplied from a truck, etc., a scarifier that loosens the road surface, and a scarifier that loosens the road surface using the scarifier. A raking device that rakes up recycled material onto a traveling vehicle, receives new material sent from the hopper by a transfer device, and receives the recycled material raked up by the raking device and mixes them. The road surface regeneration device includes a mixing device and a screed for leveling the regenerated mixture discharged from the mixing device on the road surface, and the screed is disposed in the above order from the front of the vehicle toward the rear. The lifting device includes a raking cylinder, an endless chain wound around a sprocket, a flight installed on the chain, and a regenerating device that rotates the sprocket to raise the flight along the bottom plate of the raking cylinder. The scraping tube is equipped with a rotational drive device for scraping up the material, and the bottom plate of the scraping tube is formed with a extraction port through which the recycled materials scraped up by the flight fall downward, and the extraction port has an opening/closing mechanism. While a lid is provided that is moved by a drive device to open and close the extraction port, a hopper is provided below the extraction port to temporarily receive the recycled material that falls from the extraction port, so that no ruts can occur. If the digging becomes shallow and the amount of recycled material to be loosened increases, remove the excess recycled material into the temporary receiving hopper, and if the digging becomes deep and the amount of scraping decreases, use the temporary receiving hopper. It is possible to repair roads while maintaining good quality by adjusting the mixing ratio of new materials and recycled materials within a predetermined range by adding recycled materials. Additionally, since the reclaimed mixture of new material and recycled material does not overflow in front of the screed, work can be carried out continuously and efficiently without interruption, and there is no wastage of new material. , economical.

[Brief explanation of drawings]

FIG. 1 is a side view of an embodiment of the road surface regeneration device equipped with a recycled material dropping mechanism according to the present invention, FIG. The figure is a cross-sectional view of the (-) part in Figure 2, Figure 4 is a cross-sectional view of the extraction port of the scraping device, and Figure 5 is a cross-sectional view of the extraction port of the scraping device.
The figure is a bottom view of the extraction port portion of the scraping device. DESCRIPTION OF SYMBOLS 1... Traveling vehicle, 3... Hopper, 4... Transfer device, 5... Mixing device, 6, 7... Scarifier, 8... Scraping device, 10... Scraping tube, 10
a...bottom plate, 10b...extraction port, 22...lid,
24...Cylinder, 25...Piston.

Claims (1)

[Scope of utility model registration request] Hopper 3 that receives new material supplied from trucks, etc., and scarifier tires 6 and 7 that scrape the road surface.
, a scraping device 8 that scrapes up the recycled material scraped by the scarifier ears 6 and 7 onto the traveling vehicle 1, and a scraping device 8 that receives the new material sent from the hopper 3 by the transfer device 4, A mixing device 5 that receives the recycled materials scraped up by the raising device 8 and mixes them, and a screed 31 that spreads the recycled mixture discharged from the mixing device 5 on the road surface.
is a road surface regeneration device disposed in the above order from the front to the rear of the traveling vehicle 1, and the scraping device 8 includes a scraping cylinder 10 and sprockets 11, 11, 12, 12. An endless chain 15, 15 wrapped around the chain 15,
15, and a rotary drive device 18 that rotates the sprockets 11, 11, 12, and 12 to raise the flight 16 along the bottom plate 10a of the scraping cylinder 10 to scrape up the recycled material. A bottom plate 10a of the scraping cylinder 10 is provided.
A extraction port 10b is formed in which the recycled material scraped up by the flight 16 falls down, and a lid 22 is provided in the extraction port 10b to open and close the extraction port 10b by being moved by an opening/closing drive device 24. A road surface regeneration device equipped with a recycled material dropping mechanism, characterized in that a temporary receiving hopper 26 is provided below the extraction port 10b to receive the recycled material falling from the extraction port 10b.